Between September 28 and 29 at 17h at the same time, the Cotopaxi Ecuador presented 243 volcanotectonic earthquakes with a magnitude between 1.5 and 2 on the Richter scale, in conjunction with rock fracturing and the magma ascent.
Yesterday morning, intermittent fumes consisting primarily of water vapor. In the evening, emissions, made up of water vapor and gases, little charged in ashes, by now had a blue color, indicating the presence of sulphate aerosols; a smell of sulfur was also seen in the area of El Boliche.
These emissions are controlled by IG through fixed and mobile DOAS stations. (link)
- Photo José Luis Espinosa-Naranjo taken this Sunday.
Different pyroclastic flows accompanied the eruption of Santiaguito / Guatemala this September 29th. They moved about 4 km. in the upper parts of the rio Caballo de Angel and Nima I & II, raising ashes in direction east, with falls recorded on the road between Quetzaltenango and El Palmar. Heavy rains may cause lahars in the before mentioned drainages.
Source: Insivumeh / OVSAN
In Iceland, the Met Office reports a jökulhlaup, a glacial flood training in Skaftá River, this September 29, given the movement of GPS stations and electrical conductivity measurements.
These floods are caused by two glacial caldrons, formed following the persistent geothermal activity beneath the Vatnajökull; they drain every two years on average, with more than 1,500 m³ / sec speeds. The last Jökulhlaup took place in 2010. More news soon after emerging of the flood.
Sources: IMO / Icelandic Met Office & mbls.is