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Associate Professor
Department of Geology
Portland State University
17 Cramer Hall
1721 SW Broadway
Portland, OR 97201
Email, Phone, etc.

Visiting Scholars:


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Nathaniel Bergman, Harold Schnitzer Visiting Scholar, University of Haifa, Israel, Misfit streams following the catastrophic Missoula Floods, Washington, USA


Students: I am almost always looking for enthusiastic students broadly interested in Earth Surface Processes. A strong quantitative background is preferred. Please see the research and publications pages for a sample of past and current projects, and I am always excited to discuss new ideas. PSU graduate students are supported by competitively awarded teaching and research assistantships.


Adriana Olvera (M.S.), Effects of river capture events on deep-seated landslide locations and timing, northern Oregon Coast Range, USA


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Obinna Ozioko (Ph.D.), Controls on deep-seated landslide timing and locations in the Puget Sound region, Washington, USA


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Lizzet Reyes (M.S.), Terrestrial carbon budget for mass wasting processes associated with the 1980 Mt. St. Helens eruption, Washington, USA


Anna Tsitsivas (M.S.), Characterizing landslides with respect to White Bluffs Bladderpod habitat at Hanford Reach National Monument, Washington, USA


Cody Wilbur (M.S.), Bedload transport and downstream impacts of post-fire landslide debris, Oregon Cascades, USA


Alumni:

Abbie Underwood (M.S., 2022), Most recent rupture on the Boulder Creek fault triggered significant landsliding in the Nooksack watershed, Whatcom County, Washington

Morena Hammer (M.S., 2022), Post-fire erosional and hydrological processes promoting debris flow initiation in a Douglas fir and western hemlock forest in the Riverside burn area, Oregon

Anna Tsitsivas (B.S. Geology Thesis, 2021), Slow-moving landslide hydrology from precipitation, remotely-sensed soil moisture, and in-situ pore pressure

Tiffany Justice (M.S., 2021), Evaluation of Manual and Semi-Automated Deep-Seated Landslide Inventory Processes: Willapa Hills, Washington

Kara Kingen (M.S., 2021), Climatic Controls on the Kinematics of the Hooskanaden Landslide, Curry County, Oregon

Bryce Vascik (M.S., 2020), Amount and Depositional Fate of Carbon Mobilized by Landsliding in SE Alaska

David de Guzman (B.S. Geology Thesis, 2019), Effects of coarse wood in debris flows on mobility and mechanics with discrete element modeling

Christian Sifford (B.S. research assistant, 2019), Geospatial analysis of debris flow runout in southeast Alaska

Cora Siebert (B.S. Honors Thesis, 2019), Using Discrete Element Modeling to Analyze the Role of Coarse Woody Debris in Debris Flow Runout

Rebecca Garriss (M.S., 2019), Modeling surface roughness as an indicator of age and landslide susceptibility, and the spatial inventory of prehistoric landslides: Green River valley, Washington

Max Bordal (M.S., 2018), Quantifying Knickpoint Behavior and Erosion Mechanisms in an Urbanized Watershed, Bull Mountain, Washington County, Oregon, and (B.S. Honors Thesis, 2014), Numerical modeling of the transient response of rivers to tectonic perturbations

Justin McCarley (M.S., 2018), Using Repeat Terrestrial Laser Scanning and Photogrammetry to Monitor Reactivation of the Silt Creek Landslide in the Western Cascade Mountains, Linn County, Oregon, and (B.S. Computer Applications Minor project, 2014), Using image correlation software to measure landslide surface velocity fields

Joann Nelson (B.S. Geology Thesis, 2017), Image correlation of repeat lidar to quantify landslide deformation

Angela Piller (B.S. Honors Thesis, 2016), Landslide hazard mapping in Rwanda using logistic regression

Bryan Allen (B.S. Honors Thesis, 2016), Analysis of hydrologic flow paths within a large landslide complex

Dustin Cramer (B.S. McNair Scholar, 2015), Grain size effects on friction angles of scree slopes