The Survey of the North Iwate Area Due to the 2011 Off the Pacific Coast of Tohoku Earthquake

Inukai, Naoyuki; Hosoyamada, Tokuzo; Lu, Minjaro; Kumakura, Toshiro; Minami, Masato; Irie, Hitoshi

doi:10.2208/jscejoe.68.i_19

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“…Iwate Prefecture was especially impacted with more than 6,000 dead and missing persons and 23,000 collapsed homes. More than 45,000 buildings in Iwate Prefecture were inundated by the tsunami (Yanagawa et al, 2014a), and various reports noted that most buildings were flooded or extremely damaged (Arikawa, 2012;Hiraishi, 2012;Inukai et al, 2012;Kawasaki, 2012;Suppasri et al, 2012;Suzuki et al, 2012). In addition, various purpose-developed analytical techniques were applied to quantitatively clarify the extent of building damage, which could only previously be ascertained qualitatively (Charvet et al, 2014;Gokon et al, 2016;Koshimura et al, 2012a;Koshimura et al, 2012b;Macabuag et al, 2016;Narita et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Development and Application of a Building Group Destruction Probability Model Based on the Great East Japan Earthquake Tsunami Experience

Yanagawa

2017

Journal of Natural Disaster Science

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This study examined the regional spatial characteristics of tsunami flooding and building damage using geographic information systems. An analytical model that evaluates total building destruction risk was developed using building damage data from coastal areas in Iwate Prefecture. Building density characteristics in the study area were categorized into four types of environments: (1) many isolated buildings, (2) combination of isolated and neighboring buildings, (3) combination of neighboring and surrounding buildings, and (4) many neighboring buildings. Many isolated buildings were located along the narrow, low-lying areas facing the Pacific Ocean. In comparison, higher building densities were observed along the inner part of the enclosed gulf topography. Most buildings located near the shoreline collapsed. Farther inland, a higher percentage of buildings experienced half-collapse or no-damage. Closer inspection of the varying spatial distribution characteristics and resultant building damage among the 27 target areas led to the identification of several key indicators for predicted building damage including the structure, use, and density of the affected building and the extent of tsunami inundation. Based on the building damage characteristics following the 2011 tsunami, a building group destruction probability model was developed and verified. The proposed model successfully estimated building collapse ratios using the available data.

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Section: Introductionmentioning

confidence: 99%

Development and Application of a Building Group Destruction Probability Model Based on the Great East Japan Earthquake Tsunami Experience

Yanagawa

2017

Journal of Natural Disaster Science

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show abstract

The Survey of the North Iwate Area Due to the 2011 Off the Pacific Coast of Tohoku Earthquake

Cited by 1 publication

References 2 publications

Development and Application of a Building Group Destruction Probability Model Based on the Great East Japan Earthquake Tsunami Experience

Development and Application of a Building Group Destruction Probability Model Based on the Great East Japan Earthquake Tsunami Experience

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