Maciej K Obryk, Ph.D.


Research Interests

My research is generally focused on hydroclimatology and spans from the Antarctic to Cascade volcanoes. I’m interested in the response of the cryosphere, such as icy debris fields or perennially ice-covered lakes, to changing climate. I currently manage a large-scale experimental debris flow flume facility and my primary research is on initiation and rapid movement of icy/rocky debris flows, which occur on the volcanoes’ flanks.

My ad hoc projects are:
-assessing landslide inventory completeness
-testing off-the-shelf technologies for debris flow detection

Professional Experience

Research Hydrologist, USGS, Cascades Volcano Observatory, 2019-present
Hydrologist, USGS, Cascades Volcano Observatory, 2017-2019
Postdoctoral Fellow, Department of Geology, Portland State University, 2014-2017
Postdoctoral Fellow, Department of Geology and Geophysics, Louisiana State University, 2014-2017.


Ph.D., Earth and Environmental Science, University of Illinois at Chicago, 2014.
B.S., Earth and Environmental Science, University of Illinois at Chicago, 2008.


Obryk, M. K., George, D. L., Mirus, B. B., 2021. A new era of debris flow experiments in the Oregon woods. EOS. 102. doi: 10.1029/2021EO153932

Rengers, R. K., Rapstine, T. D., Olsen, m., Allstadt, K. E., Iverson, R. M., Leshchinsky, B., Obryk, M. K., Smith, J. B., 2021. Using High Sample Rate Lidar to Measure Debris-Flow Velocity and Surface Geometry. Environmental and Engineering Geoscience, 27 (1): 113–126. doi: 10.2113/EEG-D-20-00045

Allstadt, K. E., Farin, M., Iverson, R. M., Obryk, M. K., Kean, J. W., & Tsai, V. C., et al., 2020. Measuring basal force fluctuations of debris flows using seismic recordings and empirical Green's functions. J. Geophys. Res. Earth Surface.125, e2020JF005590. doi: 10.1029/2020JF005590

Rapstine, T. D., Rengers, F. K., Allstadt, K. E., Iverson, R. M., Smith, J. B., Obryk, M. K., et al., 2020. Reconstructing the velocity and deformation of a rapid landslide using multiview video. J. Geophys. Res. Earth Surface. 125, e2019JF005348. doi: 10.1029/2019JF005348

Obryk, M. K., Doran, P. T., Fountain, A. G., Myers, M., & McKay, C. P., 2020. Climate from the McMurdo Dry Valleys, Antarctica, 1986–2017: Surface air temperature trends and redefined summer season. J. Geophys. Res. Atmospheres. 125, e2019JD032180. doi: 10.1029/2019JD032180

Obryk, M. K., Doran, P. T., Priscu, J. C., 2019. Prediction of ice-free conditions for a perennially ice-covered Antarctic lake. J. Geophys. Res. Earth Surface. doi: 10.1029/2018JF004756

Renger, F. K., Rapstine, T., Allstadt, K. E., Olsen, M., Bunn, M., Iverson, R. M., Kean, J. W., Leshchinsky, B., Logan, M., Sharifi-Mood, M., Obryk, M. K., Smith, J. B., 2019. Real-time monitoring of debris-flow velocity and mass deformation from field experiments with high sample rate lidar and video. Seventh International Conference on Debris-Flow Hazards Mitigation. doi: 10.25676/11124/173219

Levy, J. S., Fountain, A. G., Obryk, M. K., Telling, J., Glennie, C., Pettersson, R., Gooseff, M., van Horn, D., 2018. Decadal topographic change in the McMurdo Dry Valleys of Antarctica: Theromkarst subsidence, surface roughening, and transfer of water storage from the cryosphere to the hydrosphere. Geomorphology. doi: 10.1016/j.geomorph.2018.09.012

Obryk, M. K., Fountain, A. G., Doran, P. T., Lyons, W. B., Eastman, R., 2018. Drivers of solar radiation variability in the McMurdo Dry Valleys, Antarctica. Scientific Reports. doi: 10.1038/s41598-018-23390-7

