Ocean variability in the Southernmost Philippine Sea
Yuji Kashino*1, Hidetoshi Watanabe*2, Bambang Herunadi*3, Michio Aoyama*4, Djoko Hartoyo*3 and Akio Ishida*1
*1 Japan Marine Science and Technology Center
*2 Sanyo Techno Marine, Inc.
*3 Badan Pengkajian Dan Penerapan Teknologi
*4 Meteorological Research Institute
Current variability in the Southernmost Philippine Sea is investigated using direct current and hydrographic measurements, and numerical results from the JAMSTEC Eddy-resolving General Circulation Model (JEGCM).
Results from Moorings, which were deployed at the southwestern boundary of the Philippine Sea, show that 50-day oscillations occur in this region. Seasonal change of the current was also seen in the mooring results; it is consistent with those from hydrographic observations conducted in the Philippine Sea during boreal winter and summer, and it is perhaps due to the movement of the Halmahera Eddy.
Similar results are also obtained from JEGCM. For example, similar oscillation is appeared in the model results although its frequency is a little different from observation. The seasonal current pattern change in the southernmost Philippine Sea from the model result is also consistent with observations.
