A distributed-temperature-sensing-based soil temperature profiler

Abstract ∼ 30  cm), soil temperature measurements with DTS have generally been restricted to (horizontal) spatially distributed measurements. This paper presents a device which allows high-resolution measurements of (vertical) soil temperature profiles by making use of a 3D-printed screw-like structure. A 50 cm tall probe is created from segments manufactured with fused-filament 3D printing and has a helical groove to guide and protect a fiber-optic (FO) cable. This configuration increases the effective DTS measurement resolution and will inhibit preferential flow along the probe. The probe was tested in the field, where the results were in agreement with the reference sensors. The high vertical resolution of the DTS-measured soil temperature allowed determination of the thermal diffusivity of the soil at a resolution of 2.5 cm, many times better than what is feasible using discrete probes. A future improvement in the design could be the use of integrated reference temperature probes, which would remove the need for DTS calibration baths. This could, in turn, support making the probes “plug and play” into the shelf instruments without the need to splice cables or experience in DTS setup design. The design can also support the integration of an electrical conductor into the probe and allow heat tracer experiments to derive both the heat capacity and the thermal conductivity over depth at high resolution.

Objekt anzeigen

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: A distributed-temperature-sensing-based soil temperature profiler ; volume:13 ; number:1 ; year:2024 ; pages:85-95 ; extent:11 ; Geoscientific instrumentation, methods and data systems ; 13, Heft 1 (2024), 85-95 (gesamt 11)

Beteiligte, Orts- und Zeitangaben

• Urheber: Schilperoort, Bart ; Jiménez Rodríguez, César ; van de Wiel, Bas ; Coenders-Gerrits, Miriam

Weitere Informationen

• DOI: 10.5194/gi-13-85-2024
• URN: urn:nbn:de:101:1-2405020430455.595186697441
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.