Bogoslof - Historic eruptions

Reported Activity

start date	end date	title	description	icon	date limit	importance	link
1796-05-18	1804-00-00	Bogoslof: 1796 - 1804	From Miller and others (1998): "A small rocky prominence, called Ship Island or Ship Rock, was observed in 1768 by Russian explorers at the approximate site of Bogoslof Island; it disappeared through marine erosion by the end of the 19th century and little is known concerning its composition and origin (Byers, 1959). An explosive eruption of debris in 1796, followed by extrusion of viscous lava, built a second island by 1804, about 0.6 km south of Ship Rock. The second island was known successively ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=112&page=basic
1806-00-00	1823-00-00	Bogoslof: 1806 - 1823	Dall (1884) writes: "In 1806 fissures appeared, lined with crystals of sulphur. According to Langsdorff, who saw it in this year, it did not exhibit any special activity, though steam and smoke arose more or less constantly. In this year three baidarkas visited the island. On the north side soft lava flowed into the sea, and it was too hot to approach closely; but on the southern end a landing was effected. The peak was too sharp and rugged to be ascended, and the rock was very hot. A piece ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=113&page=basic
1883-08-17	1895-00-00	Bogoslof: 1883 - 1895	The first indicator of this eruption was from residents of Unalaska, who first noticed steam rising from the ocean somewhat north of Ship Rock in 1882 (Merriam, 1901). In the fall of 1883, the eruption of Bogoslof was evident. The new island created by this eruption was called New Bogoslof or Grewingk, and is now called Fire Island (Miller and others, 1998). Miller and others summarizes as follows: "In 1884 the cone (presumably the dome was destroyed) had a diameter of 1 km, a craggy profile, ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=114&page=basic
1906-03-00	1907-1-00	Bogoslof: 1906 - 1907	The Smithsonian Volcanoes of the World book and the Global Volcanism Program online database considers the time period between March, 1906, and September, 1907, to be one eruption at Bogoslof. However, the GeoDIVA database has separated the formation and destruction of Metcalf Cone (March, 1906-January, 1907) as one eruption, and the formation and destruction of McCulloch Peak (January 1907-September 1907) is treated as a separate eruption. From Miller and others, 1998: "In 1906, a dome bearing ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=115&page=basic
1907-01-00	1907-9-1	Bogoslof: 1907	The Smithsonian Volcanoes of the World book and Global Volcanism Program online database considers the time period between March, 1906, and September, 1907, to be one eruption at Bogoslof. However, the GeoDIVA database considers the formation and destruction of Metcalf Cone (March, 1906-January, 1907) one eruption, and the formation and destruction of McCulloch Peak (January 1907-September 1907) is treated as a separate eruption. Miller and others (1998) summarizes this eruption, which began ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=116&page=basic
1908-01-00		Bogoslof: 1908	In July, 1908, observers on the vessel McCulloch reported that Metcalf Cone of the Bogoslof Islands was completely gone (Jaggar, 1930). This observation suggests that there was an explosive eruption during the winter of 1907-08. Possible evidence of this eruption was witnessed by observers on the Albatross early in the year of 1908. From Hunnicutt (1943): "The crew of the U.S.S. Albatross in 1908, while traveling off the islands, witnessed an uprising of a subterranean volcano which doubtless ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=117&page=basic
1909-09-00	1910-9-19	Bogoslof: 1909 - 1910	Miller and others (1998) summarizes the September 1909-1910 eruption of Bogoslof as follows: "Yet another conical islet, Tahoma Peak, was formed during the winter of 1909-1910 in the bay created by the destruction of McCulloch Peak. Explosions in September of 1910 produced a deep crater at its summit (Byers, 1959); this was apparently the first documented crater in a Bogoslof dome (Jaggar, 1930)." Powers (1916) relates the following detailed information: "Renewed activity in the bay between ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=118&page=basic
1913-07-00		Bogoslof: 1913	Powers (1916) gives the following information on this eruption: "[I]n July, 1913, a brief statement refers to the crater [of Tahoma Peak] as being plainly visible with steam and smoke slowly issuing from it. Activity apparently ceased during this year, for the commanding officer of the steamer Patterson, which passed Bogoslof on its way to pick up survivors of the Tahoma [The Tahoma struck a reef on the 20th of September, 1914], reports that 'the Bogoslof Islands showed three peaks in 1914, none ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=119&page=basic
1926-07-17	1928-6-00	Bogoslof: 1926 - 1928	Miller and others (1998) summarizes this eruption: "Renewed submarine explosions between the two islands [Castle Rock and Fire Island] in 1926 produced another conical dome by early 1927. A tephra ring, located about 3 m above high tide, surrounded the new dome and connected it to Fire Island and Castle Rock, thus forming a single elongate island. By July, 1927, the circular dome was 60 m high and 300 m across and was circled by a shallow lagoon of warm water." Jaggar (1930) records the ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=120&page=basic
1931-10-31		Bogoslof: 1931	Jaggar (1932) reports: ""Captain Nelson saw fire issuing from Bogoslof October 31, 1931, and found quantities of pumice near Umnak Island south of it. This observer believed Bogoslof to be continually smoking, according to his experience, but the 'fire' was unusual." In 1934, further mention is made of Bogoslof. Hunnicutt (1943) reports that "In 1934 Bogosloff was visited by a scientific party form the Coast Guard vessel Chelan. When the men went on shore they feared the island would explode ... More information	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=121&page=basic
1951-09-21		Bogoslof: 1951	Jones (1952) describes this possible eruption as follows: "Lieutenant Sinclair, of the ship TAKL 36, reported running through muddy water for 2 miles 3.7 miles off the coast of Bogoslof on September 21 [1951]. G.R. MacCarthy visited Bogoslof early in November and reported that there were no signs of activity for many years past." This muddy water could be evidence of an eruption or submarine landslide at Bogoslof (Byers, 1959).	asterisk_yellow.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=122&page=basic
1992-07-06	1992-7-24	Bogoslof: 1992	McGimsey and others (1995) summarize this eruption as follows: "The recent eruption began in early July, 1992. At about 3:00 pm ADT on July 6, an eruption cloud rising to 3 km above Bogoslof Island was identified on NOAA satellite imagery. A few hours later pilots visually confirmed the steam and ash plume. "Satellite imagery showed intermittent small plumes through July 13. Continuous emission occurred during the next two days with the steam and ash plume rising up to 5.5 km and extending ... More information	exclamation.png	ye	50	http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Bogoslof&eruptionid=123&page=basic