Two Volcanic Tsunami Events Caused by Trapdoor Faulting at a Submerged Caldera Near Curtis and Cheeseman Islands in the Kermadec Arc

• Published in: Geophysical research letters Vol. 50; no. 7
• Main Authors: Sandanbata, Osamu, Watada, Shingo, Satake, Kenji, Kanamori, Hiroo, Rivera, Luis
• Format: Journal Article
• Language: English
• Published: Washington John Wiley & Sons, Inc 16.04.2023; Wiley
• Subjects: caldera; Calderas; Deformation; Earthquakes; Gauges; Geological faults; Ground motion; Islands; Lava; Magma; Overpressure; P-waves; Reservoirs; resurgence; Scaling; Seismic activity; Seismic data; Seismic waves; Seismological data; submarine volcano; Tide gauges; tsunami; Tsunami hazard; Tsunamis; Volcanic activity; volcanic earthquake; Volcanic islands; volcanic tsunami; Wave height; Waveform analysis; Waveforms; Weather hazards

Two submarine earthquakes (Mw 5.8) occurred near volcanic islands, Curtis and Cheeseman, in the Kermadec Arc in 2009 and 2017. Following both earthquakes, similar tsunamis with wave heights of about a meter, larger than expected from their moderate seismic magnitudes, were observed by coastal tide g...