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Lunar Seismic Event Catalog on Microfiche


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1969-11-20 to 1975-07-08


This data set consists of a catalog identifying all seismic events observed on the long-period components of the lunar seismic network. It is microfiche of a printout from tape-generated IBM cards supplied by the experimenter. Events are presented in chronological order with the following parameters listed -- year, day of year, event start and stop times (UT), maximum signal amplitudes, playout, quality, and type class. Amplitudes were picked from the compressed scale playouts. Motion amplitudes, expressed in millimeters, were picked from records plotted on a scale of 400 digital units per inch. A '1' in the playout column implies that an expanded scale playout is available for that event. A quality factor is assigned whenever the record for an event is other than normal. Priority is given to the smallest appropriate number -- (1) no data at the time the event occurred, (2) clock-rate error, (3) noisy record, and (4) record masked by another event. The event type is an interpretation of the possible origin of the event where (A) is a classified moonquake, (M) is a suspected moonquake, (C) is a suspected meteoroid impact, (Z) is mostly short period, (X) is an unusual event, (L) is a LM impact, and (S) is a Saturn IV-B impact. The event class gives the classification number for type A events. All events in the same class have matching waveforms.

Alternate Names

  • Seismic Event Catalog


  • Planetary Science: Geology and Geophysics


  • 69-099C-03H

Additional Information



Questions and comments about this data collection can be directed to: Dr. David R. Williams



NameRoleOriginal AffiliationE-mail
Mr. Robert W. VostreysData ProviderNASA Goddard Space Flight Center
Mr. Robert W. VostreysGeneral ContactNASA Goddard Space Flight Center
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