A New Model for Generating Mass-Consistent Ocean Current for Coastal Sea Areas

2015 Fiscal Year Final Research Report

• Project/Area Number: 26740033
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Environmental impact assessment
• Research Institution: National Maritime Research Institute
• Principal Investigator: ASAMI Mitsufumi 国立研究開発法人 海上技術安全研究所, その他部局等, 主任研究員 (80446591)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 質量保存流速場モデル / 海流推定手法 / MASCON

Outline of Final Research Achievements

Mass-consistent models have some disadvantages, because they have difficulty representing flows accurately in data-sparse regions as oceans. Mass-consistent ocean current for coastal sea areas depends on several parameters that arise in various stages of calculation process; the construction of the initial current field using horizontal interpolation of the current data, and the stability parameter which allows from a strictly horizontal current adjustment to a vertical current. In general, the values of all of these parameters are based on empirical laws. This work is the estimation of these parameters using genetic algorithms, such that some of the current velocities, which are given by current data as Japan Coastal Ocean Predictability Experiment (JCOPE). The modified current field has more reasonable trajectories and magnitudes than a simple interpolation of the current data.

Free Research Field

放射性物質大気海洋拡散