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Two former faces of the moon Two former faces of the moon

Systematic geologic mapping of the lunar near side has resulted in the assignment of relative ages to most visible features. As a derivative of this work, geologic and artistic interpretations have been combined to produce reconstructions of the Moon's appearance at two significant points in its history. The reconstructions, although generalized, show the Moon (1) as it probably appeared...
Authors
D.E. Wilhelms, D.E. Davis

Satellite relay telemetry of seismic data in earthquake prediction and control Satellite relay telemetry of seismic data in earthquake prediction and control

The Satellite Telemetry Earthquake Monitoring Program was started in FY 1968 to evaluate the applicability of satellite relay telemetry in the collection of seismic data from a large number of dense seismograph clusters laid out along the major fault systems of western North America. Prototype clusters utilizing phone-line telemetry were then being installed by the National Center for...
Authors
Wayne H. Jackson, Jerry P. Eaton
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