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  • 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous  (8)
  • Copernicus Publications  (5)
  • AIQUA  (2)
  • MDPI Publishing
  • Nature Publishing Group
Collection
Keywords
Publisher
Years
  • 1
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    On a report that the 2012 M6:0 earthquake in Italy was predicted after seeing an unusual cloud formation (2015)
    Copernicus Publications
    In:  Guangmeng, G. and Jie, Y.: Three attempts of earthquake prediction with satellite cloud images, Nat. Hazards Earth Syst. Sci., 13, 91–95, doi:10.5194/nhess-13-91-2013, 2013.
    Details
    Publication Date: 2017-04-04
    Description: Several recently published reports have suggested that semi-stationary linear-cloud formations might be causally precursory to earthquakes.We examine the report of Guangmeng and Jie (2013), who claim to have predicted the 2012 M6:0 earthquake in the Po Valley of northern Italy after seeing a satellite photograph (a digital image) showing a linear-cloud formation over the eastern Apennine Mountains of central Italy. From inspection of 4 years of satellite images we find numerous examples of linear-cloud formations over Italy. A simple test shows no obvious statistical relationship between the occurrence of these cloud formations and earthquakes that occurred in and around Italy. All of the linearcloud formations we have identified in satellite images, including that which Guangmeng and Jie (2013) claim to have used to predict the 2012 earthquake, appear to be orographic – formed by the interaction of moisture-laden wind flowing over mountains. Guangmeng and Jie (2013) have not clearly stated how linear-cloud formations can be used to predict the size, location, and time of an earthquake, and they have not published an account of all of their predictions (including any unsuccessful predictions). We are skeptical of the validity of the claim by Guangmeng and Jie (2013) that they have managed to predict any earthquakes.
    Description: Published
    Description: 1061–1068
    Description: 1A. Geomagnetismo e Paleomagnetismo
    Description: JCR Journal
    Description: open
    Keywords: Atmosphere ; Earthquake precursors ; Clouds ; 01. Atmosphere::01.01. Atmosphere::01.01.99. General or miscellaneous ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Comment on “Ultra Low Frequency (ULF) European multi station magnetic field analysis before and during the 2009 earthquake at L’Aquila regarding regional geotechnical information” by Prattes et al. (2011) (2012)
    Copernicus Publications
    Details
    Publication Date: 2017-04-04
    Description: Prattes et al. (2011) report ULF magnetic anomalous signals claiming them to be possibly precursor of the 6 April 2009 MW6.3 L’Aquila earthquake. This comment casts doubts on the possibility that the observed magnetic signatures could have a seismogenic origin by showing that these pre-earthquake signals are actually part of normal global geomagnetic activity.
    Description: Published
    Description: 1717–1719
    Description: 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive
    Description: JCR Journal
    Description: open
    Keywords: Geomagnetic field ; Earthquake precursors ; Magnetic anomalies ; Seismology ; 04. Solid Earth::04.05. Geomagnetism::04.05.99. General or miscellaneous ; 04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    Limited overlap between the seismic gap and coseismic slip of the great 2010 Chile earthquake (2011)
    Nature Publishing Group
    Details
    Publication Date: 2017-04-04
    Description: The MW 8.8 mega-thrust earthquake and tsunami that occurred on February 27, 2010, offshore Maule region, Chile, was not unexpected. A clearly identified seismic gap existed in an area where tectonic loading has been accumulating since the great 1835 earthquake experienced and described by Darwin during the voyage of the Beagle. Here we jointly invert tsunami and geodetic data (InSAR, GPS, land-level changes), to derive a robust model for the co-seismic slip distribution and induced co-seismic stress changes, and compare them to past earthquakes and the pre-seismic locking distribution. We aim to assess if the Maule earthquake has filled the Darwin gap, decreasing the probability of a future shock . We find that the main slip patch is located to the north of the gap, overlapping the rupture zone of the MW 8.0 1928 earthquake, and that a secondary concentration of slip occurred to the south; the Darwin gap was only partially filled and a zone of high pre-seismic locking remains unbroken. This observation is not consistent with the assumption that distributions of seismic rupture might be correlated with pre-seismic locking, potentially allowing the anticipation of slip distributions in seismic gaps. Moreover, increased stress on this unbroken patch might have increased the probability of another major to great earthquake there in the near future.
