A crustal deformation observatory near the San Andreas Fault in central California (PB3)

This final technical report discusses several objectives and accomplishments of the first years effort of a project titled A Crustal Deformation Observatory Near the San Andreas Fault in Central California. This period saw the conclusion of the Hollister MWDM effort that has produced nearly continuous, high precision, line length measurements for the last 5 years. The establishment of an observatory similar to that used during the Hollister MWDM effort is underway near San Juan Bautista and both high precision vertical and horizontal measurements will commence in the near future. An interim measurement program was begun near Palmdale in Southern California during October 1980 and is continuing at the present time. Extensive electronic modification to the MWDM instrument has also been successfully completed during this reporting period. Each of these efforts will be discussed in more detail in the following sections of this report.