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Campi Flegrei (Phlegrean Fields) Vulkan
Kaldera 458 m
Italien, 40.83°N / 14.14°E
Aktueller Status: unruhig (2 von 5)
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Ausbrüche des Campi Flegrei (Phlegrean Fields):
Campanian Ignimbrite eruption ca. 36,000 y.BP, Napoletanian Tuff eruption ca. 15,000 y.BP, 1st. activity epoch 15,000-9,500 y.BP, 2nd activity epoch 8,600-8,200 y.BP, 3rd activity epoch 4,800-3,800 y.BP, 1158 AD (Solfatara eruption), 1538 AD (Monte Nuovo eruption)
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Hoch explosiv, kalderaformende Ausbrüche.


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Phlegean Fields, Italy - news

Campi Flegrei caldera (Italy): new geysir-like fumarole vent observed, ongoing slow inflation

Wednesday Feb 06, 2013 15:35 PM | VON: T

Inflation of the ground by about 10 cm since 1 Jan 2012 (OV / INGV)
Inflation of the ground by about 10 cm since 1 Jan 2012 (OV / INGV)
A new fumarole vent has been detected recently in the Campi Flegrei in the hydrothermal field of Pisciarelli. The new vent was seen ejecting hot gas as well as geyser-like fountains of water reaching 4-5 meters of height. This will inevitably trigger headlines in the press about the possibility of a volcanic eruption in the area, however, it should be looked at in a context that such phenomena are a normal part of the behavior of (very) active hydrothermal systems such as the Campi Flegrei have.
Since 2006, the maximum temperatures at the Pisciarelli fumaroles have climbed to peak in July 2012, and then oscillated at values near water boiling point.
Judging from temperature readings, the Vesuvius Observatory believes that the new vent opened on 23 Jan, when gas temperatures from nearby fumaroles suddenly climbed to values of 98 deg C and then steeply dropped to values oscillating between 75-80°C was recorded.
The heavy rainfalls that day might have caused a stream of water blocking one fumarole vent and triggering the opening of the new one. A sudden addition of cold water into the system would also explain the temperature drop, but further studies will be necessary to conclude better what is happening.
Scientists warn about the possibility of some weak phreatic explosions that could be the result of accumulating overheated water at shallow depth.
In the meanwhile, the slow inflation of the ground near Pozzuoli continued at a rate of about 1 cm peer month, and seismic activity has remained relatively low. According to the observatory, these levels are not considered alarming, but of course, these parameters are very closely being monitored.
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Vorherige Nachrichten
Messwerte einer GPS Station in Pozzuoli - während 2012 wurden etwa 8 cm Anhebung gemessen
Monday, Jan 07, 2013
Wie unser Kollege Marc Szlegat von www.vulkane.net berichtet, hat laut eines jüngeren Berichts des INGV Neapel die Bodendeformation in den Phlegräischen Feldern bei Neapel in letzter Zeit deutlich zugenommen. Während der letzten 12 Monate hob sich der Boden an einigen Orten in der Nähe von Pozzuoli stellenweise um 8 cm auf. ... [mehr]
Location of recent earthquakes in the Campi Flegrei
Saturday, Sep 08, 2012
A new swarm of earthquakes was recorded under the Phlegean Fields near Naples yesterday (8 Sep). The quakes are related to what is called bradyseismus, a slow periodic ground inflation and deflation, which make the ... [mehr]

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