The 2011 off the Pacific coast of Tohoku-oki earthquake triggered an extremely large tsunami. The authors conducted a field survey in Asahi City, Chiba Prefecture, after the occurrence of the earthquake. Although located farther away from the source region of the earthquake, there was still significant damage in this area. Tsunami-inundated areas in Asahi City were identified from the map developed by disaster relief volunteers and the satellite images captured after the event. Polygons to demonstrate the tsunami-inundated areas were developed in the geographic information system. The authors compared the identified affected areas with the existing tsunami hazard map of Asahi City. The relationship between the tsunami-inundated areas and the locations of seawalls and tide-prevention forests was evaluated. In addition, a numerical simulation of tsunami propagation was performed and the ratio of totally collapsed buildings to the total number of buildings, that is, damage ratio, in terms of the estimated inundation depths was evaluated.
BerteroV. V., CorleyW. G., DegenkolbH. J., HakalaW. W., HansonR. D., JirsaJ. O., JohnstonR. G., KrawinkerH., LuL., MahinS. A., McClamrochN. H., RoederC. W., SharpeR., and WightJ. K., 1985. Damage survey of the Nihon-Kai-Chubu, Japan, earthquake of May 26, 1983, Earthquake Spectra1, 319–352.
ChenP., LiewS. C., and KwohL. K., 2005. Tsunami damage assessment using high-resolution satellite imagery: A case study of Aceh, Indonesia, in Proceedings of the International Geosciences and Remote Sensing Symposium, IGARSS 2005, 1405–1408.
6.
Earthquake Engineering Research Institute (EERI), 2011a. The Japan Tohoku Tsunami of March 11, 2011, EERI Special Earthquake Report, November 2011.
7.
Earthquake Engineering Research Institute (EERI), 2011b. The Tohoku, Japan, Tsunami of March 11, 2011: Effects on Structures, EERI Special Earthquake Report, September 2011.
FurumuraT., and SaitoT., 2009. Integrated ground motion and tsunami simulation for the 1944 Tonankai earthquake using high-performance supercomputers, Journal of Disaster Research4, 118–126.
ImamuraF., 1995. Review of tsunami simulation with a finite difference method, Long-Wave Runup Models, World Scientific, 25–42.
14.
InoueS., WijeyewickremaA. C., MatsumotoH., MiuraH., GunaratnaP., MadurapperumaM., and SekiguchiT., 2007. Field survey of tsunami effects in Sri Lanka due to the Sumatra-Andaman earthquake of December 26, 2004, Pure and Applied Geophysics164, 395–411.
15.
IwabuchiY., SuginoH., EbisawaK., and ImamuraF., 2008. Reviewed database of the tsunami Run-up Data on the Documentation in Japan, in Proceedings of the 14th World Conference on Earthquake Engineering, Paper ID 15-0036, p. 8.
16.
KoshimuraS., KatadaT., MofjeldH. O., and KawataY., 2006. A method for estimating casualties due to the tsunami inundation flow, Natural Hazards39, 265–274.
17.
KoshimuraS., MatsuokaM., and KayabaS., 2009. Integrated approach to assess the impact of tsunami disaster, in Proceedings of ICOSSAR 2009, 2302–2307.
18.
KoshimuraS., OieT., YanagisawaH., and ImamuraF., 2009. Developing fragility functions for tsunami damage estimation using numerical model and post-tsunami data from Banda Aceh, Indonesia, Coastal Engineering Journal, JSCE, 51, 243–273.
19.
KotaniM., ImamuraF., and ShutoN., 1998. New method of tsunami runup and estimation of damage using GIS data, in Proceedings of the Coastal Engineering, JSCE, 45, 356–360 (in Japanese).
20.
KouchiK., and YamazakiF., 2007. Characteristics of tsunami-affected areas in moderate-resolution satellite images, IEEE Transactions on Geoscience and Remote Sensing45, 1650–1657.
21.
LiuP. L. F., YehH., and SynolakisC., 2008. Advanced numerical models for simulating tsunami wave and runup, Advances in Coastal and Ocean Engineering, World Scientific.
22.
National Police Agency of Japan, 2011. Damage situation and police countermeasures associated with 2011 Tohoku district—off the Pacific Ocean Earthquake, available at http://www.npa.go.jp/archive/keibi/biki/higaijokyo_e.pdf.
23.
OhmachiT., TsukiyamaH., and MatsumotoH., 2001. Simulation of tsunami-induced by dynamic displacement of seabed due to seismic faulting, Bulletin of the Seismological Society of America91, 1898–1909.
24.
OkadaY., 1985. Surface deformation due to shear and tensile faults in a half-space, Bulletin of the Seismological Society of America, 75, 1135–1154.
25.
RuangrassameeA., YanagisawaH., FoytongP., LukkunaprasitP., KoshimuraS., and ImamuraF., 2006. Investigation of tsunami-induced damage and fragility of buildings in Thailand after the December 2004 Indian Ocean tsunami, Earthquake Spectra22, S377–S401.
26.
SaatciogluM., GhobarahA., and NistoraI., 2006. Performance of structures in Thailand during the December 2004 Great Sumatra earthquake and Indian Ocean tsunami, Earthquake Spectra22, S355–S375.
27.
ShutoN., 1991. Numerical simulation of tsunamis—Its present and near future, Natural Hazards4, 171–191.
28.
The 2011 Tohoku Earthquake Tsunami Joint Survey Group, 2011. Nationwide field survey of the 2011 off the Pacific Coast of Tohoku Earthquake tsunami, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 67, 63–66.
