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  • Articles  (4)
  • Other Sources  (819)
  • Earthquake hazard
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  • Articles  (4)
  • Other Sources  (819)
  • 1
    Publication Date: 2018-03-21
    Description: To communicate the importance of knowing the risk of non-structural damage caused by earthquakes, we developed applications based on Augmented Reality (AR) features. These applications run on mobile devices, such as tablets and smartphones, by using their video camera and other on-board sensors, such as GPS, accelerometer, and gyrocompass, from which AR users do take advantage. Combined with a specifically designed exhibit, our AR applications can contribute to increase the common awareness on seismic risk, providing useful information on how to have safer homes in case of an earthquake. Building codes do not take into account non-structural elements, leaving communities at risk of injuries, blocking escapes and even causing deaths. In this framework, the personal preparedness is of paramount importance. The development of our AR applications is supported by the European project KnowRISK (Know your city, Reduce seISmic risK through non-structural elements).
    Description: Published
    Description: Reykjavik, Iceland
    Description: 2TM. Divulgazione Scientifica
    Keywords: Non-structural damage ; Earthquake hazard ; Augmented reality ; Risk reduction ; Dissemination ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 2
    Publication Date: 2022-05-25
    Description: This paper is not subject to U.S. copyright. The definitive version was published in Geophysical Research Letters 39 (2012): L10304, doi:10.1029/2012GL051485.
    Description: Kinematic similarities between the Sumatra and Puerto Rico Trenches highlight the potential for a mega-earthquake along the Puerto Rico Trench and the generation of local and trans-Atlantic tsunamis. We used the horizontal components of continuous GPS (cGPS) measurements from 10 sites on NE Caribbean islands to evaluate strain accumulation along the North American (NA) – Caribbean (CA) plate boundary. These sites move westward and slightly northward relative to CA interior at rates ≤2.5 mm/y. Provided this motion originates in the subduction interface, the northward motion suggests little or no trench-perpendicular thrust accumulation and may in fact indicate divergence north of Puerto Rico, where abnormal subsidence, bathymetry, and gravity are observed. The Puerto Rico Trench, thus, appears unable to generate mega-earthquakes, but damaging smaller earthquakes cannot be discounted. The westward motion, characterized by decreasing rate with distance from the trench, is probably due to eastward motion of CA plate impeded at the plate boundary by the Bahamas platform. Two additional cGPS sites in Mona Passage and SW Puerto Rico move to the SW similar to Hispaniola and unlike the other 10 sites. That motion relative to the rest of Puerto Rico may have given rise to seismicity and normal faults in Mona Rift, Mona Passage, and SW Puerto Rico.
    Keywords: Lesser Antilles ; Puerto Rico trench ; Virgin Islands ; Earthquake hazard ; Subduction zone coupling ; Tsunami hazard
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: text/plain
    Format: application/pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Natural hazards 3 (1984), S. 1-13 
    ISSN: 1573-0840
    Keywords: Earthquake hazard ; incomplete and uncertain data
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract The maximum likelihood estimation of earthquake hazard parameters (maximum regional magnitudem max, activity rate λ, and theb parameter in the Gutenberg-Richter distribution) is extended to the cases of incomplete and uncertain data. The method accepts mixed data containing only large (extreme) events and a variable quality of complete data with different threshold magnitude values. Uncertainty of earthquake magnitude is specified by two values, the lower and upper magnitude limits. It is assumed that such an interval contains the real unknown magnitude. The proposed approach allows the combination of different quality catalog parts, e.g. those where the assignment of magnitude is questionable and those with magnitudes precisely determined. As an illustration of the method, the seismic hazard analysis for western Norway and adjacent sea area (4–8°E, 58–64°N) is presented on the basis of the strongest earthquakes felt during the period 1831–1889 and three complete catalog parts, covering the period 1890–1987.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Natural hazards 8 (1993), S. 201-215 
    ISSN: 1573-0840
    Keywords: Earthquake hazard ; response spectrum ; site response ; stochastic model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract A stochastic model, nonlinear site response computations, and Monte Carlo statistics are incorporated into a process which is used to synthesize the uniform-hazard site specific response spectrum. This procedure, termed the SvE procedure, uses the Monte Carlo process for simulating the seismicity in the seismic areas neighboring the investigated site and to quantify the source parameters of the earthquakes in the simulated catalogues. Stochastic simulations are then applied to each of the listed earthquakes to generate the synthetic S-wave ground accelerations. For sites which are composed of thick layers of soil, each of the synthesized accelerograms is corrected for the nonlinear response of the site. The synthetic free surface S-wave accelerations are used to compute the response spectra for a given damping. Simple statistical analysis of the obtained spectral amplitudes is applied to determine the response spectrum where each of its determined spectral amplitudes has the same prescribed probability of being exceeded. The SvE procedure is demonstrated by determining the uniform-hazard response spectrum of an arbitrarily chosen site in Israel to which hypothetical, yet realistic, soil properties have been assigned.
