Volcanic eruptions in Kamchatka and Italy

Stromboli volcano (Italy): larger than normal explosion

A very large explosion, or possibly a partial crater collapse has just occurred. We felt a strong shaking and shortly afterwards, a large ash plume blacking out the sun drifted SE over the house onto the sea. When more details are available, we will update on this event.

http://www.volcanodiscovery.com/stromboli/news/26533/Stromboli-volcano-Italy-new-short-lived-lava-flow-high-tremor-signal.html

January 12, 2013 volcano activity

http://earthquake-report.com/2013/01/12/volcano-activity-of-january-12-2013/

KVERT reports a slight decrease in volcanic tremor amplitude at Plosky Tolbachik (Kamchatka Peninsula) today.  Recent MODIS satellite data show a diminished thermal anomaly over the new lava flows as they continue to cool.

@JohnSeach reported a large explosion (45,000+ feet high ash cloud) occurred at Manam volcano (New Guinea) earlier today.  Recent OMI satellite data shows a modest SO2 anomaly over the volcano. Below the VAAC ash plume map. The dotted line is the ash cloud from the powerful explosion, the dotted line expected further ash clouds.

Small earthquakes have clustered beneath Akutan volcano (Aleutian Islands) (station ZRO) the past week.  The earthquakes (small spikes) continue at a low, but regular rate of occurrence.  Akutan Island was the site of an intense earthquake swarm (dike injection-aborted eruption) in 1996.

Exhalations continue to occur at a reduced rate (less than once per hour on average) at Popocatepetl volcano (Mexico).  Small volcanic earthquakes continue at Colima volcano, suggesting further surface activity should be expected there.

Seismicity is reduced at Fuego volcano (Guatemala) (station FG3) and Santa Maria volcano (station STG6).  Both seismicity and a volcanocam photo indicate a recent exhalation from the Satiaguito Dome Complex (Santa Maria volcano).  Nearby Pacaya volcan chatters with frequent volcanic earthquakes (station PCG).

Banded volcanic tremor at San Cristobal volcano (Nicaragua) (station CRIN) has become more pulsatory and diminished during the past 24 hours.  Elevated volcanic tremor continues at Masaya volcano (station MASN), and volcanic earthquakes (and a train of volcanic tremor) continue to affect Concepcion volcano (station CONN) today.

Volcanic tremor has diminished at San Miguel volcano (station VSM), but occasional volcanic earthquakes have struck the volcano the past few days.

Numerous small earthquakes rattle Colombian volcanoes: Nevado Del Ruiz (station OLLZ), Machin (station CIMA), and Galeras (station ANGV) today.

Tungurahua volcano (Ecuador) (station RETU) has returned to slumber, internal activity appears on the increase again at Reventador volcano (station CONE), and a few small earthquakes have affected Cotopaxivolcano (station COV1) during the past few days.

SERNAGEOMIN reports that seismicity has diminished slightly beneath Copahue volcano during the past 24 hours.  Just over 1000 events occurred during that period.

Small “chugging” earthquakes are apparent on seismograms (at 16 Hour) recorded at Tongariro volcano (New Zealand) during the past day.  Low-level volcanic tremor and a few local earthquakes are visible on seismic records from Ruapehu volcano, and Volcanic tremor continues at White Island volcano.

Beside the activity at Manam volcano, recent satellite imagery shows SO2-enriched plumes over Popocatepetl volcano, and Ambrym volcano (Vanuatu).

(Major) Earthquakes list January 12, 2013 – Minor damages and 1 injured person in Boldaji, Iran

Moderate (very shallow?) earthquake below the Moluccas coast, Indonesia

BMKG has not listed this earthquake at the time of writing.

USGS puts the epicenter below the coast at a very shallow depth but Geofon and EMSC have reported their epicenters in the coastal waters (big difference) and at 17 and 30 km depth respectively.

We think that we can conclude that based on the fact that these people are used to much stronger earthquakes, this earthquake will not generate serious damage or injuries. We will however follow up the situation closely.

Earthquake(s) Oregon coast

Nothing unusual and no threat to the coastal population if not stronger than M6. The greater epicenter area has very often earthquakes with this strength. The ocean floor on the satellite picture shows clearly what happens. The irregular form of the ridge (yes partly volcanic) fault zone creates regular hanging plates who generate earthquakes when the stress gets too high.

Minor damages and 1 injured person in Boldaji, Iran

An earthquake measuring Mn5.2 at a depth of 10 km (data Iranian Seismological Agency) occurred almost below the city of Boldaji, Iran. Boldaji has a population of 10,905 (2600 families).

