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首页> 外文期刊>Geosciences >A New Landslide Inventory for the Armenian Lesser Caucasus: Slope Failure Morphologies and Seismotectonic Influences on Large Landslides
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A New Landslide Inventory for the Armenian Lesser Caucasus: Slope Failure Morphologies and Seismotectonic Influences on Large Landslides

机译：亚美尼亚较小高加索的新滑坡库存：对大滑坡的坡度失败形态和地震局部影响

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摘要

Landslide hazard analyses in Armenia require consideration of the seismotectonic context of the Lesser Caucasus. As it is located near the center of the Arab-Eurasian collision, the Lesser Caucasus is characterized by its complex geology, dense fault network and mountainous relief; it is marked by recent volcanic and seismic activity largely influencing slope stability at different scales. We therefore sought to identify all major landslides in the Armenian Lesser Caucasus and to understand the environmental factors contributing to regional landslide susceptibility. We performed spatial and size-frequency analyses using two landslide catalogues as inputs: “Georisk”, provided by the Georisk Scientific Research Company, and “Matossian”, herein. Our spatial analyses show that landslide susceptibility depends on many factors according to the area considered: near faults, a tectonic influence on slope stability is clearly observable, whereas high concentrations of landslides in northern mountain regions, marked by a wetter climate and far from known active faults, show that climatic factors also strongly contribute to slope-failure potential. The influence of volcanoes and volcanic deposits on the development of mass movements is unclear and requires further analysis. The aforementioned inventories do not include any records of volcanic flank collapses, although we expect at least one case in the eastern Lesser Caucasus.
机译：亚美尼亚的滑坡危害分析需要考虑较小的高加索地震型背景。由于它位于阿拉伯欧亚碰撞中心附近，较小的高加索的特点是其复杂地质，密集的故障网络和山区浮雕;它标志着最近的火山岩和地震活动主要影响不同尺度的边坡稳定性。因此，我们试图识别亚美尼亚较小高加索的所有主要山体滑坡，了解有助于区域山体滑坡易感性的环境因素。我们使用两个滑坡目录作为输入进行了空间和尺寸 - 频率分析：Georisk Scientific Research Company和“Matossian”提供的“Georisk”，以及“Matossian”。我们的空间分析表明，滑坡易感性取决于根据所考虑的地区的许多因素：近断层，对边坡稳定性的构造影响显而易见，而北部山区的高浓度是潮湿的气候，而且来自潮湿的气候，而且来自众所周知的气候缺点，表明气候因素也强烈促进了斜坡失效潜力。火山和火山存款对大规模运动发展的影响尚不清楚，需要进一步分析。上述库存不包括火山侧翼坍塌的任何记录，尽管我们预计在东部较小的高加索中至少有一个案例。

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