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Pavlof Sister reported activity



Event Name : Pavlof Sister 1762

This is a questionable event.

Start: 1762 Observed
Stop: 1786 Observed

Active; type of activity not specified: BibCard BibCard BibCard
Tephra plume: BibCard
Eruption Type:Explosive
Duration: About 14 years BibCard

Description: Grewingk (1850) writes that promyshlenniks reported Pavlovskii Volcano active from 1762-1786, and that "one of the craters closed up" in 1786.

Veniaminov (1840, translated by Lydia T. Black and R.H. Geoghegan, 1984) reports: "Before 1786 the northern, or interior, half burned. In 1786, following an eruption, at the time of a severe earthquake and tremendous thunder, its upper part collapsed; at the same time the crater opened in the southern or shore-ward half, whence smoke is emitted to this day."

Coats (1950) attributes this eruption to Pavlof Sister, which is slightly north of Pavlof. Kennedy and Waldron (1955) list this eruption under Pavlof, but state that any of the eruptions currently attributed to Pavlof may be from Pavlof Sister instead. McNutt (1985) also suggests that this eruption may be from Pavlof Sister.

Sarychev (translated from Russian in 1806 and 1807, republished 1969) describes this eruption as follows: "the lofty volcanic mountain on the shore of Alaksa, opposite to the island Unatchoch, the summit of which was torn off and hurled down with a tremendous crash, in an eruption in the year 1786."

Based on Sapper's classification scheme, Siebert and Simkin (2002-) list a tephra volume of greater than 5.5 +/- 5.0 x 10^8 cubic meters.

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Page modified: March 30, 2017 14:36
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