ALSEP data processing: How we processed Apollo Lunar Seismic Data

Details ALSEP data processing: How we processed Apollo Lunar Seismic Data ALSEP data processing: How we processed Apollo Lunar Seismic Data

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979stin...7922985l&link_type=abstract

Final Technical Report Texas Univ., Galveston. Marine Science Inst.

Computer Science

Apollo Lunar Surface Experiments Package, Data Processing, Lunar Seismographs, Digital Data, Pdp 15 Computer, Plotting, Signal Processing

Scientific paper

The Apollo lunar seismic station network gathered data continuously at a rate of 3 x 10 to the 8th power bits per day for nearly eight years until the termination in September, 1977. The data were processed and analyzed using a PDP-15 minicomputer. On the average, 1500 long-period seismic events were detected yearly. Automatic event detection and identification schemes proved unsuccessful because of occasional high noise levels and, above all, the risk of overlooking unusual natural events. The processing procedures finally settled on consist of first plotting all the data on a compressed time scale, visually picking events from the plots, transferring event data to separate sets of tapes and performing detailed analyses using the latter. Many problems remain especially for automatically processing extraterrestrial seismic signals.

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