Pueblo Viejo-Quixal Seismograph Network, Preliminary Report #2, submitted to Ing. Edgar Celada, INDE, Guatemala City, Guatemala. 10 November 1979
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Report No. 2 is prepared to cover the data period from March 17 through July 10, 1979. During this period, the memory-trigger-system is installed and the timing resolution of seismic data is remarkably improved. Purpose and design criteria of the Pueblo Viejo-Quixal 1 seismograph network and the description of the instrument are included in this report. Preliminary analysis of epicenter distribution started to illustrate some of the possible linearment along the active faults. The limited data permits us only a tentative conclusion, which might be subject to change as the data accumulates, but some of the features important to the Pueblo Viejo-Quixal Hydroelectric project are: 1) A moderate activity along the Chixoy-Polochic fault system is revealed. 2) A possible north-south trending activity across the dam site and along the Rio Chixoy to the north is suggested.