Elucidations of Tsushima Warm Current path and its branch mechanism by using Long Range Ocean Radar

2016 Fiscal Year Final Research Report

• Project/Area Number: 25247076
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Ehime University (2015-2016); Nagoya University (2013-2014)
• Principal Investigator: Morimoto Akihiko 愛媛大学, 沿岸環境科学研究センター, 教授 (80301323)
• Co-Investigator(Kenkyū-buntansha): 滝川 哲太郎 独立行政法人水産大学校, 海洋生産管理学科, 准教授 (10371741) ; 雨谷 純 国立研究開発法人情報通信研究機構, 沖縄電磁波技術センター, センター長 (30358949) ; 藤井 智史 琉球大学, 工学部, 教授 (30359004) ; 市川 香 九州大学, 応用力学研究所, 准教授 (40263959) ; 杉谷 茂夫 国立研究開発法人情報通信研究機構, 沖縄電磁波技術センター, 研究員 (70643170) ; 広瀬 直毅 九州大学, 応用力学研究所, 教授 (70335983)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 海洋レーダ / 対馬暖流

Outline of Final Research Achievements

We have carried out continuously sea surface current observation by using Ocean Radars which are installed Tsushima in Nagasaki Prefecture and Aishima in Yamaguchi Prefecture in order to reveal existence of 2nd branch of the Tsushima Warm Current which flows along 200-m isobath after passing through the Tsushima Strait and its seasonal variation. We have tried to develop new type of Ocean Radar System. It was succeeded from Ocean Radar observation that 1st branch of the Tsushima Warm Current along 100-m isobath and 2nd branch along 200-m isobath were captured. We have developed new type of Ocean Radar, which radio wave emits from one Radar site and reflected radio wave from ocean surface are received at two Radar site. We have carried out continuously observation by using the new Ocean Radar, and we can measure sea surface current at 170 km far from Radar site.

Free Research Field

海洋物理学