利用GPS的北极冰川运动监测与分析

Surface Movement Research of Arctic Glaciers Using GPS Method

摘要: 分析了2005～2010年的6期GPS观测数据,获取了冰川表面监测标杆的年均运动速度。结果表明,两条冰川物质平衡当前均处于负平衡状态。结合该地区1936年测量的冰面高程数据,对73a以来冰川总体物质平衡情况进行了比较分析,认为两条冰川当前处于加速消融的状态。

Abstract: We introduce GPS tracking station and the field GPS work in summer from 2005 to 2010,and give the yearly horizontal and vertical velocities on the surface of the two glaciers,which indicates that the horizontal velocity is from 5.277～8.256 m·a-1 on glacier Pedersenbreen,and from 0.360～3.986 m/a on glacier Austre Lovénbreen.The velocity of surface altitude change is from-3.4～-71.8 cm/a on glacier Pedersenbreen and from +9.6～-115.8 cm/a on glacier Austre Lovénbreen.It shows that the mass balance in two glaciers is negative,and the two glaciers are increasingly melting.