Options
Gizzi, Cesidio
Loading...
Preferred name
Gizzi, Cesidio
Alternative Name
Gizzi, C.
Email
cesidio.gizzi@ingv.it
Staff
staff
4 results
Now showing 1 - 4 of 4
- PublicationOpen AccessPartitioning the Ongoing Extension of the Central Apennines (Italy): Fault Slip Rates and Bulk Deformation Rates From Geodetic and Stress Data(2020)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; We investigated whether the joint inversion of geodetic and stress direction data can constrain long‐term fault slip rates in the central Apennines, and ultimately how extension is partitioned among fault slip and bulk lithosphere permanent strain. Geodetic velocities are collected in the fault interseismic stage with steady secular deformation; thus, long‐term estimates can be derived with a model of elastically unloading seismogenic faults within a viscously deforming lithosphere. As the average spacing of permanent Global Navigation Satellite Systems (GNSS) stations is similar to the average length of seismogenic faults (25–35 km), if not larger, we decided to merge permanent and temporary GNSS measurements, resulting in a denser geodetic data set. Given that most normal faults in the Apennines have slip rates around or below 1 mm/a, and most campaign GNSS velocities carry similar uncertainties, simple local back slip models cannot be applied. More sophisticated modeling is required to extract reasonable bulk deformation rates and long‐term fault slip rates at signal‐to‐noise ratio of order unity. Given the spatial distribution of the GNSS network, we estimated the long‐term slip rate of seven major fault systems that are in satisfactory agreement with available geological slip rates. The resulting spatial distribution of bulk deformation rates locally fits short‐term transients; in other cases, they represent the currently unclear signature of tectonic processes like upper‐crustal viscoplastic deformation and aseismic slip, or indicate missing faults in the adopted database. We conclude that the time is ripe for determining fault slip rates using geodetic and stress direction data, particularly where fault activity rates are hard to determine geologically.530 80 - PublicationOpen AccessTHE REALIZATION OF A NEW GEOMAGNETIC OBSERVATORY IN CENTRAL ITALY, REPLACING L'AQUILA GEOMAGNETIC OBSERVATORY(2012-06)
; ; ; ; ; ; ; ;Palangio, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Lepidi, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Pietrolungo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Biasini, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Di Persio, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Gizzi, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Meloni, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia; ; ; ; ; ; ; ; ; ; ;Hejda, P.; REAL INSTITUTO Y OBSERVATORIO DE LA ARMADA EN SAN FERNANDO ;Chulliat, A.; REAL INSTITUTO Y OBSERVATORIO DE LA ARMADA EN SAN FERNANDO ;Catalán, M.; REAL INSTITUTO Y OBSERVATORIO DE LA ARMADA EN SAN FERNANDO; ; The geomagnetic Observatory of L'Aquila was founded by Istituto Nazionale di Geofisica e Vulcanologia (INGV) in 1958, on the occasion of the International Geophysical Year. It is the main Italian geomagnetic observatory and since 1999 is part of the Intermagnet network. In 2009 L’Aquila was struck by a strong earthquake; the town was seriously damaged, and since then many activities moved to the suburbs; close to the Geomagnetic Observatory new activities were planned. Then the necessity to find in the surroundings a new place, suitable for the installation of a Geomagnetic Observatory, arose. Several tests were made and a possible location was found in Castel Del Monte, 40km from L’Aquila; a preliminary analysis of the electromagnetic background noise and of the spatial magnetic field gradients has shown that the place can meet the requirements for a Geomagnetic Observatory. Meanwhile, in 2010, a new Geomagnetic Observatory was installed in Duronia, 130 km South-East from L’Aquila and since 2012 it is part of the Intermagnet network.280 172 - PublicationOpen AccessCorrezione alla deriva dei valori di base sui dati geomagnetici dell’osservatorio dell’Aquila, primi risultati(2019)
; ; ; ; ; ; ; ; ; La ricerca scientifica, per avere successo, ha bisogno di potersi affidare a dati validi. Gli strumenti magnetici, in particolare i magnetometri triassiali, possono essere soggetti a derive per vari motivi come variazioni di temperatura, perdita di allineamento, perdita di livellamento. Tutti questi eventi possono avere effetti spuri sui dati registrati. In questo articolo mostriamo la caratterizzazione di uno di questi casi, la perdita di livellamento e la modificazione riscontrabile sui dati, nonché la procedura usata per correggere gli effetti sui valori numerici registrati.470 41 - PublicationOpen AccessMagnetic Field Observations Close to the Epicenter of the 2009 L´Aquila Earthquake.(2012-06-04)
; ; ; ;Masci, Fabrizio; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Manuele, Di Persio; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Cesidio, Gizzi; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia; ; On 6 April 2009 a seismic sequence culminated with the Mw6.3 main shock which heavily damaged the town of L’Aquila. Here, we report the analysis of ULF magnetic field data from the Geomagnetic Observatory of L’Aquila during the period 2008-2009. Magnetic data are investigated by means of conventional techniques of polarization ratio and fractal analysis. In addition, total geomagnetic field data from the INGV Central Italy tectonomagnetic network were also investigated using the simple inter-station differentiation method. Our study does not show any anomalous signal that could be undoubtedly related to the seismic activity.191 204