Articles | Volume 9, issue 6
The Cryosphere, 9, 2219–2235, 2015
https://doi.org/10.5194/tc-9-2219-2015
The Cryosphere, 9, 2219–2235, 2015
https://doi.org/10.5194/tc-9-2219-2015

Research article 01 Dec 2015

Research article | 01 Dec 2015

Observations of seasonal and diurnal glacier velocities at Mount Rainier, Washington, using terrestrial radar interferometry

K. E. Allstadt et al.

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Cited articles

Allstadt, K. and Malone, S. D.: Swarms of repeating stick-slip icequakes triggered by snow loading at Mount Rainier volcano, J. Geophys. Res.-Earth, 119, 1180–1203, https://doi.org/10.1002/2014JF003086, 2014.
Anderson, R. S., Anderson, S. P., MacGregor, K. R., Waddington, E. D., O'Neel, S., Riihimaki, C. A., and Loso, M. G.: Strong feedbacks between hydrology and sliding of a small alpine glacier, J. Geophys. Res.-Earth, 109, F03005, https://doi.org/10.1029/2004JF000120, 2014.
Bartholomaus, T. C., Anderson, R. S., and Anderson, S. P.: Response of glacier basal motion to transient water storage, Nat. Geosci., 1, 33–37, https://doi.org/10.1038/ngeo.2007.52, 2007.
Burgmann, R., Rosen, P. A., and Fielding, E. J.: Synthetic aperture radar interferometry to measure Earth's surface topography and its deformation, Annu. Rev. Earth Pl. Sc., 28, 169–209, https://doi.org/10.1146/annurev.earth.28.1.169, 2000.
Caduff, R., Schlunegger, F., Kos, A., and Wiesmann, A.: A review of terrestrial radar interferometry for measuring surface change in the geosciences, Earth Surf. Proc. Land., https://doi.org/10.1002/esp.3656, online first, 2014.
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Short summary
Terrestrial radar interferometry measurements allow us to capture the entire velocity field of several alpine glaciers at Mount Rainier, WA, and investigate glacier dynamics. We analyze spatial patterns and compare repeat measurements to investigate diurnal and seasonal glacier changes. We find no significant diurnal variability but a very large seasonal slowdown (25 to 50%) from July to November likely due to changes in subglacial water storage. Modeling suggests 91-99% of motion is sliding.