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Thursday, Dec 13, 2012
Earthquakes have been more frequent recently at Nisyros volcano. 2 more quakes of magnitude 2.1 and 3.1 have occurred today close to the island at depths of about 10 and 20 km, respectively.
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Tuesday, Dec 04, 2012
A seismic swarm of 2000 microearthquakes near the island of Nisyros since 24 November could indicate a start of a or coming of a volcanic eruption near Nisyros. ...
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More info:
Nisyros volcanoStratovolcano, volcanic domes 680 m
Dodecanese Islands, Greece, 36.58°N / 27.17°E Current status: dormant (1 out of 5) Nisyros webcams / live data [hide map] [enlarge map]
Last update: 13 Dec 2012
Typical eruption style: Hydrothermal explosions, effusive volcano, volcano domes Nisyros volcano eruptions: 1881-1887 - hydrothermic explosions of the crater "Micros Polyvotis" 1500 - hydrothermic explosions 1000-2000 B.C. - hydrothermic explosions of the crater "Stefanos" 5000-10.000 B.C. - hydrothermic eruptions of the Kaminakia craters 15.000-10.000 B.C. - building of postcalderic volcano domes 15.000 B.C. - effusive eruption of the central caldera of Nisyros ("Upper pumice") 25.000 B.C. - effusive eruption of the central caldera of Nisyros ("Lower pumice") 40.000-30.000 B.C. - effusive eruption ("Kira-Formation") 150.000 B.C. - first submarin eruptions Nisyros Volcano Photos Last earthquakes nearby:
The volcano is part of the Hellenic Arc, a curved line of volcanic centers which are caused by a subduction zone, and stretches from the Saronic Gulf opposite Athens via the island groups of Milos, Santorini, and Nisyros-Yali-Cos to the Bodrum peninsula at the extreme SW of Turkey. The last eruption of Nisyros were phreatic explosions in 1881-87. They left a moonscape with colorful craters and very active fumaroles. Background:Nisyros is together with the volcanoes of the Cos caldera the east edge of the Aegean Arch with its active volcanoes Methana, Milos, Santorini. The Nisyros volcano is the most active remain of the Cos caldera that exploded aprox. 150.000 years ago. Nisyros, Yali, Strongyli, Pyrgoussa, Pahia and Kefalos (at Cos) are the remains of a zone that is considered to be still active. A Magma chamber below Nisyros is only 3-4 km deep and still rising up. Since 2000 when the Nisyros research program of the GEOWARN-Team started, the temperatures of the fumaroles have been changing from 98 C to 103 C in 2004. There was also a high tectonic (earthquakes) activity in the last years and so a program to prevent volcanic hazards is still ongoing. Nisyros is a very interesting place (not only) for geologists, because here you can study all kinds of volcanic rocks and you can even walk into the biggest hydrothermic crater on earth. Also the nature is a great thing to discover. Walking in the beautyful mountains is something unforgetable!Nisyros Photos:
3D-Image of the area of Cos & Nisyros
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