OBSERVATION POINT SPACING EFFECT ON SUBSURFACE STRUCTURE INTERPRETATION FOR MOUNT PANDAN, EAST JAVA

• Main Author: Daniel Andriawan, Raymond
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/46894
• Institution: Institut Teknologi Bandung

Finding out gravitational field anomaly of an observation point against other observation point is one of the goals from geophysical research using gravity method, where the subsurface structure can be obtained. In its measuring, space between the observation points could affect the accuracy of gravity anomaly map, which also affects subsurface structure interpretation quality. However, the denser the observation point also means the more the measurement point and the measuring must be done on the field, which are actually had produced the same subsurface structure as the actual conditions. Therefore, it is studied how much the observation point really affects the quality of the complete Bouguer anomaly map and the subsurface structure model. This research uses the complete Bouguer anomaly data of Mount Pandan, East Java from earlier research. The observation point is being sparsed by removing 52 of 104 complete Bouguer anomaly data from the earlier research. These data will be removed without maintaining the shape of the first anomaly map. And then, Bouguer anomaly map will be made using these data, separate their anomaly, and finally 2.5D forward modelling could be done, so both models from these process could be compared one another