Gridded geophysical shipboard data on the South Intra-Transform segment of the St. Paul transform system (COLMEIA cruise)

Date 2023
Temporal extent 2013-01-23 -2013-02-28
Author(s) Maia MarciaORCID1, Vincent Clément2, Briais Anne1, Ligi Marco3
Affiliation(s) 1 : CNRS, Laboratoire Geo-Ocean UMR 6538 CNRS-IFREMER-UBO-UBS, F-29280, Plouzané, France
2 : Univ. Bretagne Occidentale, Laboratoire Geo-Ocean UMR 6538 CNRS-IFREMER-UBO-UBS, F-29280, Plouzané, France
3 : CNR, ISMAR, I-40129, Bologna, Italy
DOI 10.17882/92690
Publisher SEANOE
Note In addition to properly cite this data set DOI, it would be appreciated that in any publication using it, a citation is included of the paper: Vincent, C. et al., Evolution of a cold intra-transform ridge segment through oceanic core complex splitting and mantle exhumation, St Paul Transform system, Equatorial Atlantic, submitted to G3, 2023.
Keyword(s) Mid-Oceanic Ridge, Transform faults, Mid-Atlantic Ridge, Saint Paul transform fault systm, Equatorial Atlantic, Multibeam bathymetry, Gravity anomaly, Crustal thickness, Marine geophysics, Tectonics, Detachment faults, Oceanic Core Complex, Oceanic lithosphere, Oceanic crust
Abstract

Gridded shipboard multibeam bathymetry and gravity datasets acquired during the COLMEIA cruise (2013). Gridded sediment thickness derived from seismic data. Gridded crustal thickness computed from gravity. The gridded datasets cover the South intra-transform segment of the St. Paul transform fault system.

Grids created with the GMT software.

Grid details as follows:

Bathymetry: Grid file format: nf = GMT netCDF format (32-bit float), CF-1.7

x_min: -26.6678081446 x_max: -24.4991923884 x_inc: 0.000898349526186 name: longitude n_columns: 2415

y_min: 0.416125587833 y_max: 0.917145899441 y_inc: 0.000904368793517 name: latitude n_rows: 555

Sediment thickness: Grid file format: nf = GMT netCDF format (32-bit float), CF-1.7

x_min: -26.6697086826 x_max: -24.4984586826 x_inc: 0.00225 name: longitude n_columns: 966

y_min: 0.4154644221 y_max: 0.9194644221 y_inc: 0.00225 name: latitude n_rows: 225

Free air anomaly (merged shipboard and satellite data): Grid file format: nf = GMT netCDF format (32-bit float), CF-1.7

x_min: -26.6666666667 x_max: -24.5 x_inc: 0.0166666666667 (1 min) name: longitude n_columns: 131

y_min: 0.416666666667 y_max: 0.916666666667 y_inc: 0.0166666666667 (1 min) name: latitude n_rows: 31

Gravity anomalies (Mantle Bouguer, Residual Mantle Bouguer): Grid file format: nf = GMT netCDF format (32-bit float), CF-1.7

x_min: -26.6666666667 x_max: -24.5 x_inc: 0.00333333333333 (12 sec) name: longitude n_columns: 651

y_min: 0.416666666667 y_max: 0.916666666667 y_inc: 0.00333333333333 (12 sec) name: latitude n_rows: 151

Crustal thickness derived from the gravity anomalies: Grid file format: nf = GMT netCDF format (32-bit float), CF-1.7

x_min: -26.6666666667 x_max: -24.5 x_inc: 0.00333333333333 (12 sec) name: longitude n_columns: 651

y_min: 0.416666666667 y_max: 0.916666666667 y_inc: 0.00333333333333 (12 sec) name: latitude n_rows: 151

 

 

 

 

Licence CC-BY-NC-ND
Sensor metadata

Multibeam bathymetry acquired with NO L'Atalante Kongsberg EM122 echosounder.

Shipboard gravity data acquired with a Bodenseewerk KSS30 sensor.

Data
File Size Format Processing Access
3 MB GRD (GMT NETCDF) Processed data Access on demand until 2024-01-01
17 KB GRD (GMT NETCDF) Processed data Access on demand until 2024-01-01
261 KB GRD (GMT NETCDF) Processed data Access on demand until 2024-01-01
115 KB GRD (GMT NETCDF) Processed data Access on demand until 2024-01-01
243 KB GRD (GMT NETCDF) Processed data Access on demand until 2024-01-01
267 KB GRD (GMT NETCDF) Processed data Access on demand until 2024-01-01
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How to cite 

Maia Marcia, Vincent Clément, Briais Anne, Ligi Marco (2023). Gridded geophysical shipboard data on the South Intra-Transform segment of the St. Paul transform system (COLMEIA cruise). SEANOE. https://doi.org/10.17882/92690