气候变化领域集成服务门户(CCPortal): Seismic control of large prehistoric rockslides in the Eastern Alps

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DOI	10.1038/s41467-021-21327-9
	Seismic control of large prehistoric rockslides in the Eastern Alps
	Oswald P.; Strasser M.; Hammerl C.; Moernaut J.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Large prehistoric rockslides tend to occur within spatio-temporal clusters suggesting a common trigger such as earthquake shaking or enhanced wet periods. Yet, trigger assessment remains equivocal due to the lack of conclusive observational evidence. Here, we use high-resolution lacustrine paleoseismology to evaluate the relation between past seismicity and a spatio-temporal cluster of large prehistoric rockslides in the Eastern Alps. Temporal and spatial coincidence of paleoseismic evidence with multiple rockslides at ~4.1 and ~3.0 ka BP reveals that severe earthquakes (local magnitude ML 5.5–6.5; epicentral intensity I0 VIII¼–X¾) have triggered these rockslides. A series of preceding severe earthquakes is likely to have progressively weakened these rock slopes towards critical state. These findings elucidate the role of seismicity in preparing and triggering large prehistoric rockslides in the European Alps, where rockslides and earthquakes typically occur in clusters. Such integration of multiple datasets in other formerly glaciated regions with low to moderate seismicity will improve our understanding of catastrophic rockslide drivers. © 2021, The Author(s).
语种	英语
scopus关键词	assessment method; catastrophic event; earthquake magnitude; earthquake trigger; landslide; paleoseismicity; prehistoric; rock mechanics; seismic data; seismicity; shaking table test; spatiotemporal analysis; trigger mechanism; article; earthquake; human; Alps; Eastern Alps
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251515
作者单位	University of Innsbruck, Department of Geology, Innsbruck, Austria; Central Institute for Meteorology and Geodynamics, Vienna, Austria
推荐引用方式 GB/T 7714	Oswald P.,Strasser M.,Hammerl C.,et al. Seismic control of large prehistoric rockslides in the Eastern Alps[J],2021,12(1).
APA	Oswald P.,Strasser M.,Hammerl C.,&Moernaut J..(2021).Seismic control of large prehistoric rockslides in the Eastern Alps.Nature Communications,12(1).
MLA	Oswald P.,et al."Seismic control of large prehistoric rockslides in the Eastern Alps".Nature Communications 12.1(2021).