Activity at Reventador volcano; Bulletin of World Volcanism Dec 2012 Now Available

Reventador volcano (Ecuador): continuing activity and observations on 22 Jan

Source: Volcano Discovery - 1/26/13, Tom Pfeiffer

Activity continues, but likely has becoming more intermittent judging from the seismic signal. Visual observations are most of the time impossible.
In a special bulletin posted yesterday IGEPN summarizes the beginning of the new eruptive phase:
Seismicity began to increase significantly on January 22. The same day, volcanologists received the first reports of sounds of explosions and rumblings heard. On the evening of 22 Jan, new explosive activity produced an ash-rich plume rising 1500 m above the crater, and a new lava flow was detected on the southeastern flank, with its length estimated about 1500 m and the flow front at 2600 m elevation.
Volcanologists have also could see on photographs taken that day, that the lava dome from the previous eruptive phase had grown.

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Bulletin of World Volcanism Dec 2012 - summary of volcano activity worldwide

Source: Volcano Discovery, 1/24/13, By T

The Bulletin of World Volcanism December 2012 is out. It contains a reviewed summary of volcano activity during the past month.

TABLE OF CONTENTS:
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NEW ACTIVITY/UNREST
Copahue (Chile/Argentina) - Yeni Bulunan (Turkey) - San Cristobal (Nicaragua) - Tolbachik (Russia) - Tungurahua (Ecuador) - Paluweh (Indonesia) - White Island (New Zealand) - Pacaya (Guatemala) - Langila (Papua New Guinea) - Chirpoi (Russia) - Ulawun (Papua New Guinea) - Lokon-Empung (Indonesia) - Marapi (Indonesia) - Unnamed (Black Sea) - Aoba (Vanuatu) - Turrialba (Costa Rica) - Adatara (Japan) - Ol Doinyo Lengei (Tanzania) - Sangeang Api (Indonesia)

CONTINUING ACTIVITY
Reventador (Ecuador) - Etna (Italy) - Ambrym (Vanuatu) -
Nevado Del Ruiz (Colombia) - Kliuchevskoi (Russia) - Machin (Colombia) - Heard (Australia) - Kilauea (USA) - Pagan (USA) - Nisyros (Greece) - Batu Tara (Indonesia) - Galeras (Colombia) - Santa Maria (Guatemala) - Karymsky (Russia) - Kizimen (Russia) - Manam (Papua New Guinea) - Popocatepetl (Mexico) - Sakura-Jima (Japan) - Shiveluch (Russia) - Karengetang [Api Siau] (Indonesia) - Bagana (Papua New Guinea) - Fuego (Guatemala) - Stromboli (Italy)

NEW INSIGHTS
Small phreatic explosions at Copahue in 2001 and mid-2012

VOLCANO ANALYSIS
Kueishantao

PLINY AWARD OF THE YEAR

BULLETIN INFORMATION
Writer (s); Lucas Wilson [Editor]
volcanismbulletin.org