EPICENTRAL ESTIMATION FOR FIVE LASA EVENTS USING FREQUENCY-WAVENUMBER SPECTRA. LARGE-ARRAY SIGNAL AND NOISE ANALYSIS
Abstract
Five short-period events were processed using a 15-sec gate for the LASA A0, D-ring subarray, a 10-sec gate for the extended E3 subarray, and a 5- sec gate for the F1 subarray. Gate positions were based on time-trace playbacks and were chosen to include the primary P-wave arrivals. For an event recorded on 21 June 1967 from eastern Russia or northeastern China, all f-k give a reasonable accurate location at the 'peak' frequency for this event; however, this is not true for all events. Three types of f-k spectra were calculated at 1.00 Hz. At this frequency none of the f-k spectra peak at the proper k, but conventional and high-resolution spectra, using all the outer ring (D-ring) subarrays as reference, did give some indication of the event.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 16, 1968
- Accession Number
- AD0841672
Entities
People
- Frank H. Binder
- Jerry R. Peebles
Organizations
- Texas Instruments