气候变化领域集成服务门户(CCPortal): Geo-archaeological records of large Holocene tsunamis along the hyperarid coastal Atacama Desert in the major northern Chile seismic gap

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DOI	10.1016/j.quascirev.2019.07.038
	Geo-archaeological records of large Holocene tsunamis along the hyperarid coastal Atacama Desert in the major northern Chile seismic gap
	León T.; Vargas G.; Salazar D.; Goff J.; Guendon J.L.; Andrade P.; Alvarez G.
发表日期	2019
ISSN	0277-3791
起始页码	335
结束页码	358
卷号	220
英文摘要	The coastal Atacama Desert is exposed to strong earthquakes and giant tsunamis associated with the subduction of the Nazca plate beneath the South American plate. Nevertheless, historical and geological records of tsunamis and paleotsunamis in this region are scarce. Taltal (25.4°S) is located at the southern edge of the hyperarid Atacama Desert within a major historical ∼1000 km-long megathrust seismic gap in northern Chile where the most recent large tsunamigenic earthquakes occurred in 1877 CE and 1922 CE, rupturing its northern and southern segments, respectively. By multiproxy geological and archaeological analyses from pits and trenches, we report distinctive strata of reworked archaeological material as well as sedimentary layers that we interpret as being produced by tsunami run-up and/or backwash deposition. We identified two large Holocene paleotsunamis dated close to ∼4000 cal yrs BP and younger than 863 ± 199 CE (∼1087 cal years BP). By comparing the run-ups of the last historical tsunamis with our minimum run-up estimates from the geo-archaeological record, we conclude that the impact of these Holocene paleotsunamis was larger than any known historical event, suggesting the need to re-evaluate local, regional and Pacific basin-scale tsunami hazard assessments. © 2019 Elsevier Ltd
英文关键词	Coastal; Geo-archaeology; Geomorphology; Holocene; Hyperarid Atacama Desert; Northern Chile seismic gap; Paleotsunamis; South America; Taltal
语种	英语
scopus关键词	Geology; Geomorphology; Landforms; Tsunamis; Atacama Desert; Coastal; Geo archaeologies; Holocenes; Paleotsunamis; Seismic gaps; South America; Taltal; Earthquakes; archaeology; coastal zone; geological record; geomorphology; hazard assessment; Holocene; Nazca plate; subduction; tsunami; Atacama Desert; Chile; Pacific Ocean
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151795
作者单位	Departamento de Geología, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile; Departamento de Antropología, Universidad de Chile, Ignacio Carrera Pinto 1045, Piso 2, Ñuñoa, Santiago, Chile; Pangea Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, 2052, Australia; Aix Marseille Université, CNRS, MCC, LAMPEA UMR 7269, Aix-en-Provence, 13094, France; Carrera de Antropología, Facultad de Ciencias Sociales, Universidad de Concepción, Victor Lamas 1290, Concepción, Chile; Departamento de Ingeniería en Geomensura y Geomática, Facultad de Ingeniería, Universidad de Antofagasta, Avenida Universidad de Antofagasta 02800, Antofagasta, Chile
推荐引用方式 GB/T 7714	León T.,Vargas G.,Salazar D.,et al. Geo-archaeological records of large Holocene tsunamis along the hyperarid coastal Atacama Desert in the major northern Chile seismic gap[J],2019,220.
APA	León T..,Vargas G..,Salazar D..,Goff J..,Guendon J.L..,...&Alvarez G..(2019).Geo-archaeological records of large Holocene tsunamis along the hyperarid coastal Atacama Desert in the major northern Chile seismic gap.Quaternary Science Reviews,220.
MLA	León T.,et al."Geo-archaeological records of large Holocene tsunamis along the hyperarid coastal Atacama Desert in the major northern Chile seismic gap".Quaternary Science Reviews 220(2019).