Earthquake, Tsunami Disaster Prevention Measures and Several Improvement Problems in Port Alberni, British Columbia

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  • Kagawa Takashi
    Kyoto University of Education (KUE) Momoyama Elementary School attached to KUE

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  • ブリティッシュ・コロンビア州ポートアルバーニにおける地震および津波防災対策とその課題
  • ブリティッシュ ・ コロンビアシュウ ポートアルバーニ ニ オケル ジシン オヨビ ツナミ ボウサイ タイサク ト ソノ カダイ

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Abstract

<p>Port Alberni in the west coast of Vancouver Island, British Columbia is a city in the inner part of Alberni Inlet as a major fjord. Records have shown that tsunami damage has taken place here due to the specific geomorphological environment. Port Alberni was last struck by a tsunami and suffered damage following the Good Friday Earthquake which occurred in Alaska on March 27, 1964. In this article, the author clarifies some of characteristics of the earthquake and the tsunami disaster prevention measures currently employed in Port Alberni. There are no large-scale seawalls in this area, such as those used in the Sanriku region in the northeast part of Japan. As a substitute emphasis is placed on spreading knowledge about the risk of tsunami disaster and the available evacuation routes. However, there are several problems as follows: neither the tsunami evacuation route nor the extent of the tsunami inundation zone are described clearly; there is no indication of the height above the sea level at any point along the tsunami evacuation route; and in some areas of the evacuation route there are steps that are difficult to navigate. </p>

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