Satellite Data Reveals Warning Signs Before Anak Krakatau Tsunami Disaster
A new study has revealed that Indonesia’s Anak Krakatau volcano, which collapsed in a devastating 2018 eruption and triggered a deadly tsunami, had been slipping for years showing warning signs that could have been detected in advance. Researchers at Penn State analyzed satellite data and found that the mountainside had been slowly shifting before its collapse, offering valuable insight into predicting similar disasters in the future.
Published in Geophysical Research Letters, the study used a technique called Interferometric Synthetic Aperture Radar (InSAR) to track surface deformation over a 12-year period. The analysis showed that the detachment fault beneath Anak Krakatau experienced approximately 15 meters (50 feet) of movement from 2006 to 2018, with notable acceleration just befo...