    Description: Published
    Description: 173-177
    Description: 3.1. Fisica dei terremoti
    Description: 4.2. TTC - Modelli per la stima della pericolosità sismica a scala nazionale
    Description: JCR Journal
    Description: restricted
    Keywords: Source process ; Chile ; Tsunami ; Joint Inversion ; Seismic Gap ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress ; 04. Solid Earth::04.07. Tectonophysics::04.07.06. Subduction related processes ; 05. General::05.01. Computational geophysics::05.01.03. Inverse methods
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
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    Brief communication “On the recent reaffirmation of ULF magnetic earthquakes precursors” (2011)
    Copernicus Publications
    Details
    Publication Date: 2017-04-04
    Description: Hayakawa et al. (2009) and Hayakawa (2011) have recently reviewed some “anomalous” ULF signatures in the geomagnetic field which previous publications have claimed to be earthquake precursors. The motivation of this review is “to offer a further support to the definite presence of those anomalies”. Here, these ULF precursors are reviewed once again. This brief communication shows that the reviewed anomalies do not “increase the credibility on the presence of electromagnetic phenomena associated with an earthquake” since these anomalous signals are actually caused by normal geomagnetic activity. Furthermore, some of these ULF precursors have just been rebutted by previous publications.
    Description: Published
    Description: 2193-2198
    Description: 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive
    Description: JCR Journal
    Description: open
    Keywords: Earthquake precursors ; Short-term earthquake prediction ; Magnetic anomalies ; 04. Solid Earth::04.05. Geomagnetism::04.05.99. General or miscellaneous ; 04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
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    Ionospheric transients observed at mid-latitudes prior to earthquake activity in Central Italy (2010)
    Copernicus Publications
    Details
    Publication Date: 2017-04-04
    Description: Ionograms from Rome (41.8N, 12.5E) and Sofia (42.4N, 23.2E) ionospheric stations during earthquake(EQ)activity with magnitude(M)between 5 and 6 in Central Italy are analyzed. It is found that several ionospheric disturbances occur in the intermediate E-F region before the EQ shock. In fact, besides sporadic E (Es) layer development(of type h) of short duration (transients), fmin increase, trace gaps near the critical frequencies, and E region trace disappearance are also observed within one to three hours before the EQ shock. Before the EQ shocks we find that the F2 region parameters are practically undisturbed. The only exception is the so-called fork trace that appears mostly near the critical frequency of the F2 region. Acoustic gravity waves (AGW) are suggested as one of the possible sources of transients observed in the ionosphere before the EQ shock.
    Description: Published
    Description: 1197-1208
    Description: 1.7. Osservazioni di alta e media atmosfera
    Description: 3.1. Fisica dei terremoti
    Description: 3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale
    Description: JCR Journal
    Description: open
    Keywords: ionospheric transient ; ionogram ; earthquake ; acoustic gravity wave ; 01. Atmosphere::01.02. Ionosphere::01.02.99. General or miscellaneous ; 01. Atmosphere::01.02. Ionosphere::01.02.05. Wave propagation ; 01. Atmosphere::01.02. Ionosphere::01.02.06. Instruments and techniques ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
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    The 6 April 2009 earthquake at L’Aquila: a preliminary analysis of magnetic field measurements (2010)
    Copernicus Publications
    Details
    Publication Date: 2017-04-04
    Description: Several investigations reported the possible identification of anomalous geomagnetic field signals prior to earthquake occurrence. In the ULF frequency range, candidates for precursory signatures have been proposed in the increase in the noise background and polarization parameter (i.e. the ratio between the amplitude/power of the vertical component and that one of the horizontal component), in the changing characteristics of the slope of the power spectrum and fractal dimension, in the possible occurrence of short duration pulses. We conducted, with conventional techniques of data processing, a preliminary analysis of the magnetic field observations performed at L’Aquila during three months preceding the 6 April 2009 earthquake, focusing attention on the possible occurrence of features similar to those identified in previous events. Within the limits of this analysis, we do not find compelling evidence for any of the features which have been proposed as earthquake precursors: indeed, most of aspects of our observations (which, in some cases, appear consistent with previous findings) might be interpreted in terms of the general magnetospheric conditions and/or of different sources.
