Geophysical Data

In this section a short summary is given of the existing geophysical data and their characteristics. Comments on their interpretation are given in a following section.

Fig. 7. VLF total intensity map of the Siljan region compiled by the Geological Survey of Sweden. The anomalies are given of the induced secondary field in o/oo of the primary field. The transmitter is located to the SW (in southern England).
Fig. 8. Bouguer gravity anomaly map of the Siljan region compiled by the Geological Survey of Sweden. The contour interval is 1 mgal (10 gu) and the gray tone shading represents 5 mgal intervals.

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