Static GPS measurements and elevation model in the vicinity of the EDML deep-drilling site

doi:doi:10.1594/PANGAEA.611331

Static GPS measurements and elevation model in the vicinity of the EDML deep-drilling site

Interpretation of ice-core records requires accurate knowledge of the past and present surface topography and stress-strain fields. The European Project for Ice Coring in Antarctica (EPICA) drilling site (0.0684° E and 75.0025° S, 2891.7 m) in Dronning Maud Land, Antarctica, is located in the immediate vicinity of a transient and splitting ice divide. A digital elevation model is determined from the combination of kinematic GPS measurements with the GLAS12 data sets from the ICESat satellite. Based on a network of stakes, surveyed with static GPS, the velocity field around the EDML drilling site is calculated. The annual mean velocity magnitude of 12 survey points amounts to 0.74 m/a. Flow directions mainly vary according to their distance from the ice divide. Surface strain rates are determined from a pentagon-shaped stake network with one center point, close to the drilling site. The strain field is characterised by along flow compression, lateral dilatation, and vertical layer thinning.

BibTex:

@dataset{Wesche_Christine_and_Eisen_Olaf_and_Oerter_Hans_and_Schulte_Daniel_and_Steinhage_Daniel_2007,
    abstract = {Interpretation of ice-core records requires accurate knowledge of the past and present surface topography and stress-strain fields. The European Project for Ice Coring in Antarctica (EPICA) drilling site (0.0684° E and 75.0025° S, 2891.7 m) in Dronning Maud Land, Antarctica, is located in the immediate vicinity of a transient and splitting ice divide. A digital elevation model is determined from the combination of kinematic GPS measurements with the GLAS12 data sets from the ICESat satellite. Based on a network of stakes, surveyed with static GPS, the velocity field around the EDML drilling site is calculated. The annual mean velocity magnitude of 12 survey points amounts to 0.74 m/a. Flow directions mainly vary according to their distance from the ice divide. Surface strain rates are determined from a pentagon-shaped stake network with one center point, close to the drilling site. The strain field is characterised by along flow compression, lateral dilatation, and vertical layer thinning.},
    author = {Wesche, Christine and Eisen, Olaf and Oerter, Hans and Schulte, Daniel and Steinhage, Daniel},
    doi = {10.1594/PANGAEA.611331},
    institution = {PANGAEA (Land Surface)},
    title = {Static GPS measurements and elevation model in the vicinity of the EDML deep-drilling site},
    url = {https://service.tib.eu/ldmservice/vdataset/png-doi-10-1594-pangaea-611331},
    year = {2007}
}