Mathematics – Logic
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29n..49m&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 14, pp. 49-1, CiteID 1704, DOI 10.1029/2002GL014923
Mathematics
Logic
11
Oceanography: Biological And Chemical: Nutrients And Nutrient Cycling, Oceanography: Biological And Chemical: Biogeochemical Cycles (1615), Hydrology: Groundwater Transport, Oceanography: Biological And Chemical: Radioactivity And Radioisotopes, Geochemistry: Marine Geochemistry (4835, 4850)
Scientific paper
We report the discovery of a semi-confined, high permeability zone (HPZ) 2 meters below the sea bed where exchanges between coastal aquifers and the ocean occur. A temperature probe placed in the HPZ recorded a 1°C semidiurnal cycle. The cycle was in phase with the tide, indicating tidal pumping was driving water exchange through the HPZ. We use these temperature variations to quantify water exchange between the HPZ and the ocean. Water in the HPZ is enriched in nutrients and radium; both total dissolved nitrogen and phosphorus correlate strongly with dissolved 226Ra. We use these correlations and previously quantified subterranean fluxes of 226Ra to demonstrate that this system may be a significant source of nutrients to the coastal ocean.
Joye Samantha
Krest James
Lee Rosalynn
Moore Willard S.
Roggenstein Edward
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