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  • 1
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    In:  J. Geophys. Res., Warszawa, EGS, vol. 76, no. 1, pp. 1113-1138, pp. B05S16, (ISSN: 1340-4202)
    Publication Date: 1971
    Keywords: Geothermics ; Plate tectonics ; Subduction zone ; Seismicity ; JGR ; Toksoez ; Toksoz
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  • 2
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    In:  Geophysics, Warszawa, EGS, vol. 41, no. 1, pp. 621-645, pp. B05S16, (ISSN: 1340-4202)
    Publication Date: 1976
    Keywords: Seismics (controlled source seismology) ; Velocity ; Physical properties of rocks ; Fluids ; Toksoez ; Toksoz
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  • 3
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    In:  Tectonophys., Warszawa, EGS, vol. 50, no. 1, pp. 177-196, pp. B05S16, (ISSN: 1340-4202)
    Publication Date: 1978
    Keywords: ConvolutionE ; Plate tectonics ; Tectonics ; Toksoez ; Toksoz
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  • 4
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    In:  Geophysics, Warszawa, EGS, vol. 44, no. 1, pp. 681-690, pp. B05S16, (ISSN: 1340-4202)
    Publication Date: 1979
    Keywords: Attenuation ; Fluids ; Quality factor ; Seismics (controlled source seismology) ; Laboratory measurements ; Toksoez ; Toksoz
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  • 5
    Publication Date: 1980-05-09
    Description: Average crustal models for the northeastern United States are computed on the basis of the travel times of P and S waves from regional earthquakes. The Precambrian Grenville Province in New York State has a relatively homogeneous crust. The Paleozoic New England Appalachians have a well-defined, two-layer crust that is slightly thicker and shows a high-velocity lower layer relative to the Grenville. A time-term analysis based on P(n) data (waves refracted from the Moho) shows that a relatively thick or low-velocity crust parallels northeast-trending geologic structures in central New England. The observed differences between the two orogenic belts may reflect contrasts in their tectonic evolution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Taylor, S R -- Toksoz, M N -- Chaplin, M P -- New York, N.Y. -- Science. 1980 May 9;208(4444):595-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17732845" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2000-09-01
    Description: We use Global Positioning System (GPS) observations and elastic half-space models to estimate the distribution of coseismic and postseismic slip along the Izmit earthquake rupture. Our results indicate that large coseismic slip (reaching 5.7 meters) is confined to the upper 10 kilometers of the crust, correlates with structurally distinct fault segments, and is relatively low near the hypocenter. Continued surface deformation during the first 75 days after the earthquake indicates an aseismic fault slip of as much as 0.43 meters on and below the coseismic rupture. These observations are consistent with a transition from unstable (episodic large earthquakes) to stable (fault creep) sliding at the base of the seismogenic zone.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reilinger -- Ergintav -- Burgmann -- McClusky -- Lenk -- Barka -- Gurkan -- Hearn -- Feigl -- Cakmak -- Aktug -- Ozener -- Toksoz -- New York, N.Y. -- Science. 2000 Sep 1;289(5484):1519-1524.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, E34, 42 Carleton Street, Cambridge, MA 02142, USA. TUBITAK, Marmara Research Center, Earth Science Research Institute, Gebze 41470, Turkey. Department of Earth and Planetary Science, 301 McCone Hall, University of California, Berkeley, Berkeley, CA 94720, USA. General Command of Mapping, Cebece, Ankara, Turkey. Istanbul Technical University, Eurasia Earth Science Institute, Ayazaga, Istanbul, Turkey. Kandilli Observatory, Bogazici University, Istanbul, Turkey. Department of Terrestrial and Planetary Dynamics (UMR 5562) Centre National de Recherche Scientifique, 14 ave. E. Belin 31400 Toulouse, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10968782" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 41 (1993), S. 0 
