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  • 1
    Call number: SR 90.0008(77-32)
    In: Paper
    Type of Medium: Series available for loan
    Pages: 14 S. + 5 pl.
    ISBN: 0660015307
    Series Statement: Paper / Geological Survey of Canada 77-32
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Series available for loan
    Series available for loan
    Ottawa : Geological Survey of Canada
    Associated volumes
    Call number: SR 90.0008(80-15)
    In: Paper
    Type of Medium: Series available for loan
    Pages: 102 S.
    ISBN: 0660109301
    Series Statement: Paper / Geological Survey of Canada 80-15
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Publication Date: 2013-08-31
    Description: This paper reports preliminary results of airborne imaging radar studies of the Sudbury structure carried out in preparation for a CCRS European Remote Sensing Satellite (ERS-1) investigation. The data used were synthetic aperture radar (SAR) C-band (5.66 cm) images acquired from about 6 km altitude in 1987. They cover the Sudbury area in both wide and narrow swath modes, with east-west flight paths and north-south illumination directions. Narrow swath resolution is 6 m in range and azimuth; wide swath resolution is 20 m in range and 10 m in azimuth. The STAR imagery has proven highly effective for field use, providing excellent rendition of topography and topographically expressed structure. Reasons for this include the illumination geometry, notably the look azimuth normal to the long axis of the Sudbury structure and Penokean fold axes, the good spatial resolution, and the short wavelength. Forested areas in the Sudbury area tend to be uniformly rough at C-band wavelength, with backscatter dominated by local incidence angle (i.e., topography). Field work using the SAR imagery has to date been concentrated in the North Range and Superior Province as far north as the Benny greenstone belt. This area was chosen for initial investigation of the original size and shape of the Sudbury structure because the effects of the Penokean Orogeny were minimal there. Field work using SAR indicates that there has been little postimpact deformation of the North Range or adjacent Superior Province rock. There appears to be no evidence for an outer ring concentric with the North Range as indicated by early Landsat imagery. The apparent ring shown by Landsat is visible on the SAR imagery as the intersection of two regional fracture patterns not related to the Sudbury structure. There is no outer ring visible southwest of the structure. This can reasonably be explained by Penokean deformation, but there is no outer ring to the northeast cutting the relatively undeformed Huronian sediments of the Cobalt Embayment.
    Keywords: GEOPHYSICS
    Type: Lunar and Planetary Inst., International Conference on Large Meteorite Impacts and Planetary Evolution; p 49
    Format: application/pdf
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  • 4
    Publication Date: 2011-08-19
    Description: The structural investigation of the Canadian Shield by orbital radar and LANDSAT, is outlined. The area includes parts of the central metasedimentary belt and the Ontario gneiss belt, and major structures as well-expressed topographically. The primary objective is to apply SIR-B data to the mapping of this key part of the Grenville orogen, specifically ductile fold structures and associated features, and igneous, metamorphic, and sedimentary rock (including glacial and recent sediments). Secondary objectives are to support the Canadian RADARSAT project by evaluating the baseline parameters of a Canadian imaging radar satellite planned for late in the decade. The baseline parameters include optimum incidence and azimuth angles. The experiment is to develop techniques for the use of multiple data sets.
    Keywords: COMMUNICATIONS AND RADAR
    Type: JPL The SIR-B Sci. Invest. Plan; 4 p
    Format: text
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  • 5
    Publication Date: 2011-08-19
    Description: Canadian Shield were studied by orbital radar. The primary objective of the study is scientific: to investigate and clarify the tectonic relationships of the Churchill, Superior, and Grenville Provinces, concentrating on their geologic boundaries, the Nelson and Grenvill Fronts. Theories about its origin range from in-situ regional metamorphism to tectonic sutures resulting from terrain accretion. The SIR-B investigation clarifies this problem. Secondary objectives are technique development, and include: (1) evaluation of the use of orbital radar in high altitude Precambrian terrains; (2) evaluation of look-azimuth biasing in radar and LANDSAT imagery; and (3) investigation of the synergistic use of radar, LANDSAT, and geophysical data in Precambrian studies.
    Keywords: GEOPHYSICS
    Type: JPL The SIR-B Sci. Invest. Plan; 4 p
    Format: text
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  • 6
    Publication Date: 2019-06-28
    Description: This paper presents preliminary results from the integration of geophysical and geological data sets using Bayesian statistical analysis with the purpose of mapping the Churchill-Superior Boundary zone. In the Wabowden area the contribution of each rock type to the aeromagnetic anomaly is judged by convolving the aeromagnetic anomaly value with the average magnetic susceptibility. The 'a posteriori' probabilities of significant patterns in the new data are then computed. The highest 'a posteriori' probability occurs along a narrow corridor whose trend coincides remarkably with the location of the Churchill-Superior Boundary Zone. In the Wekusko Lake area, C-SAR and TM data were integrated using an image analysis system. Here the emphasis is on mapping of geological structures.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Format: text
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  • 7
    Publication Date: 2019-08-27
    Description: An update of current and future systems for spectral scanning of geological features in the thermal-IR, and active microwave bands is presented. The design characteristics of four individual systems are described, including the NASA Thermal Infrared Multispectral Scanner (TIMS); the Shuttle Imaging Radars A and B (SIRA-A and SIRA-B); and the Canadian RADARSAT satellite for geological mapping and ice monitoring. The applications of spectral data from the Side Looking Airborne Radar (SLAR), the GEMS 100 mapping system, and the Landsat RBV instrument to the mapping of large geological structures are also described.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Type: Frontiers for geological remote sensing from space; Geosat Workshop; Jun 12, 1983 - Jun 17, 1983; Flagstaff, AZ
    Format: text
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