20 new sites of the Oaxaca-Guerrero GPS network were occupied in March-April 2001, each site for 3 days.
The records from continuous GPS stations in Pinotepa Nacional (PINO), Oaxaca (OAXA), and Huatulco (HUAT)
will be used as the reference for a differencial data processing. 13 sites in the central part of the Oaxaca have
been occupied in July 2000 for 4-24 hours. These data will provide some preliminary estimates of the crustal
deformation along the coast of Oaxaca.

Photo of the Oaxaca GPS team, 2001.