气候变化领域集成服务门户(CCPortal): Repeated catastrophic valley infill following medieval earthquakes in the Nepal Himalaya

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DOI	10.1126/science.aac9865
	Repeated catastrophic valley infill following medieval earthquakes in the Nepal Himalaya
	Schwanghart W.; Bernhardt A.; Stolle A.; Hoelzmann P.; Adhikari B.R.; Andermann C.; Tofelde S.; Merchel S.; Rugel G.; Fort M.; Korup O.
发表日期	2016
ISSN	0036-8075
起始页码	147
结束页码	150
卷号	351 期号:6269
英文摘要	Geomorphic footprints of past large Himalayan earthquakes are elusive, although they are urgently needed for gauging and predicting recovery times of seismically perturbed mountain landscapes. We present evidence of catastrophic valley infill following at least three medieval earthquakes in the Nepal Himalaya. Radiocarbon dates from peat beds, plant macrofossils, and humic silts in fine-grained tributary sediments near Pokhara, Nepal's second-largest city, match the timing of nearby M > 8 earthquakes in ∼1100,1255, and 1344 C.E.The upstream dip of tributary valley fills and x-ray fluorescence spectrometry of their provenance rule out local sources. Instead, geomorphic and sedimentary evidence is consistent with catastrophic fluvial aggradation and debris flows that had plugged several tributaries with tens of meters of calcareous sediment from a Higher Himalayan source >60 kilometers away.
英文关键词	calcium carbonate; carbon 14; carbonic acid; limestone; pyrite; soil; aggradation; catastrophic event; debris flow; earthquake; fluorescence; geomorphology; mountain region; provenance; tributary; valley; Article; avalanche; earthquake; geomorphology; landscape; macrofossil; Middle Ages; Nepal; priority journal; sediment transport; X ray fluorescence; chemistry; city; disaster; earthquake; fossil; history; human; mortality; plant; radiometric dating; river; sediment; soil; spectrometry; Gandaki; Himalayas; Nepal; Pokhara; Cities; Disasters; Earthquakes; Fossils; Geologic Sediments; History, Medieval; Humans; Nepal; Plants; Radiometric Dating; Rivers; Soil; Spectrometry, X-Ray Emission
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245401
作者单位	Institute of Earth and Environmental Science, University of Potsdam, Potsdam, Germany; Institute of Geographical Sciences, Freie Universität Berlin, Berlin, Germany; Institute of Engineering, Tribhuvan University, Kathmandu, Nepal; Helmholtz-Zentrum Potsdam, German Centre for Geosciences GFZ, Germany; Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Dresden, Germany; CNRS UMR 8586 Prodig, Département de Géographie, Université Paris-Diderot-SPC, Paris, France
推荐引用方式 GB/T 7714	Schwanghart W.,Bernhardt A.,Stolle A.,et al. Repeated catastrophic valley infill following medieval earthquakes in the Nepal Himalaya[J],2016,351(6269).
APA	Schwanghart W..,Bernhardt A..,Stolle A..,Hoelzmann P..,Adhikari B.R..,...&Korup O..(2016).Repeated catastrophic valley infill following medieval earthquakes in the Nepal Himalaya.Science,351(6269).
MLA	Schwanghart W.,et al."Repeated catastrophic valley infill following medieval earthquakes in the Nepal Himalaya".Science 351.6269(2016).