1. EMODNET Preparatory Actions Hydrographic and Seabed Mapping Service Contracts MARE/2008/03 S12.531515 and MARE/2009/07 S12.563144 By Dick M.A. Schaap – Coordinator Brussels - Belgium, 7th June 2011, EMODnet Concertation Meeting

2. Hydrographic and Seabed Mapping – partnership Members of the SeaDataNet consortium together with other organisations from marine science, the hydrographic survey community, and industry: MARIS – NL (Management, DM and IT expertise) IFREMER – FR (Research institute) ATLIS – NL (IT expertise, DM hydrography) IEO – ES (Research institute) NERC-NOC – UK (Research institute) GSI – IE (HO – Ireland) SHOM – FR (HO – France) UNEP-GRID Arendal – NO (International Organisation) OGS – Oceanography department (IT) (Research Institute) HCMR (GR) (Research Institute) Plus Associate partners: ISMAR-CNR –IT, OGS-RIMA – IT, LNEG – PT, UTM- CSIC – ES, NIOZ - NL (Research Institutes) + IHPT – PT (HO) Plus Data provider agreements with HO’s from Germany, Norway, Denmark, Netherlands and Belgium

3. Hydrographic lot – approach The following approach has been implemented: Involve research institutes, monitoring authorities, and HO’s, in providing hydrographic data sets from which Digital Terrain Models (DTM) are produced with resolution of 0,25 * 0,25 minutes for each geographical region and that are loaded and integrated afterwards into a spatial database at the Portal Outfit the spatial database as a powerful and a high-end Hydrographic data products viewing and downloading service that is complemented with WMS services (OGC) to serve users and to provide map layers for e.g. the other EMODnet portals, the prototype European Atlas of the Seas, and the broad-scale European Marine Habitats map; Include in the portal a metadata discovery and access service by adopting the SeaDataNet CDI data discovery and access service that gives clear information about the hydrographic survey data used for the DTM, their access restrictions and distributors; this also ensures the connection of the Hydrographic portal with the SeaDataNet portal, which includes a shopping mechanism for requesting access to basic measurements data.

4. Hydrographic lot – system architecture

5. Hydrographic lot – resulting portal http://www.emodnet-hydrography.eu CDI metadata serviceData products service

6. Hydrographic lot – Data access policy The CDI metadata in the EMODnet pilot are public domain and freely available for all users. The resulting DTM data products (GIS layers) are freely available for all users as OGC WMS service and for downloading in several formats. The access to background data sets as detailed in the data inventory and as used for the products respects the data copyrights of owners. The CDI metadata includes a value for data access restriction for every data set it manages as well as a clear indication of the distributor. The SeaDataNet CDI shopping mechanism is fit for dealing with different access restrictions.

7. Hydrographic lot - Geographical coverage The EMODnet Hydrography lot started in 2009 with a focus on: the Greater North Sea, including the Kattegat and stretches of water such as Fair Isle, Cromarty, Forth, Forties,Dover, Wight, and Portland the English Channel and Celtic Seas Western Mediterranean, the Ionian Sea and the Central Mediterranean Sea The EMODnet Seabed mapping lot started in 2010 and extends coverage to: Iberian Coast and Bay of Biscay (Atlantic Ocean) Adriatic Sea (Mediterranean) Aegean - Levantine Sea (Mediterranean).

8. Hydrographic lot - products The following geographical information system layers are produced: water depth in gridded form over whole of maritime basin on a grid of 0,25 * 0,25 minutes => DTM with multiple parameters per grid cell water depth in vector form with isobaths at a scale of at least one to one million => contours derived from gridded waterdepth. depth profiles along tracklines => user made cross sections of DTM multibeam surveys along tracklines => CDI metadata of tracks and polygons Coastlines => adoption of Global Self-consistent, Hierarchical, High-resolution Shoreline Database (GSHHS) 1 : 250.000 underwater features – wrecks, seabed obstructions etc => delivery by HO’s as ENC features

