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  • 1
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    Magnetic and Electromagnetic signals related to tectonic activity: updates and new analyses on measurements in Central Italy (2008)
    EGU - Copernicus GmbH
    Details
    Publication Date: 2017-04-04
    Description: Tectonomagnetic field observations from absolute magnetic field levels have been collected in Central Italy since 1989 by means of a network of four absolute magnetometer stations, including the geomagnetic observatory of L’Aquila (42 23 N, 13 19 E) used as reference for differentiation; also electromagnetic variations from VLF signals have been recorded in the last years by means of VLF search coil wide-band antennas. Many reports proved the occurrence of electromagnetic effects clearly related to tectonic events (seismic and volcanic activity) in active areas of our planet. In this paper we show the variation of some electromagnetic parameters which could be related to local and regional seismic activity for the most recent years 2002 and 2003. We also report the seismic activity recorded in this area by the Italian seismic national network. Some tentative analysis (in the wavelets and statistical approach) on the historical and recent dataset allow a better characterization of electromagnetic properties of the study area, at different temporal and spatial scales.
    Description: Published
    Description: 925-930
    Description: 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive
    Description: N/A or not JCR
    Description: open
    Keywords: Magnetic and Electromagnetic signals ; Tectonic activity ; Central Italy ; 04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies ; 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Towards the Opening of a Magnetic Observatory at Dome C (Antarctica) (2008)
    Details
    Publication Date: 2017-04-04
    Description: The opening of a new magnetic observatory is one of the activities aimed at by the creation of a scientific base at DomeC, Antarctica (lat. 75° 06’S, long. 123° 21’E, elev. 3200m). There are many reasons supporting this objective: all Antarctic magnetic observatories providing absolute values are located along the shore and are therefore subject to coast effects and crustal field contamination. DomeC and Vostok will be so far the sole observatories free from these effects. On one hand, high latitude absolute observatories are very useful to global or regional modeling based upon satellite data, because, at high latitudes, only total field measurements can be used due to the strong influence of field aligned currents. On the other hand, the availability of magnetic data from the well distributed observatories of Terra Nova Bay (TNB), Scott Base (SBA), Dumont d’Urville (DRV), Casey (CSY) and Vostok (VOS) will provide strong support to auroral and polar cap ionosphere studies as well as asymmetry analyses between Northern and Southern hemispheres. This paper summarizes the results gathered during three summer campaigns, in 1999-2000, 2001 and 2003-2004.
    Description: Published
    Description: Kakioka Magnetic Observatory / Tsukuba Center for Institutes, Japan
    Description: 1.6. Osservazioni di geomagnetismo
    Description: 3.4. Geomagnetismo
    Description: open
    Keywords: Antarctica ; Magnetic observatory ; Dome C ; 04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 3
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    Preliminary results from the first geomagnetic deep sounding in the western sector of the anti atlas region, southern Morocco (2008)
    Details
    Publication Date: 2017-04-04
    Description: An array of vector magnetometers was temporarily installed in the Western sector of the Anti Atlas chain, Morocco in the frame of the Geomagnetic Depth Sounding (GDS) technique. As a fruitful collaboration between Italy and Morocco, the joint project “Terremagnet”, funded by the Italian Ministry of the Foreign Affair, was aimed to local observations of the earth’s magnetic field in order to define electric conductivity horizontal and vertical contrasts in a tectonic active region. The analysis in time and frequency-domain for tests on the induced EM field dimension, computations of single site and coupled site Transfer Functions (TFs) and induction vectors configuration are shown. Recorded data are compared to Averroes geomagnetic observatory (Morocco) (IAGA code: AVE, lat. 33° 17’ 53” N, long. 7° 24’ 48” W, altitude: 230 m a.s.l.). The preliminary results from Morocco are really encouraging and pointed out good data samplings that will allow shedding up light on the tectonic setting of this peculiar region of the Anti-Atlas.