Spigel, R. H., Priscu, J. C., Obryk, M. K., Doran, P. T., Stone, W., 2018. The physical limnology of a permanently ice-covered and chemically stratified Antarctic lake using high resolution spatial data from an autonomous underwater vehicle. Limnology and Oceanography doi:10.1002/lno.10768

Fountain, A. G., Fernandez-Diaz, J. C., Obryk, M. K., Levy, J., Gooseff, M., Van Horn, D., Morin, P., Shrestha, R., 2017. High-resolution elevation mapping of the McMurdo Dry Valleys, Antarctica, and surrounding regions. Earth System Science Data. doi: 10.5194/essd-9-435-2017

Obryk, M. K., Doran, P. T., Waddington, E. D., McKay, C. P., 2017. The influence of föehn winds on Glacial Lake Washburn and paleotemperatures in the McMurdo Dry Valleys, Antarctica, during the Last Glacial Maximum. Antarctic Science. doi: 10.1017/S0954102017000062

Sudman, Z., Gooseff, M. N., Fountain, A. G., Levy, J. S., Obryk, M. K., Van Horn, D., 2017. Impacts of permafrost degradation on a stream in Taylor Valley, Antarctica. Geomorphology. doi: 10.1016/j.geomorph.2017.02.009

Obryk, M. K., Doran, P. T., Friedlaender, A. S., Gooseff, M., Li, W., Morgan-Kiss, R., Priscu, J. C., Schofield, O., Stammejohn, S., Steinberg, D., Ducklow H. W., 2016. Responses of Antarctic marine and freshwater ecosystems to changing ice conditions. BioScience, doi: 10.1093/biosci/biw109

Fountain, A. G., Saba, G., Adams, B., Doran, P. T., Fraser, W., Gooseff, M., Obryk, M.K., Priscu, J., Stammerjohn, S., Virginia, R. A., 2016. The impact of a large-scale climate event on Antarctic ecosystem processes. BioScience, doi: 10.1093/biosci/biw110

Castendyk, D., Obryk, M. K., Leidman, S. Z., Gooseff. M., Hawes, I., 2016. Lake Vanda: a sentinel for climate change in the McMurdo Sound region of Antarctica. Global and Planetary Change, doi: 10.1016/j.gloplacha.2016.06.007

Obryk, M. K., Doran, P. T., Hicks, J. A., McKay, C. P., Priscu J. C., 2016. Modeling perennial ice covers on stratified lakes of the Taylor Valley, Antarctica. Journal of Glaciology. doi: 10.1017/jog.2016.69

Hawes, I., Jungblut, A., Obryk, M. K., Doran, P. T., 2016. Growth dynamics of laminated microbial mats in response to variable irradiance in an Antarctic lake. Freshwater Biology, 61, doi: 10.1111/fwb.12715

Dugan, H. A., Arcone, S. A., Obryk, M. K, Doran, P. T., 2016. High-resolution ground penetrating radar profiles of perennial lake ice in the McMurdo Dry Valleys: Horizon attributes, unconformities and subbottom penetration. Geophysics, 81(1), WA13-WA20. doi: 10.1190/geo2015-0159.1

Allen, P. P., Hewitt, R., Obryk, M. K., Doran, P. T., 2015. Sediment transport dynamics on an ice-covered lake: the “floating” boulders of Lake Hoare, Antarctica. Antarctic Science, doi:10.1017/S0954102014000558

Obryk, M. K., Doran, P. T., Priscu, J. C., 2014. The permanent ice-cover of Lake Bonney, Antarctica: The influence of thickness and sediment distribution on photosynthetically available radiation and chlorophyll-a distribution in the underlying water column, J. Geophys. Res. Biogeosci, 119, doi:10.1002/2014JG002672

Dugan, H. D., Obryk, M. K., Doran, P. T., 2013. Lake ice ablation rates from permanently ice-covered Antarctic lakes. Journal of Glaciology, 59, 215, doi:10.3189/2013JoG12J080