CAJ | 학술논문

利用卫星海冰密集度资料和船基海冰走航观测数据分析了2012年12月至2013年3月南极罗斯海海冰密集度、厚度和浮冰尺寸等参数的时空变化特征。12月下旬罗斯海西侧浮冰区南北向宽约1000 km，沿雪龙船航线平均密集度在5成以上，平均海冰厚度为100 cm，平均冰上积雪厚度为16 cm，高密集度区域主要为尺寸较小的块浮冰（2-20 m）和小浮冰（20-100 m），低密集度区域主要为大尺寸浮冰（500-2000 m）。1月和2月罗斯海大部分海域无海冰覆盖，3月海冰迅速冻结，下旬即覆盖整个罗斯海。 SSMIS和AMSR2两种卫星遥感数据均能较好反映航线上的真实海冰密集度状况，AMSR2产品与观测符合更好。与1978-2012的气候平均值相比，观测区在2012年夏季冰情偏重。本文的分析结果可帮助我们了解罗斯海海冰的时空特征，为中国后续罗斯海科考提供参考。
이용위성해빙밀집도자료화선기해빙주항관측수거분석료2012년12월지2013년3월남겁라사해해빙밀집도、후도화부빙척촌등삼수적시공변화특정。12월하순라사해서측부빙구남북향관약1000 km，연설룡선항선평균밀집도재5성이상，평균해빙후도위100 cm，평균빙상적설후도위16 cm，고밀집도구역주요위척촌교소적괴부빙（2-20 m）화소부빙（20-100 m），저밀집도구역주요위대척촌부빙（500-2000 m）。1월화2월라사해대부분해역무해빙복개，3월해빙신속동결，하순즉복개정개라사해。 SSMIS화AMSR2량충위성요감수거균능교호반영항선상적진실해빙밀집도상황，AMSR2산품여관측부합경호。여1978-2012적기후평균치상비，관측구재2012년하계빙정편중。본문적분석결과가방조아문료해라사해해빙적시공특정，위중국후속라사해과고제공삼고。
We analyzed the distribution of sea ice in the Ross Sea during the austral summer of 2012 .Parameters inclu-ding sea ice concentration, thickness, and floe size were investigated using satellite data and ship-based observa-tions.In late December sea ice extent was about 1 000 km from north to south , average sea ice concentration was greater than 50%, average sea ice thickness was about 100 cm, and average snow depth was about 16 cm.In areas of high ice concentration, ice cakes (2-20 m) and small floes (20-100 m) predominated, while in areas of low ice concentration medium floes (100-500 m) and big floes (500-2000 m) predominated.Most of the waters were ice-free in January and February , but in March sea ice grew rapidly and by April the entire Ross Sea was cov-ered with ice .Sea ice concentrations derived from AMSR 2 and SSMIS were in accordance with the field observa-tions in most locations , with deviations of 15%and 20%, respectively .Therefore , AMSR2 performed better .The results of this paper provide a good reference for future CHINARE Ross Sea cruises .