Incorporating topography into 2D resistivity modeling by using finite-element and finite difference approaches

ERDOĞAN E., DEMİRCİ İ., Canadansayar M.

13th European Meeting of Environmental and Engineering Geophysics of the Near Surface Geoscience Division of EAGE, Near Surface 2007, İstanbul, Türkiye, 3 - 05 Eylül 2007 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.3997/2214-4609.20146554
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Ankara Üniversitesi Adresli: Evet

Özet

In this study, we examine the topographic effect in two-dimensional dc resistivity forward solution. A new modeling algorithm is developed which is capable of solving Poisson's equation by using finite-difference (FD) and finite-element (FE) approaches. In this algorithm, topography can be incorporated into the model by using three different methods with FE approach and by using two different methods with FD approach. We compared these various methods on different models of surface geometry and resistivity distribution regarding their accuracy and CPU time.