Abstract
After standard seawalls have been built successfully, fishery ports become the structures most easily damaged during a typhoon. Assessments of the resilience of fishery ports to typhoon damage would be useful for identifying weaknesses and implementing corrective measures to protect fishing boats from a typhoon. This study describes a versatile methodology for conducting this type of quantitative assessment at fishery ports. The Dongsha fishery port in Zhejiang Province was selected as a case study to test the results derived from a high-precision Hydrodynamic Flexible Mesh model coupled with the Spectral Wave model. First, typhoon characteristics were assessed based on historical typhoons in the study area, and then, the wind, tide, storm surge, and waves were modeled and tide-surge interactions were investigated. Through comparisons of the destructive parameters from the typhoon assessment with the design and structural parameters of the fishery port, the resistance level of the Dongsha fishery port against typhoons was determined to be 12, and the main weaknesses of the port's defenses were found to be located near feature points T2, T3, T8, and T15. The results obtained demonstrate that the proposed methodology can be used to acquire valuable information on the resilience of fishery ports to typhoons.
Highlights
As one of the countries with the largest fishery resources around the world, China ranks first in the world in terms of the output of aquatic products, number of fishing boats, and number of fisheries employees (NDRC and MARA, 2018)
The results showed that the maximum resistance level of the Dongsha fishery port against typhoon damage is 16
This study described a systematic and quantitative method for assessing the resilience of fishery ports to typhoons, and a case study was carried out on the Dongsha fishery port in Zhejiang Province, China
Summary
As one of the countries with the largest fishery resources around the world, China ranks first in the world in terms of the output of aquatic products, number of fishing boats, and number of fisheries employees (NDRC and MARA, 2018). China lies on the west coast of the Pacific Ocean, its coastal areas are susceptible to various marine disasters, especially typhoons and storm surges (Ministry of Natural Resources of the People’s Republic of China, 2019). Province near the East China Sea is well-known for fishing. Coastal areas within Zhejiang, especially the city of Wenzhou, are vulnerable to typhoon-related damage (Du et al, 2020; Shi et al, 2020b). More than one typhoon strikes the coast of Zhejiang Province, and these typhoons frequently cause damage to the breakwater structures, wharfs, and fishing boats.
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