中文摘要：

北极夏天海冰的单轴的压缩力量上的结果基于在 2012 在第五中国国家北极研究远征期间收集的样品(CHINARE-2012 ) 被介绍。试验性的研究在不同严峻的温度被执行( 3 ， 6 和 9 癥瑡潩?湡?畣牲湥?慤慴?桔?業晳瑩漠??楴慤?汥癥瑡潩?慨??敲慬楴敶猠慴摮牡?牥潲?景??┶愠摮??┷映牯?′湡??琠摩?潣灭湯湥獴?桔?畣牲湥?慶楬慤楴湯猠潨獷愠朠潯?慭'?楷桴愠?癡牥条?牥潲?景ㄠ‰浣猯愠摮?牯?椠?桴????硥散瑰琠敨爠来潩?牦浯ㄠ琵猠'T潰異慬楴湯挠汥獬?瑉眠獡挠湯汣摵摥琠慨?档浥瑯敨慲祰攠牮捩敨?桴??????汣獡?愢瀭畬?汰獵??猯灵??? O

英文摘要：

The results on the uniaxial compressive strength of Arctic summer sea ice are presented based on the sam- ples collected during the fifth Chinese National Arctic Research Expedition in 2012 （CHINARE-2012）. Exper- imental studies were carried out at different testing temperatures （-3, -6 and -9℃）, and vertical samples were loaded at stress rates ranging from 0.001 to 1 MPa/s. The temperature, density, and salinity of the ice were measured to calculate the total porosity of the ice. In order to study the effects of the total porosity and the density on the uniaxial compressive strength, the measured strengths for a narrow range of stress rates from 0.01 to 0.03 MPa/s were analyzed. The results show that the uniaxial compressive strength decreases linearly with increasing total porosity, and when the density was lower than 0.86 g/cm3, the uniaxial com- pressive strength increases in a power-law manner with density. The uniaxial compressive behavior of the Arctic summer sea ice is sensitive to the loading rate, and the peak uniaxial compressive strength is reached in the brittle-ductile transition range. The dependence of the strength on the temperature shows that the calculated average strength in the brittle-ductile transition range, which was considered as the peak uniaxial compressive strength, increases steadily in the temperature range from -3 to -9℃.