CHO1
The Creepmeter Site CHO1 is equipped with two instruments to monitor assumed strike slip displacement indicated by dextrally offset streams in the long term geological record. The two sensors are both mounted on the same concrete foundation in the hanging wall. The fault strikes 137° and dips 80° towards NE and has an additional normal component of slip. A Guralp broadband seismometer has been installed at the same location in 2010 to investigate the correlation between creepmeter signals and seismometer records. The instrument is equipped with an Inmarsat BGAN satellite connection.
Specifications
| Location | -21.094050°S/ -70.102000°W |
| Elevation | 633 m |
| Installation Date | 2008/12/04 new installation 2010/10/29 |
| Azimuth | Double installation, 60° and 5° |
| Dip | 0° |
| Length | 2 X 6 m, 2 X 7 m since Oct 2010 |
| Depth | 50 – 80 cm |
| Sampling Rate | 60 sec, 30 sec since June 2010 |
| Modifications | 2009/11/27 storage box underground, solar panel frame installed 2009/11/28 logger change and GPS antenna installation for time synchronization 2010/06/11 logger power supply connected to battery, 1 V reference signal adjustment internal clock, increased sampling rate to 30 sec 2010/10/29 reinstallation of instruments, increased length of rods to 7 m, sensor exchange/swap 2011/04/06 logger firmware update, differential voltage measurement, installation of temperature reference sensor (Pt100), installation box temperature sensor, LVDT power supply connected directly to battery, setup online connection 2011/11/17 logger firmware update
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| Additional instruments | Broadband Seismometer CHOM (Guralp CMG-3ESP, sampling frequency 100 Hz, corner frequency 30sec) installed in 2011 |