World Organization of Volcanic Observatories
Istituto Nazionale di Geofisica e Vulcanologica (INGV)
80056 Ercolano (NA)
Via Manzoni, 249
||39 - 81 - 6108111
39 - 81 - 6108300
|Telefax :||39 - 81 - 6100811|
|Director :||Prof. Giovanni Macedonio|
Dott. Giuseppe Patrizi - firstname.lastname@example.org
Scientific staff :
Ground deformation :
Carlo Del Gaudio
Pier Paolo Gennaro Bruno
Edoardo Del Pezzo
Giuseppe De Natale
Giovanni Pasquale Ricciardi
Macroseismic studies :
Gianfilippo De Astis
Sandro de Vita
Mauro Di Vito
Technical staff :
Eliana Bellucci Sessa
Walter De Cesare
Maddalena De Lucia
Prospero De Martino
Adriano La Rocca
Mario La Rocca
Domenico Lo Bascio
Prof. Lucia Civetta (President)
Prof. Maurizio Bonafede (Univ. Bologna)
Prof. Luigi La Volpe (Univ. Bari)
Prof. Lucio Lirer (Univ. Napoli)
Dott. Tommaso Coppola (Min. Tesoro)
Dott. Francesca Licastro Scardino (MURST)
Prof. Giuseppe De Natale (Geof. Associato Oss.Ves.)
Dott. Mario Castellano (Ric. Geof. Oss. Ves.)
Dott. Davide Santetti (Presidente)
Dott. Giuseppe Bellezza
Dott. Valentina Luciani
Dott. Luigi Renzullo
The most active vents in the fumarolic fields, at Campi Flegrei and Vesuvio, are routinely sampled. The temperature and piezometric level of acquifers are continuously monitored with digital hydrometers in wells.
Gas species determinations (He, H2, N2, O2, CH4, CO, CO2, H2S, SO2, Cl, F, and H2O), and isotopic analyses (mainly C and He) are regularly carried out by gas-chromatography and mass-spectrometry.
Gas flux measurements in soils are carried out at Campi Flegrei and Vesuvio.
a) Levelling network
Vesuvio : The altimetric network covers an area of about 300 km2 and consists of 287 benchmarks. Such a network, more than 220 km long, consists of 15 connected circuits, so allowing a cross check of data and the rigorous compensation of measured heights (Fig. 1). The whole data set is constrained by a reference benchmark located on the limestones of the Sorrento Peninsula (Castellammare). The measurements are carried out each year.
Campi Flegrei : The altimetric network in the Campi Flegrei is about 150 km long and is composed by 320 benchmarks (arranged every 400 m) into eleven loops, in order to minimize the uncertainties (Fig. 2). The network is connected with the Vesuvian and Campanian Plain altimetric networks. At the present, the measurements are carried out one time for year.
Ischia : The altimetric network of the Ischia Island is about 75 km long and consists of 250 benchmarks (Fig. 3). It is measured every two years.
Etna : The altimetric network is about 80 km long and is composed by 150 benchmarks (Fig. 4). It is measured yearly.
Vulcano : The altimetric network is 21 km long and consists of 90 benchmarks (Fig. 5). It is measured yearly.
Pantelleria : The altimetric network is 48 km long and consists of 100 benchmarks (Fig. 6). It is measured every five years.
Campanian Plain : The altimetric network is about 200 km long and consists of 220 benchmarks. It is measured every five years.
b) Trilateration network
Vesuvio : The Vesuvio planimetric network consists of 21 stations (Fig. 7). Surveys are carried out every year.
Campi Flegrei : The Campi Flegrei planimetric network consists of 10 stations one of which also belongs to a small network of 5 stations on the Solfatara edge (Fig. 8). The measurements are performed every year.
c) GPS network
The GPS Neapolitan Volcanic Area Geodetic Network covers the whole volcanic neapolitan area and it is constituted by 32 vertexes. Some GPS stations are located close to the benchmarks of the Vesuvio and Campi Flegrei levelling networks (Fig. 9). The frequency of measurement is yearly.
d) Tiltmetric network
Vesuvio : The Vesuvio tiltmetric network consists of 3 automatic tiltmetric stations, in teletransmission to the Surveillance Center (Fig. 10).
Campi Flegrei : The Campi Flegrei tiltmetric network is composed by 5 automatic stations, in teletransmission to the Surveillance Center (Fig. 2).
e) Tide gauges network
Vesuvio and Campi Flegrei : Seven tide-gauges are spread along the Napoli and Pozzuoli bays. Differential measurements are referred, both to the station placed in the harbour of Napoli and to the one placed on the limestones of the Sorrento Peninsula (Castellammare), SW of the Gulf of Napoli (Figs.1,8).
f) Gravimetric network
Vesuvio: The network consists of 20 stations, most of them coinciding with the benchmarks of the local levelling lines. One absolute gravity station is located at the Osservatorio Vesuviano historical building (Fig. 1). The measurements are carried out one time for year.
Campi Flegrei : The network consists in 18 stations, all coinciding with the benchmarks of the local levelling lines (Fig. 8). The measurements are carried out two times for year.
Ischia : The network consists of 25 stations, most of which coinciding with the benchmarks of the local levelling lines; an absolute gravity station has been established at Casamicciola (Fig. 3). It is measured yearly.
Vulcano : The network consists of 26 stations, most of them coincides to altimetric benchmarks. The network belongs to a more extended one covering the whole Aeolian Archipelago; both networks are linked with the absolute gravity station established in 1990 at Milazzo (Sicily) (Fig. 5). The measurements are carried out three times for year.
Pantelleria : The network is constituted by 20 stations, most of which coinciding with benchmarks of the altimetric line (Fig. 6). It is measured yearly.
Vesuvio : The seismic network consists of 10 analogic short-period stations, including 1 three-component and 9 vertical geophones (Fig. 10). Seismic signals from remote stations are radio telemetred directly to the Surveillance Center. In the last 3 years, seven three-component digital stations were added to the permanent network.
Campi Flegrei : The Campi Flegrei seismic network is composed by 7 vertical component stations, all of which are centralized, through a composite transmission radio-cable, to the Surveillance Center (Fig. 2).
Ischia : The seismic network is composed by 2 vertical and 1 three-component analogic stations (Fig. 3). Signals are radiotransmitted to the Surveillance Center.
Campanian region : The regional network that surrounds the Napolitan volcanic area is composed by 6 three component and 3 vertical component stations. Signals are radiotransmitted to the Surveillance Center.
Structure and dynamics of volcanoes. Eruptive mechanisms. Eruptive history. Genesis and evolution of magmas. Modelling of volcanic eruptions. Volcanic hazard mapping. History of volcanology.
Information updated June 2003