Disaster prevention education through learning about past heavy rainfall and debris flow damage

Abstract

<p>This study is an introduction to disaster prevention education for high school students, which aims to raise disaster prevention awareness by learning about disasters that occurred in the past. We live in Hiroshima, Japan. There are many fan-shaped regions in this area, and when heavy rain falls due to the rainy season or typhoons, it is easy for debris flow disasters to occur. The most recent damage was caused by a heavy rain in July 2018. On July 7, 2018, 250 to 300 mm of rain fell in one day. As a result, debris flow damage occurred, greatly affecting the students’ life. Debris flow damage is said to occur repeatedly in the same place. Therefore, I think that learning from the past damage will help students learn about future disaster prevention. </p><p>My students have studied the following 1 and 2 since April 2019. And we worked with graduate student and a professor at Hiroshima University.</p><p>1: Case study of debris flow damage caused by a typhoon (Makurazaki-typhoon) that occurred in 1945.</p><p>A huge typhoon occurred in September 1945, causing heavy rainfall and a debris flow disaster. Then our area was very confused. (Because, just after the war, only one month had passed since the atomic bomb was dropped). Therefore, details of the debris flow damage caused by the typhoon are not known.</p><p>So, we analyzed the aerial photographs taken after the disaster and clarified the extent of the damage. We examined the Kirikushi district in Etajima City, Hiroshima Prefecture, Japan as a case area.</p><p> </p><p>2: Case study of debris flow damage through fieldwork.</p><p>We went to the area we studied in 1. We talked with people who were once affected by debris flow damage in 1945.<span>  </span>As a result, we were able to clarify the situation immediately after the occurrence of debris flow.<span>  </span>And we also asked about the debris flow damage in 2018 and compared the two damages.</p>