    Description: Not submitted
    Description: 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive
    Description: 3.4. Geomagnetismo
    Description: N/A or not JCR
    Description: open
    Keywords: GDS, EM Induction ; 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring ; 04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: manuscript
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  • 4
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    GEOSTAR deep seafloor missions: magnetic data analysis and 1D geoelectric structure underneath the Southern Tyrrhenian Sea (2008)
    INGV
    Details
    Publication Date: 2017-04-04
    Description: From 2000 to 2005 two exploring geophysical missions were undertaken in the Tyrrhenian deep seafloor at depths between around -2000 and -3000 m in the framework of the European-funded GEOSTAR Projects. The considered missions in this work are GEOSTAR-2 and ORIONGEOSTAR-3 with the main scientific objective of investigating the deep-sea by means of an automatic multiparameter benthic observatory station working continuously from around 5 to 12 months each time. During the two GEOSTAR deep seafloor missions, scalar and vector magnetometers acquired useful magnetic data both to improve global and regional geomagnetic reference models and to infer specific geoelectric information about the two sites of magnetic measurements by means of a forward modelling.
    Description: In press
    Description: 1.6. Osservazioni di geomagnetismo
    Description: 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive
    Description: 3.4. Geomagnetismo
    Description: JCR Journal
    Description: open
    Keywords: GEOSTAR ; Tyrrhenian Sea ; deep seafloor ; electrical conductivity ; lithosphere ; 04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals ; 04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies ; 04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
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    Terra Nova Bay, Antarctica, Geomagnetic observatory, magnetic observations results, 2001-2002, 2002-2003 (2007)
    Details
    Publication Date: 2017-04-04
    Description: These reports deal with activities undertaken at the Geomagnetic Observatory TNB in Antarctica during the austral summers 2001-2002 and 2002-2003. Since the Observatory was located very close to the Base, where the growing human activity gave rise to an increased artificial electromagnetic noise, during this campaign, the Observatory has been moved to a new site, called OASI, about 1 km away from the old site. In austral summer 2001-2002, geomagnetic absolute measurements have been performed at both sites, in order to evaluate possible spatial gradients between them. Conversely, the variometer measurements have been carried out only at the new site.
    Description: Istituto Nazionale di geofisica e Vulcanologia
    Description: Published
    Description: 1.6. Osservazioni di geomagnetismo
    Description: open
    Keywords: geomagnetic observatory ; Antarctica ; 04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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  • 6
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    Three years continuous record of the Earth's magnetic field at Concordia station (DomeC, Antarctica) (2008)
    Details
    Publication Date: 2017-04-04
    Description: The magnetic observatory deployed at DomeC, Antarctica, in the French-Italian base known as Concordia base, is now permanently running for more than three years. This paper focuses on these long-term results which are more relevant for an observatory intended to provide absolute values of the field. The problems which came up in the light of this fairly long record are discussed and solutions suggested in order to upgrade the observatory to the standards of an absolute one (i.e. Intermagnet standards).
    Description: Submitted
    Description: 1.6. Osservazioni di geomagnetismo
    Description: 3.4. Geomagnetismo
    Description: 3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale
    Description: JCR Journal
    Description: open
    Keywords: Geomagnetic observatory ; Antarctica ; 04. Solid Earth::04.05. Geomagnetism::04.05.03. Global and regional models ; 04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies ; 04. Solid Earth::04.05. Geomagnetism::04.05.05. Main geomagnetic field
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: manuscript
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  • 7
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    GEOSTAR deep seafloor missions: magnetic data analysis and 1D geoelectric structure underneath the Southern Tyrrhenian Sea (2009)
    INGV
    Details
    Publication Date: 2017-04-04
    Description: From 2000 to 2005 two geophysical exploration missions were undertaken in the Tyrrhenian deep seafloor at depths between -2000 and -3000 m in the framework of the European-funded GEOSTAR Projects. The considered missions in this work are GEOSTAR-2 and ORION-GEOSTAR-3 with the main scientific objective of investigating the deep-seafloor by means of an automatic multiparameter benthic observatory station working continuously from around 5 to 12 months each time. During the two GEOSTAR deep seafloor missions, scalar and vector magnetometers acquired useful magnetic data both to improve global and regional geomagnetic reference models and to infer specific geoelectric information about the two sites of magnetic measurements by means of a forward modelling.
