期刊
GEOMORPHOLOGY
卷 373, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.geomorph.2020.107479
关键词
Holocene; Antarctica; Nivation; Landscape modelling
资金
- Ministry of Education, Youth and Sports of the Czech Republic projects [LM2015078, CZ.02.1.01/0.0/0.0/16_013/0001708, VAN 2020/1]
- Masaryk University project [MUNI/A/1576/2018]
This study aims to describe the geomorphological processes related to snow patches in the ice-free environment of James Ross Island in Maritime Antarctica. The research found that the redistribution of snow by wind and the moisture from melting snow play a key role in landscape shaping.
In this study, we aim to describe geomorphological processes related to snow patches in the ice-free environment of James Ross Island located in Maritime Antarctica. The area of interest for this study is situated on Cape Lachman and consists of an approximately 1500 m long and 300 m wide oval-shaped depression with two shallow lakes at the bottom. Due to the varied aspect of the slopes, large snow accumulations form in the southern part of the depression, where the slopes exhibit a lee aspect towards the prevailing southwestern wind. Within the semi-arid conditions of James Ross Island, the redistribution of snow by wind and the availability of moisture from the melting snow play a key role in shaping of the landscape. Via repeated UAV surveys, field campaigns and construction of a digital terrain model of the study area, we were able to identify the specific landforms that have been shaped by nival processes, such as winnowing of the fine material and its subsequent transport downslope; and mass wasting, resulting from slumping of the meltwater-saturated active layer. We developed a three-step model of landscape evolution throughout the Holocene, which helps to explain how snow-related processes contribute to landscape shaping within the ice-free environment of James Ross Island. (C) 2020 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据