XPan
The Living Force
Vulcano • Aeolian Islands - Sicily
5 Sep 2024
Vulkane.net reports of anomalous (CO2) gas emissions from the Fossa Crater on the Island of Vulcano. My husband and I are visiting the island in about 1 month
I hope things stay cool in the village... [though this time, we will be located on the Vulcanello peninsula; the island with a 123 m peak seen to the right, which attaches to Vulcano). In the background you see Lipari, and the double peaks of Salina more to the left, in bluish tones]
If i recall correctly, there was a point 3 years ago or so, where carbon dioxide levels where high in some places of the village, starting to penetrate basement floors in houses, and some people even had to be evacuated. Also back then, it was forbidden to climb the Fossa crater (or you got a 500 € fine) As of now, it is free to go up there.
www.vulkane.net
Two weak earthquakes off the southwest coast of Vulcano
- INGV reports anomalous degassing values
The relaxation at the Lipari island volcano Vulcano did not last long, because since May there have been more earthquakes, increased fumarole temperatures and now also anomalous degassing values. You can find out what this means in this article.
On the INGV's shakemap, you can again see two yellow dots southwest of the island of Vulcano, which represent two very weak earthquakes that manifested themselves on September 2 just off the southwestern tip of the island. The earthquake foci were located at depths of 7 and 10 kilometers. The earthquakes alone give no cause for concern.
However, the data on gas emissions
published in the latest bulletin are a different story. The INGV speaks of anomalous degassing values and a rising trend in carbon dioxide flux, which has increased significantly compared to previous weeks. The average value for the month of August was 16081 g/m2/day. On August 31, values of up to 18240 g/m2/day were measured. Carbon dioxide emissions are not only a cause for concern at the crater rim, but also at some points on Vulcano Porto and at the Sicilia campsite, where there was an increase in emissions. Sulphur dioxide emissions are also still high. The same applies to fumarole temperatures.
The crisis on Vulcano began 3 years ago
when a magma body intruded under the island. A second, smaller intrusion may have occurred in May this year, when the values suddenly rose again during a relaxation phase.
Active Magma body
The data indicate that there is an active magma body in the subsurface that is maturing and whose melt could continue to be capable of eruption. In the course of the maturing process, a lot of gas is released in the magma body, which is now reaching the surface. It must be assumed that the release of gas also increases the pressure in the magma body.
The maturing process causes the magma to cool slowly and form crystals. Nevertheless, there may be enough eruptible melt over long periods of time for a volcanic eruption to occur even years after the intrusion. Usually, the longer the maturation process takes, the more explosive the eruptions become. It becomes particularly critical if another magma body intrudes into the existing one. The risk of eruption then increases significantly.
The INGV researchers describe the volcano as dormant and see the main danger in the gas emissions themselves: The carbon dioxide could collect particularly in basements and cause problems there. In general, there are warnings that further volcanic hazards could develop if the parameters change.
END OF ARTICLE
Photos from 2019
5 Sep 2024
Vulkane.net reports of anomalous (CO2) gas emissions from the Fossa Crater on the Island of Vulcano. My husband and I are visiting the island in about 1 month
I hope things stay cool in the village... [though this time, we will be located on the Vulcanello peninsula; the island with a 123 m peak seen to the right, which attaches to Vulcano). In the background you see Lipari, and the double peaks of Salina more to the left, in bluish tones]If i recall correctly, there was a point 3 years ago or so, where carbon dioxide levels where high in some places of the village, starting to penetrate basement floors in houses, and some people even had to be evacuated. Also back then, it was forbidden to climb the Fossa crater (or you got a 500 € fine) As of now, it is free to go up there.
Vulcano: Zwei Erdbeben und anomale Entgasungswerte - Vulkane Net Newsblog
Zwei schwache Erdbeben vor der Südwestküste von Vulcano. Das INGV meldet anomale Entgasungswerte am Krater.
www.vulkane.net
Two weak earthquakes off the southwest coast of Vulcano
- INGV reports anomalous degassing values
The relaxation at the Lipari island volcano Vulcano did not last long, because since May there have been more earthquakes, increased fumarole temperatures and now also anomalous degassing values. You can find out what this means in this article.
On the INGV's shakemap, you can again see two yellow dots southwest of the island of Vulcano, which represent two very weak earthquakes that manifested themselves on September 2 just off the southwestern tip of the island. The earthquake foci were located at depths of 7 and 10 kilometers. The earthquakes alone give no cause for concern.
However, the data on gas emissions
published in the latest bulletin are a different story. The INGV speaks of anomalous degassing values and a rising trend in carbon dioxide flux, which has increased significantly compared to previous weeks. The average value for the month of August was 16081 g/m2/day. On August 31, values of up to 18240 g/m2/day were measured. Carbon dioxide emissions are not only a cause for concern at the crater rim, but also at some points on Vulcano Porto and at the Sicilia campsite, where there was an increase in emissions. Sulphur dioxide emissions are also still high. The same applies to fumarole temperatures.
The crisis on Vulcano began 3 years ago
when a magma body intruded under the island. A second, smaller intrusion may have occurred in May this year, when the values suddenly rose again during a relaxation phase.
Active Magma body
The data indicate that there is an active magma body in the subsurface that is maturing and whose melt could continue to be capable of eruption. In the course of the maturing process, a lot of gas is released in the magma body, which is now reaching the surface. It must be assumed that the release of gas also increases the pressure in the magma body.
The maturing process causes the magma to cool slowly and form crystals. Nevertheless, there may be enough eruptible melt over long periods of time for a volcanic eruption to occur even years after the intrusion. Usually, the longer the maturation process takes, the more explosive the eruptions become. It becomes particularly critical if another magma body intrudes into the existing one. The risk of eruption then increases significantly.
The INGV researchers describe the volcano as dormant and see the main danger in the gas emissions themselves: The carbon dioxide could collect particularly in basements and cause problems there. In general, there are warnings that further volcanic hazards could develop if the parameters change.
END OF ARTICLE
Photos from 2019