Extended Data Fig. 5: Measured RF magnetic flux at water level in the testing environments in the two RF experiments.
From: Learned magnetic map cues and two mechanisms of magnetoreception in turtles
(a) Magnetic flux density of the broadband oscillating magnetic fields, as well as the background magnetic field fluctuations, produced during the map assay experiments. Single runs (a single measurement of the field) are displayed as vertical dashed lines and are digitized with 25 MHz sampling frequency and a 2048 sample buffer. Measurements extended to 12 MHz but only values in the targeted range (0.1–10 MHz) were included in calculations. (b) Magnetic flux density of the broadband magnetic fields produced and the background magnetic field fluctuations during the compass & map assay experiments. Single runs are displayed as vertical dashed lines and are digitized with 20 MHz sampling frequency and a 1200 sample buffer. In (a) and (b) solid lines represent the average magnetic noise density, calculated from 10 and 8 repeated measurements respectively.
