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Great Sitkin reported activity

Great Sitkin Links
Reported Activity
start dateend datetitledescriptionicondate limitimportance linkmodal
1760-00-00Great Sitkin: 1760 Grewingk (1850, translated 2003 by Fritz Jaensch) reports that Tolstykh and Baikov reported Mt. Moffet active in 1760. However, Mt. Moffet does not appear to have had any historical eruptions, and perhaps the eruption was from Great Sitkin instead (Hantke, 1951; Simkin and Siebert, 1994; Fournelle and others, 1994; and Waythomas and others, 2003).asterisk_yellow.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=158&page=basic
1767-00-00Great Sitkin: 1767 In Juergen Kienle's files, Lydia Black has translated a portion of Divin (1979). The passage is a synopsis of data from not later than 1774, written by Captain T. I. Shmalev, "From the report of Captain T.I. Shmalev about Russian merchant expeditions and of that of the promyshlenniki to the Kurile and Aleutian Islands about the sea otter enterprise," pages 320-321. Lydia Black's translation is as follows: "There is on the Island of Chetkhina (Great Sitkin) a peak. In 1767 it burned so strongly ... More informationexclamation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=184&page=basic
1784-00-00Great Sitkin: 1784 Grewingk (1850, translated 2003 by Fritz Jaensch) reports that Shelikhov reported Mt. Moffet active in 1784, with hot springs. However, Mt. Moffet does not appear to have had any historical eruptions, and perhaps the eruption was from Great Sitkin instead (Hantke, 1951; Simkin and Siebert, 1994; and Waythomas and others, 2003).asterisk_yellow.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=159&page=basic
1792-05-26Great Sitkin: 1792 Grewingk (1850, translated 2003 by Fritz Jaensch) reports that in 1792 Sarychev said Great Sitkin was "belching fire until the end of May." The English translation of Sarychev makes no mention of this date or Great Sitkin.exclamation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=48&page=basic
1818-07-28Great Sitkin: 1818 Golovnin reports that on June 28, 1818, he could see a high mountain on [Great] Sitkin emitting smoke. It is uncertain if this reference to "smoke" is evidence of an actual volcanic eruption, as Great Sitkin also has prominent fumaroles that are often steaming.asterisk_yellow.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=572&page=basic
1829-00-00Great Sitkin: 1829 Grewingk (1850, translated 2003 by Fritz Jaensch) reported that Ingenstrom reported Great Sitkin as "covered with snow and smoking (?)" in 1829. Other, more recent compilations list this event as possibly starting in 1828, or a separate event occurring in 1828.asterisk_yellow.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=49&page=basic
1904-00-00Great Sitkin: 1904 From Jaggar (1927): Great Sitkin fuming in 1904. Coats (1950): Great Sitkin smoking in 1904.asterisk_yellow.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=50&page=basic
1933-11-30Great Sitkin: 1933 Coats (1950): Minor explosive eruption at Great Sitkin in 1933. Hantke (1951) reports an eruption in Nov. 1933. Numerous newspapers reported an eruption at the end of November, 1933.exclamation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=51&page=basic
1945-03-00Great Sitkin: 1945 From Simons and Mathewson (1947): "Extrusion of the crater dome marks the latest phase of activity. The dome is thought to have formed in March, 1945, at which time a glow was visible at night from Adak Island, and Army aviators noticed clouds of steam rising from the crater. During that month a strong earthquake was felt at Sand Bay." From Coats (1950): lava flow or plug dome, some explosive activity at Great Sitkin in 1945. Robinson (1948) includes a picture of the 1945 lava dome ... More informationexclamation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=52&page=basic
1946-08-141946-8-14Great Sitkin: 1946 From Byers and Brannock (1949): "In the summer of 1946 a column of steam 4000 feet high rose from the crater. According to R. R. Coats (personal communication), who visited the 1945 crater dome in June 1946, steam and strongly pungent gases were escaping from beneath the shattered carapace of the dome. He did not see the orifice of the main large fumarole near the center of the dome because of the great difficulty in traversing the blocky lava. According to Frank S. Simons (personal communication) ... More informationasterisk_yellow.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=53&page=basic
