Geometrics, Inc. just released the Stratagem EH-5, their newest magnetotelluric (MT) instrument. The sensitivity of the new Stratagem EH-5 is very high, so data acquired in the AMT dead zone is generally of sufficient quality to eliminate the need for an auxiliary transmitter. This simplifies data collection and eliminates the inconvenience and hassle of setting up extra equipment. This system has many applications and is most used in mineral exploration, research, water investigation, and geotechnical characterization.
Typical data acquisition time per station is 10 to 15 minutes. Depth of imaging depends on the resistivity and the lowest frequency for which there are reliable data, but depths of 500 metres can be expected and up to 1,000 metres on some sites. The unit is simple to set up, boasts a real-time in-field display, and comes with everything you need for your survey.