2024 Pedersen Lagoon Landslide Seismic Signals

Seismic signals from the August 7, 2024 Pedersen Lagoon (Alaska) tsunamigenic landslide recorded on seismic station AK.SWD, located approximately 30 km from the landslide location. Three directions of ground motion are shown. The landslide signal is followed by a long-duration, resonating signal characteristic of a seiche in the lagoon. AK.SWD is part of the Alaska Geophysical Network, which is operated by the Alaska Earthquake Center at the University of Alaska Fairbanks.