DOI: 10.1016/j.gloplacha.2015.12.003
论文题名: The ELSA-Flood-Stack: A reconstruction from the laminated sediments of Eifel maar structures during the last 60 000 years
作者: Brunck H. ; Sirocko F. ; Albert J.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 142 起始页码: 136
结束页码: 146
语种: 英语
英文关键词: Eifel
; Flood events
; Flood frequency
; Holocene
; Late Pleistocene
; Paleoclimate
Scopus关键词: Lakes
; Sediments
; Stratigraphy
; Vegetation
; Eifel
; Flood event
; Flood frequency
; Holocenes
; Late Pleistocene
; Paleoclimates
; Floods
英文摘要: This study reconstructs the main flood phases in central Europe from event layers in sediment cores from Holocene Eifel maar lakes and Pleistocene dry maar structures. These reconstructions are combined with recent gauge time-series to cover the entire precipitation extremes of the last 60 000 years. In general, Eifel maar sediments are perfectly suited for the preservation of event layers since the deep water in the maar lakes is seasonal anoxic and therefore, bioturbation is low. However, the preservation of annual lamination is only preserved in Holzmaar and Ulmener Maar; the other cores are dated by 14C, magnetostratigraphy, tephra markers and ice core tuning. The cores were drilled in the Eifel region of central western Germany, which represents a climatic homogenous region from Belgium to Poland and all across Central Europe. A total of 233 flood layers over 7.5 mm were detected in all analysed cores. The stratigraphic classification of the flood events follows the newly defined Landscape Evolution Zones (LEZ). The strongest events in the Holocene have occurred during LEZ 1 (0–6000 b2k) in the years 658, 2800 and 4100 b2k. Flood layers in the LEZ 2 (6000–10 500 b2k) are not as frequent as during the LEZ 1, nevertheless, the floods cluster between 6000 and 6500 b2k. Twenty flood layers are found in the LEZ 3 (10 500–14 700 b2k); 11 in LEZ 4 (14 700–21 000 b2k); 15 in LEZ 5 (21 000–28 500 b2k); 34 in LEZ 6 (28 500–36 500 b2k); 8 in LEZ 7 (36 500–49 000 b2k); zero in LEZ 8 (49 000–55 000 b2k) and LEZ 9 (55 000–60 000 b2k). The maximum flood phases during the Pleistocene are at 11 500–17 500 (late glacial and Younger Dryas), 23 000–24 000 (before Greenland Interstadial (GI) 2), 29 000–35 000 (especially between GI 5 and 4) and 44 000–44 500 b2k (transition from GI 12 to 11). The variations in flood dynamics are climatically driven and mainly associated with climate transitions and colder periods, combined with light vegetation. It turns out that low vegetation coverage related to both Greenland Stadial phases and anthropogenic impacts since late Holocene is the main cause for the development of flood layers in maar sediments. The precipitation itself, plays only a secondary role. This interpretation is based on the current climate understanding of cold phases and several studies of fluvial erosion related to vegetation coverage. © 2016 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961333708&doi=10.1016%2fj.gloplacha.2015.12.003&partnerID=40&md5=0d578723afe8781c7b7c066f395b3a3b
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11533
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
There are no files associated with this item.
作者单位: Institute for Geosciences, Johannes Gutenberg-University, J.-J. Becherweg 21, Mainz, Germany
Recommended Citation:
Brunck H.,Sirocko F.,Albert J.. The ELSA-Flood-Stack: A reconstruction from the laminated sediments of Eifel maar structures during the last 60 000 years[J]. Global and Planetary Change,2015-01-01,142.