From 1 - 4 / 4
  • Categories  

    The IR Transducer is installed at the 400 level of the CCGS Amundsen icebreaker on the port side of the ship. The data recording is done on a separate storage module and then transferred to the backup drive. It can record the data at a user-specified time interval. The data file is an ASCII DAT file which can be processed either by the given software or in any graph plotting program. The sensor recorded continuously, 24 hours per day.

  • Categories  

    The surface temperature of the target within the passive microwave (PMW) systems field of view were collected on a high temporal resolution. An infrared transducer was positioned on the port side of the CCGS Amundsen, at a height of approximately 7 meters. Data collection occurred every 15 seconds. The instrument collected data throughout the entirety of the Amundsen Cruise at a fixed angle. Brightness temperature data of target is in degrees Celsius.

  • Categories  

    Improved surface and bedrock DEMs have been produced for the Belcher Glacier using data from different sources, including in situ measurements, airborne soundings, and satellite images. Surface elevation is based on 2007 (late summer) SPOT5 HRS images. Bed elevation values are derived from surface-based ground penetrating radar soundings conducted during the 2007 and 2008 summer field seasons. Airborne radar surveys in 2000 and 2005 by the Scott Polar Research Institute and the Center for Remote Sensing of Ice Sheets, respectively, provide ice thickness data. By subtracting ice thickness from surface elevation using the surface DEM, bedrock elevation values are derived. Additional bedrock elevation data for the seafloor in front of the terminus of Belcher Glacier were obtained from a bathymetric survey in 2006 by workers from Memorial University of Newfoundland and the University of New Brunswick working off the CCGS Amundsen. A 40-m grid is used as a map base. Bed elevation values were found for each point on the grid by applying a kernel that weighted values of surrounding points by distance. After finding a suitable semivariogram model, statistical interpolation (kriging) was performed to fill in the rest of the grid points to produce the bedrock DEM. As a check, a 1999 Landsat panchromatic image was used to force bedrock elevation to equal surface elevation within the boundaries of rock outcrops and thus ensure that ice thickness is zero throughout.

  • Categories  

    The webcam was installed on the navigation deck of CCGS Amundsen on the port side (see http://www.amundsen.ulaval.ca/index.php?url=11511&sub=1). Its field of view nearly match with that of microwave radiometer. Thus, both of the instruments look at the same area on the ground. The webcam is set to acquire JPEG images every 5 seconds or it can be set according to the requirement by the user. A sodium lamp has be lighted on the port side to get the pictures during the night time.