TECHNICAL PHOTOGRAPHY OF SURFACE MOTION
Abstract
The technical photography of surface motion obtained during the Gnome event, is reported. The project entailed photographic recording of earth motion in and around the Surface Zero area, processing of the resultant film records, production of requested prints, analysis of the photographic records, and submission of the resultant data. The earth motion was recorded photographically from a distance by cameras equipped with longfocal length lenses and close-in by use of special inertia-weight instrumentation. In the long-range photography, the displacement of target arrays anchored in and around Surface Zero was photographed by cameras which were placed far enough distant to have finished recording the maximum earth motion before arrival of the shock wave. With the inertia-weight instrumentation, close-in, shock-mounted cameras recorded the displacement of marked targets in relation to a spring-suspended inertia-weight which remained essentially motionless during the time of interest. All but one of the 15 cameras used to document the earth motion operated well on the Gnome event and good records were obtained.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1962
- Accession Number
- AD0273760
Entities
People
- David Barnes
- J. Heffernan
Organizations
- EG&G