基于MODIS数据的南极半岛北部冰架表面流速估算（英文）

编号 zgly0001584309

文献类型 期刊论文

文献题名 基于MODIS数据的南极半岛北部冰架表面流速估算（英文）

作者 陈军  柯长青  周小兵  邵珠德  李澜宇 

作者单位 JiangsuProvincialKeyLaboratoryofGeographicInformationScienceandTechnology  NanjingUniversity  KeyLaboratoryforSatelliteMappingTechnologyandApplicationsofStateAdministrationofSurveying  MappingandGeoinformationofChina  NanjingUniver 

母体文献 Journal of Geographical Sciences 

年卷期 2016年02期

年份 2016 

分类号 P343.62 

关键词 surfacevelocities  iceshelf  northernAntarcticPeninsula  MODIS  spatiotemporalvariations 

文摘内容 The ice shelves in the northern Antarctic Peninsula are highly sensitive to variations of temperature and have therefore served as indicators of global warming. In this study,we estimate the velocities of the ice shelves in the northern Antarctic Peninsula using co-registration of optically sensed images and correlation module(COSI-Corr) in the Environment for Visualizing Images(ENVI) based on Moderate Resolution Imaging Spectroradiometer(MODIS) images during 2000–2012,from which we conclude that the ice flow directions generally match the peninsulas pattern and the crevasse,ice flows mainly eastward into the Weddell Sea. The spatial pattern of velocity field exhibits an increasing trend from the western grounding line to the maximum at the middle part of the ice shelf front on Larsen C with a velocity of approximately 700 ma–1,and the velocity field shows relatively higher values in its southerly neighboring ice shelf(e.g. Smith Inlet). Additionally,ice flows are relatively quicker in the outer part of the ice shelf than in the inner parts. Temporal changes in surface velocities show a continuous increase from 2000 to 2012. It is worth noting that,the acceleration rate during 2000–2009 is relatively higher than that during 2009–2012,while the ice movement on the southern Larsen C and Smith Inlet shows a deceleration from 2009 to 2012.