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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />13 <br /> <br />crew to and from a sampling site. This was done for two <br />reasons, the first being that it was essential to keep pay- <br />loads to a minimum to ensure safe take-off and landing at <br />high elevation sites selected in the target. The second <br />reason being that' it was necessary to transport the pro- <br />filers back to the staging area rapidly so that melting of <br />the snow samples could be avoided. <br /> <br />I <br />I <br />I <br />I <br /> <br />Upon arrival at a sampling site (e.g., Figures 4, 5, 6, <br />7), the profiler was pushed down into the snowpack at a pre- <br />viously located snowboard or, in the case of the initial <br />sampling, slightly below the January 15th snowpack level. <br />This layer could be identified by its noticeably higher den- <br />sity. Cold, clear weather prior to the start of the experi- <br />mental field season had created this condition. If this <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br /> <br />Figure 4. Kents Lake sampling site (UTB) <br />