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| Titel |
Assessment of a vertical high-resolution distributed-temperature-sensing system in a shallow thermohaline environment |
| VerfasserIn |
F. Suárez, J. E. Aravena, M. B. Hausner, A. E. Childress, S. W. Tyler |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 15, no. 3 ; Nr. 15, no. 3 (2011-03-30), S.1081-1093 |
| Datensatznummer |
250012702
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| Publikation (Nr.) |
 copernicus.org/hess-15-1081-2011.pdf |
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| Zusammenfassung |
| In shallow thermohaline-driven lakes it is important to measure
temperature on fine spatial and temporal scales to detect
stratification or different hydrodynamic regimes. Raman spectra
distributed temperature sensing (DTS) is an approach available to
provide high spatial and temporal temperature resolution. A vertical
high-resolution DTS system was constructed to overcome the problems of
typical methods used in the past, i.e., without disturbing the water
column, and with resistance to corrosive environments. This paper
describes a method to quantitatively assess accuracy, precision and
other limitations of DTS systems to fully utilize the capacity of this
technology, with a focus on vertical high-resolution to measure temperatures
in shallow thermohaline environments. It also presents a new method to
manually calibrate temperatures along the optical fiber achieving significant
improved resolution. The vertical high-resolution DTS system is used to monitor
the thermal behavior of a salt-gradient solar pond, which is an engineered
shallow thermohaline system that allows collection and storage of solar energy
for a long period of time. The vertical high-resolution DTS system monitors the
temperature profile each 1.1 cm vertically and in time
averages as small as 10 s. Temperature resolution as low as 0.035 °C is
obtained when the data are collected at 5-min intervals. |
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