Melacak kelurusan sesar dengan metode turunan vertikal kedua data anomali bouguer

Abstract

Telah dilakukan penyelidikan geofisika dengan metode gaya be rat di daerah Batur. Penyelidikan ini dimaksudkan untuk melacak alur sesar yang terdapat di bagian tengah kaldera Batur. . Pengmmpulan data dengan menggunakan Gravimeter Laonsta & Romberg G.928. Alat tersebut berguna untuk men!Kukur varlasi harga g di daerah pen+ litian. ailakukan koreksi pasang dvift, udara bebas. koreksi Bouguer dan topografi diporoleh harga aaothali Bouguer. Yang kemudian dibuat konturnya. Dengan metode turunan vertikal kedua diperoleh :3e:Jar yang dicari. Yang ternyata berarah relit: if tenggara laut ke timur laut. ABSTRACT A geophysical survey using gravity method has been carried out in Batur. This survey had an order to get some information about the straightness of fault. Data collecting in this area was done by using Gravimeter Lacosta & Romberg G.928. Gravimeter was used for .measure gravity variation on earth. A lot of correction was done. With tidal correction, drift correction, free air correction, Bouguer correction and terrait correction we found the value of anomaly Bouguer. Based on these anomaly value a contour map was made. By using second vertical derivative method, straightness of fault were obtained. The straightness of fault is on south-east north-west and turn to north-east.