Ice velocities of the Lambert Glacier from static GPS observations

被引：50

作者：

Manson, R

Coleman, R

Morgan, P

King, M

机构：

[1] Univ Tasmania, Ctr Spatial Informat Sci, Hobart, Tas 7001, Australia

[2] CSIRO, Hobart, Tas 7001, Australia

[3] Univ Canberra, Sch Comp, Belconnen, ACT 2616, Australia

来源：

EARTH PLANETS AND SPACE | 2000年 / 52卷 / 11期

关键词：

Global Position System; Global Position System Data; Cycle Slip; Outlet Glacier; Global Position System Site;

D O I：

10.1186/BF03352326

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Between 1988 and 1995, five seasons of Global Positioning System (GPS) data were collected at seventy-three locations near the 2500 metre contour of the Lambert Glacier Drainage Basin (LGB). These data have been processed using GAMIT/GlobK software to determine surface velocities at the surveyed sites. Results show that velocities along the traverse route vary between 0.5 ma(-1) and 63 ma(-1) with the location of the major outlet glaciers inside the LGB clearly identifiable within the data. A subset of the LGB GPS data has been studied to investigate an efficient method for determination of ice velocities at remote sites within a single field season. Results from this study have shown that ice velocities within 2% of the long-term estimate may be determined using two to four hour GPS site occupations separated in time by a minimum of forty days.

引用

页码：1031 / 1036

页数：6