Oregon State University

College of Earth, Ocean, and Atmospheric Sciences

Directory of People

Faculty Specialties and/or Research Interests

Andrea Allan photo Andrea Allan

I am an instructor for both the atmospheric sciences and the geography programs. I do not currently accept graduate students. My previous research specialized in large-scale atmospheric circulation and dynamics; present and future climatology; and global and regional climate modeling and statistical analysis.
Jeffrey Barnes photo Jeffrey Barnes

Large-scale atmospheric dynamics and planetary atmospheres, planetary exploration.
Jack Barth photo Jack Barth
Executive Director of the Marine Studies Initiative (MSI) and Professor
Tamara Baumberger photo Tamara Baumberger
Assistant Professor (Senior Research)
Laurence Becker photo Laurence (Larry) Becker
Professor / Director of Environmental Sciences Undergraduate Program

Agricultural and food systems, development, Africa (Mali and Côte d'Ivoire)
Agrarian change and natural resource management
Lorene Yokoyama Becker photo Lorene Yokoyama (Laurie) Becker
Senior Instructor I

Geographic Information Systems and Sustainability
Conservation GIS Decision Support Systems
Kim Bernard photo Kim Bernard
Associate Professor

The primary motivation behind my research is to understand how natural and anthropogenic forces influence plankton community structure and trophic interactions in marine pelagic ecosystems.  My research focus is in the area of polar zooplankton ecology.
Sherman Bloomer photo Sherman Bloomer
Director, Budget & Fiscal Planning

Marine Geology, Geochemistry, Petrology
Rene Boiteau photo Rene Boiteau
Assistant Professor

Environmental organic chemistry Bioinorganic chemistry Mass spectrometry Trace metal cycling
Understanding the sources, transformations, and biological impact of metals and nutrients in the environment is needed to develop accurate climate models, assess the fate and impact of harmful contaminants, and design sustainable practices for food and bio-fuel crop production. In most cases, however, the metabolic pathways, organisms, and genes involved in these global processes are still unknown. The cornerstone of our research is the development of state-of-the-art analytical approaches (especially mass spectrometry) that provide us with new windows into how elemental cycles are structured at the molecular level. Leveraging these and other 'omics' tools, our goal is to develop predictive knowledge of how metals and organic nutrients impact food webs, evolutionary adaptations, and environmental/human health.
Ed Brook photo Ed Brook
Distinguished Professor of Earth, Ocean, and Atmospheric Sciences

Paleoclimatology, geochemistry
Ice core trace gas records, cosmogenic isotopes, extraterrestrial dust
Christo Buizert photo Christo Buizert
Assistant Professor

Paleoclimate, ice cores, abrupt climate change, firn processes
My work aims to reconstruct and understand past climate change and atmospheric composition, using deep ice cores from Greenland and Antarctica. I combine ice core measurements, numerical modeling and fieldwork to achieve these goals. I have an enduring interest in abrupt climate change of the last ice age, the so-called Dansgaard-Oeschger cycle. For each D-O event, Greenland warmed by about 10°C within decades. We discovered that during these events the hemispheres communicate via slow (200 year delayed!) oceanic signals, as well as via fast atmospheric signals. Using climate models I have investigated the role of the Southern Ocean in setting the pace of the  D-O cycle. Ongoing work is to reconstruct the timing, magnitude and spatial pattern of climate change over the Greenland ice sheet using nitrogen isotopes, and to understand how this relates to the rate of ice retreat during the last deglaciation. I have extensively studied the firn layer, which is the 50 to 100 m thick layer of unconsolidated snow on top of ice sheets. I work both on firn densification and on firn air transport. Ice core timescales (or chronologies) are critical for the correct interpretation of ice core records. I continue to work on improving ice core chronologies through firn densification modeling and volcanic matching. I have contributed to ice core time scales of the NEEM, GISP2, WAIS Divide, South Pole and RICE ice cores. Other research projects include radiometric Kr-81 dating of ancient ice in Antarctica, in situ radiocarbon production in ice, and the relationship between temperature and accumulation in Antarctica. In a previous life, I worked on quantum dots and spintronics.
Michael Campana photo Michael Campana

Hydrogeology, hydrophilanthropy, and water resources
Transboundary groundwater resources; integrated and sustainable water resources management; water, sanitation and hygiene (WaSH) in developing regions; regional hydrogeology; science-policy interface; communications
Lorenzo Ciannelli photo Lorenzo Ciannelli

Fisheries oceanography, spatial ecology, fish early life stages, statistical analysis of catch and survey data
My primary research focus is on fisheries oceanography and marine ecology. I study the causes of temporal and spatial variation of marine populations, as well as the management implications of the factors involved. A substantial fraction of my work revolves around early life stages of fish, as in marine organisms, spatial and temporal variability at the population level is closely linked to events that occur during the very first few months or years of life. I have also worked extensively on the ecology of adult stages, predator-prey trophic interactions in marine ecosystems, and on dispersal and distribution patterns of scyphozoa jellyfish. I particularly value merging the ecological and quantitative disciplines to study processes that affect the dynamics of marine populations in space and time. Thus, I work with modelers, statisticians, and fisheries biologists from both academic and management institutions to tackle practical problems that interface between ecology and management. I actively search for new methodologies from other disciplines that could be used to address practical problems in fisheries ecology. For example, many of my research investigations have required the development or application of principles from terrestrial ecology.  
Peter Clark photo Peter Clark
Distinguished Professor of Earth, Ocean, and Atmospheric Sciences

