The current state of Lake Dålk (Larsemann Hills, East Antarctica)

IF 1.5 4区地球科学 Q3 ECOLOGY

Polar Science Pub Date : 2023-12-01 DOI:10.1016/j.polar.2023.101006

Anastasiia Sukhanova , Dmitry Bantsev , Sergey Popov , Alina Boronina , Egor Shimanchuk , Sergey Polyakov

引用次数: 0

Abstract

The study focuses on the current state of englacial Lake Dålk (Larsemann Hills Oasis), which was completely devastated in January 2017 by a catastrophic outburst and formed again in February 2020. A set of works including ground-penetrating radar (GPR) profiling, geodetic survey, core drilling, thermometric measurements and isotopic analysis was performed. As a result, new data were obtained about the modern boundaries of the reservoir, ice thickness and depths, as well as about the peculiarities of freezing of the lake after re-formation. Based on the field data obtained, one-dimensional mathematical modeling of Lake Dålk freezing was carried out, the results of which showed further scenarios of its evolution.

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达尔克湖（南极洲东部拉尔斯曼山）的现状

这项研究的重点是冰川湖 Dålk（拉尔斯曼丘陵绿洲）的现状，该湖在 2017 年 1 月被一场灾难性的溃决完全摧毁，并在 2020 年 2 月再次形成。我们开展了一系列工作，包括探地雷达（GPR）剖面测量、大地测量、岩心钻探、温度测量和同位素分析。因此，获得了有关现代水库边界、冰层厚度和深度以及湖泊重新形成后冻结特征的新数据。根据获得的实地数据，对达尔克湖的冰冻进行了一维数学建模，其结果显示了达尔克湖的进一步演变方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polar Science ECOLOGY-GEOSCIENCES, MULTIDISCIPLINARY

CiteScore

3.90

自引率

5.60%

发文量

期刊介绍： Polar Science is an international, peer-reviewed quarterly journal. It is dedicated to publishing original research articles for sciences relating to the polar regions of the Earth and other planets. Polar Science aims to cover 15 disciplines which are listed below; they cover most aspects of physical sciences, geosciences and life sciences, together with engineering and social sciences. Articles should attract the interest of broad polar science communities, and not be limited to the interests of those who work under specific research subjects. Polar Science also has an Open Archive whereby published articles are made freely available from ScienceDirect after an embargo period of 24 months from the date of publication. - Space and upper atmosphere physics - Atmospheric science/climatology - Glaciology - Oceanography/sea ice studies - Geology/petrology - Solid earth geophysics/seismology - Marine Earth science - Geomorphology/Cenozoic-Quaternary geology - Meteoritics - Terrestrial biology - Marine biology - Animal ecology - Environment - Polar Engineering - Humanities and social sciences.