FIELD INVESTIGATION OF DISASTERS IN SRI LANKAN RIVERS CAUSED BY THE 2004 INDIAN OCEAN TSUNAMI

摘要

The 2004 Indian Ocean Earthquake of magnitude 9.0 triggered a series of lethal tsunamis on December 26th, 2004 that killed over 225,000 people, making it the deadliest tsunami in recorded history. In order to investigate this tsunami and related damages from hydrological and hydraulic aspects, the Committee on Hydroscience and Hydraulic Engineering, Japan Society of Civil Engineers (JSCE) sent its members to Sri Lanka in May 2005. Their fields of study are coastal engineering, river engineering, hydraulic engineering and hydrology as a tsunami investigation team by JSCE. In this paper, the results of a field investigation are shown mainly for tsunami disasters in rivers. The findings of our survey may be useful for preparing for tsunami disaster prevention in Sri Lanka, as well as in Japan, where tsunamis are very likely to occur in the near future.