| start date | end date | title | description | icon | date limit | importance |
link | modal |
|---|
| 1913-09-00 | | Trident: 1913 | During the years 1913 to 1919 (the years of the National Geographic Society expeditions to the Katmai National Monument), Trident Volcano was often observed to be "smoking" or "steaming." Eicher and Rounsefell (1957) report a "lighter" eruption in the Katmai area in September, 1913. This eruption may have occurred at Trident.
However, Hildreth (1983) disbelieves this account: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group ... More information | asterisk_yellow.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Trident&eruptionid=486&page=basic | |
| 1949-06-00 | | Trident: 1949 | From Eicher and Rounsefell (1957): "A few weeks later [after May 19, 1949] nearby Mt. Trident erupted, and it has exhibited sporadic activity almost to the present, although without significant ash outfall."
However, Hildreth (1983) disbelieves this account: "Published compilations notwithstanding, there are no credible reports of historic eruptions in the Katmai group except at Novarupta in 1912 and at Trident in 1953 - 1968." | asterisk_yellow.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Trident&eruptionid=487&page=basic | |
| 1950-07-02 | 1950-8-18 | Trident: 1950 | From Decker (1963): "William J. Nancarrow, the Ranger at Brooks River during 1950, mentions 3 explosive eruptions that may have been from Mt. Trident in his monthly reports for July and August, 1950:
"'On July 2 at 2:02 A.M. a side vent of Knife [Griggs] Peak (or something in line with Knife Peak) let go and a cloud of smoke and dust was observed to rise up to 5000 feet.' He also reports seeing a large cloud of smoke and ash rising up behind the west side of Katolinat as viewed from the ... More information | exclamation.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Trident&eruptionid=488&page=basic | |
| 1951-07-07 | | Trident: 1951 | From Decker (1963): "Al Kropf, pilot with the U.S. Fish and Wildlife Service, reports ash eruptions from a fissure on the side of Mt. Trident were taking place during his aerial patrols to the Shelikof Straits in 1951. The aerial photographs (137 + 138 V10 VP-61 7-7-51 2252 21,200 NAE) taken on July 7, 1951, clearly show a radial fissure over 3000 feet long extending down the southwest flank of Mt. Trident. Fume was present from one vent along the fracture centered in a 2000 foot diameter patch ... More information | asterisk_yellow.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Trident&eruptionid=489&page=basic | |
| 1953-02-00 | 1974-00-00 | Trident: 1953 - 1974 | Mount Trident erupted intermittently from 1953-1974. Some (Miller and others, 1998) consider this period as one eruptive event while others (Simkin and Siebert, 1994) break it up into discrete, separate eruptions. Detailed timelines and observations of the eruptive activity at Mt. Trident during this time can be found in Decker, 1963; Ray, 1967, and Ward and Matumoto, 1967. Synder (1954) gives extremely detailed information about events in 1953 and 1954.
Hildreth and others (2003) summarize ... More information | exclamation.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Trident&eruptionid=490&page=basic | |
| 2005-06-00 | | Trident: 2005 | From McGimsey and others (2007): "AVO Coordinating Scientist John Eichelberger was leading an annual student fieldtrip into the Valley of Ten Thousand Smokes (VTTS) in June 2005 when, from the rim of Trident Volcano, he observed a new crater about 50 m (165 ft) in diameter. Eichelberger has traversed the VTTS for many years and verified that the crater was not present during his 2003 trip; clouds prevented viewing the area of the crater in 2004. Although no anomalous seismicity was noted in ... More information | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Trident&eruptionid=600&page=basic | |
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