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    <link>http://hdl.handle.net/2122/210</link>
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        <rdf:li resource="http://hdl.handle.net/2122/8092" />
        <rdf:li resource="http://hdl.handle.net/2122/7948" />
        <rdf:li resource="http://hdl.handle.net/2122/7744" />
        <rdf:li resource="http://hdl.handle.net/2122/7358" />
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    <dc:date>2013-05-19T14:44:51Z</dc:date>
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  <item rdf:about="http://hdl.handle.net/2122/8092">
    <title>Rete gravimetrica di precisione all'isola di Pantelleria. Monografie delle stazioni. Situazione al mese di luglio 2011</title>
    <link>http://hdl.handle.net/2122/8092</link>
    <description>Title: Rete gravimetrica di precisione all'isola di Pantelleria. Monografie delle stazioni. Situazione al mese di luglio 2011
Authors: Berrino, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; d'Errico, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; Ricciardi, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; Del Gaudio, M.; PROGETTO DI SERVIZIO CIVILE “NOI E I VULCANI” (INGV, Sezione di Napoli - Osservatorio Vesuviano)</description>
    <dc:date>2011-12-31T23:00:00Z</dc:date>
  </item>
  <item rdf:about="http://hdl.handle.net/2122/7948">
    <title>Ancient Life's Gravity and its Implications for the Expanding Earth</title>
    <link>http://hdl.handle.net/2122/7948</link>
    <description>Title: Ancient Life's Gravity and its Implications for the Expanding Earth
Authors: Hurrell, Stephen
Editors: Scalera, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia; Cwojdzinski, S.
Abstract: A study of scale effects and gravity reveals that the relative scale of life would vary in different gravities. The large relative scale of ancient life indicates that ancient gravity was weaker and this has implications for the Expanding Earth theory.</description>
    <dc:date>2011-10-03T22:00:00Z</dc:date>
  </item>
  <item rdf:about="http://hdl.handle.net/2122/7744">
    <title>Extended abstracts book of the Workshop ‘The Earth Expansion Evidence’ 37th Interdisciplinary Workshop of the International School of Geophysics</title>
    <link>http://hdl.handle.net/2122/7744</link>
    <description>Title: Extended abstracts book of the Workshop ‘The Earth Expansion Evidence’ 37th Interdisciplinary Workshop of the International School of Geophysics
Authors: Scalera, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia; Cwojdzinski, S.; Polish Geological Survey
Editors: Scalera, Giancarlo; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia; Cwojdzinski, Stefan; Polish Geological Survey
Abstract: It is a collection of extended abstracts</description>
    <dc:date>2011-10-03T22:00:00Z</dc:date>
  </item>
  <item rdf:about="http://hdl.handle.net/2122/7358">
    <title>New geophysical insight into the dynamics of Stromboli volcano (Italy)</title>
    <link>http://hdl.handle.net/2122/7358</link>
    <description>Title: New geophysical insight into the dynamics of Stromboli volcano (Italy)
Authors: Carbone, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia; Zuccarello, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia; Montalto, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia; Rymer, H.; The Open University, Department of Earth and Environmental Sciences, Walton Hall, Milton Keynes, MK7 6AA, UK
Abstract: A 56-hour gravity sequence, recorded in the crater area of Stromboli volcano, is presented. Data were acquired during a period of “normal” strombolian activity. High-frequency gravity anomalies (up to 20 microGal; T = tens of seconds) are observed. Comparison with independent data reveals that these changes reflect the response of the gravimeter excited by seismic waves during strombolian explosions.&#xD;
Correlated changes in the energy distribution over time appear in the continuous wavelet transforms of gravity and RMS-tremor, but over different scales, corresponding to periods centered at about 50 and 25 minutes, for gravity and tremor, respectively. We infer that the rate of fresh magma supply to the shallow feeding system controls the energy distribution over time of the coupled components in gravity and RMS-tremor signals. In particular, the gravity signal (with an average amplitude of 1-2 microGal) could be induced by temporary accumulations, at shallow depth, of the volatiles discharged by quiescent degassing.&#xD;
