Karymsky Volcano Volcanic Ash Advisory: VA EMISSIONS CONTINUING OBS VA DTG: 18/1720Z to 10000 ft (3000 m)

Mon, 18 Feb 2019, 18:15
18:15 PM | BY: VN
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 and is moving at 10 kts in E direction.
The full report is as follows:

FVFE01 at 18:00 UTC, 18/02/19 from RJTD
VA ADVISORY
DTG: 20190218/1800Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2019/20
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA EMISSIONS CONTINUING
OBS VA DTG: 18/1720Z
OBS VA CLD: SFC/FL100 N5404 E15925 - N5424 E16041 - N5419 E16201 -
N5339 E16110 - N5344 E16002 MOV E 10KT
FCST VA CLD +6 HR: 18/2320Z SFC/FL100 N5405 E16333 - N5311 E16240 -
N5319 E16122 - N5404 E15924
FCST VA CLD +12 HR: 19/0520Z SFC/FL100 N5355 E16531 - N5300 E16453 -

N5305 E16335 - N5404 E16116 - N5401 E15926 - N5416 E16052
FCST VA CLD +18 HR: 19/1120Z SFC/FL100 N5351 E16755 - N5305 E16715 -

N5304 E16515 - N5409 E16236 - N5348 E16100 - N5404 E15924 - N5433
E16312
RMK: SOME PART OF VA OBSCURED BY MET CLOUD.
NXT ADVISORY: 20190219/0000Z=

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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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