Glaciers and ice sheets, sea level change, paleoclimatology and abrupt climate change
Frederick Colwell photo Frederick (Rick) Colwell

Microbial ecology, subsurface microbiology, geomicrobiology, coupling of microbial rates and processes to physical and chemical parameters in the environment, sensing and monitoring of microbes, methods for sampling the earth’s subsurface for microorganisms, bioremediation.
Flaxen Conway photo Flaxen Conway
MRM Director; Professor

Flaxen Conway conducts research, education and engagement about how changes in natural resource policy and management effect industries, workforces, agencies, communities, groups and families that directly depend on them. She specializes in helping individuals and groups adapt to change through cooperative learning, accessing resources, building coalitions and planning strategies that meet the needs of all interests. Projects/Specialties:
  • Communities coping with change and transition
  • Personal and group leadership education
  • Cooperative learning and research
  • Community economic development
  • Human dimensions of marine renewable energy, marine EBM, and spatial planning
Louise Copeman photo Louise Copeman
Associate Professor (Senior Research)

I study the mechanisms and consequences of environmental variation on energy uptake and compartmentalization in cold-water marine organisms. I am particularly interested in the effects of temperature, oxygen, oil contamination and pH on energy allocation, growth and development in early life stages of crabs and fish.  Further, I explore how these physical factors interact with climate-induced changes in food quality (total lipids and fatty acids) to influence animal survival.  I aim to provide environmentally-dependent physiological rates (i.e. growth rates, mortality rates, and tissue-specific lipid storage rates) that can be parameterized and modelled to make predictions about population persistence, biogeography and health of marine species.    
Patrick Corcoran photo Patrick Corcoran
Associate Professor, Extension
Robert Cowen photo Robert Cowen
Director, Hatfield Marine Science Center
Jessica Creveling photo Jessica (JC) Creveling
Assistant Professor

My research examines sea-level change throughout Earth's ice ages, and attendant paleoceanographic, paleoclimatological, and paleoecological shifts. Current work from my research group integrates field observation of the sedimentary record with global geophysical numerical models to refine estimates of past sea level heights for both warmer and colder intervals in Earth's history. Because insights from the stratigraphic record of Quaternary glacial cycles inform how we interpret the much older stratigraphic record (and vice-versa), my group pursues research questions at both ends of the geological timescale in tandem. For instance, inferences of peak global mean sea level during late Pleistocene interglacials/interstadials (e.g., MIS 6, 5, and 3) reveal the stability of polar ice sheets to changing climate regimes. Examination of exceptional glacial episodes – such at the Neoproterozoic Snowball Earth events – reveal pronounced spatial discontinuity and temporal diachroneity for stratal surfaces and sequence stratigraphic packages that arise from 'glacioeustatic' sea-level change. Regardless, all our research efforts into past sea level aim to contextualize contemporaneous (and connected) physical, chemical, and ecological changes in Earth's oceans through time.
Byron Crump photo Byron Crump

Aquatic microbial ecology in marine, estuarine and freshwater ecosystems.  Bacterial and Archaeal biogeography.  Organic matter and nutrient cycling.  Microbial food web structure.  Composition and development of microbial communities.  Influence of hydrodynamics and particle cycling on microbial activity.  
Lynette de Silva photo Lynette de Silva
Water Conflict Mgt. Director; Senior Instructor I
Shanaka de Silva photo Shanaka (Shan) de Silva

Volcanology, Igneous Petrology, Aeolian sedimentology/geomorphology, Terrestrial Planetary Surface Processes
I am a field-based volcanologist with active interests in aeolian geomorphology and planetary analogs. The questions I address start in the field – there are so many interesting things we can see on the Earth…many of which we simply don't understand. Field observations are the starting point of my inquiry and these have led to some core themes in our research efforts: magmatism and volcanism in volcanic arcs, physical volcanology and petrology of explosive volcanic eruptions, effusion of crystal–rich lava, caldera (super)volcanism and the volcano-plutonic connection. To investigate these phenomena I use the volcanologists toolbox (Petrology, Geochemistry, Physical Volcanology, Geochronology, Remotely Sensed data, Geophysics) at all different scales. I am not an “expert” in any particular analytical technique, but I look for different tools and creative solutions for the problems of interest most often in collaboration with those who are experts. I like to think of this as "Volcano Forensics" - a CSI approach to volcanology. Our research projects have taken us to Chile, Peru, Argentina, Bolivia, Italy, Indonesia, China, and Japan. Read about our work at Lake Toba, a large caldera in Sumatra. As a volcanologist, why am I interested in aeolian geomorphology? While studying volcanic features in the high Andes, we couldn't ignore the fact that wind was producing an other-world landscape that was a valuable analog for the surface of Mars. Starting with yardangs, we have begun to address how the wind erodes and modifies high desert volcanic landscapes. Our latest work is trying to understand how gravel dominated bedforms form and rates of aeolian erosion of ignimbrite. The broader impacts of our work relate to volcanic hazards, planetary surface processes, volcanism and climate, and Earth Science Education and Outreach (Visit our VolcanoWorld website). I am also committed to undergraduate research and Increasing Diversity in Earth Sciences.
Simon de Szoeke photo Simon de Szoeke
Associate Professor