    Type of Medium: Electronic Resource
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  • 5
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    In:  Earthquake Information Bull., Luxembourg, EGS-Gauthier-Villars, vol. 12, no. 1, pp. 26-35, pp. 2214
    Publication Date: 1980
    Keywords: Seismicity ; Tectonics ; Earthquake hazard ; global ; Middle ; East
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  • 6
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    In:  Geol. Soc. Am. Bull., Tokyo, Am. Geophys. Union, vol. 95, no. 5946, pp. 686-700, pp. 8043
    Publication Date: 1984
    Keywords: Fault zone ; Geol. aspects ; Earthquake hazard
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  • 7
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    In:  Bulletin of the Seismological Society of America, Luxembourg, EGS-Gauthier-Villars, vol. 89, no. 2, pp. 456-467, pp. 1310
    Publication Date: 1999
    Keywords: Nuclear explosion ; Earthquake hazard ; Seismology ; BSSA
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  • 8
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    In:  Bull. Seism. Soc. Am., Luxembourg, EGS-Gauthier-Villars, vol. 90, no. 6, pp. 1498-1506, pp. L23608
    Publication Date: 2000
    Keywords: Fracture ; Fault zone ; Statistical investigations ; Earthquake hazard ; BSSA
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  • 9
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    In:  J. Geodynamics, Luxembourg, EGS-Gauthier-Villars, vol. 29, no. 3-5, pp. 151-185, pp. L23303
    Publication Date: 2000
    Keywords: Earthquake hazard ; Fault zone ; China ; Seismicity
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  • 10
    Publication Date: 2005
    Description: Earthquake scarps associated with recent historical events have been found on the floor of the Sea of Marmara, along the North Anatolian Fault (NAF). The MAuto-Regressive Moving Average-processRASCARPS cruise using an unmanned submersible (ROV) provides direct observations to study the fine-scale morphology and geology of those scarps, their distribution, and geometry. The observations are consistent with the diversity of fault mechanisms and the fault segmentation within the north Marmara extensional step-over, between the strike-slip Ganos and Izmit faults. Smaller strike-slip segments and pull-apart basins alternate within the main step-over, commonly combining strike-slip and extension. Rapid sedimentation rates of 1-3 mm/yr appear to compete with normal faulting components of up to 6 mm/yr at the pull-apart margins. In spite of the fast sedimentation rates the submarine scarps are preserved and accumulate relief. Sets of youthful earthquake scarps extend offshore from the Ganos and Izmit faults on land into the Sea of Marmara. Our observations suggest that they correspond to the submarine ruptures of the 1999 Izmit (Mw 7.4) and the 1912 Ganos (Ms 7.4) earthquakes. While the 1999 rupture ends at the immediate eastern entrance of the extensional Cinarcik Basin, the 1912 rupture appears to have crossed the Ganos restraining bend into the Sea of Marmara floor for 60 km with a right-lateral slip of 5 m, ending in the Central Basin step-over. From the Gulf of Saros to Marmara the total 1912 rupture length is probably about 140 km, not 50 km as previously thought. The direct observations of submarine scarps in Marmara are critical to defining barriers that have arrested past earthquakes as well as defining a possible segmentation of the contemporary state of loading. Incorporating the submarine scarp evidence modifies substantially our understanding of the current state of loading along the NAF next to Istanbul. Coulomb stress modeling shows a zone of maximum loading with at least 4-5 m of slip deficit encompassing the strike-slip segment 70 km long between the Cinarcik and Central Basins. That segment alone would be capable of generating a large-magnitude earthquake (Mw 7.2). Other segments in Marmara appear less loaded. FROTH
    Keywords: Earthquake hazard ; Turkey ; Fault zone ; NAF ; G3 ; G-cubed ; AGU ; Ucarkus ; Lepinay ; Cagatay ; Cakir ; Structural geology ; 7230 ; Seismology: ; Seismicity ; and ; tectonics ; Oezalaybey ; Ozalaybey ; Lefevre ; 7223 ; Earthquake ; interaction, ; forecasting, ; and ; prediction ; morphology ; submersible ; 8110 ; Tectonophysics: ; Continental ; tectonics: ; general ; 1766 ; 1894 ; 1912 ; 1999 ; Earthquake
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