DEVELOPING AN EVACUATION SUPPORT MAP AT THE OTSUCHI COASTAL REGION, A MULTIPLE-DISASTER-OCCURRENCE SITE

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  • 岩手県大槌町臨海地域における複合災害発生を考慮した避難支援マップの作成
  • イワテケン オオツチマチ リンカイ チイキ ニ オケル フクゴウ サイガイ ハッセイ オ コウリョ シタ ヒナン シエン マップ ノ サクセイ

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 To prepare a more practical evacuation plan to combat unprecedented multiple disasters, the tsunami numerical model was developed and a GIS analysis of tsunami evacuation behaviour after the Great East Japan Earthquake was conducted at the Otsuchi coastal region. The arrival time and the inundation process of tsunami between Ando and Kirikiri district, a distance of merely 2 km, were significantly different and showed unique regional characteristics. The GIS analysis clarified the lack of imagination of tsunami destructive power, the cognitive status of designated location of the shelter, the evacuation behaviour during tsunami attack, and proposed the issue of shelter placement based on these. Considering the past disaster and the potential risk involved, a new evacuation support map for recognising various natural disasters was developed and the nearest site for shelter was located and checked for its accessibility.

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