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  • 1
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    Coseismic and post-seismic slip of the 2009 L'Aquila (central Italy) MW 6.3 earthquake and implications for seismic potential along the Campotosto fault from joint inversion of high-precision levelling, InSAR and GPS data (2014)
    Elsevier Science Limited
    Details
    Publication Date: 2021-06-07
    Description: After the April 6th 2009 MW 6.3 (ML 5.9) L'Aquila earthquake (central Italy), we re-measured more than 100 km of high-precision levelling lines in the epicentral area. The joint inversion of the levelling measurements with InSAR and GPS measurements, allowed us to derive new coseismic and post-seismic slip distributions and to de- scribe, with high resolution details on surface displacements, the activation and the slip distribution of a second- ary fault during the aftershock sequence that struck the Campotosto area (major event MW 5.2). Coseismic slip on the Paganica fault occurred on one main asperity, while the afterslip distribution shows a more complex pattern, occurring on three main patches, including both slips on the shallow portions and on the deeper parts of the rup- ture plane. The comparison between coseismic and post-seismic slip distributions strongly suggests that afterslip was triggered at the edges of the coseismic asperity. The activation of a segment of the Campotosto fault during the aftershock sequence, with a good correlation between the estimated slipping area, moment release and distribution of aftershocks, raises the opportunity to discuss the local seismic hazard following the occurrence of the 2009 L'Aquila mainshock. The Campotosto fault appears capable of generating earthquakes as large as his- torical events in the region (M N 6.5) or as small as the ones associated with the 2009 sequence. In the case that the Campotosto fault is accumulating a significant portion of the current interseismic deformation, the 2009 MW N 5 events will have released only a small amount of the accumulated elastic strain, and then a significant hazard still remains in the area. Continuing geodetic monitoring and a densification of the GPS networks in the region are therefore needed to estimate the tectonic loading across the different recognized active fault systems in this part of the Apennines.
    Description: Published
    Description: 168-185
    Description: 2T. Tettonica attiva
    Description: JCR Journal
    Description: restricted
    Keywords: High-precision leveling; InSAR; GPS; Earthquake source; Normal faulting; Seismic hazard ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations ; 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy ; 04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk ; 04. Solid Earth::04.07. Tectonophysics::04.07.01. Continents
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    The 2009 L’Aquila earthquake (central Italy): A source mechanism and implications for seismic hazard (2010)
    AGU Journal
    Details
    Publication Date: 2017-04-04
    Description: An edited version of this paper was published by AGU. Copyright (2009) American Geophysical Union.
    Description: We use InSAR and body-wave seismology to determine independent source parameters for the 6th April 2009 Mw 6.3 L’Aquila earthquake and confirm that the earthquake ruptured a SW-dipping normal fault with 0.6–0.8 m slip. The causative Paganica fault had been neglected relative to other nearby range-frontal faults, partly because it has a subdued geomorphological expression in comparison with these faults. The L’Aquila earthquake occurred in an area with a marked seismic deficit relative to geodetically determined strain accumulation. We use our source model to calculate stress changes on nearby faults produced by the L’Aquila earthquake and we find that several of these faults have been brought closer to failure.
    Description: Published
    Description: L17312
    Description: 3.2. Tettonica attiva
    Description: JCR Journal
    Description: reserved
    Keywords: L'Aquila earthquake ; InSAR ; 04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 3
    Electronic Resource
    Electronic Resource
    Radiation-induced reverse dark currents in In0.53Ga0.47As photodiodes (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 7244-7249 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The reverse dark current-voltage (dark I-V) curves of InGaAs photodiodes have been measured as a function of temperature following irradiation with 1-MeV electrons. Prior to irradiation, the I-V curves are well described by a diffusion term alone indicating that the junctions are of good quality. Irradiation produces a large increase in the generation current which can be modelled as resulting from a single defect center with an energy Ec−0.29 eV. Such a defect center called E2 has been detected using deep level transient spectroscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354012
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  • 4
    Electronic Resource
    Electronic Resource
    A FRAMEWORK FOR REGIONAL ACCOUNTS: AN AUSTRALIAN PERSPECTIVE (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Review of income and wealth 33 (1987), S. 0 
    Details
    ISSN: 1475-4991
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: The Australian Bureau of Statistics (ABS) has recently published a set of experimental estimates of gross State product at factor cost and its income components for the States of Australia (1): The regular compilation and publication of the estimates is also commencing. In compiling the estimates, certain conceptual issues were confronted. Others were recognized but have not required final resolution as yet because they are beyond the scope of the estimates presently compiled.This paper considers the development of a framework for regional accounts for countries with regional characteristics broadly similar to those of the Australian States by starting with the SNA framework that applies at the national Ievel. The difficulties that arise are highlighted and alternative approaches for dealing with specific issues discussed. These alternative approaches can have a significant impact on measured State relativities and performance over time. In some instances the choice between approaches may be narrowed because of practical considerations in the same way that the SNA is a conceptual framework that nevertheless has to take account of practicalities. The issues largely involve consideration as to whether or not to regard certain activities as extra-territorial in nature. If an extra-territorial concept is not adopted choices must be made on how to allocate data items related to such activities by State.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1475-4991.1987.tb00682.x
