MAGNETOMETRY

The data were processed on board. The IGRF reduced data ranged from -900 to slightly above 1000 nT. Further processing will require the analysis of the closest observatory data. Figure 19 shows one day of data collected against the data of two INTERMAGNET observatories.

**Figure 19:** Example of the data collected during the cruise (median filtered, window 60 sec). Also shown the unfiltered data from the INTERMAGNET observatories of Addis Abeba (Ethiopia, long.38.77, alt.2400m), red line, and of Qsaybeh (Lebanon, long. 35.6, alt. 540m), blue line. The observatory data have been offset to the mean value of 40500 nT for comparison.
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