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Yoshida, S. ., Woods Hole Oceanographic Institution, Woods Hole, USA, syoshdia@whoi.edu
Jayne, S. R., Woods Hole Oceanographic Institution, Woods Hole, USA, sjayne@whoi.edu
Macdonald, A. M., Woods Hole Oceanographic Institution, Woods Hole, USA, amacdonald@whoi.edu
Buesseler, K. ., Woods Hole Oceanographic Institution, Woods Hole, USA, kbuesseler@whoi.edu

VELOCITY AND HYDROGRAPHIC FEATURES OF THE KUROSHIO-OYASHIO CONFLUENCE ZONE

Hydrographic and velocity data obtained from the R/V Ka'imilai-O-Kanaloa (KOK) cruise in June 2011 are examined to understand the ocean current system and water mass characteristics in the Kuroshio-Oyashio mixed region. Water samples were obtained from offshore stations toward the coastal region with several north-south transections across the Kuroshio. A vessel mounted acoustic Doppler current profiler (SADCP) collected data during the entire cruise period with 15-minute temporal resolution. After tidal component is removed from the SADCP velocity using OSU TPXO 7.2 tide model, the resultant surface currents capture the weak coastal flows (~0.1 m/s) as well as strong Kuroshio current (> 2 m/s) from surface to 415 dbar, which are well correlated with the altimeter geostrophy currents. The correlation coefficients are 0.68 and 0.79 for zonal and meridional components, respectively. In order to more closely examine the detailed structure of the coastal ocean, we use the Navy Costal Ocean Model (NCOM) outputs on 1km resolution. The presentation will include the analysis of water properties measured from CTDs in combination with the NCOM outputs.

Poster presentation

Session #:088
Date: 2/21/2012
Time: 17:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: B1014