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EMODnet High Resolution Seabed Mapping -further developing and providing a high resolution digital bathymetry for European seas
EGU Fall 2017 meeting – New Orleans – USA, December 2017
Schaap Dick MARIS,
Initiative by EU DG MARE for EMODnet in 2008:
EU communication “MARINE KNOWLEDGE 2020 - marine data and observation for smart and sustainable growth” promotes ‘capture data once – use many times’
The EU Blue Growth communication considers ocean and marine data as important input for driving scientific and economic developments
Focus on generic European marine data products for different domains: bathymetry, geology, biology, chemistry, physics, seabed habitats, coastal mapping, and human activities
Use of standards is of vital importance
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European Marine Observation and
Data network
Central portal
Thematic portals for
physics, biology,
geology, bathymetry,
chemistry, seabed
habitas and human
activities
Checkpoints for
analysing fitness for
purpose
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European Marine Observation and
Data network
To bring together bathymetric surveys of European seas and to produce, publish and serve a harmonised and medium resolution Digital Terrain Model of all European seas
providing harmonized discovery and access to bathymetry data
publishing a multi-resolution Digital Terrain Model of the seabedtopography
publishing a standard European coastline and baseline data
maintaining the EMODnet Bathymetry web portal allowing easyaccess of the data and data products
supporting interoperability (INSPIRE) and with organisations fromoutside EU
providing user and machine-to-machine services
Ongoing in 4 consecutive projects since 2009 with expanding consortium
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EMODnet High Resolution Seabed
Mapping - Objectives
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Present Consortium
Adoption of SeaDataNet standards and infrastructure
Common Data Index (CDI) service based upon ISO 19115 – 19139 metadata standard for bathymetric data sets (surveys)
Sextant products catalogue based upon ISO 19115 – 19139 for composite DTMs
Controlled vocabularies for the marine domain (> 160.000 terms and > 60 lists), with international governance and web services
Common SeaDataNet Data Policy and SeaDataNet License
Adoption of OGC WMS, WFS, and WCS services for machine-to-machine services
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Standards are instrumental
Population of SeaDataNetCDI and Sextant services
Common method and GLOBE software used by all involved
Data pre-gridded by data providers
Regional Basin Coordinators generate Regional DTMs
DTM Integrator compiles the resulting EMODnet DTM
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Process flow
Norwegian and Icelandic seas – Arctic – example 8
GLOBE software
Average depth for the interpolated DTM (using survey data & CDTM’s)
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Regional DTM production - example
Atlantic near Iberian peninsula
Resulting DTM with average depth after GEBCO integration and smoothing
Up till today, 25087 survey CDI metadata records from 38 data centresfrom 18 countries and 240 data originators from 1816 to 2017 have been collated and imported into the dedicated EMODnet Bathymetry CDI data discovery and access service.
The SeaDataNet Data Products Catalogue service (Sextant) gives 114metadata records about composite DTMs
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Data gathering results
May 2010: first release of EMODnet DTM for selected European seas - 1/4 * 1/4
arc minutes
June 2011: second release of EMODnet DTM for more European seas - 1/4 * 1/4
arc minutes
August 2012: third release of EMODnet DTM for more European seas - 1/4 * 1/4
arc minutes
August 2013: fourth release of EMODnet DTM - 1/4 * 1/4 arc minutes
February 2015: fifth release of EMODnet DTM now covering all European seas -
1/8 * 1/8 arc minutes
September 2015: sixth release of EMODnet DTM now covering all European seas
- 1/8 * 1/8 arc minutes + 3 pilot coastal areas with high resolution DTMs
October 2016: seventh release of EMODnet DTM based upon > 7700 surveys and
Composite DTMs
Mid 2018 (planned): eight release of EMODnet DTM with 1/16 * 1/16 arc minutes,
including coastal zones, and parts with higher resolution where possible
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DTM releases in time
http://www.emodnet-bathymetry.eu 12
Bathymetry Viewing and Download
service with current EMODnet DTM
http://www.emodnet-bathymetry.eu 13
Other legend and layer menu
http://www.emodnet-bathymetry.eu 14
CDI layer with survey tracks / areas
http://www.emodnet-bathymetry.eu 15
CDI layer with retrieving details
http://www.emodnet-bathymetry.eu 16
Source references layer with
interaction to metadata
http://www.emodnet-bathymetry.eu 17
Download of DTM tiles in various
formats
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DTM – 3D viewer
DTM loaded into 3D-Viewer, based upon NASA World Wind
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DTM – 3D viewer
Fledermaus viewer
CDI Data Discovery and Access service: WMS and WFS service
http://geoservice.maris2.nl/wms/seadatanet/emodnet_hydrography
GetCapabilities:
http://geoservice.maris2.nl/wms/seadatanet/emodnet_hydrography?servic
e=WMS&request=GetCapabilities
DTM OGC Web services:
WMS: http://ows.emodnet-bathymetry.eu/wms
WFS: http://ows.emodnet-bathymetry.eu/wfs
WMTS: http://ows.emodnet-bathymetry.eu/wmts
WCS: http://ows.emodnet-bathymetry.eu/wcs
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EMODnet HRSM web services
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Atlantic Ocean Research Alliance
(AORA) – cooperation with NOAA
Gathering and populating more data sets
Expanding North to include the Barents Sea and synergy with IBCAO
Expanding DTM including coastal areas
Increasing overall resolution to 1/16 * 1/16 arc minutes and in coastal zones
DTMs with higher resolution (where possible)
Including alternative data sources (Satellite Derived Bathymetry)
Determining best European coastline, also using European tidal model for
vertical referencing
Introducing 3D viewing in the browser, using Cesium and own TIN model
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Ongoing activities
At different tidal levels – using the Deltares Global Tide Surge Model
(GTSM) version 2 (Coastal areas (5 km resolution); Open oceans (50
km resolution)); grid refinement for capturing better the topography in
coastal waters: 1.25km at European coasts and 2.5km at other coasts.
Recalibration is ongoing.
Using coastal data from multibeam, lidar and satellite (Sentinel and
LandSat)
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Determing European coastline
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European coastline
Wadden Sea area as test case for refining and testing the methodology
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Satellite Derived Bathymetry
Satellite Derived Bathymetric Grid, Iraklion – Crete, Greece (1/32 * 1/32)
Current EMODnet DTM (1/8*1/8 arc minutes)
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New look&feel for portal
http://www.emodnet-bathymetry.eu
www.emodnet.eu
