The AMORGOS-23 cruise (https://doi.org/10.17600/18003211) was conducted onboard R/V Europe from April 26th 2023 to May 9th 2023. Using HROV Ariane equipped with 4K cameras, we surveyed the main active faults between Amorgos and Anafi islands in order to identify and quantify recent deformation of the seafloor linked to the 1956 Amorgos earthquake. During dive 244-1, we surveyed the steepest scarp of the Amorgos fault, along its central segment. We provide here seven scaled Digital Outcrop Models (in .obj format) calculated from the HROV videos with MATISSE 3D software. There location (model origin) is also provided in a table, together with information about the portions of the videos used to produce the models. Due to incomplete navigation data, the models are not properly oriented.

AUV photomosaics of the seafloor at the shallow-water Milos hydrothermal system. Photomosaics were acquired with the Sparus II (Iqua, Girona) AUV and constructed from vertically acquired still images. Images were acquired in July 2019 at the Paleochori and Spathi Bays. Photomosaics are provided as geotiffs (UTM Zone 35). This dataset includes both original photomosaics, that show distortions due to AUV navigation drift, and georeferenced photomosaics, that have been registered with the associated drone photomosaics at these same areas.

This dataset contains seismic data from 17 OBS collected in the equatorial Atlantic Ocean during the SMARTIES cruise in 2019. 12 OBSs are located along the eastern Romanche transform and fracture zone, and 5 OBSs are located along the Mid-Atlantic Ridge. The OBS data are vertical components and recorded in MiniSEED format. The data collection started from 2019-07-20T00:00:00 to 2019-08-16T24:00:00. This dateset includes raw data from OBS #10 to OBS#19. OBS#15 recorded no data. Data from OBS#1 to OBS#9 are available from a companion dataset. OBS#8 was lost.

The following data were acquired in 2013 by the french research vessel N/O Suroit during the CIRCEE cruise (see the cruise report): - High-resolution 72-trace seismic data. The files are available in the segy format. A map is provided to locate the 1500 km of seismic profile acquired. - Gridded bathymetry data (resolution : 90m) available in GRD format (software GMT Generic Mapping Software de Wessel & Smith based on NetCDF libraries). A map is available. - Bathymetry data from multibeam echo sounder Kongsberg-Simrad EM302. The data are available in the raw data mbg and include the travel time and amplitude (reflectivity). - Highfrequency chirp-sonar data. The files are available in the segy format. A map is available in the cruise report.

Photomosaics acquired by ROV Victor during ODEMAR cruise, Dive #563, with OTUS camera (B&W) vertically mounted. Track follows the Roseau Fault (French Antilles, off Les Saintes islands). GEOTIFFS projected in WGS84 UTM Zone 20N.  

Gridded shipboard multibeam bathymetry and backscatter mosaics along the axis of the Mid-Atlantic Ridge. The used data are part of the dataset acquired during the SMARTIES cruise (2019). The gridded datasets cover different portions of the axis of the Mid-Atlantic Ridge south of the Romanche transform fault. Bathymetry grids format: nf = GMT netCDF format (32-bit float), CF-1.7 area NTD1_W grid information: x_min: -16.8647 x_max: -16.716917313 x_inc: 0.000180003272838 name: x n_columns: 822 y_min: -0.0246146868 y_max: 0.0418 y_inc: 0.000179985601084 name: y n_rows: 370 area NTD1_E grid information: x_min: -16.6878 x_max: -16.6098585829 x_inc: 0.000180003272748 name: x n_columns: 434 y_min: -0.0313156947 y_max: 0.0225 y_inc: 0.000179985601003 name: y n_rows: 300 area RC2 grid information: x_min: -16.5302 x_max: -16.3748571756 x_inc: 0.000180003272769 name: x n_columns: 864 y_min: -0.2029041037 y_max: -0.0042 y_inc: 0.000179985601178 name: y n_rows: 1105 area NTD2 grid information: x_min: -16.29 x_max: -16.183078056 x_inc: 0.000180003272727 name: x n_columns: 595 y_min: -0.2707547876 y_max: -0.2056 y_inc: 0.000179985601105 name: y n_rows: 363 area RC3 grid information: x_min: -16.1522 x_max: -16.065078416 x_inc: 0.000180003272727 name: x n_columns: 485 y_min: -0.3490268035 y_max: -0.30907 y_inc: 0.000179985601351 name: y n_rows: 223  

