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Issue: 44 | October 2016
Welcome! 
 
This month’s newsletter contains two feature articles; in the first, CCO’s GIS analyst Sarah Geijsels demonstrates a new facility available from the website, and secondly Dan Amos from Adur and Worthing Councils discusses a suite of Matlab analysis tools written by his colleague to give additional insight into beach changes from surface (baseline) surveys.
 
We look forward to seeing many of our programme partners and colleagues from other organisations at our annual meeting on 3 November.

 
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 the programme have now been sent out; please RSVP  ASAP to poppy.mylroie@noc.soton.ac.uk. 
SANDS Questionnaire

As part of a review of coastal software used by coastal monitoring programme partners, this short questionnaire has been set up to understand your usage of CH2M's SANDS (Shoreline and Nearshore Data System) and gauge your opinion.

If you use SANDS and have not yet completed the questionnaire, could you please click on the link below:

https://goo.gl/forms/vcfkioqjC0gwdzGl1
Totland Landslide 

In December 2012 adverse weather caused a landslide at Totland damaging a section of the seawall and promenade and blocking access between Totland and Colwell.

In January 2013 the Channel Coastal Observatory used a Leica C10 laser scanner to scan the landslide and assess the damage caused by the landslip. The survey was undertaken again in August 2013 and September 2014. From the data collected it was possible to determine the distance moved by the sea wall from its original location, sourced from 2008 aerial photography, along set profile lines down the landslip.

These surveys assisted the IOW Council in their ‘make do and mend’ scheme completed in September 2015 by local company Graham Attrill Civil Engineering to remove parts of the damaged sea wall, lay a new sub base and install drainage, while creating a path over the top of the landslide reopening access along this popular coastal path. This work was completed on time and on budget.

The Channel Coastal Observatory’s subsequent surveys in October 2015 and October 2016 have been undertaken to ensure no more significant movement is detected and the new pathway and drainage system is operating as planned.
Copyright: HM Solent Coastguard
Click the image for a full size version
FEATURE ARTICLE
Map viewer layers available as WMS

 
A number of map viewer layers are now available as a Web Map Service (WMS) in ArcMap and QGIS. WMS layers request georeferenced images from a server and display them, but do not download or store the data they are displaying on the computer. This means you can use www.coastalmonitoring.org data directly in a GIS and overlay it with your own data, without having to download individual tiles first.  All that is needed is an internet connection and an account on the CCO website.

Note that “Image” is the key word here; the data are viewable (and even query-able with the QGIS and ArcGIS identify tools) but it is not possible to change the symbology or use the layers for calculations.  For image analysis, raster analysis, creating difference models etc., you would still need to download the data from the map viewer first.

 
Locally stored profiles overlaid on 2013 aerial, lidar and bathymetry WMS layers in ArcMap. Bathymetry depth queried.
The following datasets are available as a WMS:
  • Ortho-rectified aerial photography (RGB and FCIR)
  • Lidar
  • Swath (multibeam) bathymetry
  • Habitat mapping (for areas where OS MasterMap was not used to map habitats, for copyright reasons)
  • GPS control points
  • Wave buoys and tide gauges
  • OSGB grid
The aerial, lidar and  swath bathymetry layers consist of 3 sub-layers per year: an index layer, a large scale layer and a small scale layer. Their visibility depends on the scale they are being viewed at, just like on the website. The wave buoy, tide gauge and GPS control points can be queried with identify tools in QGIS and ArcMap to display real-time data.
Herne Bay real-time page in Qgis identify results
To access the WMS layers in ArcMap, use “Add data” as you would for a normal layer, scroll down to “GIS Servers” and choose “Add WMS Server”. Copy the following URL in the URL box: http://metadb.geodata.soton.ac.uk/data_management/wms/wms3.php? and click “Get Layers”.

In the User/Password boxes, type your channelcoast.org user name (this is the email address you have registered with) and password. Leave the “Save Password” box unchecked and click OK. Now the CCO server will have been added to the GIS servers list. You can add all the available layers by highlighting “Channel Coastal Observatory on metadb.geodata.soton.ac.uk” and click add, or choose individual layers to add by double-clicking “Channel Coastal Observatory on metadb.geodata.soton.ac.uk” and keep clicking through the layer tree to add individual layers.

