极地研究2018，Vol.30Issue(2)：154-160,7.DOI:10.13679/j.jdyj.20170021
1979-2015年罗斯海海冰运动速度变化
VARIATION OF SEA ICE MOTION VELOCITY IN THE ROSS SEA (1979–2015)
摘要
Abstract
Using data of monthly mean sea ice motion velocity and sea ice concentration, provided by the National Snow and Ice Data Center, we established the temporal variation of sea ice motion velocity in the Ross Sea (1979–2015). The interannual and seasonal variational characteristics of sea ice motion velocity were revealed, as was the rela-tionship between sea ice motion velocity and sea ice extent. Finally, the factors influencing the variation of sea ice motion velocity were analyzed. The results showed that sea ice motion velocity in the Ross Sea increased during 1979–2015; the rate of increase was fastest in autumn, followed by winter, spring, and summer. The average motion velocity of sea ice in winter was highest, followed by autumn, spring, and summer. The sea ice motion velocity and sea ice extent both showed increasing trends over the 37-year period. Although the variation of sea ice motion ve-locity lagged sea ice extent by 1–2 months, significant positive correlation was found between them, and the in-crease of sea ice motion velocity caused the extent of sea ice to expand, affecting the distribution of Antarctic sea ice. Significant positive correlation was found between sea ice motion velocity and wind speed in the Ross Sea, indicat-ing that the wind field was a factor contributing directly to the variation of sea ice motion velocity. In addition, sea ice motion was also affected by the pressure field, ocean currents, and ocean drag coefficient.关键词
罗斯海/海冰运动速度/海冰密集度/海表面风速Key words
Ross Sea/sea ice motion velocity/sea ice concentration/sea surface wind引用本文复制引用
刘伊格,柯长青,张杰..1979-2015年罗斯海海冰运动速度变化[J].极地研究,2018,30(2):154-160,7.基金项目
国家自然科学基金(41371391)、国家重点研发计划项目(2016YFA0600102)资助 （41371391）
