Tidal Currents from AIS Data

Studying Currents in the Gibraltar Straits
Currents are traditionally measured with buoys and drifters, but such surveys are expensive and results are scarce. Almost all ships are equipped with an automatic identification system (AIS), primarily to improve shipping safety. Broadcast AIS signals contain information about the ship’s identity, position, speed and heading. These signals are collected at coastal stations where time stamps are added. The resulting time series make it possible to track individual ships and analyse their movements. This article shows the results of a case study in the Strait of Gibraltar making use of freely available AIS data. The method presented turns passing ships into... (read more)
2017-08-15 01:09:46

Data Transmission Tests in Advance of Tidal Power Test Site

Engineers associated with the Bourne Tidal Test Site (BTTS) have been field testing a simulation of the data acquisition system that will be installed on the actual tidal turbine test structure. BTTS is going through its last paces for permitting and once the US Army Corps of Engineers, USACE, signs off, the actual test structure will be installed. To enable tidal device designers and developers to understand how their turbine is performing in the Cape Cod Canal, they will need to know what the current velocity is during all tide cycles. In order to do that, a team of engineers,... (read more)
2017-07-26 08:30:54

Tidal Energy Plant Gets Smarter with Data Intelligence Platform

Sabella, a pioneering tidal and ocean stream turbine developer, has partnered with QOS Energy to improve the performance monitoring of its ground-breaking Ushant tidal energy project. The first 1MW tidal turbine of the plant, immersed 55m underwater off the west coast of France, is equipped with more than 100 sensors gathering data every 5 minutes. It now uses QOS Energy’s powerful data intelligence platform to identify, assess and anticipate potential failures. Sabella’s 1MW D10 turbine was initially commissioned in 2015 in the Fromveur Passage, a strait that lies between Ushant Island and the Molène archipelago, off the coast of the... (read more)
2018-12-18 09:08:26

Quantifying Tidal Energy Resource

Partrac's oceanographic team was recently commissioned by SeaGen Wales Ltd, to measure the tidal current energy and the wave climate for a proposed tidal energy farm. SeaGen Wales is a joint initiative between Marine Current Turbines and Npower Renewables to take forward a 10.5MW project using seven SeaGen turbines, off the coast of Anglesey, North Wales. It is hoped the tidal farm will be commissioned around 2011/2012.   Underlying the success of the UK tidal energy sector is the issue of resource measurement. High quality data of the available tidal energy resource at a site is required before developers, and... (read more)
2009-04-06 03:19:05

Tidal Turbine Recovery

Nova Scotia Power and its technology partner, OpenHydro, have successfully completed recovery of OpenHydro's demonstration turbine from the Minas Passage. Recovery of the 400 tonne tidal turbine represents a first for OpenHydro and a first for the Bay of Fundy. The structure appears to be in excellent condition overall and, consistent with the images obtained this summer, all of the blades are missing from the centre of the unit. It's too early to be certain but it appears this is the result of the tidal regime being much stronger than initially believed. A detailed engineering analysis will providemore information and... (read more)
2011-01-03 12:07:00

Wave & Tidal 2017

The event will showcase our sector’s innovation and the opportunity which wave and tidal offers the UK: bringing industry together with political decision-makers. Held across 24 hours it will contain a two-stream strong programme, an industry-led exhibition, and plenty of networking opportunities including a pre-event networking reception in the capital and the fourth RenewableUK Marine Energy Policy Forum. The event will bring together leading developers, OEM’s, financial and innovation funding experts, technical and safety professionals, regulators and government stakeholders representing the range of interests across the UK, and widerinternational marine energy supply chain. (read more)
2016-09-20 08:41:08

Renewable Tidal Energy Event

The NAMTEC Manufacturing Forum, UK, is to host an event on Marine Renewables: Harnessing the Supply Chain Potential in Wave and Tidal Energy on Thursday 8th September 2011, at the Ramada Jarvis, Willerby hotel near Hull.     This event will provide delegates with the opportunity to engage into this fast-growing market sector at an early stage, providing a clear view of the potential for future commercial revenue and networking opportunities.   Attendees will have the opportunity to meet leading UK organisations, recognised as world leaders in driving the development and implementation of marine devices, which will outline their technologies,... (read more)
2011-08-25 09:30:36

Easy Access Tidal Information

ARGOSS has launched a new Web-based service, www.tidal-info.com, to provide tidal heights and currents for any location around the world. The service is based on the assimilation of nine years of satellite altimeter observations and measurements of approximately five thousand tidal stations in a tidal model. Users can generate statistical tidal information or time series for any location of interest through an easily accessible and interactive interface. Time series of tidal height, tidal current speed or current direction are available at ten-minute intervals, starting from a user-specified time/date, and cover a full tidal cycle of four weeks. Statistical information comprises... (read more)
2003-10-23 12:00:00

1000MW Tidal Energy

Aquamarine Power has signed a Development Agreement with Airtricity, the renewable energy development division of Scottish and Southern Energy, aimed at developing sites capable of hosting 1,000MW of marine energy by 2020. The two companies will enter into a 50:50 joint venture to develop wave and tidal energy sites in the UK and Republic of Ireland. Work on the development of the first two sites has already started, with plans to roll out further sites over the next three years.     To complement its technology development, Aquamarine's in-house site development team has developed unique tools to identify and evaluate... (read more)
2009-03-16 03:34:18

Satellite Observations to Retrieve Tidal Sea Level and Tidal Currents

Prediction of tides is important for many things, including safe navigation, coastal engineering and surveying. To determine tidal constituents, a sea level time series from a tide gauge can be used. Satellite altimeters are able to measure sea level differences. These measurements have been used to describe the large-scale tides in the open ocean. This article describes a technique for obtaining tidal information in coastal areas by combining satellite data with in situ measurements.<P> Tides are responsible for a large part of the movement of water in oceans and seas. The ability to predict tides is important not only for... (read more)
2008-04-02 12:00:00
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