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: Reiter, E.C., Toksoz, M.N. and Purdy, G.M. 1992. A semblance-guided median filter. Geophysical Prospecting41, 15–41.A slowness selective median filter based on information from a local set of traces is described and implemented. The filter is constructed in two steps, the first being an estimation of a preferred slowness and the second, the selection of a median or trimmed mean value to replace the original data point. A symmetric window of traces defining the filter aperture is selected about each trace to be filtered and the filter applied repeatedly to each time point. The preferred slowness is determined by scanning a range of linear moveouts within the user-specified slowness passband. Semblance is computed for each trial slowness and the preferred slowness selected from the peak semblance value. Data points collected along this preferred slowness are then sorted from lowest to highest and in the case of a pure median filter, the middle point(s) selected to replace the original data point. The output of the filter is therefore quite insensitive to large amplitude noise bursts, retaining the well-known beneficial properties of a traditional 1D median filter. Energy which is either incoherent over the filter aperture or lies outside the slowness passband, may be additionally suppressed by weighting the filter output by the measured peak semblance.This approach may be used as a velocity filter to estimate coherent signal within a specified slowness passband and reject coherent energy outside this range. For applications of this type, other velocity estimators may be used in place of our semblance measure to provide improved velocity estimation and better filter performance. The filter aperture may also be extended to provide increased velocity estimation, but will result in additional lateral smearing of signal. We show that, in addition to a velocity filter, our approach may be used to improve signal-to-noise ratios in noisy data. The median filter tends to suppress the amplitude of random background noise and semblance weighting may be used to reduce the amplitude of background noise further while enhancing coherent signal.We apply our method to vertical seismic profile data to separate upgoing and downgoing wavefields, and also to large-offset ocean bottom hydrophone data to enhance weak refracted and post-critically reflected energy.
    Type of Medium: Electronic Resource
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  • 8
    Publication Date: 2013-08-31
    Description: The assessment of earthquake hazards and mineral and oil potential of a given region requires a detailed knowledge of geological structure, including the configuration of faults. Delineation of faults is traditionally based on three types of data: (1) seismicity data, which shows the location and magnitude of earthquake activity; (2) field mapping, which in remote areas is typically incomplete and of insufficient accuracy; and (3) remote sensing, including LANDSAT images and high altitude photography. Recently, high resolution radar images of tectonically active regions have been obtained by SEASAT and Shuttle Imaging Radar (SIR-A and SIR-B) systems. These radar images are sensitive to terrain slope variations and emphasize the topographic signatures of fault zones. Techniques were developed for using the radar data in conjunction with the traditional types of data to delineate major faults in well-known test sites, and to extend interpretation techniques to remote areas.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: JPL The Second Spaceborne Imaging Radar Symposium; p 17-24
    Format: application/pdf
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  • 9
    Publication Date: 2013-08-31
    Description: Studies of the structure of the continental collision zones using seismic and body waves, theoretical modelling of the thermal regime of the convergence processes, and studies of earthquake mechanisms and deformation aspects of the model are covered.
    Keywords: GEOPHYSICS
    Type: SASR-1-3 , NASA-CR-170019 , NAS 1.26:170019
    Format: application/pdf
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  • 10
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Lunar seismic data from three Apollo seismometers are interpreted to determine the structure of the Moon's interior to a depth of about 100 km. The travel times and amplitudes ofP arrivals from Saturn IV B and LM impacts are interpreted in terms of a compressional velocity profile. The most outstanding feature of the model is that, in the Fra Mauro region of Oceanus Procellarum, the Moon has a 65 km thick layered crust. Other features of the model are: (i) rapid increase of velocity near the surface due to pressure effects on dry rocks, (ii) a discontinuity at a depth of about 25 km, (iii) near constant velocity (6.8 km/s) between 25 and 65 km deep, (iv) a major discontinuity at 65 km marking the base of the lunar crust, and (v) very high velocity (about 9 km/s) in the lunar mantle below the crust. Velocities in the upper layer of the crust match those of lunar basalts while those in the lower layer fall in the range of terrestrial gabbroic and anorthositic rocks.
    Type of Medium: Electronic Resource
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