Ultimi sismi, vicino al vulcano Damavand, ultimi 14 giorni

Aggiornato 15 May 2021 05:42 GMT -
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Mon, 3 May 2021 (GMT) (1 terremoto)
3 May 2021 12:46:55 GMT
2.6

10 km
39 km (24 mi)29 km a est da Damāvand, Ostān-e Tehrān, Iran PiùMappa
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Estimated combined seismic energy released: 5 x 108 joules (139 kilowatt hours, equivalent to 0.12 tons of TNT) More info

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The summit crater of Damavand

Volcanologist from Geneva climbed Damavand on 12 July 1993 and 1 August 1999. They observed a small, powerful fumarolic vent on the S rim of the crater, which emitted SO2-rich gases at a temperature of about 50°C.
Sulfur deposits were present on the surrounding slopes. The summit crater itself was about 150 m wide and 20 m deep, and contained a 40-m-diameter frozen lake in the bottom.
There is o permanent glacier because the climate is too dry, but there are patches of hardened perennial snow (névés).
Vertical coal deposits were found on the N flank below 2,450 m elevation, reaching thicknesses of tens of meters. Above 4,000 m elevation huge blocks were seen that probably had fallen and rolled down from 1 km above. Just below the summit, large sulfur-bearing blocks were found. Within 100 m of the N rim of the summit pblocks of pure sulfur were found.

(Source: GVP / Smithsonian monthly reports)
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