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Determination of frozen ground probabilities from climatic and hydrologic data Item Info

The prediction of frozen ground occurrences can help the local planner regulate development in areas which are subject to floods. Discriminant analysis was used in the Missouri Flat Creek case in order to study past frozen or unfrozen ground runoff events using eight meteorological factors. These eight factors are number of freezing days in a sequence, freeze index (sum of degree-days below 32�F), precipitation two days before the start of the freeze period, precipitation during the freeze period, precipitation four days after the freeze period, the depth of snowfall during the freeze period, the depth of snow on the ground before and total stream flow 4 days after. After a series of analyses, the eight meteorological factors used were determined to be sufficient to classify the runoff events into frozen or unfrozen ground events. The freeze index was found to be the single most important factor for estimating the frozen or unfrozen ground condition in the Missouri Flat Creek Basin. Ten of 89 unknown samples are probably frozen ground and the rest of them probably belong to the unfrozen ground class.

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Title:
Determination of frozen ground probabilities from climatic and hydrologic data
Authors:
Yen, En Sheng
Date Created (ISO Standard):
1975-07
Description:
The prediction of frozen ground occurrences can help the local planner regulate development in areas which are subject to floods. Discriminant analysis was used in the Missouri Flat Creek case in order to study past frozen or unfrozen ground runoff events using eight meteorological factors. These eight factors are number of freezing days in a sequence, freeze index (sum of degree-days below 32�F), precipitation two days before the start of the freeze period, precipitation during the freeze period, precipitation four days after the freeze period, the depth of snowfall during the freeze period, the depth of snow on the ground before and total stream flow 4 days after. After a series of analyses, the eight meteorological factors used were determined to be sufficient to classify the runoff events into frozen or unfrozen ground events. The freeze index was found to be the single most important factor for estimating the frozen or unfrozen ground condition in the Missouri Flat Creek Basin. Ten of 89 unknown samples are probably frozen ground and the rest of them probably belong to the unfrozen ground class.
Subjects:
frozen ground meteorological data collection
Location:
Missouri Flat Creek
Latitude:
46.77
Longitude:
-117.12
Collection:
IWRRI
IWRRI number:
197524
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
Publisher:
University of Idaho
Contributing Institution:
University of Idaho
Type:
Text
Format:
application/pdf
Cataloger:
wbv
Date Digitized:
2012

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Source
Preferred Citation:
"Determination of frozen ground probabilities from climatic and hydrologic data", Idaho Waters Digital Library, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iwdl/items/iwdl-yen_1975.html
Rights
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
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