9. Hydrographic lot - QA/QC and DTM specifications QA/QC specifications have been prepared. It specifies the DTM to be produced and the QA / QC methodology to be applied. The specifications are finalized in the “Guideline for methodology, metadata and QC standards V1”, that can be downloaded from the website. Each DTM grid cell has the following parameters: Depth average in meters to LAT Depth Min/Max in meters to LAT Number of depth values used for interpolation Depth standard deviation (as percentage of the water depth) Smoothed depth average in meters to LAT Number of elementary surfaces used to compute the average cell depth An indicator of the offsets between the average and smoothed depth (as a % of the depth) Source of data: Surveys: link to Common Data Index (CDI) metadata sheet of most prevailing survey in the cell Composite DTM: link to DTM metadata sheet GEBCO: reference to GEBCO version

10. Hydrographic lot – Data gathering approach Various organisations are engaged in the acquisition and provision of hydrographic data and data products. These comprise: Hydrographic Offices, that are responsible for surveying the navigation routes, fairways and harbour approach channels and producing from these the nautical charts on paper and as Electronic Nautical Charts (ENC), that are used for navigation. Authorities, responsible for management and maintenance of harbours, coastal defences, shipping channels and waterways. These authorities operate or contract regular bathymetric monitoring surveys to assure that an agreed nautical depth is maintained or to secure the state of the coastal defences. Research institutes, that collect multibeam surveys as part of their scientific cruises. Industry, especially the energy industry, that contracts multibeam surveys for pipeline and cable routes (in case of windfarms) and the telecommunication industry for phone and internet cable routes. Cooperation is sought from these organisations for data sets (single and multibeam surveys, sounding tracks, composite products) to support a good geographical coverage and high quality.

11. Hydrographic lot – Data processing approach The data sets are used internally for producing regional Digital Terrain Models (DTM). The DTMs are integrated into an overall DTM at the public portal for browsing and downloading The survey data sets themselves are not distributed but described in the CDI metadata, giving clear information about the background survey data used for the DTM, and facilitating requests by users to originators. The composite DTMs received from some Hydrographic Offices are also not distributed but described in a DTM metadata sheet, giving information about the background and originators of these products.

12. Hydrographic lot – Data processing coordination Example for the Mediterranean Sea

13. Hydrographic lot – Data contributing and coverage Example for the Western Mediterranean Sea

14. Data gathering per region: North Sea Composite DTMs from HOs and GEBCO as only sources

15. Data gathering – Greater North Sea Hydrographic Office CoverageVertical Datum Data typeSource GridMetadataRemark NorwayEconomic ZoneLATENC usage 4500 m x 500 mNoGridded ENC North SeaLATENC usage 2500 m x 500 mNoGridded ENC North Sea Underwater features N.A. DenmarkKattegat NorthLATDTM50 m x 50 mPartly Kattegat SouthLATDTM50 m x 50 mPartly North Sea (Economic Zone) LATDTM100 m x 100 mPartly GermanyNorth Sea (Economic Zone) MSpNWDTM70 m x 70 mNoMSpNW: Mean astronomical low water tide NetherlandsNorth Sea (Economic Zone) LATDTM100 m x 100 mYes BelgiumNorth Sea (Economic Zone) LATDTM400 m x 400 mNo

16. Challenges for the North Sea Getting more background information about the composite DTMs as provided by the Hydrographic Offices in a standard DTM metadata format and where possible compiling CDI metadata for bathymetric surveys associated with the composite DTMs. This process is ongoing but slow. For the UK waters there is a lot of survey data available, but getting access to these for use in the EMODNet Hydrography project is a complicated affair: The Maritime Coastguard Agency (MCA) performs hydrographic surveys under the "Civil Hydrography Programme (CHP)“ since 2004. The processing is done in partnership with the UKHO. SeaZone (as Metoc in 1995) began digitising paper copies of Admirality charts, or using third-party data acquired from private producers of digital navigational products, under licence from the UKHO. Wholly owned by UKHO from 2005, but last year taken over by HR Wallingford. So far we use the GEBCO 30 seconds grid for the UK waters!! Except for some NERC-NOC surveys.

