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Karymsky Volcano Volcanic Ash Advisory: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY OBS VA DTG: 23/0520Z to 6000 ft (1800 m)

Fri, 23 Oct 2020, 06:15
06:15 AM | BY: VN
Satellite image of Karymsky volcano on 23 Oct 2020
Satellite image of Karymsky volcano on 23 Oct 2020
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 and is moving at 15 kts in SE direction.
The full report is as follows:

FVFE01 at 05:58 UTC, 23/10/20 from RJTD
VA ADVISORY
DTG: 20201023/0558Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2020/83
INFO SOURCE: HIMAWARI-8 KVERT
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY
OBS VA DTG: 23/0520Z
OBS VA CLD: SFC/FL060 N5340 E15954 - N5339 E16001 - N5330 E15958 -
N5332 E15950 MOV SE 15KT
FCST VA CLD +6 HR: 23/1120Z SFC/FL060 N5348 E16033 - N5242 E16045 -
N5240 E16028 - N5258 E16020 - N5348 E16023
FCST VA CLD +12 HR: NO VA EXP
FCST VA CLD +18 HR: NO VA EXP
RMK: NIL
NXT ADVISORY: 20201023/1200Z=

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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


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