Oakland Zoo Site map and cross-section Telemetered on line data are available here (user =geo, password=hobo)

The mean creep rate at Oakland Zoo since 1997 has been 3.08 mm/yr. Excluding a 6.5-mm-amplitude creep event in 2004 the mean creep rate here is only 2.39 mm/year. An independent telemetry system provides instant access to recent data . Calibrated and edited data for 1997/2007 are available as a downloadable 3.2Mb file . The data are in two columns delimited by a space. The first column is the time MM/DD/YY HH:MM:SS in GMT and the second is the dextral displacement in mm (only the first two decimal places are meaningful).

Transmission errors and cable short circuits in one of the transducers rendered the data suspect for the period Feb 05 to Mar 05. Careful editing of data in this period reveals a creep rate of 2.6 mm/year before and after a 6.5 mm creep event with a duration of roughly 2 years. The creep event has a possible precedent in Sept 2002 but this event is masked by the seasonal signal which has been significantly reduced in post 2004 data. Each creep event was accompanied by a number of local microearthquakes on the Hayward fault. See details.