Changes in the rate of explosions from the summit craters correlate with changes in the amplitude of the coupled gravity and volcanic tremor oscillations, implying that, even though the slug-genesis process behind the explosions occurs at deeper levels, it is also controlled by the rate of gas-rich magma supply from below.&#xD;
Negative gravity anomalies of about 20 microGal, over intervals of some hours, are also observed, separated by intervals of about 24 hours. They could be induced by increases in magma vescicularity in the uppermost part of the conduit plexus, a view supported by (i) changes in the time/space distribution of tremor amplitudes and (ii) increases in spattering activity from a summit vent, both occurring during the development of the negative gravity anomalies.&#xD;
The processes behind mild Strombolian explosions do not trigger measurable gravity changes. Nevertheless, the slug ascent before a major explosion could induce a precursory gravity signal.</description>
    <dc:date>2011-12-31T23:00:00Z</dc:date>
  </item>
  <item rdf:about="http://hdl.handle.net/2122/7151">
    <title>Simultaneous inversion of surface deformation and gravity changes by means&#xD;
of extended bodies with a free geometry: Application to deforming calderas</title>
    <link>http://hdl.handle.net/2122/7151</link>
    <description>Title: Simultaneous inversion of surface deformation and gravity changes by means&#xD;
of extended bodies with a free geometry: Application to deforming calderas
Authors: Camacho, A. G.; Instituto de Astronomía y Geodesia, CSIC‐UCM, Madrid, Spain.; González, P. J.; Department of Earth Sciences, University of Western Ontario, London, Ontario, Canada; Fernández, J.; Instituto de Astronomía y Geodesia, CSIC‐UCM, Madrid, Spain.; Berrino, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia
Abstract: Changes in gravity and/or surface deformation are often associated with volcanic&#xD;
activity. Usually, bodies with simple geometry (e.g., point sources, prolate or oblate&#xD;
spheroids) are used to model these signals considering anomalous mass and/or pressure&#xD;
variations. We present a new method for the simultaneous, nonlinear inversion of gravity&#xD;
changes and surface deformation using bodies with a free geometry. Assuming simple&#xD;
homogenous elastic conditions, the method determines a general geometrical configuration&#xD;
of pressure and density sources. These sources are described as an aggregate of pressure&#xD;
and density point sources, fitting the whole data set (given some regularity conditions). The&#xD;
approach works in a growth step‐by‐step process that allows us to build very general&#xD;
geometrical configurations. The methodology is validated against an ellipsoidal body with&#xD;
anomalous pressure and a parallelepiped body with anomalous density, buried in an elastic&#xD;
medium. The simultaneous inversion of deformation and gravity values permits a good&#xD;
reconstruction of the assumed bodies. Finally, the inversion method is applied to the&#xD;
interpretation of gravity, leveling, and interferometric synthetic aperture radar (InSAR)&#xD;
data from the volcanic area of Campi Flegrei (Italy) for the period 1992–2000. For this&#xD;
period, a model with no significant mass change and an extended decreasing pressure&#xD;
region satisfactorily fits the data. The pressure source is located at about ∼1500 m depth,&#xD;
and it is interpreted as corresponding to the dynamics of the shallow (depth 1–2 km)&#xD;
hydrothermal system confined to the caldera fill materials.</description>
    <dc:date>2010-12-31T23:00:00Z</dc:date>
  </item>
  <item rdf:about="http://hdl.handle.net/2122/6738">
    <title>MISURE GRAVIMETRICHE ALL’ISOLA DI PANTELLERIA</title>
    <link>http://hdl.handle.net/2122/6738</link>
    <description>Title: MISURE GRAVIMETRICHE ALL’ISOLA DI PANTELLERIA
Authors: Berrino, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; D'Errico, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; Ricciardi, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia
Abstract: Nel mese di giugno 2009 è stata condotta una campagna gravimetrica di precisione all’isola di Pantelleria, dove le misure vengono effettuate con una periodicità biennale data la debole attività dell’isola. Le misure sono state rilevate sull’intera rete che è costituita da 24 stazioni (figura 1), molte delle quali ubicate su vertici della locale linea di livellazione e tutte collegate a due stazioni assolute istituite nel 1993 rispettivamente a Pantelleria e a Khamma</description>