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  • 5
    Electronic Resource
    Electronic Resource
    ADVANCE NOTES ON RESEARCH (1961)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 16 (1961), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1961.tb00252.x
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  • 6
    Electronic Resource
    Electronic Resource
    Evaluation of a sward sampling technique for estimating herbage intake by grazing sheep (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 34 (1979), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A sampling procedure for estimating herbage intake by the ‘Difference’ method over short grazing periods using an electrically powered sheep-shearing head to cut long narrow sample strips, was compared with several indirect animal techniques on single-variety grass swards. The method provided intake estimates in good general agreement with those obtained by animal methods but discrepancies arose when used on a semi-prostrate variety due, probably, to incomplete recovery of sampled herbage cut from post-grazing residues.It was concluded that the method might be usefully adopted for the preliminary assessment of the intake characteristics of herbage varieties in routine evaluation programmes, provided that care is taken to ensure the efficient collection of herbage sampled post-grazing and that a reduction in the land requirement can be achieved without undue loss of accuracy or precision. Confirmation of results should be sought using animal methods when possible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1979.tb01445.x
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  • 7
    Electronic Resource
    Electronic Resource
    THE EFFECT OF ‘WINTER BURN’ ON THE CHEMICAL COMPOSITION AND IN VITRO DRY-MATTER DIGESTIBILITY OF EIGHT GRASSES (1964)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 19 (1964), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1964.tb01144.x
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  • 8
    Electronic Resource
    Electronic Resource
    SOME FACTORS CAUSING DIFFERENCES IN DIGESTIBILITY OF GRASSES MEASURED BY AN IN VITRO METHOD (1967)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 22 (1967), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Stage of growth, leafiness and the accumulation of dead material were evaluated as factors causing differences in digestibility between varieties of perennial ryegrass, cocksfoot and timothy. In first growth these factors only partly accounted for the variation in digestibility between species but almost entirely accounted for the variation between varieties within each species. In the regrowths, heading behavior and leafiness were not closely associated with digestibility, which indicated that the variation between grasses following first growth may be a result of inherent differences.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1967.tb00512.x
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  • 9
    Electronic Resource
    Electronic Resource
    Degradation and annealing of electron-irradiated diffused junction InP solar cells (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 78 (1995), S. 7368-7375 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The degradation and annealing properties of 1 MeV electron-irradiated n+p diffused junction InP solar cells are reported in detail. The solar cells were characterized through current–voltage measurements under simulated solar illumination at 1 sun, AM0. The radiation-induced defect spectra were characterized through deep level transient spectroscopy. At fluences up to 1015 cm−2, cell degradation was primarily due to a decrease in the short-circuit current Isc which occurred during the introduction of the hole trap, H4. Most of this degradation could be removed by minority-carrier injection annealing of the H4 defect at temperatures as low as 225 K. At higher irradiation fluences, up to 1016 cm−2, cell degradation was dominated by a decrease in both the open-circuit voltage Voc and the fill factor. This degradation was caused by a large radiation-induced recombination current and by carrier removal which was associated with the introduction of the hole trap H5 and the electron traps EA, EC, and ED. Most of the effects of the recombination current and some of the carrier removal were removed by concurrent injection and thermal annealing between 373 and 400 K where the residual H4 defect concentration and the H5 defect were removed. Essentially full cell recovery was achieved after subsequent annealing between 450 and 500 K where the electron traps also showed a partial annealing stage. Thermal annealing without illumination in the range of 350–500 K showed the same defect annealing stages suggesting that the cell recovery in this temperature range is due solely to thermal annealing. The data are summarized to give a model for the radiation-induced degradation and annealing of these InP solar cells. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.360386
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  • 10
    Electronic Resource
    Electronic Resource
    Time dependence of radiation-induced generation currents in irradiated InGaAs photodiodes (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 1629-1635 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The annealing behavior of the reverse bias current-voltage curves of 1 MeV electron irradiated In0.53Ga0.47As photodiodes has been measured at 300 K. The observed decay is shown to be correlated with the reduction of the E2 peak height with time, as measured by deep level transient spectroscopy. The reverse current is found to decay with a logarithmic time dependence, which can be explained by a model in which the annealing of the E2 defects is controlled by a distribution of thermal energy barriers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354812
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