Karymsky Volcano Volcanic Ash Advisory: VA EMISSIONS CONTINUING OBS VA DTG: 01/2320Z to 17000 ft (5200 m)

Mon, 2 Nov 2020, 00:15
00:15 AM | BY: VN
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 17000 ft (5200 m) altitude or flight level 170 and is moving at 5 kts in SW direction.
The full report is as follows:

FVFE01 at 00:01 UTC, 02/11/20 from RJTD
DTG: 20201102/0000Z
PSN: N5403 E15927
ADVISORY NR: 2020/104
OBS VA DTG: 01/2320Z
OBS VA CLD: SFC/FL170 N5353 E15916 - N5411 E15921 - N5409 E15939 -
N5352 E15930 MOV SW 5KT
FCST VA CLD +6 HR: 02/0520Z SFC/FL170 N5450 E16022 - N5339 E16040 -
N5400 E15924 - N5429 E15855 - N5448 E15922
FCST VA CLD +12 HR: 02/1120Z SFC/FL170 N5536 E16132 - N5428 E16157 -

N5357 E16134 - N5404 E15924 - N5454 E15838 - N5526 E15936
FCST VA CLD +18 HR: 02/1720Z SFC/FL170 N5616 E16345 - N5429 E16343 -

N5404 E15926 - N5511 E15830 - N5613 E15940
NXT ADVISORY: 20201102/0600Z=

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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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