1st
Tell el-Daba geophysical survey
Tomasz Herbich has now returned to give a talk on the geophysical survey at Tell el-Daba. He started by explaining the technology of various types of magnetic scanning and how results are obtained.

Scanning revealed what turned out to be the Hyksos Palace (see Manfred’s article in EA 38!).
In the eastern part of the town using a caesium magnetometer it was possible to locate the river Nile: caesium magnetometry is particularly useful for identifying geological features. Resistivity surveys can also be used over even greater distances to trace the river courses and identify geological deposits.

Tomasz ended by pointing out that good magnetic scans can be very useful for Field Directors trying to describe to visitors sites where nothing is visible on the surface!