The National Geodetic Survey absolute gravity program
Abstract
The National Geodetic Survey absolute gravity program will utilize the high precision afforded by the JILAG-4 instrument to support geodetic and geophysical research, which involves studies of vertical motions, identification and modeling of other temporal variations, and establishment of reference values. The scientific rationale of these objectives is given, the procedures used to collect gravity and environmental data in the field are defined, and the steps necessary to correct and remove unwanted environmental effects are stated. In addition, site selection criteria, methods of concomitant environmental data collection and relative gravity observations, and schedule and logistics are discussed.
- Publication:
-
Unknown
- Pub Date:
- March 1989
- Bibcode:
- 1989ngs..rept.....P
- Keywords:
-
- Geodesy;
- Geodetic Surveys;
- Geophysics;
- Gravimetry;
- Site Selection;
- Calibrating;
- Earth Crust;
- Earth Movements;
- Environment Effects;
- Logistics;
- Temporal Distribution;
- Geophysics