America’s Volcanoes

Current Stromboli status from INGV, translated via Google:

The Press 11-10-2007
Updated at 12:00 local
(Times specified in the text are all GMT)

In today on the island of Stromboli are 2 units operating personnel INGV Within four areas of monitoring: Volcanology, Seismology, Geochemistry and deformities.

The data provided until midnight yesterday by the networks monitoring deformation of the soil (networks GPS and Topographic) installed on the island do not show significant changes compared to the trend registered the previous days. No data are available in the early hours of today, because of problems power system to COA. At the resumption of operation of systems, not observed significant variations than measured before the interruption.

I acquired data from 5 of the 13 stations that make up the network for problems at the heart of acquisition COA at Stromboli. The seismic activity recorded in the last 24 hours has presented the following features (GMT times):
• An analysis of the seismograms showed no signs associated with seismic events.
• The amplitude volcanic tremor has remained generally on a medium level. The current trend is slightly increasing.
• The counting of events Very Long Period (VLP) gave a value of about 10 events per hour.
• The amplitude of the signals VLP is on a low level with stationary trend.
• The location of the source signal VLP through semblance analysis indicates a hypocentral depth within the 400 m-500 m s.l.m.
• The parameters of polarization in the seismic signal frequency band not VLP show substantial variations in the position of the source.
• The magnitude of explosion-quakes is on low values, with some amplitude event medium.

Analysis of geochemical parameters acquired in the last 24 hours, through the monitoring network the continuous and discrete measures, is summarized below:
• The soil temperature measured at 50 cm depth by SST02 station, located at Pizzo above the pit, shows a value of 69 ° C at about 4:00 a.m. Of 11/10/2007.
• The flow of CO2 from measured from the ground station STR02 Pizzo placed on the pit above shows a daily average value of 4500 g m-2 d-1 in the last 24 hours.
• The flow of SO2 plume emitted from Stromboli network FLAMES measured by the 10th day
October presents a daily average of 120 t / d
• There are no updates on C / S plume of Stromboli, as measured by the station Automatic Pizzo.

Trackback URI | Comments RSS