1. 5) Shimada, Y. : Fundamental Study of Tracking Simulation of Large- and Middle-scale Drifting Objects in the North Pacific: Leeway Effect, Proceedings of the Twenty-third (2013) International Offshore and Polar Engineering Conference, pp. 135-140, 2013.
2. 9) Kalnay et al. : The NCEP/NCAR 40-year reanalysis project, Bull. Amer. Meteor. Soc., Vol. 77, pp. 437-470, 1996.
3. 10) Amante, C. and B. W. Eakins : ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis, NOAA Technical Memorandum NESDIS NGDC-24, pp. 1-19, National Geophysical Data Center, NOAA, 2009.
4. 11) Cheney et al. : Tracking a Kuroshio cold ring with a free-drifting surface buoy, Deep Sea Research Part A, Vol. 27, Is. 8, pp. 641-654, 1980.