Title

Geomophologic features (fractures, canyons, seamounts) on the North Atlantic

Date (Publication)

2019-08-14

Citation identifier

FR-330-715-368-00032-IFR_MARBEC_ATLAS_Geomorpho

Citation identifier

DOI:10.12770/66c5957b-6cb5-4fce-9ca5-1cb609fa39b5

Abstract

Distribution of three geomorphologic features (fracture zones, canyons, and seamounts) on the North Atlantic (18°N to 76°N and 36°E to 98°W). Source vector data originated from the GEBCO Gazetteer of Undersea Features Names for fractures, Harris & Whiteway (2011) for canyons, and Yesson et al. (2011) for seamounts. The presence (value=1) of fracture zones or seamounts and the total length of canyons (in km, independently for shelf-incising or blind canyons) was extracted in 25km * 25km gridsquares.

This dataset was built to feed a basin-wide spatial conservation planning exercise, targeting the deep sea of the North Atlantic. The goal of this approach was to identify conservation priority areas for Vulnerable Marine Ecosystems (VMEs) and deep fish species, based on the distribution of species and habitats, human activities and current spatial management.

Credit

Horizon 2020 ATLAS project (EU)

Point of contact

Organisation name	Individual name	Electronic mail address	Role
IFREMER	Combes Magali	magali.combes@ifremer.fr	Author
IFREMER	Vaz Sandrine	Sandrine.Vaz@ifremer.fr	Author
IFREMER		sismer@ifremer.fr	Publisher

Thèmes Sextant

• /Physical Environment/Geology/Geomorphology

GEMET - INSPIRE themes, version 1.0

• Geology

Use limitation

CC-BY-NC-SA (Creative Commons - Attribution, Pas d’utilisation commerciale, Partage dans les mêmes conditions)

Access constraints

License

Use constraints

License

Spatial representation type

Grid

Distance

25  km

Language

English

Character set

UTF8

Topic category

• Oceans
• Environment

Reference system identifier

+proj=aea +lat_1=43 +lat_2=62 +lat_0=30 +lon_0=-30 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs +ellps=WGS84 +towgs84=0,0,0

Number of dimensions

2

Dimension name

Row

Dimension size

273

Resolution

25  km

Dimension name

Column

Dimension size

491

Resolution

25  km

Cell geometry

Area

Transformation parameter availability

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://sextant.ifremer.fr/services/wms/atlas_eu	IFR_MARBEC_ATLAS_BLIND_CANYONS_NORTHATL
COPYFILE		IFR_MARBEC_ATLAS_BLIND_CANYONS_NORTHATL
WWW:LINK	https://doi.org/10.1016/j.dsr.2011.02.004	Yesson, C., Clark, M. R., Taylor, M. L., & Rogers, A. D. (2011). The global distribution of seamounts based on 30 arc seconds bathymetry data. Deep Sea Research Part I: Oceanographic Research Papers, 58(4), 442–453. https://doi.org/10/d8g2c6
WWW:LINK	https://doi.org/10.1016/j.margeo.2011.05.008	Harris, P. T., & Whiteway, T. (2011). Global distribution of large submarine canyons: Geomorphic differences between active and passive continental margins. Marine Geology, 285(1–4), 69–86. https://doi.org/10/bjnm2f
WWW:LINK	https://www.gebco.net/	IHO-IOC (2019) GEBCO Gazetteer of Undersea Feature Names, www.gebco.net

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://sextant.ifremer.fr/services/wms/atlas_eu	IFR_MARBEC_ATLAS_SHELF_INCISING_CANYONS_NORTHATL
COPYFILE		IFR_MARBEC_ATLAS_SHELF_INCISING_CANYONS_NORTHATL

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://sextant.ifremer.fr/services/wms/atlas_eu	IFR_MARBEC_ATLAS_FRACTURES_CANYONS_NORTHATL
COPYFILE		IFR_MARBEC_ATLAS_FRACTURES_CANYONS_NORTHATL

OnLine resource

Protocol	Linkage	Name
OGC:WMS	https://sextant.ifremer.fr/services/wms/atlas_eu	IFR_MARBEC_ATLAS_SEAMOUNTS_NORTHATL
COPYFILE		IFR_MARBEC_ATLAS_SEAMOUNTS_NORTHATL

OnLine resource

Protocol	Linkage	Name
DOI	https://doi.org/10.12770/66c5957b-6cb5-4fce-9ca5-1cb609fa39b5	DOI of the dataset

Hierarchy level

Dataset

Statement

Source vector data originated from the GEBCO Gazetteer of Undersea Features Names for fractures (IHO-IOC 2019), Harris & Whiteway (2011) for canyons, and Yesson et al. (2011) for seamounts. The data was extracted in 25km * 25 km gridsquares of the raster grid used for the ATLAS spatial prioritization. Source data reference: Harris, P. T., & Whiteway, T. (2011). Global distribution of large submarine canyons: Geomorphic differences between active and passive continental margins. Marine Geology, 285(1–4), 69–86. https://doi.org/10/bjnm2f ; IHO-IOC (2019) GEBCO Gazetteer of Undersea Feature Names, www.gebco.net ; Yesson, C., Clark, M. R., Taylor, M. L., & Rogers, A. D. (2011). The global distribution of seamounts based on 30 arc seconds bathymetry data. Deep Sea Research Part I: Oceanographic Research Papers, 58(4), 442–453. https://doi.org/10/d8g2c6 ;

Description

Source vector data originated from the GEBCO Gazetteer of Undersea Features Names (www.gebco.net) for fractures, Harris & Whiteway (2011) for canyons ( https://doi.org/10/bjnm2f), and Yesson et al. (2011) for seamounts (https://doi.org/10/d8g2c6). Fractures and canyons data consisted in spatial lines, and seamounts in spatial points. The canyons dataset gathered three types of canyons: shelf-incising canyons having heads with a clear bathymetric connection to a major river system; shelf-incising canyons with no clear bathymetric connection to a major river system; and blind canyons incised onto the continental slope. The two types of shelf-incising canyons were pooled together.

Rationale

initial datasets sources and filtering

Description

Using the R environment, the rasterize function was used to extract the presence (fractures and seamounts) and the total length of canyons (in km), for shelf-incising canyons and for blind canyons, in 25km *25km gridsquares. Values of output raster cells where no fracture, seamounts or canyons were present were set to 0, while values of cells out of the study zone were set to NA.

Rationale

extraction of features distribution on the ATLAS grid

Metadata

File identifier

66c5957b-6cb5-4fce-9ca5-1cb609fa39b5

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2025-01-28T08:45:35.128847Z

Metadata standard name

ISO 19115:2003/19139 - SEXTANT

Metadata standard version

1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
IFREMER	Vaz Sandrine	Sandrine.Vaz@ifremer.fr	Author
IFREMER	Combes Magali	magali.combes@ifremer.fr	Author