Multibeam bathymetry data, gridded at 40m, acquired around the 13°20'N and 13°30'N oceanic detachments along the Mid-Atlantic Ridge. Bathymetric data was acquired by the PourQUoi Pas? multibeam system (RESON 7150). Data is provided as a grid in GRD format (GMT NETCDF). grdinfo of the file: - ODEMAR_Shipboard_Bathymetry_40m.grd: Title: Bathy_40m.grd - ODEMAR_Shipboard_Bathymetry_40m.grd: Command: File written by MATLAB function grdwrite2.m - ODEMAR_Shipboard_Bathymetry_40m.grd: Remark: Created 22-Nov-2014 16:35:13 - ODEMAR_Shipboard_Bathymetry_40m.grd: Gridline node registration used [Cartesian grid] - ODEMAR_Shipboard_Bathymetry_40m.grd: Grid file format: nf = GMT netCDF format (32-bit float), COARDS, CF-1.5 - ODEMAR_Shipboard_Bathymetry_40m.grd: x_min: -45.14293893 x_max: -44.77177893 x_inc: 0.00036 name: x nx: 1032 - ODEMAR_Shipboard_Bathymetry_40m.grd: y_min: 13.20017553 y_max: 13.62389553 y_inc: 0.00036 name: y ny: 1178 - ODEMAR_Shipboard_Bathymetry_40m.grd: z_min: -4498.29248047 z_max: -1935.33117676 name: z - ODEMAR_Shipboard_Bathymetry_40m.grd: scale_factor: 1 add_offset: 0 - ODEMAR_Shipboard_Bathymetry_40m.grd: format: classic

Multibeam bathymetry acquired by AUV Abyss (GEOMAR), during the ODEMAR Cruise off Les Saintes ilsnads (French Antilles). Data is processed and gridded at 2 m resolution.

Multibeam bathymetry data, gridded at ~100m, acquired around during the transit towards the Mid-Atlantic ridge axis (13°20'N and 13°30'N oceanic detachments area) during the ODEMAR cruise (2013). Bathymetric data was acquired by the PourQUoi Pas? multibeam system (RESON SEABAT 7150). Data is provided as geotiffs (WGS84) ODM_transit_16Nov.tif Extent  -27.8375538800000015,16.3530121699999995 : -26.3755538800000018,16.6860121699999979 Width    1463 Height    334 Data type    Float32 - Thirty two bit floating point GDAL Driver Description    GTiff GDAL Driver Metadata    GeoTIFF Dataset Description  /Users/jescartin/WORK/Proyectos/ODEMAR/DATA/Bathygrids/Transit/ODM_transit_16Nov.tif Compression    PACKBITS Band 1     STATISTICS_MAXIMUM=-4139.5639648438 STATISTICS_MEAN=-4612.4823849892 STATISTICS_MINIMUM=-4866.7373046875 STATISTICS_STDDEV=121.40234041923 STATISTICS_VALID_PERCENT=29.85 Scale: 1 Offset: 0 More information     AREA_OR_POINT=Area TIFFTAG_SOFTWARE=MATLAB 9.14, Mapping Toolbox 5.5 Dimensions    X: 1463 Y: 334 Bands: 1 Origin    -27.8375538800000015,16.6860121699999979 Pixel Size    0.0009993164730006834189,-0.0009970059880239474058 ODM_transit_17Nov.tif Extent -32.4955601099999996,15.5934151199999995 : -27.8195601099999976,16.4454151199999998 Width    4677 Height    853 Data type    Float32 - Thirty two bit floating point GDAL Driver Description    GTiff GDAL Driver Metadata    GeoTIFF Dataset Description  /Users/jescartin/WORK/Proyectos/ODEMAR/DATA/Bathygrids/Transit/ODM_transit_17Nov.tif Compression    PACKBITS Band 1     STATISTICS_APPROXIMATE=YES STATISTICS_MAXIMUM=-4458.8168945312 STATISTICS_MEAN=-5144.8000932272 STATISTICS_MINIMUM=-5562.1850585938 STATISTICS_STDDEV=164.55246561258 STATISTICS_VALID_PERCENT=50.04 Scale: 1 Offset: 0 More information     AREA_OR_POINT=Area TIFFTAG_SOFTWARE=MATLAB 9.14, Mapping Toolbox 5.5 Dimensions    X: 4677 Y: 853 Bands: 1 Origin    -32.4955601099999996,16.4454151199999998 Pixel Size    0.0009997861877271759391,-0.0009988276670574447458   ODM_transit_18Nov.tif Extent -36.9279732571747630,14.8264479347363469 : -32.4729732571747647,15.7054479347363465 Width    4456 Height    880 Data type    Float32 - Thirty two bit floating point GDAL Driver Description    GTiff GDAL Driver Metadata    GeoTIFF Dataset Description   /Users/jescartin/WORK/Proyectos/ODEMAR/DATA/Bathygrids/Transit/ODM_transit_18Nov.tif Compression    PACKBITS Band 1     STATISTICS_APPROXIMATE=YES STATISTICS_MAXIMUM=-5171.58203125 STATISTICS_MEAN=-5712.1738558372 STATISTICS_MINIMUM=-5946.1611328125 STATISTICS_STDDEV=139.45706418798 STATISTICS_VALID_PERCENT=7.565 Scale: 1 Offset: 0 More information     AREA_OR_POINT=Area TIFFTAG_SOFTWARE=MATLAB 9.14, Mapping Toolbox 5.5 Dimensions    X: 4456 Y: 880 Bands: 1 Origin    -36.9279732571747630,15.7054479347363465 Pixel Size    0.0009997755834829438748,-0.0009988636363636358394   ODM_transit_19Nov.tif Extent -41.3188024399999989,14.0843680599999992 : -36.8828024399999990,14.9493680599999994 Width    4437 Height    866 Data type    Float32 - Thirty two bit floating point GDAL Driver Description    GTiff GDAL Driver Metadata    GeoTIFF Dataset Description   /Users/jescartin/WORK/Proyectos/ODEMAR/DATA/Bathygrids/Transit/ODM_transit_19Nov.tif Compression    PACKBITS Band 1     STATISTICS_APPROXIMATE=YES STATISTICS_MAXIMUM=-4540.5317382812 STATISTICS_MEAN=-5176.2961468757 STATISTICS_MINIMUM=-5426.123046875 STATISTICS_STDDEV=183.14492125461 STATISTICS_VALID_PERCENT=7.674 Scale: 1 Offset: 0 More information     AREA_OR_POINT=Area TIFFTAG_SOFTWARE=MATLAB 9.14, Mapping Toolbox 5.5 Dimensions    X: 4437 Y: 866 Bands: 1 Origin    -41.3188024399999989,14.9493680599999994 Pixel Size    0.0009997746224926751767,-0.0009988452655889147342 ODM_transit_20Nov.tif Extent -44.9630377200000027,13.5018919999999998 : -41.3030377200000061,14.1828919999999989 Width    3661 Height    682 Data type    Float32 - Thirty two bit floating point GDAL Driver Description    GTiff GDAL Driver Metadata    GeoTIFF Dataset Description   /Users/jescartin/WORK/Proyectos/ODEMAR/DATA/Bathygrids/Transit/ODM_transit_20Nov.tif Compression    PACKBITS Band 1     STATISTICS_APPROXIMATE=YES STATISTICS_MAXIMUM=-3173.7924804688 STATISTICS_MEAN=-4347.3027374804 STATISTICS_MINIMUM=-4821.65625 STATISTICS_STDDEV=276.6463937856 STATISTICS_VALID_PERCENT=42.31 Scale: 1 Offset: 0 More information     AREA_OR_POINT=Area TIFFTAG_SOFTWARE=MATLAB 9.14, Mapping Toolbox 5.5 Dimensions    X: 3661 Y: 682 Bands: 1 Origin    -44.9630377200000027,14.1828919999999989 Pixel Size    0.0009997268505872703662,-0.000998533724340174662

