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Seismic Event Log as Card Images


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

Time span: 1972-04-21 to 1975-12-31


This data set consists of a catalog listing all seismic events observed on the long period components of the lunar seismic network. It is tape generated from IBM cards supplied by the experimenter. Events are presented in chronological order with the following parameters listed -- year, day of the year, event start and stop times (ut), maximum signal amplitudes, playout, quality, and type class. A stop time of 'qqqq' implies that the event overlaps the next event. The amplitudes given are for the vertical axis. Amplitudes were picked from the compressed scale playouts (data set 72-031C-01D). Amplitudes are in millimeters picked on records plotted as a scale of 400 digital units per in. A '1' in the playout column implies that an expanded scale playout (data set 72-031C-01C) 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, (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) unusual event, (L) is an LM impact, (S) is an SIVB impact. The event class gives the classification number for type A events. All events in the same class have matching waveforms. The data are written in BCD on an IBM 7094 computer.

Alternate Names

  • Event Log as Card Images


  • Planetary Science: Geology and Geophysics


  • 72-031C-01G

Additional Information



Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Dr. Gary V. LathamGeneral ContactUniversity of Texas, Galveston
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