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Pacific Coastal & Marine Science Center

Submarine Ground-water Discharge

Submarine Ground-water Discharge Diagram
 

An Autonomous, Electromagnetic Seepage Meter to Study Coastal Groundwater/Surface-water Exchange

USGS Open File Report 2004-1369

"An autonomous, electromagnetic seepage meter to study coastal groundwater/surface-water exchange" is a four-page full-color pamphlet detailing the use of a "state-of-the-art electromagnetic flow meter that enables rapid, autonomous, bi-directional measurements of fluid exchange rates across the sediment/water interface."

See the whole publication online, or download a printable copy (1 MB PDF) from: sofia.usgs.gov/publications/ofr/2004-1369/.

Clip of the first page of the open file report.

Five-day time series graph

Five-day time series of (A) bottom water 222Rn activities (dpm/L), (B) bidirectional electromagnetic (EM) seepage meter results (cm/d); the zero discharge line is shown for reference, and (C) bottom water conductivities (mS/cm) collected from the top of a EM seepage meter dome. The reference line in (C) denotes the mean conductivity (40.7 mS/cm) of the bottom waters.

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Science questions to: Peter Swarzenski
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Page Last Modified: 27 June 2012 (lzt)