Study on the Source of Debris Flow in the Northern Scenic Spot of Changbai Mountain Based on Multi-Source Data

The northern scenic area of Changbai Mountain is a high-incidence debris flow disasters, which seriously threaten the safety tourist’s lives and property. Monitoring providing early warning critical for timely avoidance. change source an effective way to predict flow, can be reflected in settlement deformation study area. offset tracking technique (OT) insensitive coherence SAR images resist decoherence D-InSAR SBSA-InSAR certain extent. It technical means monitoring large gradient deformation. has been widely used field seismic activity, glaciers landslides recent years, but few scholars have applied this flow. In paper, we use OT techniques combination with surveys, Google imagery Sentinel-1 data monitor surface 2017 compare complement results. results show that after mudslide, it better both methods determine rather than one, their own advantages disadvantages yet each other. Finally, predicted development trend mudflows by combining calculated single mudflow solids washout, will help improve long-term capability also enriches application offset-tracking technology geohazard provides new ideas material changes.