To access the WMS layers in QGIS, a sample project file will be put on the website with the aerial (RGB), multibeam and lidar layers set up. Individual layers can be added by using the “Add Layer(s) from a WM(T)S Server” tool. Click New and choose a name to display for the WMS. Copy
http://metadb.geodata.soton.ac.uk/data_management/wms/wms3.php? into the URL box, fill out User name box (the email address you have registered to the website with) and hit OK (leave Password blank). Choose the name you have picked from the layers dropdown list and click connect. Choose the layers you want to add. Choose PNG image encoding to make the background of each layer transparent.

If you publish any maps using the WMS layers, please acknowledge the appropriate copyright owner and Regional Coastal Monitoring Programme. We hope you will find this facility useful, please “Send feedback” or tweet
@channelcoast to tell us how you’re using the WMS layers.
Walking to Scotland and Wales
 
Between June and August 2016, the Canterbury survey team walked a staggering 1,249 km along the Kent frontage and with the aid of the quad bike a further 774 km was covered.

2,023 km would have taken us from our offices in Canterbury to John O’Groats and back again (although we were about 140 km short – must try harder next year!).  This is the same as walking to the Welsh border. 
  
After all that walking, the team were very glad to get a few weeks in the office before we started the autumn surveys!
New Checkpoints from Sandwich Bay to Camber Sands

Canterbury City Council took over the beach surveying from Pegwell Bay to Camber Sands.  A number of control points had been covered by beach material or damaged. In September, Canterbury installed new pins near each base station to act as E3 control points.
FEATURE ARTICLE
Adur & Worthing’s Coastal Survey Team’s Data Analysis Program

 
Completed in 2016 (courtesy of James Bovington) the data analysis program automates and extends the outputs the Adur & Worthing Coastal Survey Team is able to achieve. The program is used in the production of Beach Management Plan (BMP) and annual report analysis for both difference model calculations and, in the most recent update, for the production of figures which can be inserted straight into reports. Previous methodology involved separate steps taking place within MapInfo, Excel and Matlab. The vast majority of our analysis can now take place within one program.
Screenshot shows our data analysis program with a survey loaded (green points on orthophoto)
DTMs
The following screenshots are figures which can be directly copied into annual and BMP reports:
Above is the 25/05/2016 survey digital terrain model (DTM)
The DTMs can also be manipulated in 3D allowing for more detailed/targeted figures:
Difference Models
The program can also be used to load in any two surveys in a survey unit and calculate the difference model (red = erosion, blue = accretion):
Profiles
The screenshot below shows all the standard profiles (blue) within survey unit 4dSU20. Any of these can be plotted for reference. We can also plot a profile between any two manually selected points in a survey for a more targeted view:
We can also plot a profile between any two manually selected points in a survey for a more targeted view:
Trend Mapping
Our annual reports now contain trend analysis. Trend mapping is intended to summarise the changes in elevation of a frontage through time in a single model. Whilst this aim is also achieved by a simple graph of total volume over time, trend mapping allows the independent consideration of the history and future of any points of interest and sub-regions within the modelled study area. Below is an example trend and correlation plot:
Trend plot - This unit shows little change with some areas of slight erosion where there are darker yellow patches.
Correlation plot – The confidence in this trend is very high through-out. Some areas of slightly lower confidence lay on the shoreline and on a strip on the back of beach area.
Animations
We can animate all our survey units using all survey data and interpolation between them to create a smooth video of its evolution. This has been used recently in the analysis of last winter’s breach of Pagham Spit, which can be seen here: https://www.youtube.com/watch?v=CownqofxLqs

Our data can also be used to show tide flow and reach in an animation on any selected survey. This is done by loading in the required survey and picking the tide level required (MLWN, MHW etc).

Future
This is a continually developing program. It has currently reached a stable edition and is complete for our current reporting/analysis needs. It is a flexible tool and can be modified to our evolving needs as it has done to date. As we move into new technologies (static laser scanning, UAV etc.), the scripts can be edited and more functions bolted on to keep this tool current and competitive.
Southeast Regional Coastal Monitoring Programme Area Representatives
 
Isle of Grain to Beachy Head 
Claire Milburn, Canterbury City Council,
Strategic.Monitoring@Canterbury.gov.uk 
01227 862 537

 
Beachy Head to Selsey Bill    
Dan Amos, Adur & Worthing Councils,
Strategic.Monitoring@Adur-Worthing.gov.uk
01903 221376
 
Selsey Bill to Portland Bill
Stuart McVey, New Forest District Council,
Stuart.McVey@noc.soton.ac.uk
02380 598641

Channel Coastal Observatory

CCO@channelcoast.org
02380 598467
Social Media
 
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Channel Coastal Observatory · National Oceanography Centre · European Way · Southampton, Hampshire SO14 3ZH · United Kingdom

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