Skip to Main Content
Book Chapter

Gravity Data Reduction and Interpretation Using a Digital Computer, a Case History

By
David B. Morris
David B. Morris
Search for other works by this author on:
Robert A. Sultzbach
Robert A. Sultzbach
Search for other works by this author on:
Published:
January 01, 1967

Abstract

A large-scale gravity survey program produces a continuing flow of data which must be computed, interpretedstored for future reference. Computer methods developed to facilitate the processing of these data are discussed.

A gravity data-reduction program performs processing and computation of gravimeter and elevation field notes. The computation of instrument drift, scale correction factor, observed gravity, theoretical gravity, station elevationBouguer gravity at several densities is accomplished by the program. BL station observed gravity values required for the computations are maintained on a magnetic disk file which is automatically updated with the newly computed stations. The results are printed in a standard format and preserved for future reference in a punched-card history file.

A specialized gravity profile interpretation program computes the depth to bedrock for two dimensional alluvial valleys from the Bouguer gravity profile. The alluvial cross section is approximated by a series of vertical rectangular strips. Depth to bedrock is computed by an iterative procedure. As an optional feature, the regional correction is automatically determined as a function of the Bouguer profile by the iterative procedure. The interpreted section is plotted along with the Bouguer gravity profile with an on-line plotter.

The computer methods are competitive costwise with manual methodsthey provide the additional advantages of speed, accuracyversatility.

The first steps toward automated processing of gravity data at Kennecott were taken in conjunction with regional gravity work. In 1958 a gravity data history file was established on punched cards. Each gravity station

You do not currently have access to this article.

Figures & Tables

Contents

Mining Geophysics Volume II, Theory

Don A. Hansen
Don A. Hansen
Search for other works by this author on:
Walter E. Heinrichs, Jr.
Walter E. Heinrichs, Jr.
Search for other works by this author on:
Ralph C. Holmer
Ralph C. Holmer
Search for other works by this author on:
Robert E. MacDougall
Robert E. MacDougall
Search for other works by this author on:
George R. Rogers
George R. Rogers
Search for other works by this author on:
John S. Sumner
John S. Sumner
Search for other works by this author on:
Stanley H. Ward
Stanley H. Ward
Search for other works by this author on:
Society of Exploration Geophysicists
ISBN electronic:
9781560802716
Publication date:
January 01, 1967

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal