Markus Eisel, Gary Egbert College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331. This data set provides the rare opportunity to investigate long term variations of MT parameters at short periods. Both sites are equipped with 3 induction coils and 2 x 100 m electric dipoles connected to a Quanterra digitizer.
Pink lines are the major faults.
The distance between the two sites is 150 km. Data and Processing Five components of the electromagnetic fields are recorded at 40 Hz and 1 Hz sampling rates. The 1 Hz data covers the years 1996 and 1997. Due to system outages 588 of the 731 days of data are available. The black line gives the median filtered values which emphasize long term variations.