A Review of Available Free-Field Seismic Data from Underground Nuclear Explosions in Alluvium, Tuff, Dolomite, Sandstone-Shale and Interbedded Lava Flows
SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CA
Pagination or Media Count:
The primary objective of this effort has been to reformat the published free-field ground motion data into a homogeneous form which will serve as a useful reference for researchers who are attempting to define theoretical seismic source functions for contained explosions in these media. The report describes the available free-field data for 13 events Fisher, Hognose, Haymaker, Merlin, Hupmobile and Packard events in alluvium Rainier, Mud Pack and Discus Thrower events in tuff the Handcar event in dolomite the Gasbuggy event in sandstone-shale and the Milrow and Cannikin events in interbedded lava flows. Relevant geologic data is presented for each event to illustrate the environment of the ground motion measurements. The data presented include 53 RDPs 14 for sources in alluvium, 24 for tuff, 11 for dolomite and 4 for sandstone-shale. Some of these dervied RDPs appear to be affected by secondary arrivals from media boundaries or have been developed from measurements within the strongly inelastic region and therefore may not accurately represent the radiated seismic field. Free-field data from Handcar, Discus Thrower and Merlin are analyzed in greater detail in an effort to discern additional information about the seismic source characteristics of these events.