气候变化领域集成服务门户(CCPortal): Lakes as paleoseismic records in a seismically-active; low-relief area (Rieti Basin; central Italy)

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DOI	10.1016/j.quascirev.2019.03.004
	Lakes as paleoseismic records in a seismically-active; low-relief area (Rieti Basin; central Italy)
	Archer C.; Noble P.; Rosen M.R.; Sagnotti L.; Florindo F.; Mensing S.; Piovesan G.; Michetti A.M.
发表日期	2019
ISSN	0277-3791
起始页码	186
结束页码	207
卷号	211
英文摘要	Small lakes in low relief areas are atypical candidates for studies on paleoseismicity, but their sediments can contain seismically induced event layers (seismites) generated through strong ground shaking, sediment transport, hydrological reorganization and/or changes in groundwater chemistry and flow. Lakes Lungo and Ripasottile are shallow lakes (<10 m deep) located in the tectonically active Rieti Basin in the central Apennines, Italy, where strong normal faulting earthquakes (Mw 6.5 to 7.0) regularly occur. Sediment cores from these lakes provide paleoseismic indicators for the past ∼1000 years. Sedimentological and geochemical analysis reveals four event layers identified in both lakes that correspond with documented large-scale earthquakes in 1298, 1349, 1639, and 1703 AD. Chronological correlation between earthquakes and paleoseismic features is reliable because of the resolution of sediment dating available for the studied cores. The common physical structure is a physically homogenous bed (homogenite) of re-suspended sediment consisting of a denser, high magnetic susceptibility (κ) clastic base, with organic matter concentrated above. Co-seismic to post-seismic chemical signatures are associated with some event layers and may represent abrupt or transient shifts to a groundwater-dominated system, or permanent changes in groundwater flow and/or spring discharge. Excursions in δ 13 C org may represent disruptions or changes in carbon source. Not all event layers show the same features, a result attributed to differences in seismic processes as well as the lake attributes, and anthropogenic modification. The observations made here may provide a new means of detecting paleoseismicity and may be applied to other low relief lakes in seismically active areas. © 2019 Elsevier Ltd
英文关键词	Central Italy; Limnology; Paleolimnology; Paleomagnetism; Paleoseismicity; Scanning XRF; Stable isotopes
语种	英语
scopus关键词	Analytical geochemistry; Earthquakes; Faulting; Geomagnetism; Groundwater; Groundwater flow; Hydrochemistry; Induced Seismicity; Limnology; Magnetic susceptibility; Paleolimnology; Sediment transport; Sedimentation; Suspended sediments; Anthropogenic modification; Central Italy; Groundwater chemistry; Large-scale earthquakes; Paleomagnetism; Paleoseismic features; Paleoseismicity; Stable isotopes; Lakes; carbon isotope; discharge; faulting; groundwater flow; lacustrine environment; magnetic susceptibility; paleolimnology; paleomagnetism; paleoseismicity; shallow water; spring (hydrology); X-ray fluorescence; Apennines; Italy; Lazio; Rieti
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/151961
作者单位	University of Nevada, Reno, United States; United States Geological Survey, Carson City, NV, United States; Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy; Tuscia University, Department of Agriculture and Forest Sciences, Viterbo, Italy; Università Degli Studi Dell'Insubria, Dipartimento di Scienza e Alta Tecnologia, Como, Italy
推荐引用方式 GB/T 7714	Archer C.,Noble P.,Rosen M.R.,et al. Lakes as paleoseismic records in a seismically-active; low-relief area (Rieti Basin; central Italy)[J],2019,211.
APA	Archer C..,Noble P..,Rosen M.R..,Sagnotti L..,Florindo F..,...&Michetti A.M..(2019).Lakes as paleoseismic records in a seismically-active; low-relief area (Rieti Basin; central Italy).Quaternary Science Reviews,211.
MLA	Archer C.,et al."Lakes as paleoseismic records in a seismically-active; low-relief area (Rieti Basin; central Italy)".Quaternary Science Reviews 211(2019).