Mountain permafrost dynamics within a recently exposed glacier forefield inferred by a combined geomorphological, geophysical and photogrammetrical approach
Mountain permafrost dynamics within a recently exposed glacier forefield inferred by a combined geomorphological, geophysical and photogrammetrical approach
复制标题
通过地貌学、地球物理和摄影测量相结合的方法推断最近暴露的冰川前场内的山地永久冻土动态
DOI：
10.1002/esp.1488
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发表时间：
2007
影响因子：
3.3
通讯作者：
A. Kääb
中科院分区：
文献类型：
--
作者：
C. Kneisel;A. Kääb
利用地貌观测、地电探测和 Muragl 冰川前场表面运动的摄影测量，对高度复杂的冰川和冰缘地貌进行了综合分析，该地貌由推式冰碛、蠕动永久冻土和紧邻的无永久冻土冰碛组成。电阻率层析成像被认为是冰缘永久冻土相关环境研究的重要多功能地球物理方法。与地表位移测量的联合应用为研究与富含冰的永久冻土相关的冰缘地貌提供了一个有前途的工具，以便更全面地表征永久冻土特征和冰缘形态动力学的地貌解释。本文描述的片状多年冻土分布模式是由多种因素决定的，包括沉积物特征、积雪分布和持续时间、坡向和以前的冰川分布和热状况。冰川前场内最近和现代的永久冻土动态包括加积、退化和永久冻土蠕变。版权所有 © 2007 约翰·威利父子有限公司
Geomorphological observations, geoelectrical soundings and photogrammetric measurements of surface movement on the Muragl glacier forefield were used to obtain an integrative analysis of a highly complex glacial and periglacial landform consisting of a push moraine, creeping permafrost and permafrost‐free glacial till in close proximity. Electrical resistivity tomography is considered as an important multifunctional geophysical method for research in periglacial permafrost related environments. Joint application with measurements of surface displacements offers a promising tool for investigating periglacial landforms related to ice‐rich permafrost for a more comprehensive characterization of permafrost characteristics and geomorphological interpretation of periglacial morphodynamics. The patchy permafrost distribution pattern described in this paper is determined by several factors, including the sediment characteristics, the snow cover distribution and duration, the aspect and the former glacier distribution and thermal regime. Recent and modern permafrost dynamics within the glacier forefield comprise aggradation, degradation and permafrost creep. Copyright © 2007 John Wiley & Sons, Ltd.