A high resolution record of sea surface temperature in southern Okinawa Trough for the past 15,000 years

A high resolution record of sea surface temperature in southern Okinawa Trough for the past 15,000 years
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过去15,000年来冲绳海槽南部海面温度的高分辨率记录

DOI:
10.1016/j.palaeo.2015.03.007
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发表时间:
2015-05
影响因子:
3
通讯作者:
Zhang X. Y.
Zhang X. Y.
中科院分区:
地球科学2区
文献类型:
--
作者:
Ruan J. P;Xu Yunping;Ding S.;Wang Y. H.;Zhang X. Y.

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海洋钻探计划(ODP) 1202B岩心中长链烯烃的研究揭示了冲绳海槽南部近1.5万年海表温度(SST)的亚百年分辨率记录。从消冰期到全新世,海温在21.1 ~ 26.5°C之间变化。Bølling (15.0 ~ 14.2 kyr BP)和allerr ød (13.7 ~ 13.4 kyr BP)增温期、老仙女木期(14.2 ~ 13.7 kyr BP)和新仙女木期(12.8 ~ 11.6 kyr BP)冷期的存在反映了末次冰期冲绳海槽与北大西洋地区气候的紧密远相关。南赤道海温在快速上升并在~ 7.4 kyr BP达到最大值后,逐渐下降,与北半球夏季太阳日晒的减少相对应。然而,在8.6 ~ 8.1、5.8 ~ 4.8、4.1 ~ 3.9、3.0 ~ 2.5、1.6 ~ 1.3和0.6 ~ 0.5 kyr BP范围内,海温出现了一系列的骤减,不能单独用太阳日照变化来解释,而是由复杂的太阳-海洋-大气耦合作用介导的。
The study of long-chain alkenones in the Ocean Drilling Program (ODP) core 1202B reveals a sub-centennial resolution record of sea surface temperature (SST) in the southern Okinawa Trough for the past 15 thousand years (kyr). From the Deglaciation to Holocene, SST varied from 21.1 to 26.5 °C. The presence of Bølling (15.0–14.2 kyr BP) and Allerød (13.7–13.4 kyr BP) warming phases, Older Dryas (14.2–13.7 kyr BP) and Younger Dryas (12.8–11.6 kyr BP) cold periods reflects a tight teleconnection of climate between the Okinawa Trough and the North Atlantic region in the last Deglaciation. After rapidly increased and reached the maximum at ~ 7.4 kyr BP, SST in the southern OT gradually decreased, corresponding with the lowering of northern hemisphere summer solar insolation. However, a series of abrupt SST drops were identified atca.8.6–8.1, 5.8–4.8, 4.1–3.9, 3.0–2.5, 1.6–1.3 and 0.6–0.5 kyr BP, which cannot be explained by solar insolation changes alone, and instead are mediated by a complex sun–ocean–atmosphere coupling.
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