Seismic Energy Generation and Partitioning into Various Regional Phases From Different Seismic Sources in the Middle East Region
Abstract
An event database was created to study empirical features of seismic energy generation from explosions, and how this energy is partitioned between P and S waves. The explosions selected present a broad variety of design features and geological settings. A number of experimental single-fired explosions were conducted and numerous observations were acquired from the near-source zone to near-regional distances by stations in Israel and Jordan. From regional observations of the Sayarim charge-weight series, significant seismic strength was achieved in spite of a dry alluvium media, commonly considered as low-coupling material, and shallow burial depth. Existing software was modified and new programs were developed. As a case study analysis the computer procedures were applied to the Sayarim shots. Results show dependencies of S/P maximum amplitude and energy ratios on distance and yield. Source scaling estimations show similar yield scaling parameters (0.87-0.93) for different phases, in close agreement with the constants for explosions in Nevada and Wyoming. Application of the spectral ratio technique to data collected for some explosions provided estimates of the corner frequency-charge relation and the equivalent yield of a partially detonated explosion. The analysis will be continued for other events from the dataset selected and new planned experimental shots to validate the results obtained.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 13, 2005
- Accession Number
- ADA440508
Entities
People
- Vladimir Pinsky
- Yefim Gitterman