Volcano news: Karymsky

Вулкан Karymsky: Консультативный центр по вулканическому пеплу: VA AT 20201218/0100Z FL090 EXTD SW OBS VA DTG: 18/0100Z

Пт, 18 дек 2020, 01:45
01:45 AM | ПЇЅПЇЅПЇЅПЇЅПЇЅ: VN
Эруптивная активность продолжается. Консультативный центр по вулканическому пеплу (VAAC) в Tokyo предупредил о шлейфе вулканического пепла, который поднялся на высоту 9000 футов (2700 m) и движется со скоростью 15 узлов в SW направлении.
Полный отчет выглядит следующим образом:

FVFE01 at 01:34 UTC, 18/12/20 from RJTD
VA ADVISORY
DTG: 20201218/0134Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2020/124
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA AT 20201218/0100Z FL090 EXTD SW
OBS VA DTG: 18/0100Z
OBS VA CLD: SFC/FL090 N5339 E15802 - N5340 E15821 - N5322 E15835 -
N5320 E15818 - N5327 E15805 MOV SW 15KT
FCST VA CLD +6 HR: 18/0700Z SFC/FL100 N5407 E15734 - N5302 E15845 -
N5317 E15801 - N5403 E15707
FCST VA CLD +12 HR: 18/1300Z SFC/FL090 N5329 E15740 - N5237 E15910 -

N5326 E15708 - N5425 E15608 - N5436 E15629
FCST VA CLD +18 HR: NO VA EXP
RMK: SOME PART OF VA OBSCURED BY MET CLOUD.
NXT ADVISORY: 20201218/0600Z=

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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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