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A PROGRAM TO CALCULATE AQUIFER TRANSMISSIVITY FROM SPECIFIC‐CAPACITY DATA FOR PROGRAMMABLE CALCULATORS
Author(s) -
Czarnecki John B.,
Craig R. W.
Publication year - 1985
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.1985.tb01515.x
Subject(s) - aquifer , interpolation (computer graphics) , computer program , nonlinear system , computer science , linear interpolation , algorithm , mathematics , polynomial , mathematical analysis , geology , geotechnical engineering , computer vision , image (mathematics) , physics , groundwater , quantum mechanics , operating system
. A program that will calculate aquifer transmissivity from the specific capacity of a well has been developed for handheld programmable calculators. The program extends the approach of Theis and others (1963) beyond the visual graphical interpolation of transmissivity values from type curves and solves directly a nonlinear equation for transmissivity, using a modified Regula Falsi solution algorithm. The program eliminates errors associated with visual interpolation of transmissivities obtained from type curves, especially for values of small transmissivities, and provides a quick and portable method of obtaining transmissivity values onsite.