4 record(s) found with the tag "sonar survey" (multi-year projects are grouped):
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Ice Thickness Topography Study - Beaufort Sea
Principal Investigator: Melling, Humfrey
Licenced Year(s): 1996 1995 1994 1993 1992 1991 1990
Summary: The base for operations is the PCSP Base at Tuktoyaktuk. The ice measurements are made by untended instruments operating beneath the sea throughout the year. The instruments to be retrieved in March 1996 were positioned in April 1995. They will be recovered through the ice using aircraft-based logistics. The survey of water properties will be conducted at about 15 selected sites in the offshore...


Determination of the Spatial and Temporal Structure of the Compression of Wave Speed and Attenuation in Sea Ice
Principal Investigator: Rajan, S.D.
Licenced Year(s): 1992 1990
Summary: This study will assist in understanding the changes that take place in the structure of sea ice during different seasons. These data will help in determining the strength characteristics of sea ice....


Licence #5017
Principal Investigator: Sauriol, Yvan
Licenced Year(s): 1985
Summary: To conduct Phase II of Through-the-Ice-Sounding Study. Measurements will be made on rifle shots aimed vertically at the ice from a platform and firing shots at the ice from a helicopter to develop a non-contact through-the-ice sounding method....


Licence #4005
Principal Investigator: de Heering, Philippe
Licenced Year(s): 1984
Summary: To carry out phase I of a bathymetric survey system. A tower will be built on the ice and a rifle (460 cal Weaterby) mounted on it. The rifle will be discharged into the ice and measurements made to determine the amount of sound transmitted to the water, the level of bottom echo detected in air etc....


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