title: Sedimentology models from activity concentration measurements: application to the "Bay of Cadiz" Natural Park (SW Spain).
abstract: A previous study on seabed sediments of the Bay of Cadiz (SW of Spain) enabled us to identify several relations between sedimentological variables and activity concentrations of environmental radionuclides such as (137)Cs, (226)Ra, (232)Th and (40)K. In this paper the study has been extended to a large neighbouring inter-tidal area in order to establish if the above mentioned models can be generalized. As a result we have determined that the measured activity concentrations are closely to the values predicted by the theoretical models (correlation coefficient range=0.85-0.93). Furthermore, the proposal model for granulometric facies as a function of activity concentrations of the abovementioned radionuclides provides for the sediments distribution a representation which agrees with the values of the tidal energy distribution obtained using numeric models calibrated with experimental data from current meters and water level recorders.
authors.affiliation: Departamento de Física Aplicada. Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain. rufino.ligero@uca.es
authors.forename: R A
authors.initials: RA
authors.lastname: Ligero
authors.forename: J
authors.initials: J
authors.lastname: Vidal
authors.forename: M J
authors.initials: MJ
authors.lastname: Meléndez
authors.forename: M
authors.initials: M
authors.lastname: Hamani
authors.forename: M
authors.initials: M
authors.lastname: Casas-Ruiz
mesh_terms: D002588:Cesium Radioisotopes / Q000032:analysis; D019015:Geologic Sediments / Q000737:chemistry*; D008962:Models, Theoretical; D011197:Potassium Radioisotopes / Q000032:analysis; D011834:Radiation Monitoring; D011883:Radium / Q000032:analysis; D013030:Spain; D013910:Thorium / Q000032:analysis; D014872:Water Movements
chemical_list: D002588:Cesium Radioisotopes; D011197:Potassium Radioisotopes; D013910:Thorium; D011883:Radium