DOI: 10.1016/j.palaeo.2016.09.010
论文题名: Changes in Timor Strait hydrology and thermocline structure during the past 130 ka
作者: Lo Giudice Cappelli E. ; Holbourn A. ; Kuhnt W. ; Regenberg M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 462 起始页码: 112
结束页码: 124
语种: 英语
英文关键词: Hoeglundina elegans Mg/Ca
; Indonesian Throughflow
; Lower thermocline
; Timor Sea
; X-ray fluorescence core scanning
英文摘要: Paleostudies of the Indonesian Throughflow (ITF) are largely based on temperature and salinity reconstructions of its near surface component, whereas the variability of its lower thermocline flow has rarely been investigated. We present a multi-proxy record of planktonic and benthic foraminiferal δ18O, Mg/Ca-derived surface and lower thermocline temperatures, X-ray fluorescence (XRF)-derived runoff and sediment winnowing for the past 130 ka in marine sediment core SO18471. Core SO18471, retrieved from a water depth of 485 m at the southern edge of the Timor Strait close to the Sahul Shelf, sits in a strategic position to reconstruct variations in both the ITF surface and lower thermocline flow as well as to investigate hydrological changes related to monsoon variability and shelf dynamics over time. Sediment winnowing demonstrates that the ITF thermocline flow intensified during MIS 5d-a and MIS 1. In contrast during MIS 5e, winnowing was reduced and terrigenous input increased suggesting intensification of the local wet monsoon and a weaker ITF. Lower thermocline warming during globally cold periods (MIS 4 – MIS 2) appears to be related to a weaker and contracted thermocline ITF and advection of warm and salty Indian Ocean waters. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68204
Appears in Collections: 过去全球变化的重建
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作者单位: Institute of Geosciences, Christian-Albrechts-Universität zu Kiel, Ludewig-Meyn-Str. 14, Kiel, Germany; School of Geography and Geology, University of St Andrews, St Andrews, Fife, Scotland, United Kingdom
Recommended Citation:
Lo Giudice Cappelli E.,Holbourn A.,Kuhnt W.,et al. Changes in Timor Strait hydrology and thermocline structure during the past 130 ka[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,462