Comparison of Bogoslof Island, 1998 to 2017 showing changes in the configuration of the island as a result of the ongoing 2016-17 eruption. Points A-D are the same in both photos. Direction of view is toward the north-northwest. Distance from A-C about 820 m (0.51 mi). Zone of upwelling and likely location of the active vent in center left of open embayment. 1998 photo courtesy of John Seese, National Marine Fisheries/NOAA. 2017 photo courtesy of Dan Leary, Maritime Helicopters.
Image courtesy of AVO/USGS.
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