Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica
Testing and application of a model for snow redistribution (Snow_Blow) in the Ellsworth Mountains, Antarctica
复制标题
南极洲埃尔斯沃斯山脉雪再分布模型(Snow_Blow)的测试和应用
DOI:
10.1017/jog.2019.70
复制
发表时间:
2019
影响因子:
3.4
通讯作者:
Mills S
中科院分区:
文献类型:
--
作者:
Mills S
Wind-driven snow redistribution can increase the spatial heterogeneity of snow accumulation on ice caps and ice sheets, and may prove crucial for the initiation and survival of glaciers in areas of marginal glaciation. We present a snowdrift model (Snow_Blow), which extends and improves the model of Purves, Mackaness and Sugden (1999, Journal of Quaternary Science 14, 313–321). The model calculates spatial variations in relative snow accumulation that result from variations in topography, using a digital elevation model (DEM) and wind direction as inputs. Improvements include snow redistribution using a flux routing algorithm, DEM resolution independence and the addition of a slope curvature component. This paper tests Snow_Blow in Antarctica (a modern environment) and reveals its potential for application in palaeoenvironmental settings, where input meteorological data are unavailable and difficult to estimate. Specifically, Snow_Blow is applied to the Ellsworth Mountains in West Antarctica where ablation is considered to be predominantly related to wind erosion processes. We find that Snow_Blow is able to replicate well the existing distribution of accumulating snow and snow erosion as recorded in and around Blue Ice Areas. Lastly, a variety of model parameters are tested, including depositional distance and erosion vs wind speed, to provide the most likely input parameters for palaeoenvironmental reconstructions.
登录
查看更多内容
影响因子:
1.6
作者:
D. Braaten;K. Ratzlaff
通讯作者:
K. Ratzlaff
影响因子:
2.3
作者:
C. Benson;M. Sturm
通讯作者:
M. Sturm
影响因子:
3.2
作者:
Bernhardt, M.;Zaengl, G.;Mauser, W.
通讯作者:
Mauser, W.
影响因子:
4
作者:
S. Mills;S. Grab;B. Rea;S. Carr;Aidan Farrow
通讯作者:
Aidan Farrow
影响因子:
2.9
作者:
R. Mott;F. Faure;M. Lehning;Henning Lӧwe;B. Hynek;Gernot Michlmayer;A. Prokop;Wolfgang Schӧner
通讯作者:
Wolfgang Schӧner