A field visit in Ishigaki Island, Okinawa Prefecture, was performed from August 26 to 27 organized by a committee on coral reef restoration by Fisheries Agency. We visited Research Center for Subtropical Fisheries, Seikai National Fisheries Research Institute, Fisheries Research and Education Agency.
Hybrid methods combining atmospheric reanalysis data and a parametric typhoon model to hindcast storm surges in Tokyo Bay
Reanalysis data and a parametric typhoon model formula are often used to prepare wind and pressure fields for storm surge hindcasting. However, their optimum selection and usage have not been well established. To enhance the accuracy of wind and pressure fields, two hybrid methods were proposed by applying a parametric typhoon model of Mitsuta–Fujii’s formula, which is determined from the typhoon center to a certain radius of Rb, and then switching to the reanalysis data of ERA-Interim in the outer region through the interpolated transition bandwidth of Wb. In hybrid model I, Rb and Wb were fixed because the time-varying radius of the maximum wind speed was determined by the […]
Dr. Sasaki delivered a keynote talk in the international symposium, iSymWater2019, held at Xijiao Hotel in Beijing, entitled “Sustainable Marine Environment and Coastal Disaster Mitigation in Tokyo Bay.” One of the organizers of this symposium is School of Environment, Beijing Normal University, with which Graduate School of Frontier Sciences, the University of Tokyo has concluded Memorandum of Understanding (MOU) since May, 2019. This symposium was also reported by China Daily.
Dr. Sasaki was dispatched to Can Tho University, Vietnam from August 6 to 11, 2019, by JICA. Itinerary was JL79 HND/SGN 1:25/5:15, JL70 SGN/HND 23:25/6:55+1. The university is located in a big city of Can Tho in Mekong Delta and traditionally famous in agriculture, fishery, and aquaculture. The university is expanding the field of environmental studies, including delta management.