Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon, below130 m depth

Bottom hydrodynamic variables (Temperature, Salinity, Current velocitiy) were derived from the near-seafloor hydrodynamic dataset modeled using SYMPHONIE (https://www.seanoe.org/data/00943/105472/). Extreme percentiles (1%, 99%) of bottom temperature and salinity, as well as (95%, 99%) of bottom currents were interpolated to produce rasters 5-m resolution. Additionally, salinity and temperature amplitude rasters (Ampli-T ; Ampli-S) were created by subtracting T01 from T99 and S01 from S99. The dataset is composed of eight rasters.

Only data below 130 m depth were retained, focused on the Lacaze-Duthiers Canyon.

This dataset was produced to assess the probable distribution of habitats (habitat suitability modeling) for cold-water corals in the Lacaze-Duthiers Canyon at different resolutions as part of the European H2020 project REDRESS (Restoration of Deep-Sea Habitats to Rebuild European Seas, https://redress-project.eu/, Grant Agreement No. 101135492).

SYMPHONIE is a component of the national service SIROCCO (research infrastructure ILICO).

This dataset is related to the article "Mapping and Conservation of Cold-Water Corals in the Lacaze-Duthiers Canyon for Transboundary Management", submitted to Mediterranean Marine Science by Fabri et al. in 2025.

 
Citation proposal
Fabri Marie-Claire (IFREMER) - Estournel Claude (CNRS/UPS/CNES/IRD (LEGOS)) (2025) . Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon, below130 m depth. IFREMER https://services.mspdata.eu:/geonetwork/srv/api/records/f425108e-1b7d-4a3c-aae2-7942d42b56ca

Simple

Date ( Creation )
2024-02-14
Date ( Publication )
2025-03-24
Identifier
LD_HydroD_variables_5m_under130m
Credit
Ifremer, Univ. Toulouse 3 (LEGOS)

  Author

  Author

  Publisher

Thèmes Sextant ( Theme )
  • /Physical Environment/Hydrodynamics
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Hydrography
Access constraints
Copyright
Use constraints
Copyright
Other constraints
Cite the CALADU_2021 oceanograpic cruise (https://doi.org/10.17600/18001575)
Association Type
Cross reference
Association Type
Cross reference
Association Type
Cross reference
Association Type
Cross reference
Association Type
Cross reference
Initiative Type
Platform
Spatial representation type
grid Grid
Distance
10  meter
Metadata language
English
Character set
utf8 UTF8
Topic category
  • Oceans
  • Environment
N
S
E
W


Number of dimensions
0
Cell geometry
Area
Transformation parameter availability
false
Distribution format
  • ( )

OnLine resource
Digital Object Identifier (DOI)  
OnLine resource
lacaze_hydrodynamic_5m_S01_CUT  

Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon - 1% of bottom salinity

OnLine resource
lacaze_hydrodynamic_5m_T01_CUT  

Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon - 1% of bottom temperature

OnLine resource
lacaze_hydrodynamic_5m_UV95_CUT  

Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon - 95% of bottom currents

OnLine resource
lacaze_hydrodynamic_5m_UV99_CUT  

Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon - 99% of bottom currents

OnLine resource
lacaze_hydrodynamic_5m_S99_CUT  

Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon - 99% of bottom salinity

OnLine resource
lacaze_hydrodynamic_5m_T99_CUT  

Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon - 99% of bottom temperature

OnLine resource
lacaze_hydrodynamic_5m_AmplS99-01_CUT  

Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon - salinity amplitude (Ampli-S) created by subtracting S01 from S99

OnLine resource
lacaze_hydrodynamic_5m_AmplT99-01_CUT  

Hydrodynamic variables at 5-m resolution in the Lacaze-Duthiers Canyon - temperature amplitude (Ampli-T) created by subtracting T01 from T99

Protocol
COPYFILE
Name
Hydrodynamic_variables
Description
Hydrodynamic variables at 5-m resolution
Function
Download
Hierarchy level
Dataset

Domain consistency

Conformance result

Date ( Publication )
2010-12-08
Explanation
See the referenced specification
Statement

Bottom environemenal variables were modeled using SYMPHONIE on a numerical domain covering 65 × 60 km at a resolution of 80 m (https://www.seanoe.org/data/00943/105472/). The 10-m bathymetry used inside the Lacaze-Duthiers Canyon was collected during the CALADU_2021 cruise (https://doi.org/10.17600/18001575). Statistics of extreme values were derived from hourly fields simulated between November 1, 2012, and April 15, 2014. This period includes two contrasting winters: the winter of 2012–2013, which was cold with dense water cascading, and the winter of 2013–2014, which was warm.

These ydrodynamic variables were provided as point files with a regular spacing of 80 m for each of the six variables (T01, T99, S01, S99, UV95, UV99). Datasets were interpolated at 5-m resolution. The natural neighbor interpolation method was applied, ensuring that no new values were created outside the range of existing data. Additionally, salinity and temperature amplitude rasters (Ampli-T ; Ampli-S) were created by subtracting T01 from T99 and S01 from S99.

Only data under 130m were retained to assess the probable distribution of habitats (habitat suitability modeling) for cold-water corals in the Lacaze-Duthiers Canyon.

Source

Metadata

File identifier
f425108e-1b7d-4a3c-aae2-7942d42b56ca   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2025-05-16T12:49:37.14753Z
Metadata standard name
ISO 19115-3 - SEXTANT
Metadata standard version
1.0

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