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Meteoroid Impact Expanded Scale Playouts (Digitized)


Availability: Data Identified but not Received

Time span: 1971-04-13 to 1975-05-04


This collection consists of digitized microfilm frames containing expanded time scale playouts of selected meteoroid impacts. The playouts are expanded so that 1 minute of data is displayed in 10 centimeters. These data are not processed, e.g., no filtering, smoothing, signal averaging, etc. The annotation format consists of: year in which the playouts begin; SKIP X MAG (C) where SKIP = the corresponding seismic event tape number, MAG = a multiplicative factor which adjusts the signal amplitude of an event for plotting, and C = the long-period (LP) component where X is LPX, Y is LPY, and Z is LPZ; the day of the year on which the playouts begin; and the hour, minute, and second (universal time, UT) at which the playout begins. Time ticks are placed at 1-minute intervals. The time marks are not corrected for possible clock errors.

For this digitization effort the NSSDCA scanned the source microfilm collections PSPG-00165, PSPG-00201, PSPG-00425, and PSPG-00664 (all are on the same, single reel) at a resolution of 400 dots per inch and output each frame on the film as one TIFF file. The NSSDCA also combined the TIFF images into a multipage PDF file to facilitate browsing. Both formats are included in this collection.



NameRoleOriginal AffiliationE-mail
Dr. Frederick K. DuennebierData ProviderUniversity of
Dr. Frederick K. DuennebierGeneral ContactUniversity of
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