Volcano news: Karymsky
Karymsky Volcano Volcanic Ash Advisory: VA AT 20190219/2330Z FL100 EXTD NE REPORTED OBS VA DTG: 19/2320Z
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:
FVFE01 at 23:50 UTC, 19/02/19 from RJTD
VA ADVISORY
DTG: 20190219/2350Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2019/26
INFO SOURCE: HIMAWARI-8 UHPP
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA AT 20190219/2330Z FL100 EXTD NE REPORTED
OBS VA DTG: 19/2320Z
OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FL100 230/6KT
FCST VA CLD +6 HR: NOT AVBL
FCST VA CLD +12 HR: NOT AVBL
FCST VA CLD +18 HR: NOT AVBL
RMK: VA OF PREVIOUS VAA[FL150] HAS DISSIPATED IN SATELLITE IMAGERY.
NEW VA REPORTED. WE WILL ISSUE FURTHER ADVISORY IF VA IS
DETECTED IN SATELLITE IMAGERY.
NXT ADVISORY: NO FURTHER ADVISORIES=
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Background:
Karymsky, the most active volcano of Kamchatka's eastern volcanic zone, is a symmetrical stratovolcano constructed within a 5-km-wide caldera that formed during the early Holocene. The caldera cuts the south side of the Pleistocene Dvor volcano and is located outside the north margin of the large mid-Pleistocene Polovinka caldera, which contains the smaller Akademia Nauk and Odnoboky calderas.
Most seismicity preceding Karymsky eruptions originated beneath Akademia Nauk caldera, which is located immediately south of Karymsky volcano. The caldera enclosing Karymsky volcano formed about 7600-7700 radiocarbon years ago; construction of the Karymsky stratovolcano began about 2000 years later. The latest eruptive period began about 500 years ago, following a 2300-year quiescence. Much of the cone is mantled by lava flows less than 200 years old. Historical eruptions have been vulcanian or vulcanian-strombolian with moderate explosive activity and occasional lava flows from the summit crater.
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Source: GVP, Smithsonian Institution
