A comparison between the suspended sediment concentrations derived from DELFT3D model and collected using transmissometer – a case study in tidally dominated area of Dithmarschen Bight
Summary The objective of this investigation is to verify the deficiencies that incorporate both modelled and measured suspended sediment concentrations (SSC) data in a tidal dominated area. For this purpose a tidal channel, in the North Sea, was considered as the case study. The profiles of SSC from a model were compared with those from the field, in which some dissimilarity was observed. Intensive investigations were carried out to detect that the most discrepancies occur in shallow parts of the area and also during the low velocities. The origin of the shortcomings in regard with the modelling and measuring technique are discussed.
Abstract To combat against persistent sex offenders, recent laws call for the use of the GPS technology to monitor their movements. In [1] , it has been proposed the adoption of a Spatio-Temporal DataBase (S-T DB) for archiving this type of complex data, besides traditional ones (i.e., data about their home, (pending) crimes, and sensible areas). In the present paper we discuss investigative strategies that can be easily implemented on top of such a kind of database by taking advantage of the history of the movements of sex offenders. As implementation platform, the SECONDO DB Management System (DBMS) is adopted since it supports a data type about moving objects as well as a reach set of spatio-temporal operators to query such complex data [2] .