Tsunami Simulation Taking Into Account Seismically Induced Dynamic Seabed Displacement, and Acoustic Effects of Water

Author(s):  
Tatsuo Ohmachi
Keyword(s):  
Author(s):  
Toshikazu KITANO ◽  
Tomohiro YASUDA ◽  
Yo FUKUTANI

2015 ◽  
Vol 2 (3) ◽  
Author(s):  
Tatsuo Ohmachi ◽  
Shusaku Inoue ◽  
Tetsuji Imai

The 2003 Tokachi-oki earthquake (MJ 8.0) occurred off the southeastern coast of Tokachi, Japan, and generated a large tsunami which arrived at Tokachi Harbor at 04:56 with a wave height of 4.3 m. Japan Marine Science and Technology Center (JAMSTEC) recovered records of water pressure and sea-bed acceleration at the bottom of the tsunami source region. These records are first introduced with some findings from Fourier analysis and band-pass filter analysis. Water pressure disturbance lasted for over 30 minutes and the duration was longer than those of accelerations. Predominant periods of the pressure looked like those excited by Rayleigh waves. Next, numerical simulation was conducted using the dynamic tsunami simulation technique able to represent generation and propagation of Rayleigh wave and tsunami, with a satisfactory result showing validity and usefulness of this technique. Keywords: Earthquake, Rayleigh wave, tsunami, near-field


Author(s):  
Yusuke YAMANAKA ◽  
Shinji SATO ◽  
Yoshimitsu TAJIMA ◽  
Takenori SHIMOZONO ◽  
Hiroshi SANUKI

2012 ◽  
Vol 68 (2) ◽  
pp. I_168-I_173
Author(s):  
Satoshi INAGAKI ◽  
Tsuyoshi IKEYA ◽  
Masayuki TAKEMURA
Keyword(s):  

2016 ◽  
Vol 43 (4) ◽  
pp. 82-87 ◽  
Author(s):  
Kentaro Sano ◽  
Fumiya Kono ◽  
Naohito Nakasato ◽  
Alexander Vazhenin ◽  
Stanislav Sedukhin

2018 ◽  
Vol 229 ◽  
pp. 04007
Author(s):  
Eko Pradjoko ◽  
Lukita Wardani ◽  
Hartana ◽  
Heri Sulistiyono ◽  
Syamsidik

The past earthquake records in North Lombok show the high level of earthquake hazard in this area. The maximum magnitude of the earthquake was 6.4 Mw on May 30th, 1979. But, there were no tsunami events records due to those earthquakes. Nevertheless, this area is very close to Mataram City (province capital city) and tourism area. Therefore, the assessment of tsunami hazard is very important. The tsunami simulation was conducted by using COMCOT Model, which is based on the North Lombok Earthquake as the initial condition. The simulation result shows the prediction of tsunami travel time is about 18 ~ 20 minutes from the source location to Mataram City. The height of the tsunami wave is 0.13 ~ 0.20 meters due to the earthquake magnitude is about 6 Mw.


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