气候变化领域集成服务门户(CCPortal): Changes in high-intensity precipitation on the northern Apennines (Italy) as revealed by multidisciplinary data over the last 9000 years

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DOI	10.5194/cp-16-1547-2020
	Changes in high-intensity precipitation on the northern Apennines (Italy) as revealed by multidisciplinary data over the last 9000 years
	Segadelli S.; Grazzini F.; Rossi V.; Aguzzi M.; Marvelli S.; Marchesini M.; Chelli A.; Francese R.; Teresa De Nardo M.; Nanni S.
发表日期	2020
ISSN	18149324
起始页码	1547
结束页码	1564
卷号	16 期号:4
英文摘要	Several record-breaking precipitation events have struck the mountainous area of the Emilia-Romagna region (northern Apennines, Italy) over the last 10 years. As a consequence, severe geomorphological processes such as debris avalanches and debris flows, shallow landslides, and overbank flooding have affected the territory, causing severe damage to human-made structures. The unusual intensity of these phenomena prompted an investigation into their frequency in the past, beyond instrumental time. In the quest for an understanding of whether these phenomena are unprecedented in the region, peat bog and lake deposits were analyzed to infer the frequency of extreme precipitation events that may have occurred in the past. We present the results of a dedicated field campaign performed in summer 2017 at Lake Moo in the northern Apennines, a 0.15 km2peat bog located at an altitude of 1130ma.s.l. During the extreme precipitation event of 13-14 September 2015, several debris flows generated by small streams affected the Lake Moo plain. In such a small drainage basin (<2 km2), high-density floods can be triggered only by high-intensity precipitation events. The sedimentary succession (ca. 13m thick) was studied through the drilling of two cores and one trench. The sequence, characterized by clusters of coarse-grained alluvial deposits interbedded with organic-rich silty clays and peat layers, was analyzed by combining sedimentological, pollen, microanthracological and pedological data with radiocarbon dating (AMS 14C) in an innovative multidisciplinary approach for this area. Original data acquired during the field campaign were also correlated with other specific paleoclimatic proxies available in the literature for the northern Apennines area. We discover that the increase in extreme paleoflooding, associated with coarse-grained deposits similar to the ones observed recently, correlates well with the warm phases of the Holocene Thermal Maximum and with the ongoing warming trend observed that started at the beginning of the last century. © 2020 American Society of Civil Engineers (ASCE). All rights reserved.
语种	英语
scopus关键词	anthropogenic effect; data set; drainage basin; extreme event; flood; Hypsithermal; paleoclimate; paleoenvironment; precipitation intensity; radiocarbon dating; spatiotemporal analysis; Apennines; Emilia-Romagna; Italy; Emilia
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146681
作者单位	Department of Geological, Seismic and Soil Service Emilia-Romagna Region Administration, Bologna, Italy; Regional Agency for Prevention Environment and Energy of Emilia-Romagna, Hydro-Meteo-Climate Service, Bologna, Italy; Department of Biological Geological, and Environmental Sciences, BiGeA, Alma Mater Studiorum University of Bologna, Bologna, Italy; Laboratory of Palynology and Archaeobotany, C.A.A. Giorgio Nicoli San Giovanni in Persiceto, Bologna, Italy; Department of Chemistry Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy; Ludwig-Maximilians-Universität, Meteorologisches Institut, Munich, Germany
推荐引用方式 GB/T 7714	Segadelli S.,Grazzini F.,Rossi V.,et al. Changes in high-intensity precipitation on the northern Apennines (Italy) as revealed by multidisciplinary data over the last 9000 years[J],2020,16(4).
APA	Segadelli S..,Grazzini F..,Rossi V..,Aguzzi M..,Marvelli S..,...&Nanni S..(2020).Changes in high-intensity precipitation on the northern Apennines (Italy) as revealed by multidisciplinary data over the last 9000 years.Climate of the Past,16(4).
MLA	Segadelli S.,et al."Changes in high-intensity precipitation on the northern Apennines (Italy) as revealed by multidisciplinary data over the last 9000 years".Climate of the Past 16.4(2020).