Premium
Position of the saline water interface beneath oceanic islands
Author(s) -
Fetter C. W.
Publication year - 1972
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr008i005p01307
Subject(s) - aquifer , groundwater , geology , position (finance) , saline water , saline , conductivity , soil science , hydrology (agriculture) , mechanics , geotechnical engineering , oceanography , salinity , chemistry , physics , finance , endocrinology , economics , medicine
If saline and fresh groundwater are assumed to be immiscible, the three‐dimensional position of the saline water interface beneath an oceanic island may be described by one partial differential equation. The Dupuit assumption is used so that the governing flow equation is two‐dimensional. Analytical solutions are presented for islands with certain simple geometric boundaries. Multilayered aquifers may be treated by assuming an average conductivity for all aquifer layers. The model may be solved for islands of any shape by using a numerical solution. The model has been used successfully to generate the known position of the saline water interface beneath the South Fork of Long Island, New York, and could be used in water resource studies to determine the position of the saline water interface if it were unknown.