Ferris Wheel Series Air Vent/Flat Top Events
Abstract
Air Vent and Flat Top were HE experiments studying ground shock and cratering. There were 33 shots varying in size from 64 pounds to 20 tons, all spheres and all but one in the playa of NTS Area 5. The 20-ton shots comprised one at 17-foot depth (Air Vent 1) and two half-buried in playa (Flat Tops II and III), and one half-buried in limestone (Flat Top I). Air blast measurements were made on the three Flat Top shots. Results are much as predicted preshot. Ground motion measurements were made on the Flat Top shots and on Air Vent I. Associated calculations were made postshot; their results are in general agreement with the data but do not go out to distances where most of the data were taken. Air-blast-induced ground motions on Flat Tops II and III in playa were superseismic through the whole range of measurement. Acceleration and vertical component of velocity were dominated by air-blast-induced shock, displacements and horizontal components of velocity by direct ground shock. Flat Top I in limestone was sub-seismic through most of the range of measurement. Gages at similar positions had similar wave forms, but the time scale of records in limestone was much faster than of records in playa. Horizontal velocities were larger in limestone than in playa; vertical velocities higher in playa than in limestone.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 27, 1968
- Accession Number
- ADA284930
Entities
People
- M. L. Merritt