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Earthquakes in the Santa Cruz Islands, Solomon Islands

Friday Feb 01, 2013 16:57 PM | BY: T

Map of Nenda Island (Solomon Islands) and the recent quakes along with the location of Tinakula
Map of Nenda Island (Solomon Islands) and the recent quakes along with the location of Tinakula
A series of large, relatively shallow (10-50 km) tectonic earthquakes has been occurring in the remote Santa Cruz Islands belonging to the Solomon Islands in the past few days. Since 29 Jan, 13 quakes above magnitude 5 including 3 above magnitude 6 have occurred in clusters in 2 areas. The first (29-30 Jan) and latest (today) cluster of quakes was in an area about 50 km SW of Nata on Nenda Island, the second one (31 Jan) about 50 km ENE of Nenda Island.
The area of the quakes lies at the subduction zone where the Australian oceanic plate dives under the Pacific plate. The subduction process also causes volcanic activity along an arc of island volcanoes. The nearest volcano to the earthquakes is Tinakula, located to the north of Nenda, about 70 km distance from both areas of earthquakes. Tinakula is rarely visited, but one of the most active volcanoes in the world, and often in strombolian activity.
Previous news
Etna this morning.
Friday, Feb 01, 2013
Stromboli (Eolian Islands, Italy): The volcano has returned to low to medium levels of activity. Explosions have become significantly smaller. ... [more]
Etna's summit area today (INGV webcam)
Thursday, Jan 31, 2013
Etna (Sicily, Italy): Etna has returned to apparent calm, but it is probably only a matter of days before new activity appears, likely at either Bocca Nuova or the New SE crater. Diffuse ash emissions seem to be occurring from the latter (see image). ... [more]
Current seismic signal from Stromboli (ST8 station, INGV)
Wednesday, Jan 30, 2013
Stromboli (Eolian Islands, Italy): Activity has generally decreased over the past days, with less tremor and weaker explosion signals. Today, tremor seems to be stronger again. ... [more]
Glow from Bocca Nuova this evening (INGV webcam)
Wednesday, Jan 30, 2013
Etna (Sicily, Italy): (28 Jan) Activity has dropped again abruptly (and so the tremor signal). ... [more]
Current seismic signal from Stromboli (ST8 station, INGV)
Monday, Jan 28, 2013
Stromboli (Eolian Islands, Italy): Stromboli has returned to more normal levels of activity during the past days and not produced any new lava flows. ... [more]

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