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Karymsky Volcano Volcanic Ash Advisory: VA EMISSIONS CONTINUING OBS VA DTG: 18/1120Z to 10000 ft (3000 m)

Mon, 18 Feb 2019, 12:15
12:15 PM | BY: VN
Satellite image of Karymsky volcano on 18 Feb 2019
Satellite image of Karymsky volcano on 18 Feb 2019
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 12:00 UTC, 18/02/19 from RJTD
DTG: 20190218/1200Z
PSN: N5403 E15927
ADVISORY NR: 2019/19
OBS VA DTG: 18/1120Z
OBS VA CLD: SFC/FL100 N5405 E15927 - N5414 E16032 - N5344 E16018 -
N5349 E15939 MOV E 10KT
FCST VA CLD +6 HR: 18/1720Z SFC/FL100 N5402 E16140 - N5325 E16120 -
N5329 E16028 - N5403 E15926
FCST VA CLD +12 HR: 18/2320Z SFC/FL100 N5337 E16310 - N5254 E16252 -

N5258 E16154 - N5404 E15926
FCST VA CLD +18 HR: 19/0520Z SFC/FL100 N5321 E16519 - N5243 E16501 -

N5247 E16406 - N5354 E16102 - N5404 E15924 - N5408 E16114
NXT ADVISORY: 20190218/1800Z=

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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.


Source: GVP, Smithsonian Institution

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