ANALYSIS MAGNETIC ANOMALY AROUND THE PAPANDAYAN VOLCANO USING MAGNETIC METHOD (THE EASTERN SLOPE AREA OF PAPANDAYAN VOLCANO).

• Main Author: Anwar Ra'if, Kurnia
• Format: Final Project
• Language: Indonesia
• Subjects: Fisika
• Online Access: https://digilib.itb.ac.id/gdl/view/47641
• Institution: Institut Teknologi Bandung

Indonesia has active and passive volacano which are disseminated in territory of Sumatera and Java. A surround area in active volcano is often to appear the surface manifestation like a hot spring that can be use for dirrectly and undirrectly. One of many active volcano in West Java is Papandayan Volcano. Papandayan Volcano is an active volcano in Indonesia which is location in Garut, West Java. Papandayan Volcano have many caldera in that mountain which are Baru Caldera, Mas Caldera, Nangklak Caldera, and Manuk Caldera. For analyze the distribution of heat source in Papandayan Volcano can do by geophysical survey. Geophysical survey is an activities as a part of Earth Physic for identification the under surface structure. The survey use magnetic method which is using magnetic suseptibility as a physical parameter for knowing magnetic anomaly. The field data acquisition have 65 points measurement with 100 meters spacing for every point and the length of trajectory is six kilometers. The field data acquisition get in 2019 in surround area of Papandayan Volcano using set tools of G-856AX Memory MagTM Proton Precession Magnetometer (PPM). Based on observing directly, there are the hot spring around the river area. The result of forward modelling and inversion modelling have negative anomaly around the caldera and river area. The hypothesis from modelling, there is magmatic intrusion on the caldera and around the river area from high temperature because of volcano system under the subsurface.