NDLI: Subsurface measurement needs for ecological, hydrological and agricultural applications

Content Provider	IEEE Xplore Digital Library
Author	Jones, S.B. Shenai, K.
Copyright Year	2007
Description	Author affiliation: Utah State Univ., Logan (Jones, S.B.)
Abstract	Biological activities occurring in the subsurface largely depend on the relative abundances of water and oxygen that are required for respiration. Accurate measurements of soil water content and flux in addition to concentrations of $CO_{2}$ and $O_{2}$ have been the target of research to improve agriculture and environmental management. The majority of sensors used for subsurface science are based on electrical, electromagnetic or optical measurement principles. Novel developments in subsurface water-related measurement approaches include on-the-go time domain reflectometry (TDR) probes and heat-pulse-based water flux probes. Measurement approaches for gas concentration and flux have relied on new developments using thin films and optical techniques, while gas flux measurements utilize surface chamber measurements and subsurface concentration gradient approaches.
Starting Page	754
Ending Page	757
File Size	625185
Page Count	4
File Format	PDF
ISBN	9781424411757
ISSN	15483746
DOI	10.1109/MWSCAS.2007.4488688
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-05
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hydrologic measurements Hydrology Electromagnetic measurements Soil measurements Optical sensors Optical films Biomedical optical imaging Probes Water heating Agriculture
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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