July 2023—Topography and bathymetry of the Manuʻa Islands, American Samoa

This reference map depicts the volcanoes in the Manuʻa Islands, American Samoa, the site of seismic unrest between July and September 2022. Marked on the map are the locations of Hawaiian Volcano Observatory GPS and seismometers in the islands. The topography and bathymetry are colored to respectively indicate elevations above sea level (up to 3,179 feet or 969 meters, the top of Lata Mountain) and depths below sea level (only down to -1,148 feet or -350 meters). The bathymetry data are courtesy of the National Oceanic and Atmospheric Administration (NOAA), Maxar/DigitalGlobe, and the University of Hawaiʻi School of Ocean & Earth Science & Technology (SOEST), with coarser resolution at greater depths. A shallow submarine ridge extends to the northwest from Taʻū Island towards Olosega Island; it was along this ridge that a submarine eruption occurred in 1866.