Creepmeter FOR2 is installed across the localized part of the Cerro Fortuna Fault, where small cracks cut the surface of a gully incised in the fault scarp. Compared to the small normal offset, strike slip displacement seems to dominate in the geological record. Incised gullies are incised deeply into the alluvial fan surfaces indicating a long period of slow or no relative vertical displacement across the fault zone. Nevertheless fresh open cracks indicate recent reactivation, probably in strike slip mode. The fault plane strikes 189° and dips 76° E.


Location-22.865617° S/ -70.177333° W
Elevation1089 m
Installation Date2009/04/08
Length4 m
Depth80 cm
Sampling Rate60 sec, 30 sec since June 2010

2009/11/18 logger uninstalled

2009/11/22 logger reinstallation, weather station and GPS, antenna installation for time synchronization

2010/06/10 logger power supply connected to battery, 1 V reference signal, adjustment internal clock, increased sampling rate to 30 sec

2010/10/31 setup online connection

2011/04/02 logger firmware update, differential voltage measurement, installation of temperature reference sensor (Pt100), installation box temperature sensor, LVDT power supply connected directly to battery

2011/11/08 logger firmware update

Additional InstrumentsWeather station (humidity, air pressure, air temperature)