The influence of multi-annual signals on uplift determination using GPS

• Main Authors: Khan, Shfaqat Abbas, Wahr, J.
• Format: Conference Object
• Language: English
• Published: 2005
• Subjects: Greenland; Kangerlussuaq; Kulusuk; Qaqortoq; Scoresbysund; Thule
• Online Access: https://orbit.dtu.dk/en/publications/fbe03b56-0e5a-48a8-b166-cb08e8f96905; http://adsabs.harvard.edu/abs/2005AGUFM.G21B1272K

The Danish national space center (DNSC) is responsible for the geodetic definition of the reference network in Greenland. Permanent GPS plays an important role in the monitoring and maintenance of the geodetic network. Furthermore, DNSC supports the international GPS infrastructure and research by supporting IGS. In October 1998 KMS has established a permanent GPS station THU2 at Thule Airbase. Besides THU2 the old permanent station THU1 is also running. The Thule stations are important because they are two of the few northernmost stations in the IGS network. THU2 has been operating since March 1999, and it is now a high quality and high performance station contributing to the IGS Low-Earth Orbiters (LEO) network. Besides the GPS stations in Thule, KMS is also running a permanent GPS station SCOB in Scoresbysund, which was established in August 1997, and in October 2001 a permanent station QAQ1 was established in Qaqortoq. This station is registered at IGS. Furthermore, University of Colorado operates the IGS station Kellyville near Kangerlussuaq and a station in Kulusuk. Data from these stations are used to detect glacial isostatic adjustment (GIA) induced surface displacements. Furthermore, the influence of multi-annual signals in the GPS time series on determination of GIA surface displacements is analysed.