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Climatic and structural controls on Late‐glacial and Holocene rockfall occurrence in high‐elevated rock walls of the Mont Blanc massif (Western Alps)
Earth Surface Processes and Landforms ( IF 2.8 ) Pub Date : 2020-07-12 , DOI: 10.1002/esp.4952 Xavi Gallach 1, 2 , Julien Carcaillet 2 , Ludovic Ravanel 1 , Philip Deline 1 , Christophe Ogier 2 , Magali Rossi 1 , Emmanuel Malet 1 , David Garcia‐Sellés 3
Earth Surface Processes and Landforms ( IF 2.8 ) Pub Date : 2020-07-12 , DOI: 10.1002/esp.4952 Xavi Gallach 1, 2 , Julien Carcaillet 2 , Ludovic Ravanel 1 , Philip Deline 1 , Christophe Ogier 2 , Magali Rossi 1 , Emmanuel Malet 1 , David Garcia‐Sellés 3
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In the Mont Blanc massif (European Western Alps), rockfalls are one of the main natural hazards for alpinists and infrastructure. Rockfall activity after the Little Ice Age is well documented. An increase in frequency during the last three decades is related to permafrost degradation caused by rising air temperatures. In order to understand whether climate exerts a long‐term control on rockfall occurrence, a selection of paleo‐rockfall scars was dated in the Glacier du Géant basin [>3200 m above sea level (a.s.l.)] using terrestrial cosmogenic nuclides. Rockfall occurrence was compared to different climatic and glacial proxies.
中文翻译：
气候和结构控制对勃朗峰地块（西阿尔卑斯山）高海拔岩墙中晚冰河和全新世岩崩的发生
在勃朗峰地块（欧洲西部阿尔卑斯山），落石是登山者和基础设施的主要自然灾害之一。小冰河时期后的落石活动有据可查。在过去的三十年中，频率的增加与空气温度升高引起的永久冻土退化有关。为了了解气候是否能长期控制落石的发生，已使用陆生宇宙成因核素在Glacier duGéant盆地[海拔> 3200 m（asl）]中选择了古落石疤痕。将落石的发生与不同的气候和冰川代理进行了比较。
更新日期：2020-07-12
中文翻译：
气候和结构控制对勃朗峰地块（西阿尔卑斯山）高海拔岩墙中晚冰河和全新世岩崩的发生
在勃朗峰地块（欧洲西部阿尔卑斯山），落石是登山者和基础设施的主要自然灾害之一。小冰河时期后的落石活动有据可查。在过去的三十年中，频率的增加与空气温度升高引起的永久冻土退化有关。为了了解气候是否能长期控制落石的发生，已使用陆生宇宙成因核素在Glacier duGéant盆地[海拔> 3200 m（asl）]中选择了古落石疤痕。将落石的发生与不同的气候和冰川代理进行了比较。
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