Ice‐dammed lake drainage in west Greenland: Drainage pattern and implications on ice flow and bedrock motion
Ice‐dammed lake drainage in west Greenland: Drainage pattern and implications on ice flow and bedrock motion
复制标题
格陵兰岛西部冰坝湖排水:排水模式及其对冰流和基岩运动的影响
DOI:
10.1002/2017gl074081
复制
发表时间:
2017
影响因子:
5.2
通讯作者:
J. Mouginot
中科院分区:
文献类型:
--
作者:
K. Kjeldsen;S. Khan;A. Bjørk;K. Nielsen;J. Mouginot
Ice‐dammed lakes drain frequently in Greenland, but the impacts of these events differ between sites. Here we study the quasi‐cyclic behavior of the ~40 km2 Lake Tininnilik in west Greenland and its impact on ice flow and crustal deformation. Data reveal rapid drainage of 1.83 ± 0.17 km3 of water in less than 7 days in 2010, leading to a speedup of the damming glacier, and an instantaneous modeled elastic bedrock uplift of 18.6 ± 0.1 mm confirmed by an independent lakeside GPS record. Since ice‐dammed lakes are common on Greenland, our results highlight the importance of including other sources of surface loading in addition to ice mass change, when assessing glacial isostatic adjustment or elastic rebound using geodetic data. Moreover, the results illustrates a linkage between subglacial discharge and ice surface velocity, important for assessing ice flux, and thus mass balance, in a future warming climate.
影响因子:
13.6
作者:
Khan SA;Sasgen I;Bevis M;van Dam T;Bamber JL;Wahr J;Willis M;Kjær KH;Wouters B;Helm V;Csatho B;Fleming K;Bjørk AA;Aschwanden A;Knudsen P;Munneke PK
通讯作者:
Munneke PK
DOI:
10.5194/essdd-6-27-2013
发表时间:
2013
期刊:
--
影响因子:
--
作者:
Ahlstrøm A
通讯作者:
Ahlstrøm A