Bottom water temperature measurements in the South China Sea, eastern Indian Ocean and western Pacific Ocean

被引：9

作者：

YANG Xiaoqiu ^{[1
]}

SHI Xiaobin ^{[1
]}

ZHAO Junfeng ^{[1
]}

YU Chuanhai ^{[1
,2
]}

GAO Hongfang ^{[3
]}

CHEN Aihua ^{[3
]}

LU Yuanzheng ^{[4
]}

CEN Xianrong ^{[4
]}

LIN Weiren ^{[5
]}

ZENG Xin ^{[1
]}

XU Hehua ^{[1
]}

REN Ziqiang ^{[1
,2
]}

ZHOU Shengqi ^{[4
]}

XU Ziying ^{[3
]}

SUN Jinlong ^{[1
]}

KAMIYA Nana ^{[5
]}

LIN Jian ^{[1
]}

机构：

[1] CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology

[2] University of Chinese Academy of Sciences

[3] Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources,Guangzhou Marine Geological Survey

[4] State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences

[5] Graduate School of Engineering, Kyoto

来源：

热带海洋学报 | 2018年 / 37卷 / 05期

关键词：

海底底水温度(BWT); 南海(SCS); 东印度洋(EIO); 西太平洋(WPO); 大洋传送带模式;

D O I：

暂无

中图分类号：

P714.1 [];

学科分类号：

摘要：

文章报道了一批新的海底底水温度（BWT）数据,其中南海（SCS）158个站位、东印度洋（EIO）30个站位及西太平洋（WPO）37个站位。基于这批新的BWT数据,获得南海和西太平洋海域底水温度与水深经验关系,可为地球物理和物理海洋提供准确、可靠的海底温度边界。这将有助于海底油气资源调查与评估。同时,这批实测数据表明:1)水深超过3500m的海域,其底水温度在南海约为2.47℃,比东印度洋（～1.34℃）和西太平洋（～1.60℃）稍微偏高。这与大洋传送带模式所预测的情况比较吻合。该模式认为:低温高盐的海水,从北大西洋格陵兰岛和冰岛附近海域下沉到深层,然后向南流动,再与南极洲周围海域的低温高盐海水一同向北进入印度洋和太平洋。而南海是一个相对比较封闭的热带边缘海,其内部海水与印度洋和菲律宾海交换有限,导致海水温度整体高于印度洋和太平洋。2)台西南盆地水深在2700～3000m的部分站位,其底水温高达约3.00℃,明显高于其周边同水深海域底水温度（平均值约为2.33℃）。这可能是台西南盆地海底水热活动导致的结果。3)在东印度洋和西太平洋水深超过4800m海域,底水温度随着水压增大稍有升高,其升高率分别为10.6mK·MPa-1和12.0mK·MPa-1。这与理论估算的深层底水绝热压力温度梯度范围较为吻合。这也意味着东印度洋和西太平洋深层底水,主要由绝热自压作用导致其温度随着深度的增大而升高。

引用

页码：86 / 97

页数：12

共 27 条

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