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In 1959 Talwani and others published an algorithm to compute the gravitational field of an arbitrarily shaped two-dimensional body (finite cross section and infinite horizontal extent). A Fortran program GRAV2D presented in this report follows the line-integral method developed by Talwani and his coauthors. Input may consist of one or more bodies; output may be computed at any elevation and distance. Two test cases demonstrate the reliability of the program.

Rudman, A. J., and Blakely, R. F., 1983, Computer calculation of two-dimensional gravity fields: Indiana Geological Survey Occasional Paper 40, 22 p., 3 figs., 4 app.

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Keywords: program, geophysics, gravity

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