Atmosphere-ocean interaction, Stratiform clouds, Tropical meteorology
I am interested in atmosphere-ocean interaction, and its influence on the climate. Much of my research focuses on the tropics. They receive the most sunlight, resulting in warm sea surface temperature, and strong fluxes of heat from the ocean to the atmosphere. Most of the heat transferred to the atmosphere is in the form of evaporation. Water vapor condenses in rain clouds and the heat of condensation drives the large-scale circulation of the atmosphere. Wind from the atmosphere blows across the ocean surface and drives ocean currents. Clouds themselves are an important player in atmosphere-ocean interaction, because they shade the ocean surface from the sun, keeping it cooler. I model or observe important and interesting regional processes, like strong ocean upwelling and stratiform clouds in the eastern tropical Pacific Ocean, and intraseasonal variability, organized deep convection, and its air-sea interaction in the central tropical Indian Ocean. I measure heat and momentum fluxes from ships by measuring radiation and turbulent temperature, humidity, and velocity fluctuations. I use data gained from observations and regional models to understand air-sea interaction and clouds, and to understand how well climate models simulate these processes.
Edward Dever photo Edward Dever

My research interests include cross-shelf exchange processes, the analysis and prediction of Lagrangian transport, and air-sea interaction. My research methods have included analysis of physical oceanographic and meteorological data (primarily moored time series and surface drifters) and the application of analytical models.
John Dilles photo John Dilles

Geology and geochemistry of mineral deposits, field geology
Economic geology (origin of metallic mineral deposits, especially porphyry copper and related deposits of western North America and South America), structural geology, igneous petrology, stable isotopes, isotopic ages
Theodore Durland photo Theodore (Ted) Durland
Assistant Professor (Senior Research)

I am interested in all aspects of Geophysical Fluid Dynamics. My most recent work has involved the dynamics of oceanic equatorial waves: their generation, decay and interactions with strong equatorial currents. I am also interested in the interactions of coastal Kelvin waves with narrow straits, including the scattering of baroclinic modes by sills within the straits.
Gary Egbert photo Gary Egbert

Geophysics, physical oceanography
Electromagnetic geophysics, ocean tides, numerical modeling, statistical methods, geophysical inversion and data assimilation
Jennifer Fehrenbacher photo Jennifer Fehrenbacher
Assistant Professor

Tracer oceanography
My research involves components of trace element and stable isotope geochemistry, biomineralization, and marine biology. I develop and use proxies, primarily trace elements in marine calcifiers, for reconstructing ocean circulation, temperature, and chemistry in the past. A few of the primary research questions I seek to answer: How do marine calcifiers make their shells? How do they exert control over trace element/Ca ratios and modify the trace element/Ca ratios so greatly from seawater. For example, understanding how foraminifera calcify and control their geochemistry has broad implications for the use of trace element/calcium ratios as paleo-proxies. Decades of research and empirically derived relationships show that many foraminiferal based paleo-proxies are fundamentally sound (the proxies work, we just don't know exactly why and/or how). I seek to find answers to these questions to improve paleo-proxies through culturing live specimens and applying laboratory based developments to specimens from fossil record.
Melanie Fewings photo Melanie Fewings
Associate Professor

Observational coastal physical oceanography and meteorology
Jonathan Fram photo Jonathan Fram
Assistant Professor (Senior Research), OOI Endurance Array Project Manager
Chris Goldfinger photo Chris Goldfinger

Marine Geology and Geophysics, Paleoseismology
Subduction earthquakes; Paleoseismology. Mechanics of oblique subduction, Structural Geology, Accretion and erosion of active margins; Seafloor imaging, mapping, and visualization techniques; Seafloor drilling technology.
Miguel Goni photo Miguel Goni

Google Scholar: https://scholar.google.com/citations?hl=en&user=YurEjvYAAAAJ&view_op=list_works  
My overall scientific interest is to better understand the cycling of natural organic matter in the earth's surface, mainly in aquatic environments such as oceans, estuaries, rivers, groundwater, and lakes. A key objective of my research is to elucidate the role that organic matter plays on the global biogeochemical cycles of major elements (e.g., carbon, oxygen, nitrogen). Specific areas of my on-going research include:
  1. Understanding the processes controlling organic matter cycling in river-dominated ocean margins, including deltas and estuaries.
  2. Investigating the factors that control the generation and export of organic matter from the surface ocean and its transport, cycling and preservation in marine sediments.
  3. Reconstructing the sources and compositions of organic matter in sediments over glacial - interglacial scales.
  4. Assessing the role of natural organic matter on the behavior of particle reactive contaminants in coastal environments.
  5. Developing and applying novel analytical techniques including organic biomarkers and stable isotopes for the study of organic matter in the ocean.
Hannah Gosnell photo Hannah Gosnell

