Evaluation Method on Dynamic Behavior of Pumped-up Deep Seawater in Sagami Bay: Field Test of a Free-drifting Buoy equipped with a CTD Vertical Profiling Vehicle and a Current Meter

Abstract

In order to evaluate a behavior of pumped-up deep seawater into an euphotic zone, we conducted an field test of a free-drifting buoy equipped with an autonomous CTD vertical profiling vehicle, a current meter and a cruciform drag sail. The autonomous CTD profiling vehicle showed a good performance under favorable sea conditions although the upward movement was not smooth enough under high wave conditions (more than 1-1.5m), and the free-drifting buoy approximately followed in situ current. We also discussed the improvement method of the present free-drifting buoy.