Journal of The School of Marine Science and Technology,Vol.3 No.2
The Characteristics of M8.7 Nias Earthquake of March 28, 2005 and Induced Tsunami and Structural Damages
Omer AYDAN, Shigeru MIWA, Hiroyuki KODAMAand Tomoji SUZUKI
Abstract
A very large earthquake with a magnitude of 8.7occurred nearby Nias Island of Indonesia on March 28,2005. Although the magnitude of the earthquake was large,the scale of the induced tsunami was very small.This may be due to the particular sea topography and the small amplitude of the uplift of the seabed. Strong ground motions induced heavy casualties and damages to structures.Although the magnitude of this earthquake was much smaller than that of December 26, 2004, the induced strong ground motions were much higher. The earthquake induced widespread liquefaction and lateral spreading.This phenomenon was the primary cause of heavy damage to bridges and buildings in Nias Island.
     
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