Recent alert level of Agung volcano(Bali, Indonesia)

Indonesia’s island chain is the most active " fire chain” in the Southwest Pacific, and the number of inhabitants in this volcanic area is the highest in the world. The Agung volcano is one of the most active volcanoes in this " fire chain”. The eruption recurrence period of Agung volcano is about 50 years and its last eruption was in 1963 AD （55 years ago）. From August 2017, volcanic earthquakes occurred more frequently which indicates the resumption of eruption. In September, the volcano alert level rose to level Ⅲ. In October, the ash plume began to rise. In November, ash plume rose rapidly to 4 kilometers and the magma began to become active. The alert level rose to the highest level （Level Ⅳ）. This article collects and analyzes the local real-time monitoring data of the Agung volcano, and shows the monitor status, deformation, geochemistry and remote sensing images of volcanic earthquakes since the Agung volcano became activity.