Publications des scientifiques de l'IRD

Legchenko Anatoli, Miege C., Koenig L. S., Forster R. R., Miller O., Solomon D. K., Schmerr N., Montgomery L., Ligtenberg S., Brucker L. (2018). Investigating a firn aquifer near Helheim Glacier (South-Eastern Greenland) with magnetic resonance soundings and ground-penetrating radar. Near Surface Geophysics, 16 (4), p. 411-422. ISSN 1569-4445.

Titre du document
Investigating a firn aquifer near Helheim Glacier (South-Eastern Greenland) with magnetic resonance soundings and ground-penetrating radar
Année de publication
2018
Type de document
Article référencé dans le Web of Science WOS:000448978300003
Auteurs
Legchenko Anatoli, Miege C., Koenig L. S., Forster R. R., Miller O., Solomon D. K., Schmerr N., Montgomery L., Ligtenberg S., Brucker L.
Source
Near Surface Geophysics, 2018, 16 (4), p. 411-422 ISSN 1569-4445
We apply the magnetic resonance sounding (MRS) method to investigate a firn aquifer in the south-east region of the Greenland ice sheet. Our study aims to delineate and estimate the volume of the recently discovered water stored within the firn (compacted snow) that remains liquid throughout the year. We develop and test successfully a methodology for joint use of MRS and ground-penetrating radar (GPR). This non-invasive geophysical approach is particularly well-adapted to glacier conditions and has a promising future for in situ investigation of water distribution in glaciers. At our field site, MRS showed an aquifer located at variable depths between 20 and 30 m beneath the ice-sheet surface. At the monitoring site, both MRS and GPR show an increase in the water volume stored between April 2015 and July 2016. MRS estimates suggest that the volume increased by approximately 28%.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Hydrologie [062] ; Télédétection [126]
Description Géographique
GROENLAND ; HELHEIM GLACIER
Localisation
Fonds IRD [F B010074354]
Identifiant IRD
fdi:010074354
Contact