Tom Alena Seth Bonnett Cindy Brisson Dave Cox Ken Huff Nate Poore Kathy Rossman Jerry Roth Valerie L. Thomas
SNOWPIT #1 at CASCADE LAKE
February 18, 2002 - 10:00 AM
GPS MEASUREMENT Lat. - 44°14'09"N
Long. - 73°51'48" W
Elevation - 639m
WEATHER CONDITIONS Sky - Clear
Wind - West@10-20mph (est.)
Temp. - -7.25°C
LAKE CONDITIONS 52cm of ice, combo of lake ice and snow ice, covered with 9.5cm fresh snow
SNOWPIT METADATA Snowpit was dug in drifted snow at the south edge of the lake. Slush was noted near the base of the pit at lake's edge. Total depth 126cm.
DATA: DENSITY-TEMPERATURE PROFILE
Depth (cm) Tube (#) Weight Empty (g) Weight w/snow (g) Snow Mass (g) Snow Density (g/cm3) Thermometer (#) Non - Corrected Temp (°C) Corrected Temp (°C)
9.5 1 295 462 167 0.334 1a -2.5 -2.5
27.5 2 296 452 156 0.312 2a -2.8 -2.8
37.5 3 294 440 146 0.292 3a -3.0 -3.0
50.0 4 296 443 147 0.294 4a -2.1 -2.1
62.1 5 294 444 150 0.300 5a -3.1 -3.1
77.0 6 300 460 160 0.320 6a -4.5 -2.5
90.0 7 292 Miss n/a n/a 7a -4.8 -2.8
104.0 8 292 414 122 0.244 9a -6.5 -5.5
115.0 10 292 386 94 0.188 5d -7.8 -7.9
Snowpit Statigraphy
Depth (cm) Size (mm) Shape-Grain Shape-Crystal
119 missed very soft-fine stellar
115 2-3 crystals missed
110 1-2 fine rounded, clusters
85 1 coarse rounded pebbles
65 .5 coarse and icy attached balls
55 .4 fine grain attached balls
35 .5 coarse and soft rounded string of beads
20 .5 fine grain rounded string of beads
10 .1 missed missed
Snowpit #1 Conclusions:
Temperature profile of the pit indicated varying temperatures through different layers. Generally, the snow was coldest at the top layer and warmest near the bottom, but several variations occurred from layer to layer. A similar trend was noted for the density. Lowest density was noted at the top and highest density occurred at the bottom. Near the middle an area of higher density snow was recorded that may be due to specific weather events at that time.
SNOWPIT ONE / SNOWPIT TWO