Shrinkage of the tarns in the High Tatras (Slovakia, Poland)

IF 0.5 Q3 GEOGRAPHY Geographia Cassoviensis Pub Date : 2021-01-01 DOI:10.33542/gc2021-1-01
Juraj Kapista, F. Petrovič, J. Hreško, Z. Rączkowska
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Abstract

This paper assesses the shrinkage of glacial lakes in the High Tatras by analysing the series of historical and actual orthophotomaps from 1949 to 2018. The shoreline dynamics during this period were established by detailed retrospective remote sensing, and the decrease in the former surface of the water was caused by intensive interaction between morphodynamic processes and the lake basins. Herein, we have identified 38 tarns with an assumed decline in the area. This assumption was based on a comparison of initial visual analysis of the historical aerial photographs and the current orthophotomaps which capture all High Tatras tarns. We selected ten tarns with the largest or most representative changes and performed detailed cartographic analysis on them. We also attempted this analysis over shorter periods whenever possible and herein we established from 2.5 to 32.2% decrease in lake water surface area during the monitored period. This decrease in shallow lake basins was accompanied by the presence of accumulated debris flows, fine fraction fluvial-proluvial deposits, and vegetation. The shallow glacial lake basins are sensitive indicators of irreversible changes in their catchment areas and this study, therefore, highlights the effectiveness of combining detailed orthophotomaps and historical aerial photos and GIS tools in researching glacial lakes shoreline dynamics in the alpine landscape. Retrospective shoreline analysis facilitates the assessment of the effects of morphodynamic processes on the development of tarns from the postglacial period until today.
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高塔特拉山脉(斯洛伐克、波兰)的水帘收缩
本文通过分析1949 - 2018年的一系列历史和实际正射影像图,对高塔特拉冰川湖泊的萎缩进行了评估。这一时期的岸线动态是通过详细的回顾性遥感建立的,以前水面的减少是由形态动力学过程和湖盆的强烈相互作用造成的。在这里,我们已经确定了38个假设区域下降的目标。这一假设是基于对历史航拍照片的初步视觉分析与目前捕获所有高塔特拉高地的正射影成像图的比较。我们选择了十个变化最大或最具代表性的地区,并对它们进行了详细的制图分析。我们还尽可能在较短的时间内进行分析,在此我们确定在监测期间湖泊水面面积减少了2.5%至32.2%。浅湖盆地的减少伴随着堆积的泥石流、细粒河流-洪积沉积物和植被的存在。浅层冰湖流域是其集水区不可逆变化的敏感指标,因此,本研究强调了将详细正射影像图和历史航空照片结合GIS工具研究高山景观中冰湖岸线动态的有效性。回顾性的海岸线分析有助于评估自冰期后至今形态动力学过程对湖泊发育的影响。
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来源期刊
CiteScore
0.80
自引率
0.00%
发文量
4
期刊介绍: Geographia Cassoviensis is a biannual peer-reviewed journal published by the Pavol Jozef Šafárik University in Košice since 2007. It is available both in print and open-access electronic version. The journal publishes original research articles from Geography and other closely-related research fields. Since 2016 the journal is indexed in SCOPUS and ERIH PLUS - European Reference Index for Humanities and Social Sciences, and since 2017 also in Emerging Sources Citation Index by Clarivate Analytics.
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