Special Data Collection System (SDCS). Tuamotu Archipelago Region, 19 March 1977
TELEDYNE GEOTECH ALEXANDRIA VA ALEXANDRIA LABS
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This event report contains seismic data from the Special Data Collection System SDCS, and other sources for the above event. Published epicenter information from seismic observations is presented. All SDCS stations were operational during this time period. HN-ME data were retrieved from analog back-up system due to bad memory unit in the digital system. Long-period at all SDCS stations was negative. Short-period horizontals were rotated.