Host: Science Council of Japan
Co-host: Architectural Institute of Japan, Japan Association for Wind Engineering, The Institute of Electrical Engineering of Japan, Japan Society of Steel Construction, Japan Society of Civil Engineering, Meteorological Society of Japan
Pages 8
During the passage of Typhoon Seth(T9429) over the Sakishima Islands, it had formed an extremely large elliptical eye whose horizontal extent reached as much as 100km by 80km in diameter. It rotated cyclonically with a period of 180min, and followed strong gusts of wind exceeding 50m/s. We tried to analyze its detailed structure by comparing surface meteorological data and radar composites obtained during its passage. As a result, we can obtain the azimuthally wave number two structure in pressure perturbation field with elliptically elongated rainfall distribution corresponding to the elliptical eyewall. Aerological data just outside of the elliptical eyewall indicates a warm core structure with convective unstable stratification at lower 3km.