17. Challenges: UK waters

18. Data gathering – Celtic Sea and Channel United Kingdom: Multibeam surveys collected for the Celtic Sea by the component bodies of the Natural Environment Research Council, United Kingdom Ireland: Multibeam surveys collected by the GSI for the Irish part of the Celtic Sea and Atlantic shelf, delivered as subDTM France: French side of the Channel: Multibeam survey collected by IFREMER; Surveys collected by SHOM, France. Netherlands: NIOZ multibeam surveys during scientific cruises made available to the project GEBCO 08 grid including OLEX data: covering areas where we have no surveys or DTM’s

19. Data gathering – Celtic Sea and Channel GSI surveys NERC-NOC surveys SHOM and IFREMER surveys NIOZ surveys

20. Data gathering – Iberian Coast and Bay of Biscay (Atlantic Ocean) France: Multibeam surveys collected by IFREMER; Surveys collected by SHOM, France. Spain: Surveys collected by IEO and multibeam surveys by UTM-CSIC Portugal: Surveys collected by IHPT and LNEG Italy: Surveys collected by CNR-ISMAR GEBCO grid: covering areas where we have no surveys or DTM’s

21. Data gathering – Iberian Coast and Bay of Biscay (Atlantic Ocean) IEO data IFREMER data CNR – ISMAR data IHPT data LNEG dataUTM-CSIC data SHOM data

22. Data gathering – Mediterranean Sea France: Multibeam surveys collected by IFREMER; Surveys collected by SHOM, France. Spain: Surveys collected by IEO Greece: Surveys collected by HCMR Italy: Surveys collected by CNR-ISMAR, OGS and OGS-RIMA GEBCO grid: covering areas where we have no surveys or DTM’s

23. Data gathering – Mediterranean Sea IEO data IFREMER data OGS-RIMA data CNR-ISMAR data OGS dataHCMR data SHOM data

24. Progress after 24 months Data gathered for the 6 maritime regions as surveys, composite DTM’s and if missing completed with GEBCO grid These have been compiled into multiple subDTM’s applying the QA/QC methodology. Also an intercalibration exercise has taken place between DTM responsible partners for harmonisation. Partners have made very good progress with preparing and submitting CDI metadata for the surveys they have compiled Gathering additional metadata for composite DTM’s of HO’s and making these available as factsheets is ongoing

25. Progress after 24 months Up till today, 7235 survey CDI metadata records from 13 data centres and 114 data originators have been collated and imported into a dedicated EMODnet Hydrography CDI data discovery and access service. This service was launched in May 2010 and has been upgraded over time with extra functionality The regional DTM’s have been imported into the central DTM, the GSHHS coastline and a sample collection of wrecks (North Sea) The dedicated EMODnet Hydrography products portal has been launched in May 2010. It sits atop of the central DTM database and interacts with the CDI service and with OGC WMS services The Hydrography portal has considerably been upgraded and relaunched in June 2011 in respons to feedback and comments received.

26. Portal www.emodnet-hydrography.eu

27. CDI Data Discovery and Access Service

28. CDI Shopping mechanism to request downloading Data Include in Basket Search Shopping list Submit + Authentication Request Confirmed Check Status In RSM Ready at DC x Download SDN format Results

29. Hydrographic Data Products viewing service Start page of the upgraded Data Products Viewing Service with GIS layers of digital bathymetry and other information

30. Hydrographic Data Products viewing service Pull down menu with GIS layers and options for viewing and requesting extra information

31. Hydrographic Data Products viewing service Retrieving parameters of an individual grid cell and retrieving CDI metadata of associated prevailing survey

32. Hydrographic Data Products viewing service Retrieving depth profile along a user defined transect

33. Hydrographic Data Products viewing service Depth standard deviation layer, also giving good insight in where surveys and composite DTMs (if provided with St Dev) have been used to cover the area.

