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February 27, 2024, 04:36:35 AM

Author Topic: Italy, Napoli, Pozzuoli, Macellum of Pozzuoli  (Read 4910 times)

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FdW

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Re: Italy, Napoli, Pozzuoli, Macellum of Pozzuoli
« Reply #4 on: February 11, 2022, 10:06:45 AM »
Phlegraean Fields - uplift of about 90 cm since 2005 - Pozzuoli GPS station - INGV 2022
Update on Campi Flegrei, from the January 2022 watch bulletin. The Phlegraean Fields show activity related to the current phase of bradyseism which began at the end of 2005. The average uplift velocity measured in recent months is about 13 ± 2 mm/month and the uplift reached a value of about 90 cm from November 2005. In January, 260 earthquakes with a maximum magnitude of 2.5 ± 0.3 were recorded.
http://www.earth-of-fire.com/2022/02/paroxysm-of-etna-and-activity-of-the-semisopochnoi-and-the-phlegraean-fields.html

FdW

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Re: Italy, Napoli, Pozzuoli, Macellum of Pozzuoli
« Reply #3 on: December 21, 2020, 12:05:50 PM »
The soil deformation monitoring networks confirm a radial geometry of the ascent centered in the Pozzuoli area with an average speed of around 10 mm / month. The ascent recorded at the GPS station of Rione Terra (RITE) from January 2016 is approximately 39 cm. Thermographic measurements in the monitored areas show noticeably stable temperature trends with a slight downward trend. The geochemical parameters confirm the upward trends already observed previously. Everything therefore seems under control and within standards. ...
http://www.earth-of-fire.com/2020/12/activity-of-kilauea-klyuchevskoy-ruapehu-and-the-phlegraean-fields.html
https://ingvvulcani.com/2020/12/21/la-sorveglianza-geochimica-dei-vulcani-campani/

FdW

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Re: Italy, Napoli, Pozzuoli, Macellum of Pozzuoli
« Reply #2 on: December 10, 2016, 02:38:21 PM »
"Bradyseism is the gradual uplift (positive bradyseism) or descent (negative bradyseism) of part of the Earth's surface caused by the filling or emptying of an underground magma chamber and/or hydrothermal activity, particularly in volcanic calderas. More recently, between 1968 and 1972, the Campi Flegrei area suffered an episode of positive bradyseism and rose by 1.7 metres. Another rise of 1.8 metres occurred between 1982 and 1984"
https://en.wikipedia.org/wiki/Bradyseism
"... showing that the Earth's crust could be subject to gradual movement without destructive earthquakes"
https://en.wikipedia.org/wiki/Macellum_of_Pozzuoli

So: finally some pictures from me on this subject... (my visit was in january 2016)

1. Overview of the Macellum of Pozzuoli, with the sea and harbour in the background
     (note the difference in altitude between the current level of the seawater and the Macellum)
2. The three pillars of the Macellum where the boreholes of the Lithophaga molluscs are visible, within the red square
     (showing that the pillars were at one time, under seawater, without collapsing when they came up again)
3. Details of the three pillars with the boreholes
4. Details of one of the pillars with the boreholes
5. Last overview ; the water is rainwater

For the Phlegrean Fields, see http://www.strahlen.org/forum/index.php/topic,566.0.html (for Active Members)

FdW

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