Almost two years ago the Electronic Seismologist (ES) hosted a column by Havskov and Ottemöller (SRL 70:5) on the SeisAn earthquake analysis system. Since then the ES has received a number of e-mails asking questions about this package and how to get it. A common question is, “What about acquiring the seismic data in the first place?” There are many different seismic data-acquisition packages available, and the SeisAn system is well adapted to use data from some of them. However, some questions received indicated dissatisfaction with what the questioner knew or could easily find out about, while other questioners...

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