DOI: 10.1016/j.quascirev.2014.03.020
Scopus记录号: 2-s2.0-84899150111
论文题名: Annually-resolved lake record of extreme hydro-meteorological events since AD 1347 in NE Iberian Peninsula
作者: Corella J.P. ; Benito G. ; Rodriguez-Lloveras X. ; Brauer A. ; Valero-Garcés B.L.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 93 起始页码: 77
结束页码: 90
语种: 英语
英文关键词: Climate change
; Extreme rainfall
; Lacustrine varves
; Microfacies
; Palaeofloods
; Solar activity
Scopus关键词: Climate change
; Flood control
; Lakes
; Sediments
; Solar energy
; Solar radiation
; Climate change
; Flood control
; Lakes
; Solar energy
; Solar radiation
; Extreme rainfall
; Lacustrine varves
; Micro-facies
; Palaeofloods
; Solar activity
; Rain
; Rain
; annual variation
; climate variation
; hydrometeorology
; microfacies
; paleoclimate
; paleoflood
; precipitation (climatology)
; solar activity
; atmospheric circulation
; clastic rock
; depositional environment
; extreme event
; frequency-magnitude distribution
; precipitation intensity
; record
; Iberian Peninsula
英文摘要: We present an annual reconstruction of extreme rainfall events interpreted from detrital layers and turbidites interbedded within a varved sediment record since the 14th century in Montcortés Lake (NE Spain, 1027ma.s.l.). Clastic microfacies intercalated within the biochemical calcite varves were characterized and their depositional dynamics interpreted using high-resolution geochemical and sedimentological analyses. Annual number of detrital layers was compared against instrumental records of extreme daily rainfalls providing minimum rainfall thresholds and return periods associated to the identified types of clastic microfacies. Non-continuous detrital layers were deposited during rainfall events higher than 80mm (>2-year return period) while graded detrital layers and turbidites were associated with higher magnitude rainfall events (>90mm and >4-year return period). The frequency distribution of extreme hydro-meteorological events is not stationary and its pattern coincides with historical floods from the nearby Segre River. High frequency of heavy rainfalls occurred during the periods AD 1347-1400 and AD 1844-1894. A lower frequency of heavy rainfall was found during the periods AD 1441-1508, 1547-1592, 1656-1712, 1765-1822 and 1917-2012. The 20th century stands out as the longest interval within the studied period of very low number of extreme rainfall events. Variability in extreme rainfall events prior to the 20th century is in phase with solar activity, suggesting a mechanistic link in mid-latitude atmospheric circulation patterns that ceased during the 20th century. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60272
Appears in Collections: 过去全球变化的重建
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作者单位: Museo Nacional de Ciencias Naturales (MNCN-CSIC), Serrano 115bis, 28006 Madrid, Spain; Deutsches GeoForschungsZentrum Potsdam, Sektion 5.2 Klimadynamik und Landschaftsentwicklung, D-14473 Potsdam, Germany; Instituto Pirenaico de Ecología (IPE-CSIC), Avda Montañana 1005, 50059 Zaragoza, Spain
Recommended Citation:
Corella J.P.,Benito G.,Rodriguez-Lloveras X.,et al. Annually-resolved lake record of extreme hydro-meteorological events since AD 1347 in NE Iberian Peninsula[J]. Quaternary Science Reviews,2014-01-01,93