XTA1
Taylor Ranch

Site has seasonal affects...influence by winter rainfall...beware!!

Sept 28 2004 Parkfield EQ caused wire to extend beyond micrometer
range; loosen wire at anchor and allowed 49 mm of wire to slide in order
to 'reset' micometer at 1.7 mm;

Big creep counter and electronics appear to work  TABC

November 2006 swap-out electronics and DCP for a new version; Telemetry 
voltage range now 0-5v; scale factor is now 141.2 counts(mv) per mm 
fault slip (creep).

Nov 28, 2006 -- revised scale factor by 3% after comparing digital data
to aperiodic micrometer measurements. The archival data reflects this change
in scale factor

Times of possible offsets:
N 201401290100 Wire Reset (AS)
N 201505131750 Ditto
N 201608312200 Ditto
S N 201703282230 Ditto  (JL -- using fixit command)
N 201804262000 Wire Reset (TLE)
N 2021j1692000 wire reset (TLE)

For more information, please consult:
Open-File Report 2024-1011, “Summary of Creepmeter Data from 1980 to 2020—Measurements Spanning the Hayward, Calaveras, and San Andreas Faults in Northern and Central California” https://pubs.usgs.gov/publication/ofr20241011

and
Open File Report 89–650, "Catalog of creepmeter measurements in California from 1966 through 1988" https://pubs.usgs.gov/publication/ofr89650

Many people have contributed to this project including:
Roger Bilham
Robert Burford
Sandy Schulz
Andy Snyder
Kate Breckinridge
Todd Erickson
Rich Liechti
Vince Keller
John Langbein

For questions, contact John Langbein (langbein@usgs.gov)