Human dimensions of global environmental change, rural geography, agricultural landscapes, ranching, U.S. West
Drivers and consequences of rural land use change; water resource policy, management and law; climate change adaptation; environmental governance; social-ecological resiliency; adaptive management; payment for ecosystem services; sustainability transitions; transformational adaptation
David Graham photo David Graham

Helium isotope and rare gas geochemistry; isotope and trace element chemistry of volcanic rocks from mid-ocean ridges, islands, and continental rifts, with applications to the dynamics of the Earth's upper mantle; the role of volatiles in petrogenesis.
Roy Haggerty photo Roy Haggerty
Dean of the College of Science and Professor
Burke Hales photo Burke Hales

Biogeochemical Oceanography
Ocean-Margin Carbon Cycling: Study of the processes impacting the state of aqueous carbonate chemistry in estuarine and coastal waters, and effects on ocean acidification and hypoxia. Coastal Oceanography: Analysis and synthesis of the physics, biology, and chemistry of the coastal ocean, using observations collected with high-speed sampling and analysis systems. Mesoscale Surface Ocean Processes:  Study of the physics, biology, and chemistry of the surface ocean, using observations collected with high-speed sampling and analysis systems. Analytical Environmental Chemistry:  Development of sensors and systems for high-speed and robust measurement of ocean chemistry. Benthic Biogeochemistry:  In situ field measurements of sediment pore water chemistry and numerical models of transport and chemical kinetics in sediments. 
Brian Haley photo Brian Haley
Associate Professor (Senior Research)

For more information on the Keck Collaboratory for Plasma Spectrometry at Oregon State University, please click on the "website" link above. Go Beavers!
Merrick Haller photo Merrick Haller

Nearshore remote sensing; surface wave transformation; rip currents; sediment transport.
Robert Harris photo Robert Harris

I am interested in using thermal processes to understand the Earth. All geologic processes involve the transfer of energy. Heat (energy) and temperature are fundamental to many earth processes, and quantifying the flow of energy and thermal budgets leads to an appreciation and understanding of Earth dynamics. These interests have led me along three paths.
  1. Marine Heat and Fluid Flow. See page on U.S. marine heat flow capability. I am trying to understand the curious observation that while midplate hotspot swells exhibit characteristics suggesting a thermal origin including, broad anomalous topography, underplated magmatic material, and young volcanism, at some hotspots, notably Hawaii, excess heat flow has not been observed. At the Hawaiian midplate swell heat flow values across the swell are resolvably lower than values off swell. We hypothesize that fluid flow within the archipelagic apron and upper oceanic crust might be responsible for the lower than expected heat flow values. I am currently seeking to understand the role of seamounts in channeling flow and advecting heat [Hutnak et al., 2008; Harris and McNutt, 2007; Harris and Chapman, 2004; Harris et al., 2004; Fisher et al., 2003]. See also The future of marine heat flow: defining scientific goals and experimental needs for the 21st century, Workshop Report, Fort Douglas, Salt Lake City, Sept. 6-7, 2007.
  2. Climate change inferred from borehole temperature-depth profiles. Changes in temperature at the surface propagate slowly downward into the Earth, perturbing the background temperature field. Due to the low thermal diffusivity of rock, temperature perturbations in the uppermost 300 m of the Earth record surface temperature conditions over the last 500 yrs. These subsurface temperature perturbations therefore can be used to reconstruct past ground surface temperature changes not only for this century, but also for the time immediately preceding installation of meteorologic stations, a period of time that is critical to climate change studies. Analyses of borehole temperature logs therefore both complement and extend the meteorological archive of climate data and can usefully be combined with proxy data [Harris and Chapman, 2005].
  3. Temperature and rheology. The thermal state of the lithosphere plays a large role in influencing geodynamics. Boreholes being drilled for strain meter emplacement as part of the NSF funded EarthScope Initiative provide excellent opportunities for new continental heat flow measurements. These measurements, combined with modern geodetic measurements, promise to improve our understanding of continental deformation [Harris et al., 2004; see also Thermal Processes in the Context of EarthScope Workshop Report].
Michael Harte photo Michael Harte

Marine Geography
My academic research address fisheries policy and the wider subject of the sustainable management of marine resources. I have specific interdisciplinary research interests in: Rights-based fishery management systems; cost recovery and resource royalty systems; capacity building for sustainable management of the environment; co-management of coastal marine resources; and spatial decision support systems to assist environmental decision-making. 
Joseph Haxel photo Joseph Haxel
Assistant Professor (Senior Research)
Julia Jones photo Julia Jones

Spatio-temporal statistics, forest hydrology, landscape ecology, surface processes, biogeography
Land use, climate change and disturbance effects on hydrology, geomorphology, water quality
Lauren Juranek photo Lauren (Laurie) Juranek
Associate Professor

