Fieldwork Coastal Engineering: Varna (Bulgaria)

A series of hydraulic measurements were carried out during the field trip, ranging from beach profiles to wave data collection and suitability of stones from local quarries for hydraulic purposes. In chapter 2 something is told about the tetrapods. At Sunny Day Beach in St. Constantine some sightseeing has been done on a breakwater. The quality of the concrete and the breakwater was inspected and some measurements have been done on the tetrapods. Chapter 3 deals with the beach measurements. In order to get an idea about the sand transport along the coast, some measurements have been done on the beach profile. This chapter also discusses the GPS measurements and the sieve analysis of the beach sand. In chapter 4 the wave measurements are discussed. Some measurements on the wave height and wave period and length were done. The results have been checked to see if the waves were Gauss distributed and if the data were reliable. There is also something told about the groyne measurements in chapter 5. In order to get a view on the stability and change in volume some results of measurements are discussed. By measuring different profiles, the volume could be calculated. And this volume has been compared to the groyne volume of last year. In chapter 6 the distribution of stones from a quarry are discussed. The distribution has also been plotted in a log and log Gauss graph to be able to draw conclusions. Finally a new design has been made for the groyne at St. Constantine by using the distribution of the stones from the quarry in the calculations. Chapter 7 finally discusses the bathymetry Survey. With an echo sounder and DGPS depthposition measurements have been done. With the data of these measurements volume calculations have been done. With these calculations it will be easy to compare the bottom profile in the coming years. These measurements have been done along the same coast as the beach measurements.