THE COMPATIBILITY OF INVERSION 1D AND 2D APPLICATION SOFTWARE TO IDENTIFY ANDESITE USING DIPOLE-DIPOLE ARRAY OF RESISTIVITY METHOD

• Main Author: TRI DANU BARANTI (NIM : 22107006), IGNATIUS
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/20182
• Institution: Institut Teknologi Bandung

The electrical resistivity method in general is carried out with two types of field procedure : one dimensional (1D) and two dimensional (2D) measurement. Resistivity sounding is used to determine the distribution of resistivity value varies with depth. Computer inversion programs to process and interpret resistivity data are widespread these days, but many of these are not give the same result. This topic became a main problem for interpreter. The result of resistivity interpretation survey with dipole dipole array by using 1D and 2D inversion program gives the different value. This problem is occurred because of the one dimensional (1D) inversion program, namely DcInv, modeled the earth as horizontal layer. Because of the earth is assumed as horizontal layer, then the calculation of every dipole separation factor (n) changing only represented by one resistivity value. With the result, that resistivity value in lateral changes should be calculated in average value. If the contrast of apparent resistivity value in lateral changes is great, there is possibility that the <br /> <br /> <br /> interpretation give bad result. One dimensional (1D) inversion program is suitable for modeling the horizontal layer and massive mineral deposit. Two dimensional (2D) inversion program is suitable for modeling the variation of resistivity value in lateral changes and the area with various topography.