Analysis Of Antarctic Mass Balance Based On Multi-Source Remoting Sensing Data

The area of Antarctica is 14 million km~2.The Antarctic ice sheet is covered with ice and snow all the year round which stores 88%of the earth’s ice.Global warming will cause the melting of the polar ice sheet,resulting in global sea level rise and bringing great disaster to the coastal city.The mass balance of Antarctic ice sheet estimates its contribution to sea level rise by surface accumulation and ice sheet mass loss.Component method is one of the effective approaches to estimate Antarctic mass balance.In this paper,component method is used to estimate the Antarctic ice sheet material balance which based on multi-source remote sensing data,consisting of the following parts:assessing five existing grounding line products of Antarctic(MOA＿2004、MOA＿2009、In SAR、ICESat、ASAID)through passing through,buffer analysis and distance analysis.Evaluating the various grounding line products in each region and giving suggestions for using each grounding line products.Then,the ice sheet mass balance monitoring method based on input and output components is studied,including ice thickness calculation of ice shelf which mainly based on hydrostatic equilibrium using surface elevation.Furthermore,existing products including ice velocity,surface mass balance which derived from regional climate model and their errors are introduced.Afterwards,we calculated the mass balance of66 glaciers based on ice velocity,ice thickness and MOA＿2009,In SAR grounding line with basin result.The result is similar with previous study.In addition,calculate the mass balance of the whole Antarctic and give result in each basin.In the end,the conclusion of the thesis was presented and future works were discussed.