Stromboli - major explosion on 29.08.2019 / 22:43 local - photo LGS / Laboratorio di Geofisica Experimental University of Firenze - Dipartimento di Scienze della Terra
On 29 August 2019 at 20:43:41 UTC, the geophysical monitoring network recorded a very powerful explosive event at Stromboli , associated with geophysical parameters (seismic, ground deformation and sound pressure) that are higher than the ordinary explosive activity and can be classified as follows: Major explosion!
Explosion 29.08.2019 webcam ROC- LGS / Laboratorio di Geofisica Experimental University of Firenze - Dipartimento di Scienze della Terra
The seismic event (speed of 4.0 x 10-4 m / s and displacement of 4.5 x 10-5 m) exceeds the values of ordinary activity
The infrasonic network indicates that the explosion generated pressures of about 250 Pa, at a distance of 450 m, and located the explosive event in the area in relation to the Central / SW crater.
This event was accompanied by a strong signal of soil deformation (1.17 μrad in the OHO inclinometer of Rina Grande), preceded by about 2 minutes of a net swelling of the soil.
Following the explosion, there is an increase in seismic tremor to very high values and an increase in the lava flow from the crater NE crater of Sciara del fuoco.
Stromboli - Comparison between seismic amplitudes (UD) and inclination. Soil deformations indicate that today's event (star) falls largely into the domain of major explosions. The red dots indicate the values for the paroxysmal events of March 15, 2007, July 3, 2019 and August 28, 2019. - Doc. LGS
Source: LGS / Laboratorio di Geofisica Experimental - University of Firenze
Stromboli - night activity 30.08.2019, at 02:32, 02:32 and 04:01 / Laboratorio di Geofisica Experimental & Skyline webcamsStromboli - night activity 30.08.2019, at 02:32, 02:32 and 04:01 / Laboratorio di Geofisica Experimental & Skyline webcams - one click to enlarge
Following the accident suffered by two boats on 28 August during the sea advance of the pyroclastic flow, a much needed extension of the navigation area was expected ...
COMMUNICATION FROM THE MILAZZO COAST GUARD
" With regard to the latest violent paroxysmal explosive sequences that affected the Stromboli crater terrace, after hearing the assessments of the centers of scientific competence, it was decided to further extend the ban on the surface of the water. in front of the "Sciara del Fuoco".
As a result, the Chief of Milazzo's Maritime Division today issued Order No. 37/2019, which provides for the prohibition of navigation to all units in the sea-band of one nautical mile, or 1.852 meters of the coast between Punta delle Chiappe and Punta Labronzo of the island of Stromboli, in order to preserve and protect public safety and navigation."
Milazzo, August 29, 2019
In Kamchatka, the explosive-extrusive activity of Sheveluch continues.
On August 29, 2019, a plume and cloud of ashes rose to 9,000 - 10,000 meters asl., According to images from the Himawari-8 satellite, before drifting north, then NNE, before returning south pushed by the winds at altitude.
Sources: KVERT & VAACTokyo
In terms of bans, we must add the one that concerns the eastern end of Reynisfjara beach, in the sid of Iceland. IMO experts expect a new landslide, after that of the week last.
The challenge is to find a way to establish barriers that are resistant to wind, currents and strong waves.
The tourist area of the volcanic organ and cave is not concerned.
Source: Iceland Review