A high-resolution δ18O record of modern Tridacna gigas bivalve and its paleoenvironmental implications
A high-resolution δ18O record of modern Tridacna gigas bivalve and its paleoenvironmental implications
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现代砗磲双壳类的高分辨率 Delta O-18 记录及其古环境意义
DOI:
10.1016/j.palaeo.2020.109800
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发表时间:
2020-09
期刊:
影响因子:
--
通讯作者:
Haowen Dang
中科院分区:
文献类型:
--
作者:
Xiaolin Ma;Hong Yan;Haobai Fei;Chengcheng Liu;Ge Shi;Enqing Huang;Yue Wang;Xiaoli Qu;Ergang Lian;Haowen Dang
The lack of monthly-resolved paleoenvironmental records beyond the instrumental era hinders our full understanding of global climate dynamics.Tridacna gigasshells have a large potential to quantitatively document the variability of the ocean surface environment on time scales from daily to interannual in the past, while the applicability of the geochemical proxies ofTridacna gigasneeds to be quantitively investigated. Here we establish a chronology for aTridacna gigasshell from the southern South China Sea (SCS) by identifying daily growth laminae using a laser scanning confocal microscope (LSCM). Our high-resolutionTridacna gigasshell δ18Oshellrecord throughout 1989–2013 shows a high correlation with changes in local precipitation and the index of El Niño-Southern Oscillations (ENSO) on the interannual time scale. Together with observed sea surface temperature (SST), we calculated seawater δ18O (δ18Osw) and derived sea surface salinity (SSS) change in the southern SCS based on theTridacna gigasshell δ18O record. Our salinity-budget calculation results suggest that the SSS variability in the southern SCS is predominantly affected by the vertical mixing and sea surface freshwater flux. Our study reveals that theTridacna gigasshell is an ideal archive for high-resolution and quantitative paleoenvironmental reconstructions in tropical ocean regions, thus providing a new window to explore paleoenvironmental changes on annual and interannual time scales.
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影响因子:
--
作者:
A. Legrande;G. Schmidt
通讯作者:
A. Legrande;G. Schmidt
DOI:
10.1669/0883-1351(2003)18
发表时间:
2003-04
期刊:
--
影响因子:
--
作者:
P. Wignall;R. Newton
通讯作者:
P. Wignall;R. Newton
DOI:
10.1016/s0031-0182(04)00358-x
发表时间:
2004-09
期刊:
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子:
--
作者:
Tsuyoshi Watanabe;A. Suzuki;H. Kawahata;H. Kan;S. Ogawa
通讯作者:
Tsuyoshi Watanabe;A. Suzuki;H. Kawahata;H. Kan;S. Ogawa
DOI:
10.1016/j.palaeo.2009.06.007
发表时间:
2009-09-01
影响因子:
3
作者:
Elliot, M.;Welsh, K.;Ayling, B.
通讯作者:
Ayling, B.
影响因子:
3.5
作者:
Duprey, N.;Lazareth, C. E.;Cabioch, G.
通讯作者:
Cabioch, G.