Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Keeping our sights on big breakers with radar

17.08.2009
GKSS coastal researchers study waves on the FINO3 research platform
Scientists of the Geesthacht GKSS Research Centre have developed a radar system with which it is possible to study the behaviour of sea waves. This technology will be used immediately on the North Sea on the FINO3 research platform in order to determine the interactions between offshore wind power machines and swells.

Image of the FINO3 platform on the North Sea. (Image: Bastian Barton/ FH Kiel)
The location of the FINO3 research platforms, the "Dan Tysk" sand bank, is located approximately 80 kilometres to the west of Sylt where up to 80 wind power plants will be located in just a few years. FINO3 is used by researchers to estimate the environmental consequences and technical risks of offshore wind energy parks. Changes in the sea swell are also of great interest in addition to the observations of bird migration or the measurement of lightening frequencies on the sea.

To determine how much of an effect large waves and what is known as ‘breakers’ have on wind power plants and to what extent the structures can change the surrounding swell, the coastal researchers of the Geesthacht GKSS Research Centre installed a Doppler radar approximately 50 metres above sea level on the FINO3 lattice mast.

"With our radar, we can even track the individual waves for the first time", writes Dr. Freidwart Ziemer, GKSS Department Manager of Radar Hydrology, the unique part of the project. For several years, Ziemer and his team have studied the swell and the behaviour of large breakers. The information is transmitted by FINO3 to Geesthacht via satellite.

Assessing swells better

The wave radar of the Geesthacht coastal researchers on the FINO3 measurement platform. (Photo: F. Ziemer/GKSS Research Centre Geesthacht)

The frequency of large breakers and the force which creates the steep giant waves are of particular interest not only to researchers but also the designers and operators of offshore wind power plants or oil platforms.

Each individual wind rotor creates turbulent air flows in its "tow" and periodical movements, which can have an effect on other structures. This can result in undesired or even dangerous vibrations. If there is an interaction between the waves and the individual wind power plants, this can result in interferences. This means in a wave field which is harmless without a windmill park, single, very high waves can be created by these interferences which could possibly have a critical effect on these plants.

"I am sure that we will soon be able to better assess the swells and the force of the breakers," says Friedwart Ziemer. This means that the breaker behaviour could be taken into account better in planning and the stability of the systems can be more predictable.

Solid position on the COSYNA North Sea monitoring system
The FINO3 research platform will be an important component in the new COSYNA measurement network initiated by GKSS. A comprehensive monitoring system will be created in the German North Sea area to record, predict and provide scientific analysis of the current state and development of the coastal waters with the major COSYNA project (Coastal Observation System for Northern and Arctic Seas).

FINO3 will provide the Geesthacht coast researchers information on seafaring and the wind. Breaker statistics are also planned. The Doppler radar technology was developed by the GKSS employees in unison with the Technical University of Saint Petersburg. The initial test readings with the new wave radar from the shore have already been carried out successfully.

The project coordinator of FINO3 is the research and development centre of the Kiel University of Applied Sciences (Fachhochschule Kiel GmbH). The project executing organisation is the Federal ministry of the environment, natural protection and reactor safety (BMU).

Dr. Friedwart Ziemer | EurekAlert!
Further information:
http://www.gkss.de

More articles from Earth Sciences:

nachricht Algorithm provides early warning system for tracking groundwater contamination
14.08.2018 | DOE/Lawrence Berkeley National Laboratory

nachricht Artificial Glaciers in Response to Climate Change?
10.08.2018 | Universität Heidelberg

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

Im Focus: Lining up surprising behaviors of superconductor with one of the world's strongest magnets

Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur

What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...

Im Focus: World record: Fastest 3-D tomographic images at BESSY II

The quality of materials often depends on the manufacturing process. In casting and welding, for example, the rate at which melts solidify and the resulting microstructure of the alloy is important. With metallic foams as well, it depends on exactly how the foaming process takes place. To understand these processes fully requires fast sensing capability. The fastest 3D tomographic images to date have now been achieved at the BESSY II X-ray source operated by the Helmholtz-Zentrum Berlin.

Dr. Francisco Garcia-Moreno and his team have designed a turntable that rotates ultra-stably about its axis at a constant rotational speed. This really depends...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

2018 Work Research Conference

25.07.2018 | Event News

 
Latest News

'Building up' stretchable electronics to be as multipurpose as your smartphone

14.08.2018 | Information Technology

During HIV infection, antibody can block B cells from fighting pathogens

14.08.2018 | Life Sciences

First study on physical properties of giant cancer cells may inform new treatments

14.08.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>