DOI: 10.5194/cp-13-491-2017
Scopus记录号: 2-s2.0-85019629721
论文题名: Decadal resolution record of Oman upwelling indicates solar forcing of the Indian summer monsoon (9-6 ka)
作者: Munz P.M. ; Steinke S. ; Böll A. ; Lückge A. ; Groeneveld J. ; Kucera M. ; Schulz H.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2017
卷: 13, 期: 5 起始页码: 491
结束页码: 509
语种: 英语
英文摘要: The Indian summer monsoon (ISM) is an important conveyor in the ocean-atmosphere coupled system on a trans-regional scale. Here we present a study of a sediment core from the northern Oman margin, revealing early to mid-Holocene ISM conditions on a near-20-year resolution. We assess multiple independent proxies indicative of sea surface temperatures (SSTs) during the upwelling season together with bottom-water conditions. We use geochemical parameters, transfer functions of planktic foraminiferal assemblages and Mg / Ca palaeothermometry, and find evidence corroborating previous studies showing that upwelling intensity varies significantly in coherence with solar sunspot cycles. The dominant ∼80-90-year Gleissberg cycle apparently also affected bottom-water oxygen conditions. Although the interval from 8.4 to 5.8 ka BP is relatively short, the gradually decreasing trend in summer monsoon conditions was interrupted by short events of intensified ISM conditions. Results from both independent SST proxies are linked to phases of weaker oxygen minimum zone (OMZ) conditions and enhanced carbonate preservation. This indicates that atmospheric forcing was intimately linked to bottom-water properties and state of the OMZ on decadal timescales. © Author(s) 2017. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48921
Appears in Collections: 气候变化与战略
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Recommended Citation:
Munz P.M.,Steinke S.,Böll A.,et al. Decadal resolution record of Oman upwelling indicates solar forcing of the Indian summer monsoon (9-6 ka)[J]. Climate of the Past,2017-01-01,13(5)