Geological interpretation of Halifax Harbour, Nova Scotia, Canada / G.B.J. Fader, R.O. Miller, and B.J. Todd.: M183-2/8957E-PDF

"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.

Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.920340&sl=0

• MARC XML format
• MARC HTML format

Request alternate formats