Assessment of Improved Measurement Technology for Magnetic Resonance Sounding

The technique of Magnetic Resonance Sounding as unique hydrogeophysical prospection method has shown several improvements in data processing, inversion and interpretation during the last years. Along with these improvements, detailed innovations on instrumentation have always been demanded to support the use of this developments. Latest developments in MRS instrumentation now promise to fulfill these demanded hardware developments with a second generation MRS instrumentation. Therefore, a field comparison was carried out comparing this second generation instrumentation (GMR) and the standard MRS device (Numis) at field condition. This field compain includes direct comparison using exactly the same configuration, i.e. loop size and position, while only the device is changed. Different well known and documented test sites (Nauen and Haldensleben) with both different geology and noise properties to test S/N improvements and comparison to further geophysical methods, i.e. DC geoelectrics, GeoRadar and borehole measurements. First results of this field comparison clearly support the demanded hardware developments. The noise cancellation technique has been successfully proved. The multi-channel digital signal detection provides fast and accurate data and opens new field of research.