Volcano news: Karymsky
Karymsky volcano Volcanic Ash Advisory: POSS ERUPTION OBS AT 20180512/0320Z FL150 EXTD W OBS VA DTG: 12/0400Z
Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:
FVFE01 at 04:30 UTC, 12/05/18 from RJTD
VOLCANO: KARYMSKY 300130
PSN: N5403 E15927
SUMMIT ELEV: 1513M
ADVISORY NR: 2018/35
INFO SOURCE: HIMAWARI-8
AVIATION COLOUR CODE: NIL
ERUPTION DETAILS: POSS ERUPTION OBS AT 20180512/0320Z FL150 EXTD W
OBS VA DTG: 12/0400Z
OBS VA CLD: SFC/FL150 N5357 E15806 - N5405 E15802 - N5407 E15809 -
N5400 E15812 MOV W 45KT
FCST VA CLD +6 HR: 12/1000Z SFC/FL130 N5337 E15627 - N5309 E15602 -
N5238 E15401 - N5151 E15204 - N5305 E15338
FCST VA CLD +12 HR: 12/1600Z SFC/FL120 N5320 E15544 - N5057 E15408 -
N5114 E15230 - N4828 E15101 - N5203 E15107 - N5205 E15357
FCST VA CLD +18 HR: NO VA EXP
RMK: SOME PART OF VA OBSCURED BY MET CLOUD.
NXT ADVISORY: 20180512/0600Z=
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