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Alsep data processing: How we processed Apollo Lunar Seismic DataThe 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.
Document ID
19790014814
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Latham, G. V. (Texas Univ. Galveston, TX, United States)
Nakamura, Y. (Texas Univ. Galveston, TX, United States)
Dorman, H. J. (Texas Univ. Galveston, TX, United States)
Date Acquired
September 3, 2013
Publication Date
March 1, 1979
Subject Category
Lunar And Planetary Exploration
Report/Patent Number
NASA-CR-160141
Accession Number
79N22985
Funding Number(s)
CONTRACT_GRANT: NAS9-14810
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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