A differential pressure instrument with wireless telemetry for in-situ measurement of fluid flow across sediment-water boundaries
Gardner, Alan T.
Karam, Hanan N.
Mulligan, Ann E.
Harvey, Charles F.
Hammar, Terence R.
Hemond, Harold F.
MetadataShow full item record
An instrument has been built to carry out continuous in-situ measurement of small differences in water pressure, conductivity and temperature, in natural surface water and groundwater systems. A low-cost data telemetry system provides data on shore in real time if desired. The immediate purpose of measurements by this device is to continuously infer fluxes of water across the sediment-water interface in a complex estuarine system; however, direct application to assessment of sediment-water fluxes in rivers, lakes, and other systems is also possible. Key objectives of the design include both low cost, and accuracy of the order of ±0.5 mm H2O in measured head difference between the instrument’s two pressure ports. These objectives have been met, although a revision to the design of one component was found to be necessary. Deployments of up to nine months, and wireless range in excess of 300 m have been demonstrated.
© 2009 The Authors. This article is distributed under the terms of the Creative Commons Attribution (3.0) License. The definitive version was published in Sensors 9 (2009): 404-429, doi:10.3390/s90100404.
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Foote, Kenneth G.; Hastings, Mardi C.; Ketten, Darlene R.; Lin, Ying-Tsong; Reidenberg, Joy S.; Rye, Kent (Acoustical Society of America, 2012-02)Potential physical effects of sonar transmissions on marine mammals were investigated by measuring pressure fields induced in a 119-kg, 211-cm-long, young adult male common dolphin (Delphinus delphis) cadaver. The specimen ...
Fluid-induced breakdown of white mica controls nitrogen transfer during fluid–rock interaction in subduction zones Halama, Ralf; Bebout, Gray; Marschall, Horst R.; John, Timm (2016-09)In order to determine the effects of fluid–rock interaction on nitrogen elemental and isotopic systematics in high-pressure metamorphic rocks, we investigated three different profiles representing three distinct scenarios ...
Qin, Huiling; Huang, Rui Xin; Wang, Weiqiang; Xue, Huijie (John Wiley & Sons, 2016-06-12)Sea Surface Height (SSH) data from the European Centre for Medium-Range Weather Forecasts-Ocean Reanalysis System 4 (ECMWF-ORAS4) are used to determine the pressure difference in connection with variability of the South ...