台風7916号による大阪湾・紀伊水道の高潮

Abstract

Characteristics of the storm surge due to Typhoon 7916 are considered by the observeddata, and simulated by two numerical models. Disasters associated with the typhoon arealso discussed. The first amplitude of resurgence of the storm surge which was observedin the inner part of Osaka Bay is the same order of magnitude as that of the maximumanomaly of meteorological tides. It is postulated from the data of tides and winds that thisphenomenon depends on the strong wind field accompanied with Typhoon 7916 in itssouthern area existing a dip in the pressure field.The results of numerical simulations by the 2 level model agree with the observed dataespecially in magnitude of the peak and the first amplitude of resurgences of the stormsurge, not in their phase.