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Ice velocities of the Lambert Glacier from static GPS observations
journal contributionposted on 2023-05-16, 12:30 authored by Rachael HurdRachael Hurd, Richard ColemanRichard Coleman, Morgan, PJ, Matt KingMatt King
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. Copy rightÂ© The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan; The Geodetic Society of Japan; The Japanese Society for Planetary Sciences.
Publication titleEarth Planets and Space
Department/SchoolSchool of Geography, Planning and Spatial Sciences
PublisherTerra Scientific Publishing Co
Place of publicationTokyo, Japan