AUTOMATED BULLETIN AND SEISMIC DATA RETRIEVAL SYSTEM
TEXAS INSTRUMENTS INC DALLAS
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The Automated Bulletin Program is a system of programs which can be run in sequence on a system oriented computer with a minimum of magnetic tape changes. The system was oriented to obtain a maximum of valid information for research as well as to efficiently provide a seismic bulletin. The concept of operations consists of first picking the arrivals and then checking them against predicted arrivals generated by the computer from USC and GS hypocenter information and travel time curves. Manual bulletins are frequently prepared only after USC and GS information is available to assist in picking arrivals. This latter procedure provides a more complete bulletin, particularly when data analysts are not highly experienced, but introduces a weighting in favor of existing travel time curves. If re-analysis of film strips with aid of PDE data is not performed, scatter in picked arrival times will increase, but should be more closely centered about the actual arrival times. The automated bulletin system will identify phases and collate events analyzed with PDE data more economically than can be done manually, but by operating on raw station data still greater economy can be affected.
- Computer Programming and Software