DOI: 10.1016/j.quascirev.2018.05.035
Scopus记录号: 2-s2.0-85047868320
论文题名: Precession-paced thermocline water temperature changes in response to upwelling conditions off southern Sumatra over the past 300,000 years
作者: Wang X. ; Jian Z. ; Lückge A. ; Wang Y. ; Dang H. ; Mohtadi M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 192 起始页码: 123
结束页码: 134
语种: 英语
英文关键词: Precession cycle
; Sea surface temperature
; Sumatra
; Thermocline water temperature
; Upwelling intensity
Scopus关键词: Atmospheric temperature
; Organic carbon
; Sea level
; Stream flow
; Submarine geophysics
; Surface properties
; Surface waters
; Precession cycle
; Sea surface temperature (SST)
; Sumatra
; Upwelling intensity
; Water temperatures
; Glacial geology
; air-sea interaction
; boundary condition
; glacial-interglacial cycle
; paleotemperature
; precession
; sea level change
; sea surface temperature
; sediment core
; thermocline
; total organic carbon
; upwelling
; water technology
; water temperature
; Australia
; Greater Sunda Islands
; Indonesia
; Sumatra
; Sunda Isles
英文摘要: Modern variations of sea surface temperature (SST) and thermocline water temperature (TWT) off southern Sumatra are responding to local upwelling conditions which are controlled by the Australian-Indonesian winter monsoon. The relationships between SST, TWT and upwelling during the past glacial-interglacial cycles are less clearly understood. In this study, SST and TWT variabilities over the past 300 kyr are reconstructed by using foraminiferal Mg/Ca-paleothermometry in sediment core SO139-74 KL off southern Sumatra (6°32.6′S, 103°50′E; 1690 m water depth). Whereas SST shows a clear glacial-interglacial cycle, TWT displays a predominant cycle at the precession band. Generally, the TWT record varies with total organic carbon content, revealing that similar to today, TWT and upwelling intensity off southern Sumatra vary in concert during the past 300 kyr. The lack of glacial-interglacial variability in the TWT suggests a limited role of glacial boundary conditions, such as changing sea level and ice volume, on the upwelling intensity in this region. The vertical gradients of upper water δ18O and temperature at this site also reveal precessional cyclicity. Our model simulation of air-sea interaction further supports the low TWTs during periods of enhanced upwelling and precession minimum. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112135
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Marine Geology, Tongji University, Shanghai, 200092, China; Federal Institute for Geosciences and Natural Resources, Hannover, 30655, Germany; MARUM-Center for Marine Environmental Sciences, University of Bremen, Bremen, 28359, Germany
Recommended Citation:
Wang X.,Jian Z.,Lückge A.,et al. Precession-paced thermocline water temperature changes in response to upwelling conditions off southern Sumatra over the past 300,000 years[J]. Quaternary Science Reviews,2018-01-01,192