Metadata details

File identifier

SDN_CPRD_4667_greece1001

Catalogue type

Composite Product Record

Project name

• EMODNet Bathymetry

Dissemination level

public

Metadata language

English

Date stamp

2019-12-18T10:16:47

 

Parameter Discovery Vocabulary (P02)

• Bathymetry and Elevation

SeaDataNet device categories

• cameras

 

Geometry

Spatial representation type

Grid

Number of columns

18965

Number of lines

7441

Pixel size

15    

Maximum scale of use

10000

 

Abstract

Dataset description abstract

Data provides bathymetric information based on Landsat 8 satellite at 15 m resolution.

Data were processed by the Modular and Inversion System (MIP) by EOMAP GmbH Co.KG. MIP is designed for the physically based assessment of hydro-biological parameters from multi- and hyperspectral remote sensing data.

Supplemental_Information:

EOMAPs Satellite Derived Bathymetry (SDB) method relies on the reflected light energy which is measured at the satellite sensor in space. In order to measure the water column thickness, 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. EOMAP developed and maintains these unique algorithm and its workflows for almost 2 decades. 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, satellite derived bathymetry should be capable of sensing bottom to depths equal to one to one point five times the Secchi depth.

no-data-value optically deep water: -9999

Description of data processing

Data were processed by the Modular and Inversion System (MIP) by EOMAP GmbH Co.KG.

MIP is designed for the physically based assessment of hydro-biological parameters from multi- and hyperspectral remote sensing 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: No

Description of in-situ data used: None

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

 

Transfer size (in MB)

20

 

Intellectual property

Use limitation

see EOMAP EULA: EOMAP_Product_EULA2014Oct19.pdf

Access constraints

by negotiation

Use constraints

Copyright