Meausrements of large fault displacements on the Hayward fault

Starting in summer of 2014, the USGS, in cooperation with University of Colorado, installed additional sensors at the 5 creepmeters on the Hayward Fault. Now at each creepmeter site, there exists 3 sensors each having different sensitivity and ranges. Small displacements are measured using linear voltage displacement transducers (LVDT) which can resolve 0.01 mm displacements but are limited to 50 mm total displacement. The other two sensors use Hall effect rotary transducers either having a 360 or 3600 degree range. Their resolution are nominally 0.025 mm or 0.40 mm, but they have a total range of better than 1.5 meters. Consequently, data from these devices are better suited for measuring the displacements from the large earthquakes the rupture the Hayward fault.