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Summary of world-wide volcanic activity 23-29 May 2012Friday Jun 01, 2012 17:46 PM | BY: T
The new Smithsonian / USGS Weekly Volcanic Activity Report is summarized as follows: -- new activity --- Galunggung (West Java, Indonesia): unrest disappears, alert level lowered back to normal Fuego (Guatemala): strong strombolian activity, ash plumes up to 2 km height, occasional pyroclastic flows Nevado del Ruiz (Colombia): possible minor eruption on 22 May, increase of activity and ash emissions on 29-30 May, eruptive activity Sirung (Pantar Island, Indonesia): weak steaming, alert lowered to 2 (out of 4) Soputan (North Sulawesi, Indonesia): increased seismic activity since 25 May, steaming from summit crater, eruption warning --- ongoing activity --- Bagana (Bougainville Island, Papua New Guinea): lava flow detected on satellite 16 May Cleveland (Aleutians): no activity detected Dukono (Halmahera Island, Indonesia): intermittent strong explosions, ash plumes reaching 4-5 km altitude Karmysky (Kamchatka): possible moderate eruption on 27 May with ash plume reaching 3 km altitude Popocatépetl (Mexico): ash venting and explosions, ash columns rising up to 2 km, incandescent tephra ejected occasionally Sakurajima (Japan): strong intermittent explosive activity, ash plumes reaching 4.6 km altitude Sangay (Ecuador): possible ash eruption on 28 May Santiaguito (Guatemala): moderate ash explosions 400-900 m high, glowing avalanches and viscous lava flow from dome Shiveluch (Kamchatka): strong explosive activity, ash plumes up to 10 km altitude on 19-20 May Tungurahua (Ecuador): ash venting and intermittent explosions, plumes up to 2.5 km above crater, ash fall ---
Lidhje / Burimet: Lajme mëparshmeThursday, May 31, 2012
The first pilot group trip to Lesvos led the guests to geological highlights of the island of Lesbos. Also, if Lesbos is not known as a volcanic area, so there are clear traces of volcanic activity in the northwest of the island. The most famous example is the Petrified Forest of Sigri. There volcanic eruptions about 20 million years ago have preserved forests by covering with silicon-rich ash permanently. One of the best preserved fossil forests in the world. The remnants of volcanoes that have preserved this forest can be seen in some places very well. The hot springs of Eftalou Polihnitos and are a sign that it is below the island of Lesbos still active magma chambers. In Polihnitos we visited nearly 90 degrees C hot springs, and could even see how it dead animal be permanently preserved by minerals over time. If successful, the unexpected discovery Eftalou very beautiful quartz crystals. ...
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The past week was dominated by the paroxysm at Fuego volcano on 20 May and ongoing strong explosive activity at Shiveluch in Kamchatka. The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows: ...
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