00000nam 2200000zi 4500 9.920340 CaOODSP 20251031142448 m o d f cr mn||||||||| 230221t20232023oncb ob f000 0 eng d 9780660477503 CaOODSP eng rda CaOODSP n-cn-ns M183-2/8957E-PDF Fader, Gordon B., author. Geological interpretation of Halifax Harbour, Nova Scotia, Canada / G.B.J. Fader, R.O. Miller, and B.J. Todd. [Ottawa] : Geological Survey of Canada = Commission géologique du Canada, 2023. ©2023 1 online resource (1 poster) : colour maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Open file = Dossier public, 2816-7155 ; 8957 Includes bibliographical references. "An important part of seabed mapping is understanding the shape of the seabed and the depth of water. Hydrographic charts are produced for this purpose by the Canadian Hydrographic Service. During the final survey stages of Halifax Harbour a new technology called multibeam sonar bathymetry became available for high resolution mapping. This system uses transducers (sound sources) mounted on a ship that produce many independent sound beams and can map a large swath of the seabed at one time covering 100% of the bottom. The images that are produced are computer shaded to look as if the water is drained and you are flying over the area. They are the underwater equivalent of aerial photographs of the adjacent land. Because the information is collected digitally, many different kinds of maps can be produced to show subtle aspects of sediment deposition, erosion, and seabed features. The information can also be displayed using various colour schemes to represent seabed shape and computer generated fly-throughs can be produced. The multibeam sonar bathymetric images nicely complement other geological data sets"--Introduction. Geology Nova Scotia Halifax Harbour. Multibeam mapping Nova Scotia Halifax Harbour. Géologie Nouvelle-Écosse Halifax, Havre de. Bathymétrie par secteurs Nouvelle-Écosse Halifax, Havre de. Geological Survey of Canada, issuing body. Open file (Geological Survey of Canada) 8957. (CaOODSP)9.506878 PDF 51.82 MB https://publications.gc.ca/collections/collection_2023/rncan-nrcan/m183-2/M183-2-8957-eng.pdf HTML N/A https://doi.org/10.4095/331504