Fig. 9
From: Influence of geomagnetic storms on the quality of magnetotelluric impedance
Comparison of the MT sounding curves calculated by single-site and remote reference data processing using the storm and non-storm data observed at site 142. The black curves are calculated by the non-storm data with remote reference processing (non-storm-RR); the blue curves are calculated by storm data with remote reference processing (storm-RR); and the red curves are calculated by storm data with single-site data processing (storm). a–d Show the apparent resistivity. e–h Show the impedance phase. The horizontal axis denotes the period in seconds