- 中文核心期刊
- 中国科技核心期刊
- ISSN 1007-6336
- CN 21-1168/X
| Citation: |
MA Yuxian, YUAN Guangqi, CHEN Yuan, TIAN Ye, YUAN Shuai, XU Ning. Probability distribution of sea ice uniaxial compressive strength in Yingkou based on thermodynamic numerical model[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2023, 42(6): 834-840. DOI: 10.12111/j.mes.2022-x-0315
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Sea ice has an important impact on human economic activity in ice areas. Based on the data of sea ice temperature and sea ice salinity observed in Jiangjunshi port, combined with the parametric formula of sea ice brine volume, this paper gives the formula for evaluating the sea ice brine volume fraction based on sea ice temperature. Combined with the results of sea ice temperature profile calculation in the 1951－2018, the evolution process of uniaxial compressive strength of sea ice is reproduced. The analysis of the uniaxial compressive intensity inter-annual average showed a decreasing trend in seasons at a rate of 0.0027 MPa/a. Finally, the probability distribution of sea ice uniaxial compressive intensity in Yingkou sea area was analyzed, and the occurrence probability of sea ice with less intensity increased after 1990s. The analysis of the return period of the sea ice mechanical strength in the Yingkou, showing that the difference between the 1960s and the last 10 years increases with the increase of the recurrence period, and the intensity value of the recurrence period given by the specification is smaller than the calculation results of this paper. This work will provide scientific support for the formulation of disaster prevention and mitigation management strategies for sea ice disasters.
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