AUTHORS: J. Escartín, M. Cannat, Anne Deschamps(*) Escartín, Javier ENS, CNRS UMR 8538, Paris, France escartin@geologie.ens.fr; escartin.javier@gmail.com Cannat, Mathilde IPGP, CNRS UMR 7585, Paris, France cannat@ipgp.fr Anne Deschamps UBO, CNRS UMR 6538, Plouzane, France (*) Anne Deschamps passed away in 2014, and participated in data gathering, processing, and preliminary interpretation ±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±± DESCRIPTION: Multibeam near-bottom bathymetry from the Lucky Strike ridge segment along the Mid-Atlantic Ridge. The bathymetry data were acquired during AUV Asterx and ROV Victor6000 surveys during three different cruises (MOMARETO 2006, MOMAR'08-Leg1, & BATHYLUCK'09). The dataset includes a central grid (LuckyStrike_microbathymetry_Centre) that combines data from several AUV and ROV dives, and where original bathymetry grids for each dive have been manually shifted and combined into a single grid, using other datasets (shipboard bathymetry, acoustic sonar data from the Lustre'96 data) for geographical reference. The rest of the grids are from single dives. All grids are provided in NETCDF GMT .grd format, and with two associated GEOTIFFS with both the bathymetry DEM and the hillside (illumination) file. All data is given in WGS84 (WGS 84 - WGS84 - EPSG:4326). ±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±± GRIDS (from N to S): 1) LuckyStrike_microbathymetry_Centre 2) LuckyStrike_microbathymety_AUV35 3) LuckyStrike_microbathymetry_ROV396N 4) LuckyStrike_microbathymetry_ROV396S 5) LuckyStrike_microbathymety_AUV34 1) LuckyStrike_microbathymetry_Centre.grd: x_min: -32.34 x_max: -32.23 x_inc: 1e-05 name: n_columns: 11001 y_min: 37.23 y_max: 37.308 y_inc: 1e-05 name: n_rows: 7801 z_min: -2171.76538086 z_max: -1540.50634766 name: z 2) LuckyStrike_microbathymetry_AUV35.grd x_min: -32.348417701 x_max: -32.296417699 x_inc: 9.99807766244e-06 name: n_columns: 5202 y_min: 37.1912709982 y_max: 37.2194910018 y_inc: 9.99645892351e-06 name: n_rows: 2824 z_min: -2498.23925781 z_max: -2141.6953125 name: z 3) LuckyStrike_microbathymetry_ROV396N.grd x_min: -32.3532 x_max: -32.3184 x_inc: 1e-05 name: n_columns: 3481 y_min: 37.1352 y_max: 37.1517 y_inc: 1e-05 name: n_rows: 1651 z_min: -2863.2800293 z_max: -2519.01831055 name: z 4) LuckyStrike_microbathymetry_ROV396S.grd x_min: -32.3845516206 x_max: -32.3490705719 x_inc: 1.09543219438e-05 name: n_columns: 3240 y_min: 37.1323149104 y_max: 37.1477202149 y_inc: 8.99842554965e-06 name: n_rows: 1713 z_min: -2841.45996094 z_max: -2639.89990234 name: meter 5) LuckyStrike_microbathymetry_AUV34.grd x_min: -32.436666 x_max: -32.3933494 x_inc: 3.09625446748e-05 name: n_columns: 1400 y_min: 37.123333 y_max: 37.1574905 y_inc: 2.47877358491e-05 name: n_rows: 1379 z_min: -2672.25 z_max: -1889 name: user_z_unit ±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±± REFERENCES: Escartin, J., Barreyre, T., Cannat, M., Garcia, R., Gracias, N., Deschamps, A., Salocchi, A., Sarradin, P.M., and Ballu, V., 2015, Hydrothermal activity along the slow-spreading Lucky Strike ridge segment (Mid-Atlantic Ridge): Distribution, heatflux, and geological controls: Earth and Planetary Science Letters, v. 431, p. 173–185, doi: 10.1016/j.epsl.2015.09.025. Gini, C., and J. Escartín Melt Supply Variations at Slow-Spreading Ridges Control Mode of Upper Crustal Construction: Constraints from Distribution of Volcanic Facies along the Lucky Strike Segment (Mid-Atlantic Ridge), Fall AGU 2018 Meeting, Washington DC., USA, 10-14 Dec. 2018. ±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±± CRUISES: 1) 2006 bathymetry acquired over the Lucky Strike lava lake and hydrothermal field MOMARETO Cruise https://doi.org/10.17600/6030130 Vehicle: ROV VICTOR 6000 Dives: Victor 284 & 285 Multibeam: RESON Seabat 7125 Original grid resolution: 0.5 m Reference: Ondréas, H., Cannat, M., Fouquet, Y., Normand, A., Sarradin, P.M., and Sarrazin, J., 2009, Recent volcanic events and the distribution of hydrothermal venting at the Lucky Strike hydrothermal field, Mid-Atlantic Ridge: Geochemistry, Geophysics, Geosystems, v. 10, no. 2, p. n/a-n/a, doi: 10.1029/2008GC002171. 2) 2008 bathymetry acquired North and South of the Lucky Strike hydrothermal field, along axis MOMAR'08 Leg 1 Cruise https://doi.org/10.13155/47148 Vehicle: ROV VICTOR 6000 Dive: Victor 363 Multibeam: RESON Seabat 7125 Original grid resolution: 1 m Reference: Escartin Javier (2009). MoMAR’08 – Leg 1 (Lucky Strike). Cruise Report. 9-24 Aug 2008.N/O Atalante – Victor 6000. https://doi.org/ 10.13155/47148 3) 2009 bathymetry along the Lucky Strike segment BATHYLUCK 2009 https://doi.org/10.17600/9030040 Vehicle: ROV VICTOR 6000 Dives: Victor 393 and 394 Multibeam: RESON Seabat 7125 Original grid resolution: 1 m Reference: Escartin Javier, Cannat M (2009). Bathyluck’09 Cruise (Lucky Strike). Horta-Horta (Portugal), August 31st - September 29th 2009. NO PourQuoi Pas ? - ROV Victor 6000 – AUV AsterX. https://doi.org/ 10.13155/47147 BATHYLUCK 2009 https://doi.org/10.17600/9030040 Vehicle: ROV AsterX 6000 Dives: AsterX 27, 30 & 33 (1, 4, 7 - cruise dive number) Multibeam: RESON Seabat 7125 Original grid resolution: 1 m Reference: Escartin Javier, Cannat M (2009). Bathyluck’09 Cruise (Lucky Strike). Horta-Horta (Portugal), August 31st - September 29th 2009. NO PourQuoi Pas ? - ROV Victor 6000 – AUV AsterX. https://doi.org/ 10.13155/47147 ±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±