Dissolved gases, isotope biogeochemistry, marine biological pump, and marine carbon cycle
Maria Kavanaugh photo Maria Kavanaugh
Assistant Professor

Seascape ecology, remote sensing, global change    
Randy Keller photo Randy Keller

Marine Geology, Igneous Geochemistry
Chemical geodynamics of mantle plumes and subduction zones; Hotspot - spreading ridge interaction; Volcanology of seamounts; Origin of diamonds
Robert Kennedy photo Robert Kennedy
Associate Professor

Geospatial analysis, remote sensing, modeling, landscape ecology, disturbance dynamics, computational methods.
Humans depend on landscapes to provide sustainable services, yet most landscapes are under increasing stress as they respond to both natural and anthropogenic processes of change.  Using satellite-based remote sensing as my primary tool, my goal is to develop new conceptual and analytical approaches to directly observe landscape change processes and relate those changes to driving forces. 
Adam Kent photo Adam Kent
Professor and Associate Dean for Research and Faculty Advancement

High temperature geochemistry, Igneous petrology, In-situ elemental and isotopic analysis
Behavior and evolution of magmatic and volcanic systems. Studies of silicate melt inclusions. Development and application of in-situ trace element and isotopic measurement techniques in the Earth Sciences.
Eric Kirby photo Eric Kirby
R.S. Yeats Professor of Earthquake Geology and Active Tectonics and Associate Dean for Academic Programs

I am interested in tectonic evolution of orogenic systems, with a particular emphasis on the interplay between climate, erosion and tectonics.  My current research projects focus on 1) fault system evolution over millennial timescales; 2) fluvial adjustment to spatial and temporal variations in rock uplift; 3) the evolution of topography in forearcs of convergent margins; 4) the coupling between mantle flow and surface deformation; 5) growth and evolution of the Tibetan Plateau; and 8) the influence of climate on landscape evolution.
Anthony Koppers photo Anthony Koppers
Professor and Associate Dean for Research Operations
P. Michael Kosro photo P. Michael Kosro

Coastal oceanography; shelf/deep-sea exchange processes; eastern boundary currents; California and Peru/Chile Undercurrent; remote sensing; ocean acoustics; ocean circulation.
Stephen Lancaster photo Stephen Lancaster
Associate Professor

Fluvial geomorphology, hydrology
Debris flows, sediment budgets, river migration, landscape evolution, surface-groundwater interactions, forest-geomorphic-hydrologic interactions.
Jim Lerczak photo Jim Lerczak

Coastal physical oceanography including the study of internal tides, high-frequency internal waves, and circulation in the vicinity of fronts; estuarine oceanography including the dynamics that drive the three-dimensional circulation, the mechanisms that transport and disperse materials within estuaries, and the time response of estuaries to changes in forcing; physical/biological interactions which influence larval dispersal.
Ricardo Letelier photo Ricardo Letelier

Scales of response of marine pelagic microorganisms, populations, and communities to environmental perturbations; the role of these responses on biogeochemical cycles, primary productivity, nitrogen fixation, photosynthesis, chlorophyll passive (solar-induced) fluorescence; and the physical and chemical factors controlling these processes.
Mitchell Lyle photo Mitchell Lyle
Professor (Senior Research)

Reconstructing Cenozoic-Holocene Earth Systems from sediment composition and deposition patterns
Roberta Marinelli photo Roberta Marinelli
Dean and Professor

The ecology and biogeochemistry of the seafloor
The interactions between organisms on the seafloor – clams, marine worms, and other fascinating creatures – and the chemical properties of their habitat
Ricardo Matano photo Ricardo Matano

Large-scale ocean circulation; the dynamics of western boundary currents; ocean modeling; geophysical fluid dynamics; the circulation in the Southern Ocean.
Haruyoshi Matsumoto photo Haruyoshi Matsumoto
Associate Professor (Senior Research)
Jennifer McKay photo Jennifer McKay
Assistant Professor (Senior Research)

Stable isotope biogeochemistry Marine and sedimentary geochemistry Paleoceanography  
I am a marine/sedimentary geochemist and paleoceanographer with research interests that revolve around the use of stable isotopes and trace metals to understand the marine environment (e.g., oxygenation, productivity, carbon transport and burial) throughout geological time.  In addition, I am also the manager of the CEOAS Stable Isotope Lab, which is a facility that runs samples for researchers from around the world.  Do not hesitate to contact me if you have any questions about the lab and the types of analyses we make. OSU/CEOAS Stable Isotope Lab
Andrew Meigs photo Andrew Meigs

Active tectonics, tectonic geomorphology, structural geology
Crustal deformation and feedbacks between exhumation and patterns of deformation in convergent orogens, fold-and-thrust belt structural analysis, tectonics and topography.
Randall Milstein photo Randall Milstein
Instructor and Astronomer-in-Residence for the Oregon NASA Space Grant Consortium
Alan Mix photo Alan Mix
Distinguished Professor of Earth, Ocean, and Atmospheric Sciences
Philip Mote photo Philip Mote
Professor, Vice Provost and Dean of the Graduate School
James Moum photo James Moum

