(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
 (2) Issued:20131028/2329Z
 (3) Volcano:Zhupanovsky (CAVW #1000-12-)
 (4) Current Aviation Color Code:GREEN
 (5) Previous Aviation Color Code:yellow
 (6) Source:KVERT
 (7) Notice Number:2013-27
 (8) Volcano Location:N 53 deg 35 min E 159 deg 8 min
 (9) Area:Kamchatka, Russia
(10) Summit Elevation:9702.24 ft (2958 m)
(11) Volcanic Activity Summary:Moderate phreatic eruption of the volcano occurred on October 23-24, 2013. There were ash explosions up to 5 km a.s.l. and ash plumes which extended for about 75 mi (120 km) mainly to the east and south-east of the volcano. Satellite data showed ash plumes near Zhupanovsky volcano were not noted at the images on October 25-28, 2013. According to the data by volcanologists of IVS FED RAS, only strong fumarole activity of the volcano was observing on October 25-26; a thickness of ash was about 10 cm at the summit of the central part of the volcano. Gas-steam activity of the volcano continues. Satellite data showed there was not noting a thermal anomaly over the volcano on October 23-28.

Zhupanovsky is the active volcano. Aerosol and gas-steam plumes could affect low-flying aircraft. KVERT will continues to monitor this volcano.
(12) Volcanic cloud height:NO ASH CLOUD PRODUCED
(13) Other volcanic cloud information:NO ASH CLOUD PRODUCED
(14) Remarks:Zhupanovsky has a complex volcano edifice, composed of four merged cones of stratovolcanoes of similar ages and structures. Zhupanovsky volcanic ridge frames the Nalychevo Valley from the north. Its located about 70 km to the north-east from Petropavlovsk-Kamchatsky. Last moderate phreatic eruption of the volcano occurred on December 1956.
(15) Contacts:Dr. Olga A. Girina, Head of KVERT, IVS FEB RAS
girina@kscnet.ru +74152297890

Duty scientist: +79622825253
(16) Next Notice:A new VONA will be issued if conditions change significantly or the Aviation Color Code is changes. VONAs are posted at http://www.kscnet.ru/ivs/kvert/index_eng.php.

In Russia, KVERT, on behalf of the Institute of Volcanology and Seismology (IVS) FED RAS, is responsible for providing information on volcanic activity to international air navigation services for the airspace users.

CITATION GUIDELINES

For formal scientific citation of this VONA/KVERT Information Release, please use the following:
VONA/KVERT Information Release, October 28, 2013. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://www.kscnet.ru/ivs/kvert/van/?n=2013-27.
Aviation Colour Codes

GREEN

Volcano is in normal, non-eruptive state

   or, after a change from a higher level:

Volcanic activity considered to have ceased, and volcano reverted to its normal, non-eruptive state.

YELLOW

Volcano is experiencing signs of elevated unrest above known background levels.    

 or, after a change from higher level:

Volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.

ORANGE

Volcano is exhibiting heightened unrest with increased likelihood of eruption.

   or,

Volcanic eruption is underway with no or minor ash emission.
[specify ash-plume height if possible]

RED

Eruption is forecast to be imminent with significant emission of ash into the atmosphere likely.

  or,

Eruption is underway with significant emission of ash into the atmosphere.
[specify ash-plume height if possible]