Karymsky Volcano Volcanic Ash Advisory: VA AT 20190218/0120Z FL100 EXTD E OBS VA DTG: 18/0120Z to 10000 ft (3000 m)

Mon, 18 Feb 2019, 02:00
02:00 AM | 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 01:52 UTC, 18/02/19 from RJTD
VA ADVISORY
DTG: 20190218/0152Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2019/17
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA AT 20190218/0120Z FL100 EXTD E
OBS VA DTG: 18/0120Z
OBS VA CLD: SFC/FL100 N5405 E15928 - N5407 E15950 - N5358 E16025 -
N5421 E16133 - N5346 E16148 - N5334 E16034 - N5349 E15938 MOV E 10KT
FCST VA CLD +6 HR: 18/0720Z SFC/FL100 N5449 E16448 - N5337 E16240 -
N5337 E16046 - N5402 E16043 - N5453 E16332
FCST VA CLD +12 HR: 18/1320Z SFC/FL090 N5623 E16757 - N5453 E16509 -

N5322 E16349 - N5320 E16212 - N5400 E16147 - N5621 E16647
FCST VA CLD +18 HR: 18/1920Z SFC/FL090 N5846 E17155 - N5558 E16647 -

N5302 E16638 - N5300 E16406 - N5410 E16303 - N5730 E16746
RMK: NEW VA OBS IN SATELLITE IMAGERY.
NXT ADVISORY: 20190218/0600Z=

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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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