Activity of Nevado del Ruiz, Popocatépetl, Veniaminof, Etna and Lo'ihi seamount.

Nevado del Ruiz, after an increase of the seismic signals associated with the movements of internal fluids, presented tremor on September 4th, associated with an emission of ashes.

Alert level remains at Amarillo / 3 / change in behavior of volcanic activity

Source: Servicio Geologico Columbiano 04,09,2018 / 23:30 local

The Cenapred reports 64 low-intensity exhalations of gas, water vapor and a little ash dispersing to a western sector, as well as nocturnal glow at Popocatépetl.

The level of alert remains the same, associated with the recommendation not to access the volcano and the crater.

Source: Cenapred

The aviation code was raised for the second time in two days at Veniaminof, changing to orange.

The seismic activity remains high and small ash emissions observed on the webcam, and confirmed by observers in Perryville.

Source: AVO-USGS

At Etna, the new crater southeast produced this September 5 at 6:15 and 8:36, two loud explosions audible from the coast, accompanied by emission of a plume of ashes.

Source: EtNative / Grazia Emme

Exploration by E / V Nautilus team of the Lo'ihi seamount continues.
Examination of the hydrothermal activity revealed rocky areas near its summit and the Pele's pit crater covered with a yellow carpet of iron oxide deposits, produced by the active vents or by iron-consuming microbes.
This oceanic environment would be similar to other environments of the solar system, and could perfect the knowledge about the habitability of other planets.

Source: Nautilus Live