L'île de Bogosloff, le 10 janvier 2017
Dan Leary (Maritime Helicopters) and Christopher Waythomas (U.S. Geological Survey)
US Government : <a rel="nofollow" class="external free" href="https://www.usgs.gov/news/monitoring-alaska-s-remote-and-restless-bogoslof-volcano">https://www.usgs.gov/news/monitoring-alaska-s-remote-and-restless-bogoslof-volcano</a>