Estimating postglacial coastal sediment budgets is difficult as erosion has removed the landscape drowned by marine transgression and coastal positions through time are rarely known. In the Natural Environment Research Council (NERC)–funded Land Ocean Interaction Study, a model was built, based on detailed characterization of onshore-offshore bathymetric profiles (created by Holocene wave-base migration). Modeling of the pre-Holocene western North Sea land surface (west of 1°E and south of 54°N) and sea-level curves allow determination of the likely position of wave base and coast at any time during the late Holocene. The volumes of materials eroded from cliffs, wave action on...