Study on the sea ice motion and its influence factors in the northern Nares Strait, Arctic in 2016−2017

Wang Zihan; Liu Tingting; Xu Suqing; Wang Miaojiang

doi:10.12284/hyxb2021113

Volume 43 Issue 7

Jul. 2021

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Wang Zihan，Liu Tingting，Xu Suqing, et al. Study on the sea ice motion and its influence factors in the northern Nares Strait, Arctic in 2016−2017[J]. Haiyang Xuebao，2021, 43(7)：194–204 doi: 10.12284/hyxb2021113

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Study on the sea ice motion and its influence factors in the northern Nares Strait, Arctic in 2016−2017

doi: 10.12284/hyxb2021113

1.
Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China
2.
Key Laboratory of Global Change and Marine-Atmospheric Chemistry, Ministry of Natural Resources, Xiamen 361005, China

Received Date: 2020-12-31
Rev Recd Date: 2021-04-19

Available Online: 2021-06-18

Publish Date: 2021-07-25

Abstract

Abstract

The Nares Strait, located between Ellesmere Island, Canada and Greenland, is one of the important channels for the export of Arctic sea ice. The surface fresh water brought by the melting of these sea ice has a vital impact on the formation of deep water in the Baffin Bay and the Labrador Sea. However, due to its relatively narrow structure, there is no detailed study on the sea ice motion in this area. In this study, the daily Sentinel-1 images were used to extract the information of sea ice motion in the northern region of Nares Strait from September 2016 to August 2017, to show the motion process of ice floes in the strait, and to analyze the characteristics and influencing factors of ice floe motion combined with wind speed, current speed and other data. The results show that wind and current jointly dominate the motion of sea ice, with the correlation coefficients are 0.767 and 0.709, respectively. The multiple linear regression model established by wind speed, current speed and sea ice concentration with ice speed also has the complex determination coefficient reaching 0.727. Further analysis shows that both wind and sea current have relatively less influence on sea ice speed when their speed is relatively stable. The results of this study on the influence of wind and ocean currents on the process of sea ice motion can provide references for the study of ocean-atmospheric dynamics models.
- Nares Strait,
- sea ice motion,
- Sentinel-1,
- wind,
- ocean current

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References

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