Journal
CRYOSPHERE
Volume 14, Issue 12, Pages 4603-4609Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/tc-14-4603-2020
Keywords
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Funding
- Thwaites Ground Geophysics [OPP1738934]
- NASA Cryospheric Sciences Thwaites Altimetry award [NNX16AM01G, NNX17AG54G]
- NASA sea-level change team grant [80NSSC17K0698]
- NSF-NERC International Thwaites Glacier Collaboration [OPP-1738934]
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A system of subglacial lakes drained on Thwaites Glacier from 2012-2014. To improve coverage for subsequent drainage events, we extended the elevation and icevelocity time series on Thwaites Glacier through austral winter 2019. These new observations document a second drainage cycle in 2017/18 and identified two new lake systems located in the western tributaries of Thwaites and Haynes glaciers. In situ and satellite velocity observations show temporary < 3% speed fluctuations associated with lake drainages. In agreement with previous studies, these observations suggest that active subglacial hydrology has little influence on thinning and retreat of Thwaites Glacier on decadal to centennial timescales.
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