Iceberg calving of Thwaites Glacier, West Antarctica: full-Stokes modeling combined with linear elastic fracture mechanics
نویسندگان
چکیده
منابع مشابه
Connected subglacial lake drainage beneath Thwaites Glacier, West Antarctica
We present conventional and swath altimetry data from Cryosat-2 revealing a system of subglacial lakes that drained between June 2013 and January 2014 under the central part of Thwaites Glacier, West Antarctica. Much of the 10 drainage happened in less than six months, with an apparent connection between three lakes spanning more than 130 km. Hydropotential analysis of the glacier bed shows a l...
متن کاملStrawman Science Motivation for Coordinated Multidisciplinary Research in the Amundsen Sea Embayment, West Antarctica Ad Hoc Pine Island Glacier/Thwaites Glacier Working Group
The West Antarctic Ice Sheet (WAIS) is the only remaining marine ice sheet from the last glacial period. The bed is primarily below sea level and slopes down from the coast to the interior. It has been hypothesized that the ice sheet may be susceptible to run-away grounding line retreat [Weertman, 1974] leading to rapid disintegration and sea level rise. Were the WAIS to completely melt, the wa...
متن کاملBed conditions of Pine Island Glacier, West Antarctica
Although 90% of Antarctica‟s discharge occurs via its fast-flowing ice streams, our ability to project future ice-sheet response has been limited by poor observational constraints on the ice-bed conditions used in numerical models to determine basal slip. We have helped address this observational deficit by acquiring and analysing a series of seismic reflection profiles to determine basal condi...
متن کاملIce sheets. Reverse glacier motion during iceberg calving and the cause of glacial earthquakes.
Nearly half of Greenland's mass loss occurs through iceberg calving, but the physical mechanisms operating during calving are poorly known and in situ observations are sparse. We show that calving at Greenland's Helheim Glacier causes a minutes-long reversal of the glacier's horizontal flow and a downward deflection of its terminus. The reverse motion results from the horizontal force caused by...
متن کاملOcean mixing beneath Pine Island Glacier ice shelf, West Antarctica
Ice shelves around Antarctica are vulnerable to an increase in ocean-driven melting, with the melt rate depending on ocean temperature and the strength of flow inside the ice-shelf cavities. We present measurements of velocity, temperature, salinity, turbulent kinetic energy dissipation rate, and thermal variance dissipation rate beneath Pine Island Glacier ice shelf, West Antarctica. These mea...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Cryosphere
سال: 2017
ISSN: 1994-0424
DOI: 10.5194/tc-11-1283-2017