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020 |a9780660477503
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn-ns
0861 |aM183-2/8957E-PDF
1001 |aFader, Gordon B., |eauthor.
24510|aGeological interpretation of Halifax Harbour, Nova Scotia, Canada / |cG.B.J. Fader, R.O. Miller, and B.J. Todd.
264 1|a[Ottawa] : |bGeological Survey of Canada = Commission géologique du Canada, |c2023.
264 4|c©2023
300 |a1 online resource (1 poster) : |bcolour maps.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aOpen file = |aDossier public, |x2816-7155 ; |v8957
504 |aIncludes bibliographical references.
520 |a"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.
650 0|aGeology|zNova Scotia|zHalifax Harbour.
650 0|aMultibeam mapping|zNova Scotia|zHalifax Harbour.
650 6|aGéologie|zNouvelle-Écosse|zHalifax, Havre de.
650 6|aBathymétrie par secteurs|zNouvelle-Écosse|zHalifax, Havre de.
7102 |aGeological Survey of Canada, |eissuing body.
830#0|aOpen file (Geological Survey of Canada)|v8957.|w(CaOODSP)9.506878
85640|qPDF|s51.82 MB|uhttps://publications.gc.ca/collections/collection_2023/rncan-nrcan/m183-2/M183-2-8957-eng.pdf
8564 |qHTML|sN/A|uhttps://doi.org/10.4095/331504