Investigation of thermal regimes of lakes used for water supply and examination of drinking water system in Kotzebue, Alaska
Thesis (M.S.) University of Alaska Fairbanks, 2012 Many villages in Arctic Alaska rely on lakes for water supply, such as the Alaskan City of Kotzebue, and these lakes may be sensitive to climate variability and change, particularly thermal regimes and corresponding effects on water quality. Thus, I...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/8306 2023-05-15T15:00:55+02:00 Investigation of thermal regimes of lakes used for water supply and examination of drinking water system in Kotzebue, Alaska Bendlova, Tereza Arp, Christopher D. Duffy, Lawrence K. Schnabel, William E. Barnes, David L. 2012-08 http://hdl.handle.net/11122/8306 en_US eng http://hdl.handle.net/11122/8306 Department of Civil and Environmental Engineering Fresh water Alaska Kotzebue Drinking water Lakes Thermal properties Water-supply Water quality management Water utilities Thesis ms 2012 ftunivalaska 2023-02-23T21:37:01Z Thesis (M.S.) University of Alaska Fairbanks, 2012 Many villages in Arctic Alaska rely on lakes for water supply, such as the Alaskan City of Kotzebue, and these lakes may be sensitive to climate variability and change, particularly thermal regimes and corresponding effects on water quality. Thus, I initiated a study of water supply lakes in Kotzebue to collect data for developing a model to hindcast summer thermal regimes. Surface (Tws) and bed (Twb) temperature data collected from two water supply lakes and two control lakes from June 22nd-August 28th 2011 showed a similar pattern in relation to air temperature (Ta) and solar radiation with more frequent stratification in the deeper lakes. The average Tws for all lakes during this period was 14.5°C, which was 3.4°C higher than Ta for the same period. I modeled Tws from 1985 to 2010 using Ta, and theoretical clear-sky solar radiation (TCSR) to analyze interannual variability, trends, and provide a baseline dataset. Similar to patterns in Ta for this period, I found no trend in mean Tws for the main lake used for water supply (Devil's Lake), but considerable variation ranging from 12.2°C in 2000 to 19.2°C in 2004. My analysis suggests that 44% of years during this 25 year period maximum daily Tws surpassed 20°C for at least one day. This hindcasted dataset can provide water supply managers in Kotzebue and other Arctic villages with a record of past conditions and a model for how lakes may respond to future climate change and variability that could impact water quality. Thesis Arctic Climate change Alaska University of Alaska: ScholarWorks@UA Arctic Fairbanks |
institution |
Open Polar |
collection |
University of Alaska: ScholarWorks@UA |
op_collection_id |
ftunivalaska |
language |
English |
topic |
Fresh water Alaska Kotzebue Drinking water Lakes Thermal properties Water-supply Water quality management Water utilities |
spellingShingle |
Fresh water Alaska Kotzebue Drinking water Lakes Thermal properties Water-supply Water quality management Water utilities Bendlova, Tereza Investigation of thermal regimes of lakes used for water supply and examination of drinking water system in Kotzebue, Alaska |
topic_facet |
Fresh water Alaska Kotzebue Drinking water Lakes Thermal properties Water-supply Water quality management Water utilities |
description |
Thesis (M.S.) University of Alaska Fairbanks, 2012 Many villages in Arctic Alaska rely on lakes for water supply, such as the Alaskan City of Kotzebue, and these lakes may be sensitive to climate variability and change, particularly thermal regimes and corresponding effects on water quality. Thus, I initiated a study of water supply lakes in Kotzebue to collect data for developing a model to hindcast summer thermal regimes. Surface (Tws) and bed (Twb) temperature data collected from two water supply lakes and two control lakes from June 22nd-August 28th 2011 showed a similar pattern in relation to air temperature (Ta) and solar radiation with more frequent stratification in the deeper lakes. The average Tws for all lakes during this period was 14.5°C, which was 3.4°C higher than Ta for the same period. I modeled Tws from 1985 to 2010 using Ta, and theoretical clear-sky solar radiation (TCSR) to analyze interannual variability, trends, and provide a baseline dataset. Similar to patterns in Ta for this period, I found no trend in mean Tws for the main lake used for water supply (Devil's Lake), but considerable variation ranging from 12.2°C in 2000 to 19.2°C in 2004. My analysis suggests that 44% of years during this 25 year period maximum daily Tws surpassed 20°C for at least one day. This hindcasted dataset can provide water supply managers in Kotzebue and other Arctic villages with a record of past conditions and a model for how lakes may respond to future climate change and variability that could impact water quality. |
author2 |
Arp, Christopher D. Duffy, Lawrence K. Schnabel, William E. Barnes, David L. |
format |
Thesis |
author |
Bendlova, Tereza |
author_facet |
Bendlova, Tereza |
author_sort |
Bendlova, Tereza |
title |
Investigation of thermal regimes of lakes used for water supply and examination of drinking water system in Kotzebue, Alaska |
title_short |
Investigation of thermal regimes of lakes used for water supply and examination of drinking water system in Kotzebue, Alaska |
title_full |
Investigation of thermal regimes of lakes used for water supply and examination of drinking water system in Kotzebue, Alaska |
title_fullStr |
Investigation of thermal regimes of lakes used for water supply and examination of drinking water system in Kotzebue, Alaska |
title_full_unstemmed |
Investigation of thermal regimes of lakes used for water supply and examination of drinking water system in Kotzebue, Alaska |
title_sort |
investigation of thermal regimes of lakes used for water supply and examination of drinking water system in kotzebue, alaska |
publishDate |
2012 |
url |
http://hdl.handle.net/11122/8306 |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Arctic Climate change Alaska |
genre_facet |
Arctic Climate change Alaska |
op_relation |
http://hdl.handle.net/11122/8306 Department of Civil and Environmental Engineering |
_version_ |
1766332963615670272 |