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Karymsky Volcano Volcanic Ash Advisory: VA EMISSIONS CONTINUING OBS VA DTG: 17/1720Z to 12000 ft (3700 m)

Sun, 17 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 12000 ft (3700 m) altitude or flight level 120 .
The full report is as follows:

FVFE01 at 18:00 UTC, 17/02/19 from RJTD
VA ADVISORY
DTG: 20190217/1800Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2019/15
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA EMISSIONS CONTINUING
OBS VA DTG: 17/1720Z
OBS VA CLD: SFC/FL120 N5403 E15928 - N5403 E16218 - N5328 E16035 MOV

E 10KT
FCST VA CLD +6 HR: 17/2320Z SFC/FL120 N5447 E16525 - N5430 E16520 -
N5335 E16239 - N5335 E16031 - N5406 E15934 - N5401 E16146
FCST VA CLD +12 HR: 18/0520Z SFC/FL120 N5627 E16828 - N5514 E16825 -

N5335 E16351 - N5353 E15905 - N5452 E16459
FCST VA CLD +18 HR: NO VA EXP
RMK: SOME PART OF VA OBSCURED BY MET CLOUD.
NXT ADVISORY: 20190218/0000Z=

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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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