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4D Physics-Based Pore Pressure Monitoring Using Passive Image Interferometry
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  • Eldert Fokker,
  • Elmer Ruigrok,
  • Rhys Hawkins,
  • Jeannot Trampert
Eldert Fokker
Utrecht University

Corresponding Author:[email protected]

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Elmer Ruigrok
Royal Netherlands Meteorological Institute
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Rhys Hawkins
Utrecht University
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Jeannot Trampert
Utrecht University
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Abstract

This study introduces a technique for four-dimensional pore pressure monitoring using passive image interferometry. Surface-wave velocity changes as a function of frequency are directly linked to depth variations of pore pressure changes through sensitivity kernels. We demonstrate that these kernels can be used to invert time-lapse seismic velocity changes, retrieved with passive image interferometry, for hydrological pore pressure variations as a function of time, depth and region. This new approach is applied in the Groningen region of the Netherlands. We show good recovery of pore pressure variations in the upper 200 m of the subsurface from passive seismic velocity observations. This depth range is primarily limited by the reliable frequency range of the seismic data.
23 Feb 2023Submitted to ESS Open Archive
27 Feb 2023Published in ESS Open Archive
16 Mar 2023Published in Geophysical Research Letters volume 50 issue 5. 10.1029/2022GL101254