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Trident reported activity



Event Name : Trident 1950/7

Start:July 2, 1950 Observed
Stop:August 18, 1950 Observed

Tephrafall: BibCard
Tephra plume: BibCard
Eruption Type:Explosive
MaxVEI: 2 BibCard

Description: 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 Fish and Wildlife Camp on Brooks Lake on August 1, and a cloud of dust from the Valley on August 16 to 18 which cut the visibility to 2 miles and left a very thin layer of ash which 'penetrated to all corners.'" This eruption has been attributed to Trident by Simkin and Siebert (1994).

The Sitka Sentinel mentions in their July 11, 1950 edition that "a new volcano was born last week in the white snows of Knife [Griggs] Mountain near the famed 'Valley of Ten Thousand Smokes.' It was first reported July 2 by a group of fishermen."

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."

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Page modified: March 30, 2017 14:36
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