The application of multiquadric equations and point mass anomaly models to crustal movement studies

the basic National horizontal and vertical networks of geodetic control and provides governmentwide leadership in the improvemment of geodetic surveying methods and instrumentation, coordinates operations to assure network development, and provides specifications and criteria for survey operations by Federal, State, and other agencies. NGS engages in research and development for the improvement of knowledge and its gravity field, and has the responsibility to procure geodetic data these data, and make them generally available to users through a central data of the figure of the Earth from all sources, process base. NOAA Technical Memorandums and some special NOAA publications are sold by the National Technical In­ formation Service (NTIS) in paper copy and microfiche. Orders should be directed to NTIS, 5285 Port Royal Road, Springfield, VA 22161 (telephone: 703-557-4650). NTIS customer charge accounts are invited; some commercial charge accounls are accepted. When ordering, give the NTIS accession number (which begins with PB) shown in parentheses in the following citations. Paper copies of NOAA Technical Reports, which are of general interest to the public, are sold by lhe3238). For prompt service, please furnish the GPO stock number with your order. If a citation does not carry this number, then the publication is not sold by GPO. All NOAA Technical Reports may be purchased from NTIS in hard copy and microform. Prices for the same publication may vary between the two Govern­ ment sales agents. Although both are nonprofit, GPO relies on some Federal support whereas NTIS is self­ sustained. An excellent reference source for Government publications if the National Deposilory Library program, a network of about 1,300 designated libraries. Requests for borrowing Depository Library maLerial may be made through your local library. reprinted annually, 12 pp (PB265442). National specifications and tables show the closures required and tolerances permitted for first-, second-, and third-order geodetic control surveys. Use of climatological and meteorological data in the planning and execution of National Geo­ detic Survey field operations. Availa­ bility, pertinence, uses, and procedures for using climatological and meteorological data are discussed as applicable to NGS field operations. Final report on responses to geodetic data questionnaire. 39 pp (PB25464l). Responses (20%) to a geodetic data questionnaire, mailed to 36,000 land surveyors, are analyzed for projecting fUlure geodetic data needs. 24 pp (PB-258476). An algorithm for improving the profile of a sparse symmetric matrix is introduced and tested against the widely used reverse Cuthill-McKee algorithm. (PB258475). The …