Potential of wireless sensor networks for measuring soil water content variability

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Title:Main Title: Potential of wireless sensor networks for measuring soil water content variability
Description:Abstract: Soil water content (SWC) plays a key role in partitioning water and energy fluxes at the land surface and in controlling hydrologic fluxes such as groundwater recharge. Despite the importance of SWC, it is not yet measured in an operational way at larger scales. The aim of this study was to investigate the potential of wireless sensor network technology for the nearreal- time monitoring of SWC at the field and headwater catchment scales using the recently developed wireless sensor network SoilNet. The forest catchment Wüstebach (~27 ha) was instrumented with 150 end devices and 600 EC-5 SWC sensors from the ECH2O series by Decagon Devices. In the period between August and November 2009, more than six million SWC measurements were obtained. The observed spatial variability corresponded well with results from previous studies. The very low scattering in the plots of mean SWC against SWC variance indicates that the sensor network data provide a more accurate estimate of SWC variance than discontinuous data from measurement campaigns, due, e.g., to fixed sampling locations and permanently installed sensors. The spatial variability in SWC at the 50-cm depth was significantly lower than at 5 cm, indicating that the longer travel time to this depth reduced the spatial variability of SWC. Topographic features showed the strongest correlation with SWC during dry periods, indicating that the control of topography on the SWC pattern depended on the soil water status. Interpolation results indicated that the high sampling density allowed capture of the key patterns of SWC variation.
Identifier:10.2136/vzj2009.0173 (DOI)
Responsible Party
Creators:Heye Bogena (Author), Michael Herbst (Author), Johan A. Huisman (Author), Ulrike Rosenbaum (Author), Ansgar Weuthen (Author), Harry Vereecken (Author)
Publisher:Soil Science Society of America
Publication Year:2013
Topic
TR32 Topic:Soil
Related Subproject:B1
Subjects:Keywords: Soil Water Content, Wireless Sensor, Hydrology
File Details
Filename:2010_Bogena_VZJ.pdf
Data Type:Text - Article
Size:12 Pages
File Size:2.3 MB
Date:Available: 30.09.2009
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
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Download Permission:Only Project Members
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:[TR32DB] Data policy agreement
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Specific Information - Publication
Publication Status:Published
Review Status:Peer reviewed
Publication Type:Article
Article Type:Journal
Source:Vadose Zone Journal
Source Website:www.soils.org
Issue:4
Volume:9
Number of Pages:12 (1 - 12)
Metadata Details
Metadata Creator:Heye Bogena
Metadata Created:02.12.2013
Metadata Last Updated:02.12.2013
Subproject:B1
Funding Phase:1
Metadata Language:English
Metadata Version:V50
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