DOI: 10.1016/j.quascirev.2014.04.006
Scopus记录号: 2-s2.0-84899866526
论文题名: Mid- to Late-Holocene Australian-Indonesian summer monsoon variability
作者: Steinke S. ; Mohtadi M. ; Prange M. ; Varma V. ; Pittauerova D. ; Fischer H.W.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 93 起始页码: 142
结束页码: 154
语种: 英语
英文关键词: Australian-Indonesian summer monsoon
; Grand solar minimum
; Holocene
; Orbital forcing
; Solar forcing
Scopus关键词: Atmospheric pressure
; Atmospheric thermodynamics
; Climate models
; Sediments
; Solar energy
; Atmospheric pressure
; Climate models
; Climatology
; Rain
; Sediments
; Solar energy
; Holocenes
; Orbital forcing
; Solar forcing
; Solar minima
; Summer monsoon
; Rain
; Atmospheric thermodynamics
; agricultural practice
; climate modeling
; El Nino-Southern Oscillation
; Holocene
; radiative forcing
; rainfall
; seasonal variation
; sediment analysis
; solar activity
; Australia
; East Nusa Tenggara
; Indonesia
; Lesser Sunda Islands
; Sumba
; Sunda Isles
英文摘要: The Australian-Indonesian monsoon has a governing influence on the agricultural practices and livelihood in the highly populated islands of Indonesia. However, little is known about the factors that have influenced past monsoon activity in southern Indonesia. Here, we present a ~6000 years high-resolution record of Australian-Indonesian summer monsoon (AISM) rainfall variations based on bulk sediment element analysis in a sediment archive retrieved offshore northwest Sumba Island (Indonesia). The record suggests lower riverine detrital supply and hence weaker AISM rainfall between 6000yr BP and ~3000yr BP compared to the Late Holocene. We find a distinct shift in terrigenous sediment supply at around 2800yr BP indicating a reorganization of the AISM from a drier Mid Holocene to a wetter Late Holocene in southern Indonesia. The abrupt increase in rainfall at around 2800yr BP coincides with a grand solar minimum. An increase in southern Indonesian rainfall in response to a solar minimum is consistent with climate model simulations that provide a possible explanation of the underlying mechanism responsible for the monsoonal shift. We conclude that variations in solar activity play a significant role in monsoonal rainfall variability at multi-decadal and longer timescales. The combined effect of orbital and solar forcing explains important details in the temporal evolution of AISM rainfall during the last 6000 years. By contrast, we find neither evidence for volcanic forcing of AISM variability nor for a control by long-term variations in the El Niño-Southern Oscillation (ENSO). •Australian-Indonesian summer monsoon (AISM) rainfall changes over the past ~6000 years.•Abrupt increase in rainfall at ~2800yr BP coincides with a grand solar minimum.•Increased rainfall in response to a solar minimum is consistent with climate model simulations.•Combined effect of orbital and solar forcing on AISM rainfall.•No significant control by long-term variations in ENSO. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60267
Appears in Collections: 过去全球变化的重建
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作者单位: MARUM -Center for Marine Environmental Sciences, Department of Geosciences, University of Bremen, 28359 Bremen, Germany; Bremen State Radioactivity Measurements Laboratory, Institute of Environmental Physics (IUP), University of Bremen, 28359 Bremen, Germany
Recommended Citation:
Steinke S.,Mohtadi M.,Prange M.,et al. Mid- to Late-Holocene Australian-Indonesian summer monsoon variability[J]. Quaternary Science Reviews,2014-01-01,93