THE TIANCHI VOLCANIC MUDFLOW IN CHANGBAI MOUNTAINS: Its Distribution and Disaster Research

The Tianchi in Changbai Mountains is an active volcano with the most disastrous eruption dangers in China. Its mudflow is one of the most deadly volcanic hazards. The provenance of mudflow formed by the eruption about 1000 years ago, accumulation mode and distribution characteristics, as well as the causes and scales of volcanic mudflow disaster, are systematically expounded on the basis of various deposits at different distances from the caldera, and the profiles by field survey. A preliminary prediction and division of high and low danger zones of volcanic mudflow disasters are made by analysis on the 1 ka volcanic eruption. The ERDAS software is used to predict the water rushing down disaster caused by volcanic eruption, including the outlet and water flow. This study provides a scientific basis for disaster prevention and mitigation in the region.