Impact of Isahaya dike construction on DO concentration in the Ariake Sea
Impact of Isahaya dike construction on DO concentration in the Ariake Sea
复制标题
谏早堤坝建设对有明海溶解氧浓度的影响
DOI：
10.1007/s10872-017-0454-9
复制
发表时间：
2018
影响因子：
2.3
通讯作者：
Y. Hayami
中科院分区：
文献类型：
--
作者：
Soichi Yamaguchi;Y. Hayami
在有明海，1997年在伊沙亚湾为填海和防灾而建造的堤坝被认为对海洋生态系统造成了巨大的人为影响。目前，伊沙亚湾和有明内海每年夏天都会发生缺氧或缺氧。然而，堤防建设对溶解氧浓度的影响尚不清楚。本研究应用数值生态系统模型评估了堤防建设对溶解氧浓度的影响。计算结果表明，在小潮-大潮周期的稳定状态下，堤防建设对夏季溶解氧浓度的影响范围比以往报道的要大。在伊沙亚湾，堤坝建设导致DO浓度下降大于2.0 mg l−1，这是由于垂直扩散过程中的DO供应减少，潮流减少，密度分层加剧。堤防的建设也影响了内有明海的溶解氧浓度，通过降低溶解氧浓度的河口环流和减少扩散供应的氧气垂直与分层的堤防建设增强。本研究首次通过数值模拟表明，围堤的修建会对有明海大范围的溶解氧浓度产生影响。
In the Ariake Sea, dike construction in Isahaya Bay in 1997 for reclamation and disaster prevention was thought to cause big anthropogenic impacts on the marine ecosystem. Currently, hypoxia or anoxia occurs every summer in Isahaya Bay and the inner Ariake Sea. However, the effects of the dike construction on the DO concentration are unclarified. The present study evaluated the impact of the dike construction on the DO concentration by applying a numerical ecosystem model. The present calculation showed that the dike construction could affect the DO concentration in summer in a wider area than reported before in the steady state with a neap-spring tidal cycle. In Isahaya Bay, the dike construction caused a decrease of DO concentration greater than 2.0 mg l−1 , due to the decrease in DO supply from the vertical diffusion process with reduction of tidal current and the intensification of the density stratification. The dike construction also affected the DO concentration in the inner Ariake Sea by decreasing the DO concentration of the water transported by the estuarine circulation and the reduction of the diffusive supply of oxygen vertically with stratification enhanced by the dike construction. For the first time, this study showed with numerical simulation that the dike construction could affect the DO concentration in a wide area of the Ariake Sea.
影响因子：
2.3
作者：
Miyazawa, Yasumasa;Zhang, Ruochao;Komatsu, Kosei
通讯作者：
Komatsu, Kosei
影响因子：
2.7
作者：
A. Manda;K. Matsuoka
通讯作者：
A. Manda;K. Matsuoka
基于外海潮汐的有明海M2潮汐放大变化及谏早海堤的影响
DOI：
--
发表时间：
2008
期刊：
Oceanography in Japan 17(in press)
影响因子：
--
作者：
A.;Tai;S.;Yano
通讯作者：
Yano