    Description: Published
    Description: 57-63
    Description: 1.6. Osservazioni di geomagnetismo
    Description: 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive
    Description: 3.4. Geomagnetismo
    Description: JCR Journal
    Description: open
    Keywords: GEOSTAR ; Tyrrhenian Sea ; deep seafloor ; electrical conductivity ; lithosphere ; 04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals ; 04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies ; 04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 8
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    Geomagnetic observatories in Antarctica; state of the art and a perspective view in the global and regional frameworks (2007)
    Details
    Publication Date: 2017-04-04
    Description: The Earth is immersed in a planetary magnetic field. The field is generated in the Earth's core and can be measured at its surface. It shows mainly a typical dipolar profile with the dipole axis roughly parallel to the Earth’s rotation axis (tilting about 12°). At low latitudes the field reaches its minimum, while its maximum intensity is observable in polar regions, reaching there almost three times its equatorial value. The region around the Earth where the geomagnetic field extends is known as the Earth's magnetosphere. This region contains a very low density gas of electrically charged particles and is the space around the Earth where many electric and magnetic phenomena happen.
    Description: Unpublished
    Description: 1.6. Osservazioni di geomagnetismo
    Description: N/A or not JCR
    Description: open
    Keywords: Geomagnetism ; geomagnetic observatories ; Antarctica ; 04. Solid Earth::04.05. Geomagnetism::04.05.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: manuscript
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  • 9
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    Update on monitoring of magnetic and electromagnetic tectonic signals in central italy (2007)
    Details
    Publication Date: 2017-04-04
    Description: A network of three absolute magnetometer stations and the geomagnetic Observatory of L'Aquila (42º 23N, 13º 19E) allow to monitor possible seismo- or tectonomagnetic effects in Central Italy, using L’Aquila observatory as a reference for differentiation. A system of two VLF search coil wide-band antennas, working in two different frequency bands, at the L’Aquila Observatory, allows to monitor possible electromagnetic effects related to seismic events occurring in Central Italy. Absolute magnetic field observations and VLF signals have been collected for several years. In particular the tectono-magnetic network started its operations in 1989. In this paper we report on the time variation of above mentioned data for the most recent years 2002 and 2003, also in connection to older measurements time series; we also report on seismic activity recorded in this area by the national seismic network. In the above mentioned time interval, no strong earthquake activity was recorded, and at the same time no clear evidence for magnetic or electromagnetic signals related to seismic events was found.
    Description: Unpublished
    Description: open
    Keywords: tectonomagnetism ; seismomagnetic network ; 04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: manuscript
    Format: 64531 bytes
    Format: application/pdf
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  • 10
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    Terra Nova Bay, Antarctica, Geomagnetic observatory, magnetic observations results, 2003-2004, 2004-2005 (2008)
    Details
    Publication Date: 2017-04-04
    Description: This report deals with activities undertaken at the Antarctic Italian Geomagnetic Observatory during the austral summer 2003-2004. The coordinates of the Observatory at OASI are the following: Geographic latitude: 74.6936°S Geographic longitude: 164.0975°E Corrected Geomagnetic latitude (IGRF00): 80.00°S Corrected Geomagnetic longitude (IGRF00): 306.94°E Magnetic local time midnight: 08:11 UT This report describes the activities performed from November 9, 2003 to December 3, 2004. For the present work H, D, and Z INTERMAGNET formatted data from the fluxgate magnetometer have been used.
    Description: Istituto Nazionale di Geofisica e Vulcanologia
    Description: Published
    Description: 1.6. Osservazioni di geomagnetismo
    Description: open
    Keywords: geomagnetic observatory ; Antarctica ; 04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniques ; 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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