النشاط بركان 25 أبريل، 2013

هذا آخر (تقريبا) يوميا وتعتزم متابعة التغييرات نشاط البراكين في جميع أنحاء العالم.
وهذا الموضوع كتب بواسطة جيولوجي رودجر ويلسون الذي يتخصص في الزلزالية بركان وVervaeck أرمان. لا تتردد في إخبارنا عن نشاط جديد أو تغيير إذا لم نكتب عن ذلك. -

25 أبريل، 2013 النشاط البركان

KVERT reports no significant changes in eruptive/seismic behavior of the five active Kamchatkan البراكين: Tolbachik, Sheveluch, Kizimen, Bezymianny, and Karymsky, but recent MODIS satellite data suggest either a new lava flow is being extruded at Kizimen, or a significant collapse occurred at the volcano recently, as a bright, multi-pixel thermal anomaly is centered on the volcano today. MODIS satellite thermal imagers also detected "hotspots" at Tolbachik and Sheveluch volcanoes.

Tolbachik_MODIS_Hotspots_20130425

Kizimen_MODIS_Hotspots_20130425

Sheveluch_MODIS_Hotspots_20130425

Another episode of small earthquakes occurred at نيوبيري volcano (Cascade Range) (OR) (station CPCO) this morning.

Small earthquakes (magnitudes < M1.0) also continue along the southern boundary of طويل وادي كالديرا (CA) (station MRD).

Eruptive activity is believed to be continuing at كوليما volcano (Mexico). UCol seismic data have not been updated the past two days. A recent Colima volcanocam photo shows the volcano barely visible through a thick (volcanic?) haze. Exhalations occur at an average rate of about 1.5 events per hour at البركان volcano today. The Popo sesimogram shows an episode of volcanic tremor and several volcano-tectonic earthquakes.

Colima_20130425

INSIVUMEH reports a new lava flow is being extruded at فويغو volcano (Guatemala) (station FG3). MODIS satellite imagery also "captured" that event, depicting the flow with a multi-pixel "hotspot" today. Volcanic tremor has risen at بكايا volcano (station PCG) this afternoon, and four explosions were recorded during a two-minute interval this afternoon as well at سانتا ماريا volcano (station STG3).

Fuego_20130425

Numerous volcanic earthquakes continue to afflict Telica volcano (Nicaragua) (station TELN). Recently, the number of events at Telica decreased and event magnitudes increased. This pattern has been observed before at the volcano with no end result. Volcanic tremor continues to be elevated at سان كريستوبال volcano (station CRIN), and tremor also remains unstable at ماسايا بركان (محطة MASN).

الهزة البركانية لا تزال مرتفعة في سان ميغيل volcano (El Salvador) (station VSM) and relatively large magnitude (magnitudes M1.0 - M2.0) volcanic earthquakes have developed at San Miguel overnight.

Small (hydrothermal?) disturbances continue at POAS بركان (كوستاريكا) (محطة POA2).

Earthquake activity and volcanic tremor are reduced somewhat at نيفادو ديل رويز volcano (Colombia) (station BISZ) today. Small earthquakes are evident on seismograms recorded at ماشين (station CIMA) and Sotara (station SOSO) volcanoes. Small volcano-tectonic earthquakes rattle Galeras volcano (station CUVZ) (the larger, emergent events are gas and ash emissions). A photo of a gas and ash emission which occurred at Galeras today is included.

Galeras_ash_emission_20130425

Earthquake activity remains elevated at كوتوباكسي volcano (Ecuador) (station CO1V). Similar, but fewer, earthquakes occurred at التبخير volcano today (station RETU), and battery/solar panel problems continue to compromise the collection of seismic data from Reventador بركان (محطة مخروط).

Volcanic tremor is slowly waning at جزيرة وايت volcano (New Zealand),...but for how long?

الأخيرة OMI البيانات الساتلية show SO2 plumes drifting from Popocatepetl and Ambrym (Vanuatu) volcanoes today, while MODIS satllite data reveal "hotspots" at Tolbachik, Kizimen, Sheveluch, Fuego, and Paluweh and Batu Tara (eastern Java) volcanoes.

الكلام عقلك

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