Russell Callahan
PhD Student, University of Wyoming
University of Wyoming - University of Wyoming
BS, Environmental Science, Montana State University, 2015
I research geomorphology, weathering, and geophysics. I am specifically interested in using a combination of geophysics and regolith geochemistry to understand landsape evolution and regolith thickness. At the Southern Sierra Critical Zone, I am currently studying lithologic, topographic, and climactic drivers of regolith thickness in order to better understand how landscapes evolve over space and time. I'm joining the Southern Sierra CZO from Montana State University where I was an undergraduate researcher. I am currently a PhD student at University of Wyoming. My past education includes a Bachelors of Science in Environmental Science from Montana State University, 2015.
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CZO Publications
Papers/Books
2019
Arrested development: Erosional equilibrium in the southern Sierra Nevada, California, maintained by feedbacks between channel incision and hillslope sediment production. Callahan, R.P., Ferrier, K.L., Dixon, J., Dosseto, A., Hahm, W.J., Jessup, B.S., Miller, S.N., Hunsaker, C.T., Johnson, D.W., Sklar, L.S., Riebe, C.S. (2019): GSA Bulletin Cross-CZO
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
Other CZO Publications
2017
Mountain erosion over decades and millennia: New insights from sediment yields and cosmogenic nuclides. Callahan, R. P.; Riebe, C. S.; Ferrier K. (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract EP33C-1950.
2017
The influence of subsurface porosity and bedrock composition on ecosystem productivity and drought resilience in the Sierra Nevada Batholith, California . Riebe, C. S.; Callahan, R. P.; Goulden, M.; Pasquest, S.; Flinchum, B. A.; Taylor, N. J.;. Holbrook S. (2017): Fall Meeting, American Geophysical Union, December 2017. Abstract EP53D-1762.
2016
Using Cosmogenic and U-Series Nuclides in Stream Sediment to Test Hypotheses About Mountain Landscape Evolution . Callahan, R., Riebe, C., Dosseto, A. (2016): Goldschmidt Abstracts. Yokohama, Japan
2016
Probing the critical zone using passive- and active-source estimates of subsurface shear-wave velocities. Callahen, R.P.; Taylor, N.J.; Pasquet, S.; Dueker, K.G.; Riebe, C.S.; Holbrook, W.S. (2016): Fall Meeting, American Geophysical Union, December 2016. Abstract EP43C-0966.
2016
Comprehensive seismic surveys suggest that subsurface water-holding capacity is secondary to bedrock nutrient content as a regulator of vegetation productivity in the Sierra Nevada Batholith, California. Taylor, N.J.; Riebe, C.S.; Dueker, K.G.; Goulden, M.; Flinchum, B.A.; Pasquet, S.; Callahan, R.P.; Hahm, W.J.; Keifer, I.S.; Holbrook, W.S. (2016): Fall Meeting, American Geophysical Union, December 2016. Abstract EP43C-0964.
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