Karymsky volcano Volcanic Ash Advisory: VA CONTINUOUSLY OBS ON SATELLITE IMAGERY OBS VA DTG: 20/0220Z

Do, 20. Jul 2017, 03:15
03:15 AM |
Satellite image of Karymsky volcano on 20 Jul 2017
Satellite image of Karymsky volcano on 20 Jul 2017
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:

FVFE01 at 03:00 UTC, 20/07/17 from RJTD
VA ADVISORY
DTG: 20170720/0300Z
VAAC: TOKYO
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
AREA: RUSSIA
SUMMIT ELEV: 1513M
ADVISORY NR: 2017/66
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: VA CONTINUOUSLY OBS ON SATELLITE IMAGERY
OBS VA DTG: 20/0220Z
OBS VA CLD: SFC/FL130 N5356 E15851 - N5354 E15857 - N5354 E15904 -
N5351 E15904 - N5349 E15856 - N5352 E15849 MOV W 10KT
FCST VA CLD +6 HR: 20/0820Z SFC/FL120 N5429 E15905 - N5339 E15953 -
N5357 E15908 - N5427 E15842
FCST VA CLD +12 HR: NO VA EXP
FCST VA CLD +18 HR: NO VA EXP
RMK: T+0 CONFIDENCE LOW. SOME PART OF VA OBSCURED BY MET CLOUD.
NXT ADVISORY: 20170720/0600Z=

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Mi, 19. Jul 2017, 06:00
KVERT reported that explosions at Karymsky on 18 July generated ash plumes that rose 1.7 km (5,600 ft) a.s.l. Satellite images showed a weak thermal anomaly over the volcano during 18-20 July, and ash plumes drifting 117 km E on 20 July. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). ... Read all
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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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