1949-12-301950-1-7Great Sitkin: 1949 - 1950 From Jones (1951): "[S]mall ash showers and fume clouds were seen on December 30, 1949, and January 7, 1950."exclamation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=54&page=basic
1950-11-051950-11-29Great Sitkin: 1950 From Jones (1951): "No fume or ash clouds have appeared from Great Sitkin since the series of eruptions which ended about November 29, 1950. During this eruptive period, which began November 5, 1950, several ash showers and fume were produced. Jones estimated that one ash eruption produced possibly as much as 20,000 cubic meters of ash. Flashes of light were observed several times at night by military personnel on Great Sitkin Island, but they were not seen from Adak."exclamation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=57&page=basic
1951-00-00Great Sitkin: 1951 From Jones (1951): Minor ash showers and fume emissions are known to have occurred during 1951 from Great Sitkin.exclamation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=55&page=basic
1953-05-111953-5-14Great Sitkin: 1953 From MacDonald (1953): "[O]n May 11, 1953, the Coast and Geodetic Survey ship Pioneer observed a spectacular column of steam rising an estimated 5,000 feet above Great Sitkin volcano, in the Aleutian Island. The steam column lasted about an hour. An earthquake felt at Adak on May 12, with an intensity of 5 on the modified Mercalli scale, had its epicenter on a line passing through Great Sitkin. On the afternoon of May 14 a steam cloud was seen to rise about 4,000 feet above the crater rim of ... More informationinformation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=56&page=basic
1974-02-191974-9-00Great Sitkin: 1974 From Associated Press (1974): "A spokesman for the Adak Seismological Observatory, a mere 23 miles away from the volcano, said the eruption was reported at 6:58 p.m. BDT and created 'a perfect mushroom cloud.' He said the clouds arose to at least 10,000 to 12,000 feet within four minutes of the eruption and was colored a dirty white to a light beige." "'It was a very spectacular explosion,' he said, 'but we don't know its type yet. It could be a steam explosion or a genuine volcanic eruption.'" ... More informationexclamation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=58&page=basic
1987-03-181987-3-18Great Sitkin: 1987 From Reeder (1990): "Steve Shivers of the U.S. Geological Survey noted a volcanic eruption plume from the Great Sitkin region on a satellite image from March 18, 1989. Lieutenant Jeffrey Sullivan noted orange flame in the direction of Great Sitkin just before midnight on March 18, 1987. Pilot Guy Morgan, observed minor steam emissions from Great Sitkin just prior to March 18, but such activity is common for Great Sitkin. 'Because no anomalous features could be detected on the Great Sitkin volcano ... More informationasterisk_yellow.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=59&page=basic
2001-02-002001-9-00Great Sitkin: 2001 McGimsey and others (2004) report anomalous seismicity at Great Sitkin during 2001: "Beginning in early February, 2001, seismicity at Great Sitkin volcano began to increase. The activity came to an abrupt end by the end of the month. The next seven months was characterized by short-lived seismic swarms that ended as quickly as they began, most only a day or two in duration. The largest swarm (15 events) occurred on Saturday, August 18, 2001."information.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=525&page=basic
2002-05-272002-5-28Great Sitkin: 2002 This entry is not an eruption, but is a description of unusual earthquake activity at Great Sitkin that may be associated with volcanic events. From 06/02 (BGVN 27:06) : "Abnormal tremor and earthquake swarms in May 2002 On 27 and 28 May the Alaska Volcano Observatory (AVO) detected anomalous seismicity at Great Sitkin, a volcano located 1,895 km SW of Anchorage, Alaska. On 27 May two periods of seismic tremor lasted for 20 and 55 minutes and on 28 May earthquake swarms began at 0306 and ... More informationinformation.pngye50http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Great Sitkin&eruptionid=60&page=basic
Event Dates (18 events)
URL: www.avo.alaska.edu/volcanoes/volcact.php
Page modified: May 23, 2012 16:49
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