Hypoxia in the East China Sea: One of the largest coastal low-oxygen areas in the world
Hypoxia in the East China Sea: One of the largest coastal low-oxygen areas in the world
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DOI：
10.1016/j.marenvres.2007.01.007
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发表时间：
2007-10-01
影响因子：
3.3
通讯作者：
Shiah, Fuh-Kwo
中科院分区：
文献类型：
--
作者：
Chen, Chung-Chi;Gong, Gwo-Ching;Shiah, Fuh-Kwo
在过去的几十年中，河口和沿海地区的缺氧和缺氧现象已被广泛观察到，但很少有报道集中在东海（ECS）。2003年6月和8月，两次巡航在几乎覆盖整个东加勒比海大陆架的台站取样，以检查缺氧事件及其潜在原因。8月，DO浓度< 2-3 mg l（-1）的区域估计超过12，000 km（2）（或432 km（3）体积）。相反，水柱溶解氧浓度超过4毫克升（-1），在整个大陆架区域的大部分。一个尖锐的密度梯度下观察到的混合层在8月，限制垂直再曝气在这个强大的密度跃层。氧消耗事件，如这里所描述的东加勒比海大陆架，是由新产生的海洋和河流生物源物质（以及旧的残留有机物）沉积到底部沃茨的分解。(c)2007爱思唯尔有限公司保留所有权利。
Anoxia and hypoxia have been widely observed in estuarine and coastal regions over the past few decades; however, few reports have focused on the East: China Sea (ECS). In June and August 2003, two cruises sampled at stations covering almost the entire shelf of the ECS to examine hypoxic events and their potential causes. In August, DO concentrations < 2-3 mg l(-1) covered an area estimated at greater than 12,000 km(2) (or 432 km(3) volume). In contrast, water column DO concentrations exceeded 4 mg l(-1) throughout most of the shelf region. A sharp density gradient was observed under the mixed layer in August, restricting vertical re-aeration across this strong pycnocline. Oxygen depletion events, such as that described here for the ECS shelf, are fueled by decomposition of newly produced marine and river-borne biogenic substances (as well as older residual organic matter) deposited to the bottom waters. (c) 2007 Elsevier Ltd. All rights reserved.