Tag

Active Faults

All articles tagged with #active faults

natural-disasters2 years ago

"Long-Dormant Faults Trigger Ishikawa Earthquake, Hampering Recovery Efforts in Japan"

Japanese experts have determined that the magnitude 7.6 earthquake that struck Ishikawa Prefecture's Noto Peninsula on New Year’s Day was caused by the movement of active faults in the sea that had been dormant for 3,000 to 4,000 years, resulting in a tsunami. The slipping of a belt of active faults on the Noto Peninsula and the Sea of Japan explained the seismic intensity and the tsunami, with a group of faults stretching over 100 kilometers.

science-and-environment2 years ago

Unveiling Yellowstone's Hidden Active Faults with Laser Scans

Lidar technology has revealed a network of active faults in the northern region of Yellowstone National Park, posing earthquake threats to nearby communities. Lidar, a remote sensing technique, uses laser sensors to detect concealed features on the ground. The surveys conducted in 2020 uncovered fault scarps and breaks in the ground, indicating past earthquakes of magnitude-6.5 or greater. The data will help geologists analyze the faults and assess future risks. Lidar technology also offers insights into the link between seismic events, geothermal activity, and volcanic activity in Yellowstone.