DEVELOPMENT OF GRAVITY BOUGUER ANOMALIES OF STATE OF OHIO AND THE ISOSTATIC ANOMALIES IN NORTH ATLANTIC IN FOURIER SERIES

• Main Author: KIVIOJA,LASSI
• Other Authors: AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS
• Format: Text
• Language: English
• Published: 1962
• Subjects: *FOURIER ANALYSIS; *GEODESICS; *GRAVITY; *SERIES(MATHEMATICS); North Atlantic
• Online Access: http://www.dtic.mil/docs/citations/AD0282546; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0282546

Gravity anomalies were developed in Fourier series in two test areas: 2 x 3 deg area in the State of Ohio, and 10 x 35 deg area in the Atlantic. Based on these developments, mean gravity anomalies were estimated for 10 x 10 min and 1 x 1 deg squares. For comparison, also another method was used in which the original values were plotted on a transparent sheet placed over a topographic or bathymetric map, isoanomaly contour lines were drawn based only on the original anomaly values and the topography, and the mean gravity anomalies were estimated for the same squares as in the Fourier series method. The result is that this second manual method has smaller standard errors than the Fourier series method, and that this kind of extrapolation even between two anomaly profiles should not be extended farther than about 4 degrees from a profile. (Author)