    <dc:date>2010-03-31T22:00:00Z</dc:date>
  </item>
  <item rdf:about="http://hdl.handle.net/2122/6736">
    <title>MISURE GRAVIMETRICHE AI CAMPI FLEGREI - RENDICONTO SULL’ATTIVITA’ DI SORVEGLIANZA SVOLTA NEL 2009</title>
    <link>http://hdl.handle.net/2122/6736</link>
    <description>Title: MISURE GRAVIMETRICHE AI CAMPI FLEGREI - RENDICONTO SULL’ATTIVITA’ DI SORVEGLIANZA SVOLTA NEL 2009
Authors: Berrino, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; D'Errico, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; Ricciardi, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia
Abstract: Nel 2009 sono state svolte, ai Campi Flegrei, due campagne gravimetriche a cavallo dei mesi di febbraio e marzo la prima e a novembre la seconda. Le misure sono state rilevate sull’intera rete che è costituita da 28 vertici...</description>
    <dc:date>2010-04-07T22:00:00Z</dc:date>
  </item>
  <item rdf:about="http://hdl.handle.net/2122/6733">
    <title>GRAVIMETRIA ISOLA DI VULCANO - RENDICONTO SULL’ATTIVITA’ DI SORVEGLIANZA SVOLTA NEL 2009</title>
    <link>http://hdl.handle.net/2122/6733</link>
    <description>Title: GRAVIMETRIA ISOLA DI VULCANO - RENDICONTO SULL’ATTIVITA’ DI SORVEGLIANZA SVOLTA NEL 2009
Authors: Berrino, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; D'Errico, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; Ricciardi, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia
Abstract: Nel mese di settembre 2009 è stata effettuata una campagna di misure gravimetriche di precisione all’isola di Vulcano. La rete gravimetrica, collegata alla stazione assoluta di gravità di Milazzo assunta quale riferimento, consta di 32 stazioni..</description>
    <dc:date>2010-03-31T22:00:00Z</dc:date>
  </item>
  <item rdf:about="http://hdl.handle.net/2122/6731">
    <title>MISURE GRAVIMETRICHE AL VESUVIO - RENDICONTO SULL’ATTIVITA’ DI SORVEGLIANZA SVOLTA NEL 2009</title>
    <link>http://hdl.handle.net/2122/6731</link>
    <description>Title: MISURE GRAVIMETRICHE AL VESUVIO - RENDICONTO SULL’ATTIVITA’ DI SORVEGLIANZA SVOLTA NEL 2009
Authors: Berrino, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; D'Errico, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; Ricciardi, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia
Abstract: Nei mesi di aprile e dicembre 2009 sono state eseguite due campagne gravimetriche nell’area vesuviana. In entrambe le campagne, le misure sono state condotte sull’intera rete, costituita da 32 vertici...</description>
    <dc:date>2010-04-05T22:00:00Z</dc:date>
  </item>
  <item rdf:about="http://hdl.handle.net/2122/6730">
    <title>Modelling of InSAR (LOS) changes by means of 3D extended pressured bodies with free geometry. Application to Campi Flegrei.</title>
    <link>http://hdl.handle.net/2122/6730</link>
    <description>Title: Modelling of InSAR (LOS) changes by means of 3D extended pressured bodies with free geometry. Application to Campi Flegrei.
Authors: Camacho, A.G; Inst. Astronomia y Geodesia (CSIC-UCM), Madrid; Fernandez, J.; Inst. Astronomia y Geodesia (CSIC-UCM), Madrid; Gonzalez, P.J.; Inst. Astronomia y Geodesia (CSIC-UCM), Madrid; Berrino, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia
Abstract: InSAR measures can provide information about changes in distance between the ground and the satellite in radar&#xD;
line-of-sight (LOS) direction. Sometimes, as in the case of volcanic activity, the corresponding ground deformations&#xD;
can be modeled by means of pressure and/or mass sources. Usually, point sources and regular prolate or&#xD;
oblate bodies are used as source geometry for deformation. In this communication, we show a new method for&#xD;
non-linear inversion of position and gravity changes as produced by extended bodies with a free geometry. Their&#xD;
structures are described as aggregation of elemental sources with anomalous density and pressure, and they are&#xD;
modeled to fit the whole data and to keep some regularity conditions. A growth process permits to build general&#xD;
geometrical configurations. The method is tested by application to data of gravity and InSAR (LOS data for ascending&#xD;
and descending orbits) for the volcanic area of Campi Flegrei (Italy). Results are drawn with respect a&#xD;
structural gravimetric model and compared with previous models.</description>
    <dc:date>2009-12-31T23:00:00Z</dc:date>
  </item>
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