Turbulence dynamics; small-scale ocean physics; nonlinear interanl waves; upper-ocean dynamics; equatorial oceanography; instrumentation; abyssal mixing; boundary mixing; coastal mixing.
John Nabelek photo John Nabelek

Applied and theoretical seismology, faulting processes of large earthquakes; tectonics of mid-ocean ridges, island arcs, and regions of continental extension.
Jonathan Nash photo Jonathan Nash

Ocean Mixing - Exploring the physics of turbulence and mixing is key to our understanding of ocean dynamics. Innovative instrumentation, detailed analysis, and simple dynamical models enable us to:
  • understand the generation and evolution of turbulence
  • quantify irreversible fluxes of heat, salt, biology, chemicals and momentum
  • identify the processes (the pathways to turbulence) which produce these fluxes
  • determine the effects of turbulence on larger-scale flows.
Anne Nolin photo Anne Nolin
Professor (Senior Research)

Mountain hydroclimatology, snow and ice in the climate system, remote sensing
Snow processes in mountain environments, hydroclimatology, cryosphere-climate interactions, remote sensing of snow and ice, surface energy balance modeling, radiative transfer modeling, digital image processing
David Noone photo David Noone

Atmospheric and climate research, large-scale dynamics of the atmosphere, water and carbon cycle, isotope geophysics.
Larry O'Neill photo Larry O'Neill
Assistant Professor

Air-sea interactions, satellite meteorology and oceanography, atmospheric boundary layer and ocean mixed layer dynamics.
Tuba Ozkan-Haller photo Tuba Ozkan-Haller
Professor, Associate Vice President for Research Administration & Development

Near-shore circulation modeling; data assimilation in the near-shore region, time-series analysis techniques, water-wave propagation, sediment suspension and transport, evolution of the near-shore morphology.
Erin Pettit photo Erin Pettit
Associate Professor

Glacier and ice sheet dynamics including ice-shelf stability; ice/ocean interactions; ice rheology and deformation; ice-core climate history; water percolation in firn; fracture and deformation of cold ice; englacial and subglacial water movement; connections between Earth-ice processes and planetary ice; and applied geophysical methods in ice (seismics, acoustics, borehole logging, radar, etc). Using field-research experiences as a mechanism to build confidence in and inspire underprivileged young women to explore science as a career; teaching climate science in the field.  

Clare Reimers photo Clare Reimers

Benthic biogeochemistry; chemical sensor development; in-situ measurements of redox conditions in natural waters and sediments; carbonate chemistry.
Peter Ruggiero photo Peter Ruggiero
Professor and Interim Director of OCCRI

Coastal Geomorphology, Coastal Hazards, Nearshore Processes
  1. Coastal Geomorphology: nearshore morphodynamics, modeling coastal evolution, large-scale coastal behavior;
  2. Coastal Hazards: impact of climate change and variability on coastal change and flood hazards, modeling the coupled human natural system (http://envision.bioe.orst.edu/StudyAreas/Tillamook/);
  3. Nearshore Processes: swash processes, dynamics of high-energy dissipative beaches, nearshore morphodynamics
David Rupp photo David Rupp
Assistant Professor (Senior Research)

Climate variability, anthropogenic influences on climate and hydrology, streamflow processes
Mary Santelmann photo Mary Santelmann
Professor; Director, Water Resources Graduate Program

Wetlands ecology, biogeography
  1. Ecosystem response to human land use and management practices; use of alternative future scenarios combined with diverse evaluative approaches
  2. Environmental and anthropogenic influences on species composition and species richness in agricultural, urban and wetland ecosystems, including effects of landscape composition and pattern on native biodiversity
  3. Ecology and biogeochemistry of wetlands and riparian systems
Andreas Schmittner photo Andreas Schmittner

Climate Modeling
Climate Change, Ocean Biogeochemical Cycles, Interactions in the Climate System, Paleoclimate, Ocean Circulation
Kipp Shearman photo Kipp Shearman
Associate Professor

My research interest is the study of physical processes in coastal ocean. Big, small, long, short, high-frequency, low-frequency, stratified, unstratified, rotating, nonrotating, forced, unforced, surface, bottom, middle – I don’t care. If it’s physics and coastal, I’m interested. I am most interested in understanding the dynamics of the evolving structure of the density field over the shelf. How it is affected by external forcing and how it in turn affects the circulation within the coastal ocean. My approach is observational, using innovative sampling techniques – such as Autonomous Underwater Vehicles (AUVs) – coupled with modeling and analysis, to explain fundamental physical processes. In addition, I think that this kind of research needs to be approached with an interdisciplinary perspective, extending the understanding of physical processes to their impacts on biological, chemical and environmental processes.
Karen Shell photo Karen Shell
Associate Professor

Climate dynamics; general circulation of the atmosphere; interactions between radiative transfer and the dynamics of the atmosphere and ocean; climate modeling
Alyssa Shiel photo Alyssa Shiel
Assistant Professor

