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Lake Ice Block Samples from Cascade Lake
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| Air Temperature (digital #3) |
-8.1°C (original reading was -7.8°C)
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ICE BLOCK #1
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| Location |
Latitude - 44°14'8"N
Longitude - 73°51'47"W
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| Observations |
Snow cover = 7.2cm Ice block could not be extracted intact. Layer of snow ice on top |
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ICE BLOCK #2
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| Location |
Latitude - 44°14'11"N
Longitude - 73°51'47"W
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| Observations |
Continued difficulty in ice block extraction |
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ICE BLOCK #3
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| Location |
Latitude - 44°14'9"N
Longitude - 73°51'50"W
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| Observations |
Ice block retrieval was more successful with one corner fully intact. |
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Conclusions from Lake Ice:
From observing the core sample and ice blocks from Cascade Lake, our group noticed that there were two layers of ice from each sample. The top layer of the ice was composed of small crystals; it appeared very coarse and opaque. The bottom layer appeared to be very solid and of uniform consistency. It also transmitted light very easily. We determined that the top layer of the ice was snow ice. Snow ice is formed by water mixing with snow and refreezing. This could occur by snow followed by rain, or water from some other source. The bottom layer of the ice was lake ice, which is formed by the freezing of water contained in the lake.
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