Block joint inversion (BJI) of MRS and DC resistivity soundings for aquifer imaging at the north sea island Borkum

Gunther T., Liebau J., AKCA İ., Müller-Petke M.

17th European Meeting of Environmental and Engineering Geophysics, Near Surface 2011, Leicester, İngiltere, 12 - 14 Eylül 2011 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.3997/2214-4609.20144394
  • Basıldığı Şehir: Leicester
  • Basıldığı Ülke: İngiltere
  • Ankara Üniversitesi Adresli: Evet

Özet

We present a joint block inversion of DC resistivity and spectral inversion of magnetic resonance sounding (MRS) data. Coupling is achieved by using identical layer thicknesses. We apply the method to data from the north sea island Borkum and demonstrate that the joint inversion is superior to single inversions. Spectral inversion is necessary and finally allows for distinguishing lithology and salinity. Both deterministic, Gauss-Newton (GN), and stochastic, Genetic Algorithm (GA), approaches yield identical results within the resolution limits.