Modelling the influence of storm related processes and their frequencies of occurrence on sand wave dynamics in the North Sea

Schrijen, E.P.W.J. (2017) Modelling the influence of storm related processes and their frequencies of occurrence on sand wave dynamics in the North Sea.

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Abstract:Large parts of the sea bed of shallow shelf seas, such as the North Sea, are covered with sand waves. Sand waves are medium-scale bedforms characterized by wave heights of several meters and migration rates up to tens of meters per year. Knowledge about the behavior of sand waves is of importance since they can form a hazard to pipelines, communication cables, offshore constructions and navigation. Campmans et al. (2017) state that waves and wind indeed can play a significant role in sand wave dynamics. However since storms occur only for a small fraction of the time during a year Campmans et al. (2017) have stated that “to assess the averaged model effect of storms on sand wave dynamics a statistical approach is required” (p14). The goal of this thesis is therefore to investigate the influence of the wind- and wave climate and in particular storms, consisting of a combination of the storm related processes of wind waves and wind-driven flow and its frequencies of occurrence, on sand wave dynamics by applying a statistically combined wave and wind climate to the idealized sand wave model of Campmans et al. (2017) and analyzing its results. This research aims to answer the following questions: 1. What is the wind- and wave climate at the research location? 2. Based on the idealized sand wave model of Campmans et al. (2017): a) what is the influence of the storm related processes and their frequencies of occurrence on the growth- and migration rate of sand waves? b) which storm related processes make the biggest contribution to the resulting growth- and migration rate?
Item Type:Essay (Master)
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Civil Engineering and Management MSc (60026)
Link to this item:http://purl.utwente.nl/essays/72465
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