期刊
WATER RESOURCES RESEARCH
卷 50, 期 5, 页码 3706-3713出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2014WR015273
关键词
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资金
- INTERREG IV project CLIMAWAT
- national network of hydrogeological sites H+
- ANR [CRITEX ANR-11-EQPX-0011]
- Natural Environment Research Council (NERC) [NE/J500069/1]
- National Science Foundation
- Division Of Earth Sciences
- Directorate For Geosciences [1128999] Funding Source: National Science Foundation
- Division Of Earth Sciences
- Directorate For Geosciences [1129003] Funding Source: National Science Foundation
- NERC [NE/J500069/1] Funding Source: UKRI
- Natural Environment Research Council [1092440] Funding Source: researchfish
We show how a distributed borehole flowmeter can be created from armored Fiber Optic cables with the Active-Distributed Temperature Sensing (A-DTS) method. The principle is that in a flowing fluid, the difference in temperature between a heated and unheated cable is a function of the fluid velocity. We outline the physical basis of the methodology and report on the deployment of a prototype A-DTS flowmeter in a fractured rock aquifer. With this design, an increase in flow velocity from 0.01 to 0.3 m s(-1) elicited a 2.5 degrees C cooling effect. It is envisaged that with further development this method will have applications where point measurements of borehole vertical flow do not fully capture combined spatiotemporal dynamics.
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