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The new Digital Terrain Model (DTM) of the Brazilian Continental Margin: detailed morphology and revised undersea feature names

The Digital Terrain Model was developed based on all available bathymetric data, already processed and validated. The SRTM30_PLUS (Shuttle Radar Topography Mission) data were used just to complement the bathymetric grid in distal regions of the Brazilian Continental Margin.

In order to prepare the bathymetric grid from a database composed by all qualified bathymetric information, it was adopted the Randgrid.GX/Geosoft - Oasis Montaj®, version 9.5.2, routine.

The used mathematical model creates a surface of minimum curvature, using a similar method to that proposed by Swain (1976) and Briggs (1974), with the interpolation, in each knot of the grid, of X and Y values in metric coordinates and Z values (variable). The calculated surface adjusts itself to the irregularly sampled original values. The grid cell-size was 1,000 m, defined according the spatial distribution of the available data.

The Brazilian DTM Oasis grid file was converted to surfer files, Versions V6 and V7. The ASCII file and a Geotif image were also provided.

The reference system and geodetic datum adopted for the bathymetric data was the WGS84.

The projection adopted was the World Mercator (false N=0, false E=0, latitude of the natural origin=0 longitude of the natural origin=0, and the scaling factor of the natural origin=1).

 
Citation proposal
A. A. L. Alberoni () - I. K. Jeck () - C. G. Silva () - L. C. Torres () (2019) . The new Digital Terrain Model (DTM) of the Brazilian Continental Margin: detailed morphology and revised undersea feature names. https://services.mspdata.eu:/geonetwork/srv/api/records/8797a901-b492-41c0-9551-e3b291dd3220

Simple

Date ( Publication )
2019-11-26
Identifier
8797a901-b492-41c0-9551-e3b291dd3220
Status
Completed

  Principal investigator

Diretoria de Hidrografia e Navegação (DHN) -  
Rua Barão de Jaceguai, s/n° - Ponta da Armação - Niterói Rio de Janeiro Brazil

Website
https://www.marinha.mil.br/dhn/  

  Author

- A. A. L. Alberoni  

  Author

- I. K. Jeck  

  Author

- C. G. Silva  

  Author

- L. C. Torres  

Thèmes Sextant ( Theme )
GEMET - INSPIRE themes, version 1.0 ( Theme )
Mission Atlantic - Resources ( Theme )
  • Data
Mission Atlantic - Case Studies ( Theme )
  • South Brazilian Shelf
Mission Atlantic - BODC Parameters ( Theme )
  • /Marine geology/Gravity, magnetics and bathymetry
Mission Atlantic - Data type (DMP) ( Theme )
  • Spatial data products
Use constraints
Copyright
Spatial representation type
Grid
Distance
1000  meter
Metadata language
English
Character set
UTF8
Topic category
  • Oceans
N
S
E
W


Reference system identifier
EPSG / WGS 84 / World Mercator (EPSG:3395) / 7.4
Geometric object type
Surface
OnLine resource
Fisiografia da margem brasileira  
OnLine resource
Fisiografia da margem brasileira - Modelo Digital do Terreno - Surfer v6  
OnLine resource
Fisiografia da margem brasileira - Modelo Digital do Terreno - Surfer v7  
OnLine resource
Fisiografia da margem brasileira - Modelo Digital do Terreno - XYZ  
OnLine resource
The new Digital Terrain Model (DTM) of the Brazilian Continental Margin: detailed morphology and revised undersea feature names  
Hierarchy level
Dataset

Metadata

File identifier
8797a901-b492-41c0-9551-e3b291dd3220   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2021-12-08T13:44:52
Metadata standard name
ISO 19115:2003/19139 - SEXTANT
Metadata standard version
1.0

  Publisher

Ifremer - Sextant  
Plouzane Brittany 29280 France

Website
https://sextant.ifremer.fr/eng  
 
 

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