Hydroacoustic detection of submarine landslides on Kilauea volcano

Landslides produced at the site where lava flows into the ocean at Kilauea volcano have been detected hydroacoustically;. Up to 10 landslides per day were detected by a hydrophone on the Hawaii Undersea Gee-Observatory (HUGO) , located 50 km south of the entry site. The largest of these landslides, p artly subaerial events known as bench collapses! were detected by a network of hydrophones in the eastern Pacific, 5000-7000 km away from the source. The landslides display a characteristic spectra signature easily recognizab le among other signals such as earthquake T-phases and anthropogenic noises . The fact that signals are detected at great distances suggests that hydro acoustic detection of landslides could he a powerful tool in tsunami monito ring and modeling efforts.