Underground Estuary
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Underground Estuary
Underground Estuary makes visible tidal fluctuations in sub-surface groundwater levels. Sitting over a 25' well, water in the column moves up and down in synchrony with the groundwater. A mechanical float in the water column drives a drum-type chart recorder plotting a month's worth of groundwater fluctuation.
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Undergroun d Estuary
(2009)
Exploratorium/National Park Service, Lower Ft. Mason, San Francisco, CA.
8" x 72", Steel, water filled acrylic cylinder, chart recorder, 25' well
Underground Estuary makes visible tidal fluctuations in sub-surface groundwater levels. Sitting over a 25' well, water in the column moves up and down in synchrony with the groundwater. A mechanical float in the water column drives a drum-type chart recorder plotting a month's worth of groundwater fluctuation.