The precise location and geometry of oceanic spreading centers and associated transform faults or discontinuities' boundary has fundamental implications in our understanding of oceanic accretion, the accommodation of deformation around rigid lithospheric blocks, and the distribution of magmatic and volcanic processes. The now widely used location of mid oceanic ridges worldwide, published by P. Bird in 2003, can be updated based on recent publicly available and published ship-based multibeam swath bathymetry data (100-m resolution or better), now available to ~25% of the ocean seafloor, but covering a significant proportion of the mid-ocean ridge system (>70%). Here we publish the MAPRIDGES database built under the coordination of CGMW (Commission for the Geological Map of the World), with a first version V1.0 (06/2024) that provides high resolution and up-to-date datasets of mid-ocean ridge segments and associated transform faults, and follow-up updates that will also include non-transform offsets. The detailed mapping of individual mid oceanic ridge segments was conducted using GMRT (Ryan et al., 2009) (version 4.2 for MAPRIDGES V1.0), other publicly available datasets (e.g., NCEI, Pangaea, AWI), and existing literature. MAPRIDGES will be revised with the acquisition of additional datasets, new publications, and correction of any errors in the database. The MAPRIDGE database was built in a GIS environment, where each feature holds several attributes specific to the dataset. We include three different georeferenced shapefile layers: 1) Ridge Segments, 2) Transform Faults, and 3) Transform Zones. The latest corresponds to zones of distributed strike-slip deformation that lack a well-defined fault localizing strain, but that are often treated as transform faults. 1) The Ridge Segments Layer contains 1461 segments with 9 attributes: - AREA_LOCA: The Name of the Ridge System - LOC_SHORT: The short form of the Ridge System using 3 characters - LAT: The maximum latitude of the ridge segment - LONG: the maximum longitude of the ridge segment - LENGTH: the length of the ridge segment in meters - CONFIDENCE: the degree of confidence on digitization based on the availability of high-resolution bathymetry data: 1 = low to medium confidence, 2 = high confidence - REFERENCES: supporting references used for the digitization - NAME_CODE: unique segment code constructed from the LOC_SHORT and LAT attributes in degree, minute, second coordinate format - NAME_LIT: name of the segment from the literature if it exists 2) The Transform Fault Layer contains 260 segments with 4 attributes: - NAME_TF: Name of the transform fault according to the literature - LENGTH: length of the transform fault in meters - LAT: The maximum latitude of the fault segment - LONG: the maximum longitude of the fault segment 3) The Transform Zone layer contains 10 segments with 4 attributes: - NAME_TF: Name of the transform zone according to the literature - LENGTH: length of the transform fault in meters - LAT: The maximum latitude of the fault segment - LONG: the maximum longitude of the fault segment To facilitate revisions and updates of the database, relevant information, corrections, or data could be sent to B. Sautter (benjamin.sautter@univ-ubs.fr) and J. Escartín (escartin@geologie.ens.fr).