Contributions of wind and river effects on DO concentration in Tokyo Bay
Contributions of wind and river effects on DO concentration in Tokyo Bay
复制标题
风和河流效应对东京湾 DO 浓度的贡献
DOI：
10.1016/j.ecss.2012.05.023
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发表时间：
2012
影响因子：
2.8
通讯作者：
K. Furukawa
中科院分区：
文献类型：
--
作者：
Chizuru Sato;K. Nakayama;K. Furukawa
本文提出了一种评估东京湾底层水中缺氧或缺氧的方法，这是日本典型的封闭海湾。在东京湾，海水与海洋的交换以前被发现主要受河口环流控制。因此，人们预计湾头的溶解氧(DO)浓度主要受河口环流的影响，河口环流会随着风力和河流流量的变化而变化。利用三维生态模型研究了风和河流流量对湾头附近DO浓度的影响。为了评估低氧或缺氧水的发生，我们建立了一个概念性的DO模型，并通过与三维生态模型的结果进行了验证。我们认为，概念性DO模型有很好的潜力来评估导致湾头周围低氧或缺氧水的因素。模拟结果表明，平均而言，风的影响是底层DO浓度变化的主导因素。然而，我们发现，在S−1中，洪水和大风超过10米等极端事件的贡献率为50%或更高。这表明极端事件在控制东京湾底层DO浓度变化中起着重要作用。
This paper proposes a method of evaluating the occurrence of hypoxia or anoxia in bottom water of Tokyo Bay, which is typical of enclosed bays in Japan. In Tokyo Bay, the exchange of seawater with the ocean has previously been found to be dominantly controlled by estuarine circulation. Thus, one would expect the concentrations of dissolved oxygen (DO) in the bay head to be influenced mainly by estuarine circulation, which changes according to wind strength and river discharges. We investigated the effects of wind and river discharge on DO concentration around the bay head using a three-dimensional ecological model. To evaluate the occurrence of hypoxic or anoxic water, we developed a conceptual DO model, which was verified through the good agreement with the results from a three-dimensional ecological model. We conclude that the conceptual DO model has good potential for evaluating the factors leading to hypoxic or anoxic water around the bay head. Modeling suggested that, on average, wind effects were the dominant factor in the variation of bottom DO concentrations. However, we found that the contribution of extreme events, such as floods and strong winds exceeding 10 m s−1, was 50% or more. This suggests that extreme events play an important role in controlling the variation in DO concentration at the bottom of Tokyo Bay.
海水侵入伊势湾的深度每两周变化一次
DOI：
--
发表时间：
2004
期刊：
J.Oceanogr. 61
影响因子：
--
作者：
Yasuhiko Morimoto;Maomi Ueno;Nobuyoshi Yonezawa;Setsuo Yokoyama;Youzou Miyadera;伊藤一;Maomi Ueno;Y.Watanuki;伊藤一;Maomi Ueno;藤井理行(編);I.I.Perry;Maomi Ueno;Yoshiyuki Fujii (Ed.);K.Yamada;Toshio Okamoto;藤井理行(編);A.Kasai
通讯作者：
A.Kasai