Bed conduction impact on fiber optic distributed temperature sensing water temperature measurements
Error in distributed temperature sensing (DTS) water temperature measurements may be introduced by contact of the fiber optic cable sensor with bed materials (e.g., seafloor, lakebed, streambed). Heat conduction from the bed materials can affect cable temperature and the resulting DTS measurements....
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Copernicus Publications
2015-02-01
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Series: | Geoscientific Instrumentation, Methods and Data Systems |
Online Access: | http://www.geosci-instrum-method-data-syst.net/4/19/2015/gi-4-19-2015.pdf |
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doaj-83e81e16a62441adbc04a72a2408c7042020-11-25T01:05:24ZengCopernicus PublicationsGeoscientific Instrumentation, Methods and Data Systems2193-08562193-08642015-02-0141192210.5194/gi-4-19-2015Bed conduction impact on fiber optic distributed temperature sensing water temperature measurementsT. O'Donnell Meininger0J. S. Selker1Oregon State University, Department of Biological and Ecological Engineering, Corvallis, Oregon, USAOregon State University, Department of Biological and Ecological Engineering, Corvallis, Oregon, USAError in distributed temperature sensing (DTS) water temperature measurements may be introduced by contact of the fiber optic cable sensor with bed materials (e.g., seafloor, lakebed, streambed). Heat conduction from the bed materials can affect cable temperature and the resulting DTS measurements. In the Middle Fork John Day River, apparent water temperature measurements were influenced by cable sensor contact with aquatic vegetation and fine sediment bed materials. Affected cable segments measured a diurnal temperature range reduced by 10% and lagged by 20–40 min relative to that of ambient stream temperature. The diurnal temperature range deeper within the vegetation–sediment bed material was reduced 70% and lagged 240 min relative to ambient stream temperature. These site-specific results illustrate the potential magnitude of bed-conduction impacts with buried DTS measurements. Researchers who deploy DTS for water temperature monitoring should understand the importance of the environment into which the cable is placed on the range and phase of temperature measurements.http://www.geosci-instrum-method-data-syst.net/4/19/2015/gi-4-19-2015.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
T. O'Donnell Meininger J. S. Selker |
spellingShingle |
T. O'Donnell Meininger J. S. Selker Bed conduction impact on fiber optic distributed temperature sensing water temperature measurements Geoscientific Instrumentation, Methods and Data Systems |
author_facet |
T. O'Donnell Meininger J. S. Selker |
author_sort |
T. O'Donnell Meininger |
title |
Bed conduction impact on fiber optic distributed temperature sensing water temperature measurements |
title_short |
Bed conduction impact on fiber optic distributed temperature sensing water temperature measurements |
title_full |
Bed conduction impact on fiber optic distributed temperature sensing water temperature measurements |
title_fullStr |
Bed conduction impact on fiber optic distributed temperature sensing water temperature measurements |
title_full_unstemmed |
Bed conduction impact on fiber optic distributed temperature sensing water temperature measurements |
title_sort |
bed conduction impact on fiber optic distributed temperature sensing water temperature measurements |
publisher |
Copernicus Publications |
series |
Geoscientific Instrumentation, Methods and Data Systems |
issn |
2193-0856 2193-0864 |
publishDate |
2015-02-01 |
description |
Error in distributed temperature sensing (DTS) water temperature measurements
may be introduced by contact of the fiber optic cable sensor with bed
materials (e.g., seafloor, lakebed, streambed). Heat conduction from the bed
materials can affect cable temperature and the resulting DTS measurements.
In the Middle Fork John Day River, apparent water temperature measurements
were influenced by cable sensor contact with aquatic vegetation and fine
sediment bed materials. Affected cable segments measured a diurnal
temperature range reduced by 10% and lagged by 20–40 min relative to
that of ambient stream temperature. The diurnal temperature range deeper
within the vegetation–sediment bed material was reduced 70% and lagged
240 min relative to ambient stream temperature. These site-specific
results illustrate the potential magnitude of bed-conduction impacts with
buried DTS measurements. Researchers who deploy DTS for water temperature
monitoring should understand the importance of the environment into which
the cable is placed on the range and phase of temperature measurements. |
url |
http://www.geosci-instrum-method-data-syst.net/4/19/2015/gi-4-19-2015.pdf |
work_keys_str_mv |
AT todonnellmeininger bedconductionimpactonfiberopticdistributedtemperaturesensingwatertemperaturemeasurements AT jsselker bedconductionimpactonfiberopticdistributedtemperaturesensingwatertemperaturemeasurements |
_version_ |
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