Bezymianny Update 004

Date: Fri, 13 Oct 95 13:22:04 +0400
From: "S.A.Fedotov" 
Organization: Institute of Volcanology (Kamchatka)

Bezymianny Volcano
55o 58.3'N, 160o 35.2'E

On October 6, at 0500 hrs (local time), seismic and telemetered stations
located in the region of the town of Klyuchi began to record volcanic
tremor, the maximum amplitude of which reached 5-6 microns. At 0825, an
eruptive column appeared over Bezymianny. At 0900, the column was about 8
km high. At 0930, volcanic ash started to fall in the town of Klyuchi.
Volcanic tremor increased up to 1200. Simultaneously ashfall increased.
The most intense ashfall was observed from 1200 to 1500. The amount of
ash, which has fallen in Klyuchi at a distance of 47 km from Bezymianny
over the period of 2 hrs 20 minutes, was 700 grams per square meter. The
air in Klyuchi was highly polluted with volcanic gas. A warning was issued
for the population to take precautions. The Bezymianny eruption may be
hazardous for aviation flights along the eastern coastline of Kamchatka
within 55o3 - 56o6 latitude during a period of 5-7 days.

N.A. Zharinov, Institute of Volcanology, Petropavlovsk-Kamchatsky,
683006, Russia.