Satellite Derived Bathymetry Denmark EEZ

Data provides Satellite-Derived Bathymetry (SDB) data for shallow waters. The analysis is based on EOMAP’s WATCOR-X SDB software and Sentinel-2 data. The native spatial resolution of the data is 10m.


Supplemental_Information:


EOMAPs Satellite Derived Bathymetry (SDB) method relies on the reflected light energy which is measured at the satellite sensor in space. To calculate water depth, the sea bottom reflection must be separated from all other simultaneously measured portions of light. Other contributors of light scattered to the sensor are atmospheric molecules and aerosols, adjacent scattering from land, the water surface reflection, and light scattered and absorbed due to particular properties of water constituents and the pure water itself. The pure water itself also absorbs light in a spectrally specific manner and therefore leaves unique signatures in the signal while the light passes through the water column and returns after reflection at the sea bottom. This property is relevant to estimate water depth from optical satellite imagery. As many properties can vary over space and time, effective correction, regularization and retrieval algorithms must be applied to avoid instable results. Furthermore, multi-record analytics are part of the process and reduce noise and increase overall vertical accuracies. EOMAP developed and maintains these unique algorithms and its workflows for almost 2 decades and has developed the Watcor-X SDB software. The maximum depth the system is able to sense is related to the complex interaction of radiance of bottom material, incident sun angle and intensity, and the type and quantity of organics or sediments in the water column. As a rule-of-thumb, SDB can measure depths down to one to one point five times the Secchi Disc Depth. The SDB data are compared against Satellite-Lidar Bathymetry (SLB) tracks which have been derived out of the IceSat-2 Atlas instrument and are stored and distributed via EOMAP’s SLB database.


No-data-value optically deep water: -9999

 
Citation proposal
EOMAP GmbH & Co KG. Satellite Derived Bathymetry Denmark EEZ. https://services.mspdata.eu:/geonetwork/srv/api/records/SDN_CPRD_4667_denmark2024

Simple

Alternate title
Date ( Creation )
2024-02-29
Date ( Revision )
2024-02-09
Identifier

denmark2024

  Originator

Website
web site  

  Custodian

Website
web site  
Parameter Discovery Vocabulary (P02) ( parameter )

  • Bathymetry and Elevation

SeaDataNet device categories ( Theme )

  • cameras

Positioning devices ( Theme )
SeaDataNet depth measurement reference planes ( Theme )

  • mean sea level

Project name ( Theme )

  • EMODNet Bathymetry

Thèmes Sextant ( Theme )

  • /Physical Environment/Bathymetry/Digital Terrain Model

Use limitation

see EOMAP EULA: EOMAP_Product_EULA2014Oct19.pdf

Access constraints
by negotiation
Use constraints
Copyright
Use limitation

surveying, hydrodynamic modelling, pre-planning, coastal zone management

Spatial representation type
Grid
Denominator
10000
Distance
10  meter
Metadata language
English
Character set
UTF8
Topic category
  • Oceans

Vertical extent

Minimum value
0
Maximum value
-15
Description

Denmark EEZ

N
S
E
W


Reference system identifier

EPSG

/

WGS 84 (EPSG:4326)

/

8.6

Reference system identifier

EPSG

/

WGS 84 (EPSG:4326)

/

7.4

Number of dimensions
3
Dimension name
Column
Dimension size
48103
Dimension name
Row
Dimension size
47245
Dimension name
Time
Dimension size
1
Cell geometry
Point
Transformation parameter availability
false
Checkpoint Availability
false
Point in Pixel
  • Center
Distribution format

  • GeoTIFF

    (

    1.0

    )

  • KML

    ()

  • XYZ Ascii

    ()

  • ESRI Shapefile

    (

    1.0

    )

Distributor

No information provided.
Transfer size
20
Hierarchy level
Dataset

Conformance result

Date
Explanation

No shoal bias

Pass
false

Quantitative attribute accuracy

Name of measure

depth

Measure identification

depth accuracy

Measure description

The SDB data are compared against Satellite-Lidar Bathymetry (SLB) tracks which have been derived out of the IceSat-2 Atlas instrument and are stored and distributed via EOMAP’s SLB database. All files meet CAT ZOC C Category or better.

Evaluation method description

LE90

Quantitative result

Value
not defined

Gridded data positional accuracy

Name of measure

horizontal accuracy

Measure identification

horizontal accuracy of coordinate

Measure description

Based on global ground control points. Evaluation done by ESA.

Evaluation method description

CE90

Quantitative result

Value type
horizontal accuracy
Value
10m

Absolute external positional accuracy

Name of measure

emodnet-bathymetry.QI.Horizontal

Value
3 - < 20 m

Absolute external positional accuracy

Name of measure

emodnet-bathymetry.QI.Vertical

Value
1 - SBES low frequency, SDB (similar than 2+5%d)

Domain consistency

Name of measure

emodnet-bathymetry.QI.Purpose

Value
2 - Bathymetric/morphologic survey
Hierarchy level
Software
Description
Other

software

Hierarchy level
Property type
Description

parameters of data processing

Statement

Data were processed by Watcor-X SDB software, by EOMAP GmbH Co.KG.


Watcor-X SDB software is designed for the physically based assessment of hydro-biological parameters from multi- and hyperspectral remote sensing data to quantify water depth. This allows to access bathymetric data, even in the absence of any local survey data..


Correction modules applied:


Corrected for Satellite sensor noise: Yes

Corrected for atmospheric effects: Yes

Corrected for the effect of adjacent land reflectance: Yes

Corrected for effects of turbidity: Yes

Corrected for water refraction effect: No

Ground-control points accessed to improve horizontal accuracy: No

Local in-situ data accessed for calibration and validation purposes: Comparison with IceSat-2 Atlas derived Satellite-Lidar Bathymetric data.

Description of in-situ data used: None

Corrected for tidal influence: Yes (using predicted tidal station(s))

Metadata

File identifier
SDN_CPRD_4667_denmark2024   XML
Metadata language
English
Character set
UTF8
Hierarchy level name

Composite Product Record

Date stamp
2024-03-14T13:23:57.672Z
Metadata standard name

ISO 19115:2003/19139 - EMODNET - BATHYMETRY

Metadata standard version

1.0

  Author

Website
web site  
 
 

  Overviews


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Associated resources

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