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Issue: 43 | August 2016
Welcome! 
 
Coastal engineers will be aware that the Project Team has been undertaking a strategic review of the survey regime, in the light of 15 years of data collection.  The review has now been completed and coastal engineers will be contacted by their area representative in early September for their comments on the proposed new survey regime for their frontage, together with details on how the review was undertaken and the rationale behind it.  We have also been in touch with coastal engineers recently to review their usage (or otherwise) of SANDS software, using a Google forms questionnaire devised by Dan Amos.  The questionnaire took only a few minutes to complete and the quick response of engineers has led us to think that this is a straightforward way to canvass views of our partners in future.  The results of the survey will be revealed at the Annual Partners Meeting.
 
Travis Mason – Regional Co-ordinator
Annual Partners’ Meeting
 
The Annual Partners’ Meeting will be held on Thursday 3rd November 2016 at Field Place, Worthing.  Invitations and programme will be sent in the autumn, but in the meantime please make a note of the date. 
Website download limit

All registered users can now download up to 1 gigabyte of data from the map viewer. This is especially good news for users downloading recent aerial photography as these tiles are particularly large. They consist of 4 bands (Red, Green, Blue, Near Infra-Red) instead of the usual 3 bands (RGB).
How real time are our real-time data?
 
People sometimes ask if more recent data could be displayed on the Realtime page of channelcoast.org. Some clarification usually helps satisfy users that the data are more real time than they may appear initially. The first point to mention is that, by convention, data are always provided in GMT. Previously there was an explanation of this at the top of each page but recently, to avoid confusion, we have added (GMT) next to all instances of time on all graphs. The second point is that, again by convention, all data files are time stamped at the start of each recording period. So in the case of wave buoys – they record data for 30 minutes (met stations and tide gauges record for 10 minutes), then wave parameters are calculated for this period and sent to the website.

So for example, the screenshot below taken at 14:05 BST on 09/06/2016 shows wave heights at Weymouth. At first glance the most recent reading (12:30 GMT) might appear to be over an hour and a half old when in fact it covers the period 13:30-14:00 BST and is therefore only 5 minutes old. Readings are not always uploaded this quickly but if the above points are taken into account they may be more recent than first thought.
Additional wave buoy data from North Wales
 
Eagle-eye users of the real-time wave data may have spotted new arrows on the map.  Two Datawell Waverider buoys are operated off the north Wales coast by RWE Innogy UK Limited, who have kindly permitted the data to be made freely available via the website.  The buoys were first deployed in 2007.  To date, all the data from the Rhyl Flats site has been archived on the website’s Data Catalogue, along with data from Gwynt y
Môr since March this year.  Earlier data will follow in due course. 
Medmerry
 
In 2013, the CCO were commissioned by the Environment Agency to undertake monitoring of the breach on the UK’s first and Europe’s largest open-coast managed realignment scheme at Medmerry, West Sussex.
 
To date, 21 topographic surveys of the breach area have been completed and the results catalogue the considerable changes that have occurred since the breach in August 2013. The majority of the surveys cover the area 500 m either side of the main breach channel but a full baseline survey of the frontage from Selsey Bill to the Bracklesham rock armour is undertaken annually to analyse the change to the frontage as a whole.  Annual single beam bathymetric surveys extend  250 m offshore, and into the breach mouth, and together with the topographic surveys have documented the morphological change of the site in the last 3 years.
 
Earlier this year it was noted that some change was also occurring outside the main breach survey area; in particular the crest of the western arm was starting to roll back and flatten towards the western rock armour at Bracklesham. As a result, additional funding was secured from the Environment Agency to extend our quarterly surveys to capture the whole Medmerry frontage between the eastern and western rock armour.
Medmerry from above, September 2015. Copyright A. Colenutt.
FEATURE ARTICLE
Bi-modal workshop to launch new shingle beach profile response model

At the end of June we hosted a workshop here at the National Oceanography Centre, Southampton to launch Shingle-B - a new parametric model developed in association with HR Wallingford. The model predicts the profile response of shingle beaches to bi-modal sea conditions thus providing an update to the widely used SHINGLE model. Shingle-B was the final outcome of an extensive physical model study in the long wave flume at HR Wallingford, investigating the effects of bi-modal seas on gravel beaches, which was instigated and designed by Andy Bradbury. As such, although the “B” nominally stands for bi-modal, for some of us it will always be a reminder of its founder.

The online model is available for free on www.coastalmonitoring.org (see image below) and is very easy to use. The report and user manual will be out shortly but users can try it out now. The inputs include an overall significant wave height, percentage swell and a separate peak period for the swell and the wind wave components. A prototype profile for the conditions to act on can also be uploaded or drawn in the model itself. The model then displays the initial and post-storm profiles together and provides the option to download a report detailing the input conditions, output parameters and a confidence interval.
The launch workshop was attended by local authority engineers, consultants, academics and representatives from the regional coastal monitoring programmes and the Environment Agency. The model was very well received with a lot of interest in making use of it in upcoming research and design projects.
The Shingle-B team from left to right: Travis Mason; Belen Lopez De San Roman Blanco; Bruce Tomlinson; Tim Pullen; Andrea Polidoro; David Wyncoll; Jack Eade.
The Modelling Shingle Beaches in Bi-modal Seas project was funded by the Environment Agency FDGiA.
Southeast Regional Coastal Monitoring Programme Area Representatives
 
Isle of Grain to Beachy Head 
Jonathan Clarke, Canterbury City Council,
Strategic.Monitoring@Canterbury.gov.uk 
01227 862535
 
Beachy Head to Selsey Bill    
Dan Amos, Adur & Worthing Councils,
Strategic.Monitoring@Adur-Worthing.gov.uk
01903 221376
 
Selsey Bill to Portland Bill
Andrew Colenutt, New Forest District Council,
Andrew.Colenutt@NFDC.gov.uk
02380 598468 

Channel Coastal Observatory

CCO@channelcoast.org
02380 598467
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