    Description: Published
    Description: 203-214
    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: magnetic field measurements ; L'Aquila earthquake ; 01. Atmosphere::01.03. Magnetosphere::01.03.03. Magnetospheric physics ; 04. Solid Earth::04.05. Geomagnetism::04.05.99. General or miscellaneous ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 7
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    Terremoto de L’Aquila del 6 aprile 2009: rilievo macrosismico, distribuzione delle intensità macrosismiche ed implicazioni sismotettoniche (2010)
    AIQUA
    Details
    Publication Date: 2022-06-14
    Description: Viene dato ragguaglio sulle operazioni di rilievo macrosismico relative al terremoto aquilano del 6 Aprile 2009 (Mw=6.3; Io=IX MCS) condotte dal QUEST e del risultato conseguito in termini di distribuzione delle intensità per 316 località visitate. Il terremoto, che ha provocato la distruzione di numerosi centri della conca Aquilana ed oltre 300 vittime, mostra un’area mesosimica allungata in direzione NW-SE, con una coda di forti risentimenti verso SE nella conca subèquana. Questo è in accordo con la geometria, cinematica e dinamica della rottura della struttura sismogenetica, individuata anche grazie alle evidenze di fagliazione di superficie seguite per circa 20 km lungo il versante nordorientale della Valle dell’Aterno, tra Collebrincioni e San Demetrio ne’ Vestini (sistema di faglie di Paganica-San Demetrio). Tale struttura viene anche indicata responsabile del terremoto “gemello” del 1461, oltre che da eventi di più elevata energia, come analisi paleosismologiche e rilievi geologici in corso hanno confermato.
    Description: Published
    Description: 1.11. TTC - Osservazioni e monitoraggio macrosismico del territorio nazionale
    Description: N/A or not JCR
    Description: open
    Keywords: L'Aquila 2009 ; macroseismics ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 8
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    Studio macrosismico del terremoto del Gran Sasso (Italia centrale) del 5 settembre 1950: implicazioni sismotettoniche (2007)
    AIQUA
    Details
    Publication Date: 2017-04-04
    Description: Il 5 settembre 1950 alle ore 04.08 (GMT), un forte terremoto fu avvertito in tutta l’Italia centrale e arrecò gravi danni in diversi centri abitati delle province di Teramo, Pescara, L’Aquila e Rieti. Questo evento è considerato il massimo terremoto storico avvenuto nell’area del Gran Sasso d’Italia, zona che, secondo i cataloghi sismici italiani è caratterizzata da un’attività sismica relativamente modesta. Al contrario le zone circostanti sono sede di sismicità più frequente e di forti terremoti storici. Questo lavoro è uno studio di revisione del terremoto che colpì l'area del 5 settembre 1950 e del periodo sismico che ne seguì tra il 1950 e il 1951. Scopo della ricerca è quello di ampliare il quadro delle conoscenze su questo sisma e di inquadrarlo nel contesto sismotettonico dell'area. La ricerca ha condotto al reperimento di moltissimi documenti originali, sinora inediti, sia relativi alla scossa del 5 settembre 1950, che a quella dell’8 agosto 1951 che rappresenta l’evento più forte del periodo sismico successivo alla scossa principale. I risultati riguardano una maggiore completezza delle informazioni sul terremoto, anche relativamente al ruolo delle repliche nel quadro del danneggiamento. Il numero dei punti di intensità risulta triplicato rispetto a quanto finora conosciuto. Gli elementi di analisi contribuiscono al calcolo di nuovi parametri ipocentrali e a fornire una ipotesi interpretativa riguardo alla sorgente responsabile del terremoto. In base ai dati acquisiti sulla distribuzione del danno è possibile ipotizzare che il terremoto del 1950 sia stato causato da una sorgente con direzione circa E-O, al di sotto dell’edificio strutturale della Laga, tra Campotosto e Pietracamela.
    Description: Published
    Description: 195-214
    Description: reserved
    Keywords: Gran sasso d'Italia, ; terremoto del 1950 ; macrosismica ; sismotettonica ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Format: 8708396 bytes
    Format: application/pdf
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