Tsunami Vulnerability Criteria for Fishery Port Facilities in Japan

Kentaro Imai,Masami Ogawa,Takayuki Sasaki,Masataka Noji,Takatomi Inazumi,Takehito Horie,Akira Suzuki,Kuniaki Emoto,Keisuke Mizuto,Keita Kudo

doi:10.3390/geosciences9100410

Kentaro Imai, Masami Ogawa + Show 8 more

Open Access

https://doi.org/10.3390/geosciences9100410

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Abstract

Business continuity plans (BCPs) can be effective and proactive countermeasures to respond flexibly to crises caused by unexpected natural disasters such as large tsunamis. BCP guidelines for fisheries are being issued by the Fisheries Agency (Japan) and the utilization of such BCPs has been spreading in Japan. Despite the need to promote the social implementation of BCPs in the fisheries industry, there is a lack of quantitative criteria for the tsunami damage threshold of various fishing ports and facilities. In this research, we surveyed the damage to the fishing facilities from the tsunami generated by the 2011 Tohoku-oki earthquake. Data were collected on the tsunami damage for various fishery facilities and used to establish criteria for tsunami damage thresholds. In addition, tsunami damage inferred from 1506 scenarios of tsunami computations was predicted probabilistically for a model region as the Nachi Katsu’ura Fishery Port in Wakayama Prefecture. The method we developed in this research makes it possible to assess the probabilistic tsunami damage by combining a tsunami hazard assessment method with criteria for damage occurrence for fishery port facilities and equipment.

Highlights

Advanced preparation of business continuity plans (BCPs) can facilitate effective and flexible responses to sudden natural disasters such as tsunamis
Based on the results of the study of damage to fishery port facilities and equipment, we developed criteria for damage occurrence
Pr distribution for inundation depths exceeding 1 m around the Nachi-Katsu’ura Fishery Port for 4 classes of tsunami scenario in Figure 7, The reason for the inundation depth set as exceeding 1m was used as the criteria is that the partial loss damage for fishery facilities has occurred around 1 m depth in the field results

Summary

Introduction

Advanced preparation of business continuity plans (BCPs) can facilitate effective and flexible responses to sudden natural disasters such as tsunamis. In addition to addressing human casualties and property damage in preparation of a BCP for the fisheries industry, the Fisheries Agency advises that it is important to identify factors that would be bottlenecks for business continuity due to damage to specific fishing-port facilities and equipment. Comparison of the cost of economic impacts caused by sudden disasters versus the economic costs of advanced preparation to mitigate such impacts would facilitate realistic mitigation measures. Such reviews should enable preparation of practical and persuasive BCPs

Methods

Results

Conclusion