Observation of the Sea Surface in Southwest East China Sea by Sensor Network

东海西南海面传感器网络观测

• 批准号: 17360240
• 负责人: KOJIMA Shoichiro
• 金额: $ 11.03万
• 依托单位: National Institute of Information and Communications Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360240/
• 关键词: Remote Sensing; Sensor Network; Ocean Radar; GPS Buoy; Microstructure Profiler; Sea Surface Currents Measurement; Kuroshio; Ocean Wave Measurement; 漂流ブイ; 広域波浪計測; 海水交換

Kuroshio, where flows in southwest East China Sea, and other nearby currents are continuously observed by 9.25MHz Ocean Radar. By this observation, it is clarified that Kuroshio has two current patterns, and the eddy structure between the Kuroshio and Yaeyama Islands appeals to be caused by the clockwise and counterclockwise eddies caused by Yonaguni Island. The spatial scale of these eddies is between 30 and 100 km, and the traveling speed of these eddies is between 15 and 30 km/day. In addition, it is clarified that the abnormal sea level at Ishigaki and Yonaguni Islands depends on the variation of Kuroshio by comparing the current patterns of Kuroshio with the sea level at these Islands.The sea surface currents in Sekiseishoukou and other nearby currents are observed by 24.515MHz Ocean Radar. By this observation, it is clarified the current pattern in and around Sekiseishoukou and the interaction between Sekiseishoukou and offshore (East China Sea and Pacific Ocean).The transport of coral larval born in Sekiseishoukou is observed by GPS buoy. By this observation, it was clarified that lots of coral larval settle on the sea bottom around Ishigaki and Iriomote Islands. In addition, it was clarified the possibility that some coral larval settle on the sea bottom around Miyako Island by Kuroshio and other nearby currents.The vertical microstructure in the sea surface layer in and around Sekiseishoukou was observed by the Micro-scale profiler By this observation, supply of turbulence to the sea surface due to wind or wind wave seemed to be cause of this vertical mixing in the surface layer, because as wind blew up, turbulence in the sea surface layer spread to 10 m depth. And 50cm/s of horizontal mean velocity in the sea surface was relatively fast.

Kuroshio，在东部中国海中的流动以及其他附近的潮流持续观察到9.25MHz海洋雷达。从这个观察结果上，澄清的是，黑杂志有两种当前模式，而黑果群岛和Yaeyama群岛之间的涡流结构是由Yonaguni Island造成的顺时针和逆时针涡流引起的。这些涡流的空间尺度在30至100 km之间，这些涡流的行进速度在每天15至30 km之间。此外，澄清的是，Ishigaki和Yonaguni群岛的异常海平面取决于黑鲁希奥的变化，通过将黑鲁氏的当前模式与这些岛上的海平面进行比较。Sekiseishoukou和其他附近的海面电流观察到24.515mhz Ocean Radar。通过这一观察，澄清了Sekiseishoukou及其周围的当前模式，以及Sekiseishoukou和近海（东中国海与太平洋）之间的相互作用。GPS Buoy观察到了Sekiseishoukou出生的珊瑚幼虫的运输。从这个观察结果上，澄清说，许多珊瑚幼虫在Ishigaki和Iriomote群岛周围的海底定居。此外，还澄清了可能性，一些珊瑚幼虫在宫城岛周围的海底落在海底上，以及其他附近的潮流。向上，海面层中的湍流扩散到10 m深度。海面中的水平平均速度和50厘米/s的水平平均速度相对较快。

项目成果

「研究成果報告書概要(和文)」より

摘自《研究结果报告摘要（日文）》

• 发表时间: 2005
• 作者: Kawauchi;et. al.;Nishimura et al.;Dezawa et al.;Yoshizawa et al.;星野 幹雄;星野 幹雄
• 通讯作者: 星野 幹雄

Comparison of Surface Currents measured by 9.5MHz and 24.5MHz Ocean Radars

9.5MHz和24.5MHz海洋雷达测量的表面电流比较

• 发表时间: 2006
• 期刊: Proc. of the 41st Conference of the Remote Sensing Society of JAPAN
• 作者: 林山泰久;他(分担執筆) 国土交通省鉄道局 監修;Yasuhisa Hayashiyama;児島 正一郎;Kaoru Ichikawa;Shoichiro Kojima;Kaoru Ichikawa;児島 正一郎;Shoichiro Kojima;児島 正一郎;鹿島 基彦;長尾 正之;Masayuki Nagao;長尾正之;Shoichiro Kojima;Shoichiro Kojima;Motohiko Kashima;Masayuki Nagao;Masayuki Nagao;Masayuki Nagao;Shoichiro Kojima;児島 正一郎;鹿島 基彦;Masayuki Nagao;Ryoko Tokeshi;長尾正之;鹿島基彦;Shoichiro Kojima;Shoichiro Kojima;児島正一郎;Motohiko Kashima
• 通讯作者: Motohiko Kashima

A Physical field measurement of Yaeyama Archipelago, Japan, utilized a high-frequency ocean radar and a micro-scale profiler

使用高频海洋雷达和微型剖面仪对日本八重山群岛进行物理场测量

• 发表时间: 2007
• 期刊: Proc.14thPAMS/JECSS Workshop 1
• 作者: 林山泰久;他(分担執筆) 国土交通省鉄道局 監修;Yasuhisa Hayashiyama;児島 正一郎;Kaoru Ichikawa;Shoichiro Kojima;Kaoru Ichikawa;児島 正一郎;Shoichiro Kojima;児島 正一郎;鹿島 基彦;長尾 正之;Masayuki Nagao;長尾正之;Shoichiro Kojima;Shoichiro Kojima;Motohiko Kashima;Masayuki Nagao;Masayuki Nagao;Masayuki Nagao;Shoichiro Kojima;児島 正一郎;鹿島 基彦;Masayuki Nagao
• 通讯作者: Masayuki Nagao

Observation of the Mixing Phenomenon of the fast sea surface currents in the coast by Ocean Radar and a Micro scale Pofiler

海洋雷达和微尺度Pofiler观测海岸快速海流混合现象

• 发表时间: 2007
• 期刊: Annual Journal of Hydraulic Engineering Vol.51 No.2
• 作者: 林山泰久;他(分担執筆) 国土交通省鉄道局 監修;Yasuhisa Hayashiyama;児島 正一郎;Kaoru Ichikawa;Shoichiro Kojima;Kaoru Ichikawa;児島 正一郎;Shoichiro Kojima;児島 正一郎;鹿島 基彦;長尾 正之;Masayuki Nagao;長尾正之;Shoichiro Kojima;Shoichiro Kojima;Motohiko Kashima;Masayuki Nagao;Masayuki Nagao;Masayuki Nagao
• 通讯作者: Masayuki Nagao

Wave measurements under the typhoon by 9.25-MH_z ocean radar

9.25-MH_z海洋雷达台风下波浪测量

• 发表时间: 2007
• 期刊: Proc.IEEE International Geoscience and Remote Sensing Symposium
• 作者: 林山泰久;他(分担執筆) 国土交通省鉄道局 監修;Yasuhisa Hayashiyama;児島 正一郎;Kaoru Ichikawa;Shoichiro Kojima;Kaoru Ichikawa;児島 正一郎;Shoichiro Kojima
• 通讯作者: Shoichiro Kojima