Porosity and free gas estimates from controlled source electromagnetic data at the Scanner Pockmark in the North Sea

•Multidisciplinary approach to estimate physical properties using controlled source electromagnetic, seismic reflection and core logging data.•In the Scanner Pockmark area in the Central North Sea glaciomarine sediment porosity decreases in the top 150 mbsf from 50±10% to 25±3% due to compaction.•Gas concentrations estimated from resistivity models are up to 34±14% in a glacial till deposit that forms an intermediate reservoir in an active fluid migration and venting system.