Iranian sources are reporting 1 injured person (hospitalized) and many houses with cracks in Boldaji. The Iranian red crescent and emergency services are still assessing the situation.

Epicenter location : 1 Km of Boldaji, Charmahal va Bakhtiari , 11 Km of Gandoman, Charmahal va Bakhtiari , 19 Km of Gahroo, Charmahal va Bakhtiar

The small map at right (courtesy ICS) shows the many fault lines in that area. Iran is a country with a high density of extremely dangerous fault zones. Shallow earthquakes in Iran are considered by ER as potentially dangerous from Magnitude 5 or higher.

SRC	Location	UTC Date/time	M	D	INFORMATION
ER	I Felt A (not Listed) Strong Earthquake	Jan 12 23:59 PM	4.6	0.1	MAP	I Felt It
EMSC	Seram, Indonesia	Jan 12 17:33 PM	5.5	30.0	MAP	I Felt It
GEOFON	Seram, Indonesia	Jan 12 17:33 PM	5.2	19.0	MAP	I Felt It
USGS	Seram, Indonesia	Jan 12 17:33 PM	5.3	7.3	MAP	I Felt It
EMSC	Off W Coast Of Northern Sumatra	Jan 12 16:41 PM	4.7	40.0	MAP	I Felt It
GEOFON	Off West Coast Of Northern Sumatra	Jan 12 16:41 PM	4.8	10.0	MAP	I Felt It
EMSC	South Atlantic Ocean	Jan 12 14:32 PM	5.1	10.0	MAP	I Felt It
GEOFON	South Atlantic Ocean	Jan 12 14:32 PM	4.9	10.0	MAP	I Felt It
USGS	South Atlantic Ocean	Jan 12 14:32 PM	5.1	14.5	MAP	I Felt It
GEOFON	Kuril Islands	Jan 12 13:37 PM	5.4	63.0	MAP	I Felt It
EMSC	Kuril Islands	Jan 12 13:37 PM	5.3	48.0	MAP	I Felt It
USGS	Kuril Islands	Jan 12 13:37 PM	5.3	35.0	MAP	I Felt It
USGS	Taiwan Region	Jan 12 12:34 PM	4.8	28.0	MAP	I Felt It
EMSC	Taiwan Region	Jan 12 12:34 PM	4.8	30.0	MAP	I Felt It
GEOFON	Taiwan Region	Jan 12 12:34 PM	4.6	10.0	MAP	I Felt It
EMSC	Off East Coast Of Honshu, Japan	Jan 12 12:16 PM	4.6	35.0	MAP	I Felt It
USGS	Off The East Coast Of Honshu, Japan	Jan 12 12:16 PM	4.6	35.0	MAP	I Felt It
GEOFON	Vanuatu Islands	Jan 12 10:22 AM	4.6	232.0	MAP	I Felt It
EMSC	Vanuatu	Jan 12 10:22 AM	4.6	232.0	MAP	I Felt It
USGS	Vanuatu	Jan 12 10:22 AM	4.7	212.6	MAP	I Felt It
USGS	Papua, Indonesia	Jan 12 09:15 AM	5.0	44.3	MAP	I Felt It
EMSC	Near N Coast Of Papua, Indonesia	Jan 12 09:15 AM	5.0	40.0	MAP	I Felt It
GEOFON	Near North Coast Of Irian Jaya	Jan 12 09:15 AM	5.0	10.0	MAP	I Felt It
GEOFON	Carlsberg Ridge	Jan 12 07:06 AM	4.6	10.0	MAP	I Felt It
EMSC	Carlsberg Ridge	Jan 12 07:06 AM	4.6	10.0	MAP	I Felt It
EMSC	Virgin Islands Region	Jan 12 05:42 AM	4.7	10.0	MAP	I Felt It
GEOFON	Virgin Islands	Jan 12 05:42 AM	4.7	10.0	MAP	I Felt It
ISC	Boldaji, Bakhtiari, Iran	Jan 12 03:25 AM	5.2	10.0	MAP	I Felt It
GEOFON	Northern And Central Iran	Jan 12 03:25 AM	5.2	10.0	MAP	I Felt It
EMSC	Western Iran	Jan 12 03:25 AM	5.3	9.0	MAP	I Felt It
USGS	Western Iran	Jan 12 03:25 AM	5.4	10.0	MAP	I Felt It
GEOFON	Fiji Islands Region	Jan 12 01:10 AM	4.8	588.0	MAP	I Felt It
EMSC	Fiji Region	Jan 12 01:10 AM	4.8	588.0	MAP	I Felt It