Heavy stable isotope geochemistry; geochemical tracer development; transport, transformations and environmental fate of metals/metalloids
My research interests lie in natural biogeochemical cycling of metals and assessing the importance of anthropogenic activities as metal sources. Metal emissions to the environment from anthropogenic sources may be much larger than those from natural sources. These anthropogenic inputs disturb the natural biogeochemical cycling of many elements. My research aims to characterize the isotopic variation among metal sources and to quantify the extent to which reactions (physical, chemical and biological) cause isotopic fractionation of heavy stable isotopes, with the goal of developing these isotope systems as tools for source and process identification. Ultimately, my research seeks to aid environmental monitoring and remediation efforts and improve our understanding of natural and disturbing biogeochemical cycles.
Eric Skyllingstad photo Eric Skyllingstad

Upper ocean turbulence; mesoscale coastal internal waves; ocean-atmosphere coupling.
William Smyth photo William Smyth

Turbulence in geophysical flows, thermohaline processes, nonlinear waves.
Yvette Spitz photo Yvette Spitz

Investigation of the main pathways in marine ecosystems; development of coupled physical-biological models.
Joseph Stoner photo Joseph Stoner

Sediments magnetism including paleomagnetism, environmental magnetism, geomagnetism, sedimentology, stratigraphy, paleoclimatology.
Frank Tepley photo Frank Tepley
Professor, Geology Program Director

Igneous petrology, Isotope geochemistry, Electron probe microscopy
Electron Microprobe Laboratory
  1. Use of compositional variations and in situ Sr-isotopes in plagioclase feldspars in arc rocks to trace the effects of magma mixing and crustal contamination.
  2. Use of textural and geochemical information of plagioclase megacrysts and phenocrysts (and contained melt inclusions) in plagioclase ultraphyric basalts (PUB) and other plagioclase-bearing lavas to study and constrain processes that modify primary mantle-generation basalt compositions during crustal melt transport and residence in mid ocean ridges (MOR)
  3. Use of major- and trace-element diffusional profiles in mineral phases to determine the time scales of magma mixing processes occurring in sub-volcanic reservoirs.
  4. Use of U-series disequilibria (U, Th, Pa, Ra) in whole rocks and minerals to decipher the sources of slab-derived components in arc magmas, and the time scales and character of melting processes within the mantle wedge beneath ocean islands and continental arcs.
Andrew Thurber photo Andrew Thurber
Assistant Professor

Microbe-metazoan Interactions. Deep-Sea and Polar Ecology.  Food Web Dynamics. Deep-sea reducing habitats.  Annelid ecology.
I am interested in how cross-domain interactions impact ecosystem function in marine communities. Through using a variety of isotopic and molecular analyses I identify and quantify trophic linkages between metazoans and bacteria and archaea in soft sediment systems and how this impacts community structure and function.  
Jenna Tilt photo Jenna Tilt
Assistant Professor (Senior Research), Instructor

Land use planning (regional and rural) and analysis, urban ecology, social science.
Regional and rural land use planning and land use change; green infrastructure and low-impact development practices, risk perception, land use planning, and natural hazards management; urban ecology; water resource, and natural resource decision making; social science research methods; geospatial intelligence
Marta Torres photo Marta Torres

Cold seepage at convergent and transform margins; gas hydrate dynamics; geochemical tracers for fluid flow, transport mechanisms and fluid provenance; analytical geochemistry of sediments and pore fluids; role of microbial communities in early diagenetic processes.
Anne Trehu photo Anne Trehu

Application of geophysical data to geodynamic processes along plate boundaries; gas hydrate distribution and dynamics; seismic data acquisition and processing; ocean bottom seismometers.
Nick Tufillaro photo Nick Tufillaro
Associate Professor (Senior Research)

Skills in CEOAS Core Competencies Ocean and fresh water remote sensing             Radiative transfer, atmospheric correction, and product algorithms             Sediment and phytoplankton identification and tracking             Uncertainty (Bayesian) analysis of ocean color products and instruments Dynamical analysis of physical and biogeochemical ocean processes             Lagrangian Coherent Structures Design of optic and electronic instrumentation for environmental monitoring             Multislit Optical Spectrometer (MOS) demonstrator for NASA GEO-CAPE             Fiber-optic Distributed Temperature Sensor (DTS) for stream monitoring Programming             Scientific: C, Python, MATLAB             Data Systems: XML, MySQL, HTML, CSS, JavaScript, UNIX/LINUX
Jamon Van Den Hoek photo Jamon Van Den Hoek
Assistant Professor

I am guest editor for a special issue in Remote Sensing on "Remote Sensing of Geopolitics". Please message me if interested in submitting any work. 

