Cheryl E. Cameron Christopher F. Waythomas 2018 <p>Bogoslof volcano is a submarine volcano in the southern<br>Bering Sea (53.9272°N, 168.0344°W), located 100 kilometers<br>(km) west of Dutch Harbor/Unalaska, and 40 km north<br>of Umnak Island. The volcano has a relatively long history of<br>scientific investigation and several of its historical eruptions<br>have been documented during brief visits to the area since the<br>late 1700s. The purpose of this report is to provide a modern<br>volcanological perspective on past eruptions of Bogoslof and<br>to readdress some of the eruptive phenomena described in<br>historical documents and reports. We also present for the first<br>time a brief analysis of the hazards posed by Bogoslof eruptions.<br>While this report was being prepared, Bogoslof volcano<br>was in an ongoing state of eruptive activity that began in<br>mid-December 2016. Detectable eruptive activity ended in late<br>August 2017 and the volcano has remained quiet since then.<br>Because we have not yet visited Bogoslof Island and have<br>only a few distal tephra samples from two eruptive events,<br>we will not discuss in detail the 2016–17 eruptive sequence,<br>but will provide some information for comparative purposes.<br>When more detailed data has been collected, a more extensive<br>review of the 2016–17 Bogoslof eruption should be the subject<br>of future reports. </p> application/pdf 10.3133/sir20185085 en U.S. Geological Survey Historical eruptions and hazards at Bogoslof volcano, Alaska reports