Is the upward release of intermediate ocean heat content a possible engine for low-latitude processes?
文献类型：期刊论文
| 作者 | Yang, Yiping2; Xiang, Rong2; Zhang, Lanlan2; Zhong, Fuchang2,3; Zhang, Miming1 |
| 刊名 | GEOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 48期号:6页码:579 |
| ISSN号 | 1943-2682 |
| DOI | 10.1130/G47271.1 |
| 英文摘要 | Ocean heat content (OHC) plays an important role in controlling changes in Earth's climate. However, relatively little research has been conducted into changes in OHC over a millennial scale, or into the mechanisms that control OHC migration in the ocean's interior. This paucity of research is largely due to the lack of subsurface proxy records. Here, we analyzed planktonic Mg/Ca and delta O-18 records from species with different calcification depths to reconstruct the thermal structure of the water column and upper OHC changes since 21 kyr B.P. in the South China Sea. The results revealed that temperatures at intermediate and lower thermocline depths were warm during the last the deglaciation and became cool during the Holocene. The water cooling at similar to 700 m began at 143 kyr B.P., but was delayed until 12.9 kyr B.P. at similar to 325 m, and until 9.2 kyr B.P. at similar to 250 m. In addition, upper thermocline temperatures at similar to 100 m also started to decline at ca. 73 kyr B.P. Simultaneously, intermediate and thermocline OHC values were high during the last deglaciation, but surface OHC was low. We infer, therefore, that more heat was stored at intermediate depths during the last deglaciation, and that the upward release of the intermediate OHC resulted in the sequential delays in the cooling of intermediate to upper thermocline water. By combining these results with tropical Pacific records, we also hypothesize that the release of deeper OHC was perhaps the heat source for low-latitude processes during the Holocene. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18543]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Peoples R China 3.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Peoples R China 4.Minist Nat Resources MNR, Inst Oceanog TIO 3, Key Lab Global Change & Marine Atmospher Chem GCM, Xiamen 361005, Fujian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Yiping,Xiang, Rong,Zhang, Lanlan,et al. Is the upward release of intermediate ocean heat content a possible engine for low-latitude processes?[J]. GEOLOGY,2020,48(6):579, 583. |
| APA | Yang, Yiping,Xiang, Rong,Zhang, Lanlan,Zhong, Fuchang,&Zhang, Miming.(2020).Is the upward release of intermediate ocean heat content a possible engine for low-latitude processes?.GEOLOGY,48(6),579. |
| MLA | Yang, Yiping,et al."Is the upward release of intermediate ocean heat content a possible engine for low-latitude processes?".GEOLOGY 48.6(2020):579. |
入库方式： OAI收割
来源：南海海洋研究所
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