Turbulence in the surfzone mixes momentum vertically, transmits stress to the sea bed, influences the structure of the crossand alongshore currents, and controls the suspension of sediment from the sea bed. In many coastal and shelf environments, the sea-bed is the primary source of tur­ bulence due to bottom induced shear. In the surfzone, the breaking-wave generated turbulence dominates over ...

The principal objective of this work has been to develop a set of mechanical, remote-sensing tools that will permit the determination of the main geotechnical variables that control mine burial in the bottom. These variables include the shear strength of both soft, fine-grained sediments and coarser, dilative granular sediments. A further objective is to understand better the response of typica...

In this paper we propose a method for the classification and mapping of habitats in Wadden Sea areas from lidar data. For this task, we derive crucial features from the 3D point cloud based on the geometry and intensity of the backscatter. The characteristics of three different classes (water, mudflat, mussel bed) are learned in a training step of a supervised classification approach. For this ...

This project seeks to improve the reliability of air-sea interfacial flux parameterizations in coupled sea state/marine weather forecasting models, with a particular focus on refining and incorporating the role of wave breaking and sea spray in severe conditions. The approach adopted is to develop more realistic parameterizations for breaking occurrence and strength, and sea spray/spume source ...

ISBN 978-3-540-92142-4 digitally watermarked, no DRM included format: PDF eBooks can be used on all Reading Devices.Pigmentation patterns of shells of mollusks a natural picture book to study dynamic. Scaphopods that one may find classified in a good seashell bookguide. Meinhardt, The Algorithmic Beauty of Sea Shells, Springer.This paper presents a method for modeling seashells, suitable for im...

After the major loss of eelgrass habitats in the 1930s the snake pipefish Entelurus aequoreus was considered to be rare in the Wadden Sea (south-eastern North Sea, German Bight). We hypothesize that a sudden increase in pipefish abundance observed in the area since 2004 is related to new habitats provided by the introduced Japanese seaweed Sargassum muticum. SCUBA observations conducted near th...

Marine-based ice streams whose beds deepen inland are thought to be inherently unstable1–3. This instability is of particular concern because significant portions of the marinebased West Antarctic and Greenland ice sheets are losing mass and their retreat could contribute significantly to future sea-level rise4–7. However, the present understanding of icestream stability is limited by observati...

In dynamic analysis of floating structures, the designer needs to know the wave forces due to incident and scattered waves on the structure. In this work, the flow field around the body is solved based on the potential theory with considering the free surface and sea bed effects. Using this theory, the wave forces exerted on two typical sea buoys with spherical and disc-type bodies are determin...