Figure 6

(a) Digital elevation model of the Breklum church (former medieval main church of the Nordergoesharde) (GeoBasis-DE/LVermGeo SH/CC BY 4.0) together with the geophysical results from the Rungholt area. The elevation model is superimposed by the ground plan of the Breklum church. (b) summary of all observed features in both magnetic gradiometry and EMI measurements. (c) Basic reconstruction of the church site based on comparable buildings from the same period. (d) model of the development of the church terp starting before Frisian colonization until today tidal flats together with the EMI inverted electrical conductivity profile.