4D GPR tracking of water infiltration in fractured high-porosity limestone

Mark Grasmueck, Pierpaolo Marchesini, Gregor P. Eberli, Michael Zeller, Remke L. Van Dam

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

Three thousand liters of water were infiltrated from a 4 m diameter pond to track flow and transport inside fractured carbonates with 20-40 % porosity. Sixteen time-lapse 3D Ground Penetrating Radar (GPR) surveys with repetition intervals between 2 hrs and 5 days monitored the spreading of the water bulb in the subsurface. Based on local travel time shifts between repeated GPR survey pairs, localized changes of volumetric water content can be related to the processes of wetting, saturation and drainage. Deformation bands consisting of thin sub vertical sheets of crushed grains reduce the magnitude of water content changes but enhance flow in sheet parallel direction. This causes an earlier break through across a stratigraphic boundary compared to porous limestone without deformation bands. This experiment shows how time-lapse 3D GPR or 4D GPR can non-invasively track ongoing flow processes in rock-volumes of over 100 m3.

Original languageEnglish (US)
Title of host publicationProceedings of the 13th Internarional Conference on Ground Penetrating Radar, GPR 2010
DOIs
StatePublished - Sep 17 2010
Event13th Internarional Conference on Ground Penetrating Radar, GPR 2010 - Lecce, Italy
Duration: Jun 21 2010Jun 25 2010

Publication series

NameProceedings of the 13th Internarional Conference on Ground Penetrating Radar, GPR 2010

Other

Other13th Internarional Conference on Ground Penetrating Radar, GPR 2010
CountryItaly
CityLecce
Period6/21/106/25/10

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Keywords

  • 4D GPR
  • Flow
  • Fracture
  • Hydrology
  • Infiltration
  • Time-lapse
  • Transport
  • Vadose zone
  • Water content change

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

Cite this

Grasmueck, M., Marchesini, P., Eberli, G. P., Zeller, M., & Van Dam, R. L. (2010). 4D GPR tracking of water infiltration in fractured high-porosity limestone. In Proceedings of the 13th Internarional Conference on Ground Penetrating Radar, GPR 2010 [5550069] (Proceedings of the 13th Internarional Conference on Ground Penetrating Radar, GPR 2010). https://doi.org/10.1109/ICGPR.2010.5550069