A different method for interpretation of magnetic anomalies due to 2-D dipping dikes


Kara I., Bal O. , Tekkeli A. B. , Karcioglu G.

ACTA GEOPHYSICA, cilt.65, sa.1, ss.237-242, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 65 Konu: 1
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/s11600-017-0019-8
  • Dergi Adı: ACTA GEOPHYSICA
  • Sayfa Sayıları: ss.237-242

Özet

In this study a new method is presented to determine model parameters from magnetic anomalies caused by dipping dikes. The proposed method is applied by employing only the even component of the anomaly. First, the maximum of the even component is divided to its value at any distance x in order to obtain S1. Then, theoretical even component values are computed for the minimal depth (h) and half-width (b) values. S2 is obtained by dividing their maximum to the value computed for the same distance x. A set of S2 values is calculated by slowly increasing the half-width, and h and b for the S2 closest to S1 are determined. The same procedure is repeated by increasing the depth. The determined b values are plotted against the corresponding values of h. After repeating the process and plotting curves for different distances, it is possible to determine the actual depth and half-width values.

In this study a new method is presented to determine model parameters from magnetic anomalies caused by dipping dikes. The proposed method is applied by employing only the even component of the anomaly. First, the maximum of the even component is divided to its value at any distance x in order to obtain S1. Then, theoretical even component values are computed for the minimal depth (h) and half-width (b) values. S2 is obtained by dividing their maximum to the value computed for the same distance xA set of S2 values is calculated by slowly increasing the half-width, and h and b for the S2 closest to S1 are determined. The same procedure is repeated by increasing the depth. The determined b values are plotted against the corresponding values of h. After repeating the process and plotting curves for different distances, it is possible to determine the actual depth and half-width values.