Monthly bulletins from the OVSG-IPGP

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This page presents the last monthly information bulletin from the Volcanological and seismological Observatory of Guadeloupe (OVSG-IPGP), sent to a broad list of recipients: Authorities and local communities, scientific organizations, media and private individuals registered on our e-mail list.
These bulletins synthesize the volcanic activity of the Soufrière volcano and the regional seismic activity. For specific and more detailed information on each seism in Guadeloupe, please consult our official statements.
To receive the OVSG bulletins regularly please make a request to info@ovsg.univ-ag.fr

News bulletins from the OVSG...

Soufrière of Guadeloupe is an active volcano of explosive type having known many magmatic and phreatic eruptions in the past and presenting an important risk for the zone of south Basse Terre.
The IPGP has the responsability of monitoring its activity and the reason the OVSG was created and follows 24h/ a day the volcano activity to detect any change of behavior and to evaluate this in terms of eruptive potential if necessary.

The monthly bulletin of the OVSG is the principal vector of information regarding the monitoring task oat OSG and indicates the level of activity of Soufrière and the corresponding level of alarm decided by the Prefecture. It is intended at the same time for the authorities, the media and the general public and reflects the need to regularly inform of the state of the volcano analyzed through the instrumental observations of the OVSG.
The monthly bulletin also informs about the main measurements and analyses carried out by the OVSG:

- For the volcanic activity of Soufrière : volcanic seismicity (number of seisms, maximum magnitude, depths, cumulated energy,), fumaroles activity (flows, temperatures, acidity, concentrations in elements of magmatic origin), thermal springs (temperatures, variation of the chemical composition), drillings (temperatures), deformations,
phenomenology, meteorology... also exceptional scientific experiments under development;

- For the regional seismic activity: regional seismicity (number of seisms, maximum magnitude, details of the seisms felt if necessary), exceptional seismicity (for example the crisis of the Saintes: number of aftershocks, details on the most important aftershocks in term magnitude and intensity, temporal evolution, chart of epicenters localization, general interpretation), volcanic activity at Montserrat or Dominica (if an eruption is undergoing for example, on the basis of information coming from the MVO and the SRU),

- As an appendix, the bulletins informs on the levels of volcanic activity and their associated levels of alarm, as well as the simplified scale of seismic intensities: