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Tom Alena Seth Bonnett Cindy Brisson Dave Cox Ken Huff Nate Poore Kathy Rossman Jerry Roth Valerie L. Thomas
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SNOWPIT #1 at CASCADE LAKE
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February 18, 2002 - 10:00 AM
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| GPS MEASUREMENT |
Lat. - 44°14'09"N |
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Long. - 73°51'48" W |
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Elevation - 639m |
| WEATHER CONDITIONS |
Sky - Clear |
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Wind - West@10-20mph (est.) |
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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. |
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DATA: DENSITY-TEMPERATURE PROFILE
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| 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 |
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Snowpit Statigraphy
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| 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 |
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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.
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