[P19] Tsunami deposits study for long term risk assessment
| 所属 | Tohoku University IRIDeS |
|---|---|
| 筆頭著者・発表者 | Salvati Arthur 猪瀬大輝 |
| 共著者 | 猪瀬大輝（東北大学 災害科学国際研究所） 菅原大助（東北大学 災害科学国際研究所） 石澤尭史（東北大学 災害科学国際研究所） 増田英敏（東北大学 災害科学国際研究所） |
キーワード
- 津波堆積物
- 剥ぎ取り標本
- リスク評価
概要
Tsunami events are one of the most destructive natural hazards, with large events causing loss of life, livelihood and damage to infrastructure. Tsunami surveys are an important tool for hazard assessments to attempt to mitigate the destruction of future events. But due to the rare occurrence of tsunamis, only a small amount have been measured with modern methods. This lack of data represents a limitation in the development of tsunami forecasting through simulation. Therefore, tsunami sedimentology enables researchers to reconstruct events in the past by estimating wave heights, inundation, and the recurrence of tsunamis in a given location. To achieve this, the erosion and deposition of a tsunami event is studied in preserved sediment layers. With a more complete historical tsunami record, the accuracy of hazard assessments in coastal areas can be improved. This poster illustrates how tsunami deposits can be used to improve risk assessments with a core sampled in Shimokita peninsula as a physical example.
