POISSON RATIO OF A SEAWARD-DIPPING REFLECTOR SERIES, HATTON-BANK

Seismic reflection profiles across the Hatton Bank continental margin in the eastern North Atlantic have imaged thick sequences of seaward-d ipping reflectors. Converted shear waves propagating through one of th ese sequences were recorded on a two-ship expanding spread profile jus t landward of the ocean-continent transition. Synthetic seismogram mod elling of these shear waves indicates that Poisson's ratio in the sequ ence is 0.27 +/- 0.01, similar to that of normal oceanic Layer 2.