斯匹茨卑尔根(斯瓦尔巴群岛)冰缘湖泊的清查方法

IF 1.6 4区 地球科学 Q4 ENVIRONMENTAL SCIENCES
K. Romashova, R. Chernov
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引用次数: 0

摘要

本文讨论了小冰期后由于斯匹茨卑尔根(斯瓦尔巴群岛)冰川减少而形成的冰缘湖。提出了一种基于挪威极地研究所地图资料和遥感方法的斯匹茨卑尔根(斯瓦尔巴群岛)冰缘湖泊清查方法。小冰河期结束后的20世纪初,由于斯瓦尔巴群岛的冰川消融,形成了这样的湖泊。以冰缘湖泊的三个形态特征作为选择标准:湖泊与冰川接触,湖泊位于终碛内或与冰川接壤,每一个特征都足够。调查的结果是,在斯匹茨卑尔根(斯瓦尔巴群岛)发现了705个冰缘湖泊。湖泊数量最多的是位于群岛的东北部,那里的地形解剖得很差。最大的湖泊群位于温暖的西海岸的山谷冰川的冰碛上。将冰缘湖泊划分为5种类型:冰坝湖(19%)、冰川前缘湖(30%)、冰碛上热岩溶湖(27%)、冰碛坝湖(15%)和末碛湖(9%)。数量最多的是毗邻冰川的冰缘湖泊(约占50%)。它们的总面积为162平方公里,占所有冰缘湖泊总面积的87%。另外一半的湖泊已经形成了海岸,它们的转变在未来可能会慢得多。湖泊类型的数量比例反映了群岛湖泊扩张过程的活跃阶段。湖泊群的比例可以作为群岛气候变化的明确指标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Inventory methodology of periglacial lakes in Spitzbergen (Svalbard)
The paper discusses periglacial lakes, which were formed after the Little Ice Age due to the reduction of Spitzbergen (Svalbard) glaciation. A method for inventorying the periglacial lakes in Spitzbergen (Svalbard) is proposed based on the Norwegian Polar Institute cartographic materials and remote sensing methods. Such lakes have been formed due to deglaciation in Svalbard since the beginning of the 20th century after the Little Ice Age. Three morphological features of the periglacial lake were used as selection criteria: the lake is in contact with the glacier, the lake is located within the terminal moraine or borders on it, each of which is sufficient.As a result of the inventory, 705 periglacial lakes have been found in Spitzbergen (Svalbard). The largest number of lakes is located in the northeastern part of the archipelago, where the relief is poorly dissected. The largest clusters of lakes are found on the moraines of mountain-valley glaciers located on the warmer western coasts. The periglacial lakes were divided into 5 types: glacier-dammed lakes (19 %), lakes in contact with the glacier front (30 %), thermokarst lakes on the moraine (27 %), moraine-dammed lakes (15 %) and lakes in contact with the terminal moraine (9 %). The most numerous were periglacial lakes adjoining the glacier (about 50 %). Their total area is 162 km2 and accounts for 87 % of the total area of all periglacial lakes. The other half of the lakes have formed shores, and their transformation is likely to be much slower in the future. The quantitative ratio of lake types testifies to the active phase of the process of lake expansion in the archipelago. This ratio of lakes by groups can be a clear indicator of climate change in the archipelago.
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来源期刊
CiteScore
3.00
自引率
5.00%
发文量
37
审稿时长
7 months
期刊介绍: The mission of Arctic, Antarctic, and Alpine Research (AAAR) is to advance understanding of cold region environments by publishing original scientific research from past, present and future high-latitude and mountain regions. Rapid environmental change occurring in cold regions today highlights the global importance of this research. AAAR publishes peer-reviewed interdisciplinary papers including original research papers, short communications and review articles. Many of these papers synthesize a variety of disciplines including ecology, climatology, geomorphology, glaciology, hydrology, paleoceanography, biogeochemistry, and social science. Papers may be uni- or multidisciplinary but should have interdisciplinary appeal. Special thematic issues and proceedings are encouraged. The journal receives contributions from a diverse group of international authors from academia, government agencies, and land managers. In addition the journal publishes opinion pieces, book reviews and in memoria. AAAR is associated with the Institute of Arctic and Alpine Research (INSTAAR) the oldest active research institute at the University of Colorado Boulder.
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