Seismic Profile of Bali and Lombok
Bali and Lombok are two major tourist islands in Indonesia but have different disaster risk profiles. Bali is located above a transform (strike-slip) fault zone, experiencing periodic earthquakes with moderate magnitudes (5.0-6.5), but tsunami risk is relatively low. Bali's earthquake history shows long intervals between major earthquakes, with the last significant earthquake in 1917.
Lombok, by contrast, is located in an active subduction zone and experiences more intense seismic activity. The 2018 Lombok earthquake with magnitude 7.0 killed dozens and damaged thousands of homes. The island faces higher tsunami risk due to its position in a subduction zone.
Both islands also have volcanic risk. Mount Agung in Bali last erupted in 1963, while Mount Rinjani in Lombok last erupted in 1994. From a tourism and property investment perspective, Lombok presents a slightly higher risk profile than Bali, although both islands must maintain high preparedness for natural disasters.