Title

Bathymetry - Saint-Paul and Amsterdam Islands (Data compilation, 2023)

Date (Creation)

2019-08-19

Date (Revision)

2023-11-24

Citation identifier

FR-330715-368-00032-Synthese_StPaulAmsterdam_1_16_BATHY

Citation identifier

DOI:10.12770/342b2892-b0de-4566-bd77-520fb3bf4eaa

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
Ifremer	Géosciences Marines	gmcarto@ifremer.fr	Local service desk

Presentation form

Digital model

Abstract

Bathymetry around Saint-Paul and Amsterdam Islands, with a grid resolution of 1/16 arcminute (3.75 arcseconde), updated in 2023. The Digital Terrain Model is the result of data compilation of several multibeam surveys.

The DTM was processed as part of the French national program (EXTRAPLAC) for the delineation of the outer limit of the continental shelf beyond 200 nautical miles, and in collaboration between Ifremer and the Western Brittany University (UBO Brest). The DTM is updated according to new bathymetric data acquired in this area.

Surveys reference :

- MD157/ PLURIEL: 2006, R/V Marion Dufresne, https://doi.org/10.17600/6200130

- BOOMRANG-Leg6: 1996, R/V Melville, https://calisphere.org/item/ark:/20775/bb9424302r/

The datasets from the following cruises have been also integrated:

- MD240/ OHA-SIS-BIO - OBSAUSTRAL: 2023, R/V Marion Dufresne, https://doi.org/10.17600/18002425

- MD238/ OHA-SIS-BIO : 2022, R/V Marion Dufresne, https://doi.org/10.17600/18002903

- MD171/ GEISEIR1: 2009, R/V Marion Dufresne, https://doi.org/10.17600/9200050

- MD120/ ANTAUS: 2000, R/V Marion Dufresne, https://doi.org/10.17600/200090

- MD118/ DEFLO: 2000, R/V Marion Dufresne, https://doi.org/10.17600/200070

- MD106/ IPHIS: 1997, R/V Marion Dufresne,https://doi.org/10.17600/97200010

- HYDROAMSTERDAM: 1984, R/V Jean Charcot, https://doi.org/10.17600/84000111

- MD197/ MYCTO: 2014, R/V Marion Dufresne, https://doi.org/10.17600/14002500

- MD211/ OBSAUSTRAL: 2018, R/V Marion Dufresne, https://doi.org/10.17600/18000490

- MD217/ OBSAUSTRAL: 2019, R/V Marion Dufresne,https://doi.org/10.17600/18000885

- VT51/ OISO6 : 2001, R/V Marion Dufresne, https://doi.org/10.17600/1200010

- MD106, MD174, MD175/GEISEIR-2, MD189/INDIEN SUD 2, MD201/OBSAUSTRAL, MD224/OBSAUSTRAL-1

- TN362 (Coring to Reconstruct Ocean Circulation and Carbon-dioxide Across 2 Seas: CROCCA-2s), R/V Thomas G. Thompson, 2018. 10.7284/908704

- NBP0406: 2004, R/V Nathaniel B. Palmer, DOI 10.7284/905502

Credit

Ifremer

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Ifremer	Ifremer Marine Geosciences	gmcarto@ifremer.fr	Author
Ifremer	LOUBRIEU Benoît	benoit.loubrieu@ifremer.fr	Author
CNRS / UBO	ROYER Jean-Yves	jean-yves.royer@univ-brest.fr	Author
CNRS / UBO	MAIA Marcia	marcia.maia@univ-brest.fr	Author
Ifremer	Ifremer	sismer@ifremer.fr	Publisher

Maintenance and update frequency

As needed

Discipline

• Bathymetry

Place

• St-Paul

• Amsterdam

GEMET - INSPIRE themes, version 1.0

• Elevation

GEMET

• Seabed mapping

• Geo-morphology

Thèmes Sextant

• /Physical Environment/Bathymetry/Digital Terrain Model

Thématiques - SIMM

• /Environmental Status/Bathymetry

Sous-regions marines

• /Overseas France/Indian Ocean

Thématiques - SIMM

• Research

Use limitation

CC BY. Licence Creative Commons Attribution 4.0 International

Access constraints

Other restrictions

Use constraints

License

Other legal constraints

Open access

Use limitation

Ne pas utiliser pour la navigation

Spatial representation type

Grid

Distance

3.75  Arc second

Denominator

200000

Language

Français

Character set

UTF8

Topic category

• Elevation

Environment description

Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595

Begin date

1984-02-24

End date

2023-03-01

Reference system identifier

EPSG / WGS 84 (EPSG:4326) / 7.4

Number of dimensions

2

Dimension name

Column

Dimension size

14400

Dimension name

Row

Dimension size

11680

Cell geometry

Area

Transformation parameter availability

Checkpoint Availability

Point in Pixel

• Center

Distribution format

Name	Version
Geotiff

OnLine resource

Protocol	Linkage	Name
WWW:LINK	https://www.extraplac.fr/	https://www.extraplac.fr/
WWW:LINK-1.0-http--metadata-URL	https://doi.org/10.12770/342b2892-b0de-4566-bd77-520fb3bf4eaa	DOI du jeu de donnée

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://sextant.ifremer.fr/services/wms/gm_bathy	Synthese_StPaulAmsterdam_1_16_BATHY
COPYFILE		Synthese_StPaulAmsterdam_1_16_BATHY

Hierarchy level

Dataset

Statement

The DTM is a result of collaboration between the Ifremer Marine Geosciences unit and the scientific group of the Pluriel cruise (Brest University).

Multibeam data were controlled and processed with Ifremer software (Caraïbes and Globe).

A similar processing chain is applied to each dataset:

- Selection of relevant profiles for acoustic coverage of the study area

- Automatic and manual filtering of outliers and erroneous data

- Control of overlapping zones

- Production of a digital terrain model. Depth layer is calculated as the average of soundings in each pixel.

All DTMs are merged into a unique DTM for the area. Grid resolution is 150 m.

Attribute description

Profondeur

Content type

Image

Descriptor

Band_1

Maximum value

-43.799999

Minimum value

-5280.200195

Bits per value

32

Triangulation indicator

Radiometric calibration data availability

Camera calibration information availability

Film distortion information availability

Lens distortion information availability

Metadata

File identifier

342b2892-b0de-4566-bd77-520fb3bf4eaa

Metadata language

Français

Other language

Language	Character encoding
English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2025-01-28T09:03:02.341112Z

Metadata standard name

ISO 19115:2003/19139 - SEXTANT

Metadata standard version

V. 1.2

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Ifremer	Géosciences Marines	gmcarto@ifremer.fr	Local service desk