High‐resolution Sr/Ca ratios in a Porites lutea coral from Lakshadweep Archipelago, southeast Arabian Sea: An example from a region experiencing steady rise in the reef temperature
High‐resolution Sr/Ca ratios in a Porites lutea coral from Lakshadweep Archipelago, southeast Arabian Sea: An example from a region experiencing steady rise in the reef temperature
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阿拉伯海东南部拉克沙威群岛黄滨珊瑚的高分辨率 Sr/Ca 比率:来自珊瑚礁温度稳步上升的地区的示例
DOI:
10.1002/2015jc010821
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发表时间:
2016
影响因子:
--
通讯作者:
Garbe-Schönberg
中科院分区:
文献类型:
--
作者:
Hetzinger;Pfeiffer;W.-Chr;Garbe-Schönberg
Here we present the first record of Sr/Ca variability in a massivePorites luteacoral from the Lakshadweep Archipelago, Arabian Sea. The annual mean sea surface temperature (SST) in this region and the surrounding areas has increased steadily in the recent past. During some major El Niño events, SSTs are even higher, imposing additional thermal‐stress on corals, episodically leading to coral bleaching. We infer from the coral‐Sr/Ca record (1981–2008) that during some of these events high and persistent SSTs lead to a dampening of the temperature signal in coral‐Sr/Ca, impairing the coral's ability to record full scale warming. Thus, coral‐Sr/Ca may provide a history of past El Niño Southern‐Oscillation (ENSO) induced thermal‐stress episodes, which are a recurrent feature also seen in cross‐spectral analysis between coral‐Sr/Ca and the Nino3.4 index. Despite the impact of episodical thermal‐stress during major El Niño events, our coral proxy faithfully records the seasonal monsoon‐induced summer cooling on the order of ∼2.3°C. Calibration of coral‐Sr/Ca with instrumental grid‐SST data shows significant correlation to regional SST and monsoon variability. Hence, massivePoritescorals of this region are highly valuable archives for reconstructing long‐term changes in SST, strongly influenced by monsoon variability on seasonal scales. More importantly, our data show that this site with increasing SST is an ideal location for testing the future effects of the projected anthropogenic SST increase on coral reefs that are already under thermal‐stress worldwide.
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DOI:
10.1016/j.palaeo.2011.05.005
发表时间:
2011-07-01
影响因子:
3
作者:
DeLong, Kristine L.;Flannery, Jennifer A.;Quinn, Terrence M.
通讯作者:
Quinn, Terrence M.
DOI:
--
发表时间:
1999-04
期刊:
AMBIO: A Journal of the Human Environment
影响因子:
--
作者:
C. Wilkinson;O. Lindén;H. Cesar;G. Hodgson;J. Rubens;A. Strong
通讯作者:
C. Wilkinson;O. Lindén;H. Cesar;G. Hodgson;J. Rubens;A. Strong
影响因子:
64.8
作者:
D. Kinsman
通讯作者:
D. Kinsman
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
S. Chakraborty;R. Ramesh
通讯作者:
R. Ramesh
影响因子:
5
作者:
M. McCulloch;M. Gagan;G. Mortimer;A. Chivas;P. Isdale
通讯作者:
M. McCulloch;M. Gagan;G. Mortimer;A. Chivas;P. Isdale