Quantitative Evaluation of Sea-ice Disaster in Bohai Sea Based on GOCI and Sentinel-1

doi:10.11947/j.JGGS.2021.0106

Abstract

Abstract:

The Circum-Bohai-Sea Region is an important economic zone of China. The sea ice, which occurs at each winter, is the major marine hazard of the Bohai Sea. As a result, it is very important to evaluate the damage effects quantitatively in this region, which is seldom studied and analyzed systematically using long-time-series data. In this paper, the sea-ice disaster in the Bohai Sea is evaluated quantitatively based on the Sentinel-1 and GOCI. For different hazard-bearing bodies of the marine transportation and the offshore constructions, different sea-ice-hazard indexes are defined, which can be applied to analyze the sea-ice disaster quantitatively in the Bohai Sea, including the annual and inter-annual variations in the period from 2011 to 2017. The analysis results can provide the reference of the sea-ice monitoring in the Bohai Sea.

Key words: the Bohai Sea; sea-ice disaster; the quantitative evaluation; Sentinel-1; GOCI

Meijie LIU,Jin WANG,Shilei ZHONG,Hao YOU,Qi LIANG,Ting CHEN,Wenbo LI,Xiaohan YANG. Quantitative Evaluation of Sea-ice Disaster in Bohai Sea Based on GOCI and Sentinel-1[J]. Journal of Geodesy and Geoinformation Science, 2021, 4(1): 49-55.

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Sea-ice parameters	Grade 1 Non hazard	Grade 2 Low hazard	Grade 3 Mild hazard	Grade 4 Severe hazard
Concentration	0~15%	15~50%	50~80%	80~100%
Thickness	0~0.1m	0.1~0.2m	0.2~0.3m	>0.3m
Velocity	0~0.2m/s	0.2~0.4m/s	0.4~0.6m/s	>0.6m/s