My research uses global satellite imagery and geospatial data to learn about short- and long-term effects of climate change, land use, and violent conflict on people and landscapes. I teach remote sensing, GIS, and geospatial ethics courses, and lead the Conflict Ecology lab that focuses on how power and vulnerability are expressed both on the land and in our data.  See more:
Maureen Walczak photo Maureen (Mo) Walczak
Assistant Professor (Senior Research)

Application of foraminiferal stable isotopes (18O, 13C), trace element/Ca ratios (Mg/Ca, Mn/Ca, Sr/Ca) and radiogenic isotopes (14C, 10Be, 210Pb, 137Cs, 7Be, 234Th) in marine sediments for palaeoenvironmental reconstructions and sediment depositional histories Geochemical (XRF, Nd, Sr, Pb isotopes) and paleomagnetic (u-channel cryogenic magnetometer, point-source magnetic susceptibility) studies of marine sediments Physical properties studies of sediments (grain-size, Geotek MST, X-radiography, CT scan) Investigating deglacial changes in meltwater input, stratification, and biogeochemical cycling in high-latitude environments.  
George Waldbusser photo George Waldbusser
Associate Professor

Impact Story Profile Benthic Ecology & Sediment Biogeochemistry: The role of organisms in modifying physical and biogeochemical processes in sediments, Species interactions in sediments, Coastal and estuarine acidification effects on bivalves, The importance of benthic habitats in biogeochemical cycling, Structure and function of sedimentary habitats, Tidal flat ecology. Nortwest Matters Podcast on Ocean Acidification "Just Pearly" by Kathryn Boyd-Batstone Webinar on Larval Bivalve Responses to Acidification Straub Mid-Valley Environmental Lecture
Kuuipo Walsh photo Kuuipo Walsh
GIScience Program Director / Instructor
Justin Wettstein photo Justin Wettstein
Associate Professor

Large-scale / long-term climate and atmospheric dynamics Climate variability and change Climate impacts and responses in natural and human-managed systems
Climate science; atmospheric general circulation; coupled atmosphere-ocean-ice processes; modern, future, and paleoclimate dynamics; polar climatology; statistical methods; climate and nature; climate and society; interactions across time and space scales; kinetic, thermodynamic, and integrated perspectives on climate variability and change processes
Rob Wheatcroft photo Rob Wheatcroft
Rohm Professor of Oceanographic Education and Program Head for Ocean Science and OEAS

Program Head for the undergraduate Earth Sciences: Ocean Science degree. Students interested in this option should contact me or one of the CEOAS undergraduate advisors.
Angelicque White photo Angelicque (Angel) White
Associate Professor

Phytoplankton physiology, nitrogen fixation, phosphorus cycling, elemental stoichiometry, hyperspectral absorbance, attenuation and fluorescence, harmful algal blooms, numerical approaches to modeling phytoplankton‐mediated processes and utilization of remote sensing tools to explore habitat variability
Greg Wilson photo Greg Wilson
Assistant Professor

My research involves the physics of the nearshore coastal ocean including waves, currents, and sediment transport. I'm interested in using new observational and modeling tools to understand and make predictions of these processes --- often using a probabilistic approach owing to the dynamic/complex nature of the problem. Examples: - measuring statistics of fluid-sediment interaction at the seabed, using new instrumentation (e.g. acoustics) - instrumenting beaches to measure shoaling and breaking waves, and their interaction with seabed roughness - using beach cameras (Argus) with model-data assimilation to improve forecasts of nearshore currents (e.g. rip currents) I've also been involved in applying the same techniques in similar environments such as rivers and inlets. NOTE: Interested in joining my research group as a grad student, or gaining undergraduate research experience?  I'd love to hear from you!  Please contact me (wilsongr@coas.oregonstate.edu) with a brief description of your background and interests.
Aaron Wolf photo Aaron Wolf

Water Resources Policy and Conflict Resolution, Middle East Geopolitics
Transboundary Water Conflicts and Conflict Resolution, Water Basin Technical and Policy Analysis, Environmental Policy Analysis, Shared Waters Conflict Prevention, Management, and Transformation, Water Resources and Environmental Institutional Development and Policy Analysis
David Wrathall photo David Wrathall
Assistant Professor

Research and Teaching Interests: Risk and resilience studies; climate change adaptation; human migration; and political ecology.  Affiliations Lead Author, Intergovernmental Panel on Climate Change, Sixth Assessment, Working Group II, Chapter 8: Poverty, Livelihoods and Sustainable Development. Fellow,Hugo Observatory on Environment, Migration and Politics at Université de Liège. Steering Committee Member, Population-Environment Research Network (PERN) hosted by CEISIN (the Center for International Earth Science Information Network) at Columbia University's  Earth Institute.
Kaplan Yalcin photo Kaplan Yalcin
Senior Instructor II and Assistant Dean of Instructional Programs

Distance and online education, undergraduate research, paleoclimatology
High-resolution ice core records of recent climate variability and environmental change; paleovolcanic records from ice cores; aerosol and snow chemistry at high elevation mountain sites; records of explosive volcanism from ice cores
Bo Zhao photo Bo Zhao
Assistant Professor

Web GIS, Cartography and Geoviusalization, Humanistic GIS
  • The social implications of mapping, geovisualization and/or other forms of geospatial technologies.
  • The study of different spoofing phenomena in geography towards a post-truth reflection on the value of geospatial technologies.
  • The geovisualization and geo-narrative of the coupled human and natural system (e.g., climate change, water use, coastal hazards, etc.).