34. Hydrographic Data Products viewing service CDI survey tracks and polygons layer, provided as OGC WMS service by the CDI service, and facility for polygon search with direct switch to the CDI service

35. Hydrographic Data Products viewing service Contours

36. Hydrographic Data Products viewing service Downloading DTM grid as tiles in various formats (for now CSV and Fledermaus SD formats; underway are ESRI ASCII, NetCDF (CF) and Geotiff)

37. Hydrographic Data Products viewing service Selected tile for downloading including extra information

38. Hydrographic Data Products viewing service 3D Visualisation of Fledermaus SD file with free Fledermaus viewer

39. Hydrographic Data Products viewing service Detailed zoom of digital bathymetry - examples Around Cyprus

40. Hydrographic Data Products viewing service Detailed zoom of digital bathymetry - examples Near Crete

41. Hydrographic Data Products viewing service Detailed zoom of digital bathymetry - examples Near Gulf of Cadiz

42. Hydrographic Data Products viewing service Detailed zoom of digital bathymetry - examples Dropping off the shelf

43. Hydrographic Data Products viewing service Celtic Sea – North Atlantic in 2 colour palettes

44. Quality – an example Bay of Biscay and Iberian coasts region Dropping off the shelf

45. Quality – an example Coverage by survey data and subDTMs

46. Quality – an example DTM qualification – number of soundings per grid cell

47. Quality – an example Standard deviation

48. Quality – comparison with GEBCO - example Gulf of Cadiz EMODnet bathymetry GEBCO bathymetry

49. Interoperability The Hydrography DTM WMS layers can be shared with other EMODnet portals and beyond (e.g. WISE-Marine, European Atlas of the Seas, SeaDataNet) Example: DTM WMS added to SeaDataNet CDI service

50. Compatibility with INSPIRE Discovery – Viewing – Download Services Viewers based upon OGC WMS standards CDI Metadata profile based upon ISO 19115 standards Downloadable data sets and data products are available in NetCDF (CF) format

51. User feedbacks: Statistics of web portal http://www.emodnet-hydrography.eu MonthUnique visitors Number of visits PagesHits Jan 2010 21 343251170 Feb 201030595561556 Mar 20107413010334068 Apr 20108716716337672 May 2010128269776829901 Jun 2010138266460516771 Jul 201013022122168596 Aug 2010144221240210419 Sep 2010161295286512743 Oct 2010181343466816147 Nov 2010214359346113380 Dec 2010202304277910666

52. User feedbacks: Statistics of web portal http://www.emodnet-hydrography.eu MonthUnique visitors Number of visits PagesHits Jan 2011 293 422550320644 Feb 2011305523713823349 Mar 20114287561006236132 Apr 2011343509492617939 May 2011369585751126912 TOTAL 20111738279535140124976 TOTAL 20101510266834311133089

53. User feedbacks: Statistics of Hydrographic Product Service MonthHitsPage ViewsVisitorsBandwidth (KB) Jul 20103102263458,547 Aug 201074543340558,282 Sep 20101,023186641,110,503 Oct 20102,738239953,474,035 Nov 20102,177297972,131,605 Dec 201041116880339,642 Jan 20111,253172701,578,902 Feb 20112,578242903,144,579 Mar 20114,7954501754,517,045 Apr 20112,5102681023,407,708 Total18,5402,68184720,320,853

54. User feedbacks: Statistics of Hydrographic Product Service BasinNo. of unique user Basin downloads All filesXYZ ascii filesFledermaus files Celtic Seas1238043 Greater North Sea1248143 Mediterranean734924 total320210110 BasinNo. of unique user tile downloads All filesXYZ ascii filesFledermaus files Celtic Seas312920471082 Greater North Sea23911570821 Mediterranean25721688884 total809253052787

55. Coming activities Preparing 1st year report for Seabed Mapping contract and final report for Hydrography contract Gather more data sets (surveys and composite DTMs) Continue with trying to get hold of surveys for composite DTMs of HO’s Continue efforts toward UK data Produce upgraded release of the new DTMs in coming months Implement metadata retrieval for used composite DTMs Finalise the 2 nd release of the Product Portal with additional functions: Layer with sources references Additional output formats (ESRI ASCII and NetCDF (CF)) Start of wider promotional campaign to public and private organisations using various web publications, journals and conferences Gaining momentum in task to gain insight in geographical coverage of European seas by multibeam surveys and gaps analysis

56. www.emodnet-hydrography.eu