Coastal Response on Multiple Scales: a Pilot Study
Abstract
There is a growing demand to assess the impact of both small scale and large scale anthropogenic activities on all relevant spatial and temporal scales (e.g. from 10 m to 100 km and hours to decades) including effects of climate change and sea level rise. This requires a comprehensive approach which deals with the appropriate scales in a continuous way. However, most of our knowledge and predictive tools are designed to cover very specific scales. Furthermore, the fact that coupled behavior covering multiple scales may be the dominant force does not allow for a simple sub-division of scales and study approaches without taking the interaction into account. In essence we anticipate that such a modeling framework will primarily be related to innovative application, combination and interpretation of existing techniques and models rather then the improvement of individual models. As a first step a pilot study was initiated in which the impact of the extension of the IJmuiden harbor moles in 1965 was investigated (Figure 1). The long term dataset enables us to investigate the harbor impact on various temporal and spatial scales. To that end a combined modeling approach was set up focusing on the local scale using the Delft3D model and a coastline model Unibest-CL+ covering the entire Holland coast. The models were first individually calibrated and validated to assess their performance and ability to simulate the relevant impacts. This should provide insight into the benefits of such a combined approach and identify the different levels of impact in both time and space. Holland Coast with the IJmuiden Port (left plot) and dtail of the IJmuiden harbor (2008) and the 1965 mean low water (blue), mean high water (green) and dune foot positions (red) (right plot)
Target transports based on sediment budget (dashed) and simulated transports (red) along the Holland coast (IJmuiden is located at KM = 61)- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2010
- Bibcode:
- 2010AGUFMEP31D..08L
- Keywords:
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- 3022 MARINE GEOLOGY AND GEOPHYSICS / Marine sediments: processes and transport;
- 9335 GEOGRAPHIC LOCATION / Europe