Publication Date:
2017-04-04
Description:
Geodetic observations at Campi Flegrei caldera were initiated in 1905. Historical observations and the few
measurements made before 1970 suggested a deflationary trend. Since 1969, the ground started to inflate during
two major uplift episodes in 1969–72 and 1982–1985. We collected and reanalyzed all available punctual
observations of vertical ground displacement taken in the period 1905–2009with special attention to the period
before 1969, to reconstruct in greater detail the deformation history of the caldera. We make use of the many
photographs of the sea level in a roman ruin (the Serapeum Market) taken during the period between 1905 and
1969 to infer with more accuracy its relative height with respect to the sea level. We identify a previously
disregarded major episode of ground uplift occurred between 1950 and 1952 with a maximum uplift of about
73 cm. This finding suggests that Campi Flegrei is currently experiencing a prolonged period of unrest longer than
previously thought. The higher seismicity associated with the later episodes of unrest suggests that the volcano
has approached an instability threshold, which may eventually result in a volcanic eruption.
Description:
Published
Description:
48–56
Description:
1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attive
Description:
3.10. Storia ed archeologia applicate alle Scienze della Terra
Description:
JCR Journal
Description:
reserved
Keywords:
Campi Flegrei
;
deformation
;
unrest
;
precursor
;
04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
