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2003年夏季北冰洋海冰动力学特征参数
引用本文:李志军,张占海,卢鹏,董西路,程斌,陈陟.2003年夏季北冰洋海冰动力学特征参数[J].水科学进展,2007,18(2):193-197.
作者姓名:李志军  张占海  卢鹏  董西路  程斌  陈陟
作者单位:1.大连理工大学海岸和近海工程国家重点实验室, 辽宁, 大连, 116024;
基金项目:国家自然科学基金;科技部科技基础条件平台建设计划
摘    要:以2003年的中国第2次北极科学考察的海冰物理过程调查数据为依据,分析了海冰动力学特征并给出体现动力学特征的定量参数。这些参数指出:现场调查的海冰密集度同NOAA冰图上的密集度相比低2~3成,而厚度比1999年的中国首次北极考察结果减少2 m;冰层底面起伏方差约是冰层表面积雪起伏方差的3.8倍;浮冰最快以1 300m/h速度运动并伴随振荡旋转。实测浮冰向东北运动时,旋转角度增加,最大达到37.8o,东南方向旋转时,角度减小;浮冰运动的振荡周期为12.45 h,同该纬度惯性流振荡周期一致,体现出惯性流对浮冰运动的贡献。

关 键 词:北极    海冰    密集度    厚度    粗糙度    旋转
文章编号:1001-6791(2007)02-0193-05
收稿时间:2005-09-16
修稿时间:2005-12-31

Some parameters on Arctic sea ice dynamics from the expedition in summer of 2003
LI Zhi-jun,ZHANG Zhan-hai,LU Peng,DONG Xi-lu,CHENG Bin,CHEN Zhi.Some parameters on Arctic sea ice dynamics from the expedition in summer of 2003[J].Advances in Water Science,2007,18(2):193-197.
Authors:LI Zhi-jun  ZHANG Zhan-hai  LU Peng  DONG Xi-lu  CHENG Bin  CHEN Zhi
Affiliation:1.State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;2.Polar Research Institute of China, Shanghai 200129, China;3.Finnish Institute of Marine Research, FIN-00931 Helsinki, Finland;4.National Marine Environment Forecast Center, Beijing 100081, China
Abstract:Based on the investigated data of sea ice physical processes during the Second Chinese National Arctic Research Expedition(CHINARE 2003)in the summer of 2003,the sea ice dynamical characteristics are analyzed and the parameters expressing these characteristics are given. From these parameters,the new findings are:(1)The ice density from investigation is lower than 2-3 tenths compared with that from NOAA Ice Chart,and the ice thickness in the summer is less than 2 m compared with the results invest igated during the First Chinese National Arctic Research Expedition in 1999(CHINARE 1999); (2)The standing deviation of ice bot om fluctuation is 3.8 times of that of the snow surface on the ice sheet and(3)the maxi mum speed of ice floe CHIS7 is 1300 m/h in rotation and oscil ation While the floe moves toward North-east,the rotation angle increases step by step with the maximum of 37.8,and while the floe moves toward South-east,its rotation angle decreases step by step. The oscil ation period of the floe is 12.45 h consistent with that of the inertia current at the same latitude,which shows the contribution of the inertia current to the ice floe movement.
Keywords:Arctic  sea ice  ice concentration  thickness  roughness  rotation
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