All files here are available for free use provided proper referencing as indicated in each case.  If you want to contribute additional data and/or files relevant to the MOMAR area, please email to: escartin@ipgp.jussieu.fr
Last update: 08 2004, J. Escartin.

GENERAL

Satellite location map Free-air satellite-derived gravity map of the Azores area and general location of the Menez Gwen, Lucky Strike, Saldanha and Rainbow vent fields. Satellite gravity from: Sandwell, D. T., and W. H. F. Smith, Marine gravity anomaly from Geosat and ERS1 satellite altimetry, J. Geophys. Res., 102, 10039-10054, 1997 Files Modified from Plate 1 in: Escartin , J.; M. Cannat; G. Pouliquen; A. Rabain and J. Lin,    Constraints on the interaction between the Mid-Atlantic Ridge and the Azores hotspot from bathymetry and gravity (36-39N), J. Geophys. Res., 106, 21719-21736, 2001 (use this reference if using this figure in presentations, publications, proposals, etc.) pdf file - jpeg (2215 x 2021) - jpeg (1000 x 912)

Bathymetric compilation of the Azores Plateau Bathymetric compilation around the Azores Islands and Plateau, from: Lourenço, N., J.M. Miranda, J.F. Luis, A. Ribeiro, L.A. Mendes Victor, J. Madeira, and H.D. Needham, Morpho-tectonic analysis of the Azores volcanic plateau from a new bathymetric compilation of the area, Marine Geophysical Researches, 20 (141-156), 1998. jpeg (2555 x 2184) - jpeg (1000 x 855) GMT compiled bathymetry grid : reference Lourenço et al. 1998 x_min: -32 x_max: -24 x_inc: 0.0166667 units: user_x_unit nx: 481 y_min: 36 y_max: 41 y_inc: 0.0166667 units: user_y_unit ny: 301 z_min: -4719.78 z_max: 1808.8 units: user_z_unit Plateau_bathy.grd

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LUCKY STRIKE SEGMENT

Multibeam bathymetry map Multibeam bathymetry map (Simrad EM12) from the Sudaçores cruise (N/O Atalante, France; PI: Mathilde Cannat, CNRS, France): Cannat, M., A. Briais, C. Deplus, J. Escartin, J. Georgen, J. Lin, S. Mercouriev, C. Meyzen, M. Muller, G. Pouliquen, A. Rabain and P. da Silva , Mid-Atlantic Ridge-Azores hotspot interactions: Along-axis migrationof a hotspot-derived event of enhanced magmatism 10 to 4 Ma ago. Earth Planet. Sci. Lett., 173, 257-269, 1999. Files Modified from Plate 2 in: Escartin , J.; M. Cannat; G. Pouliquen; A. Rabain and J. Lin,    Constraints on the interaction between the Mid-Atlantic Ridge and the Azores hotspot from bathymetry and gravity (36-39N), J. Geophys. Res., 106, 21719-21736, 2001 (use this reference if using this figure in presentations, publications, proposals, etc.) pdf file - jpeg (3356 x 2247) - jpeg (1000 x 670)   GMT EM12 multibeam bathymetry grid (300 m & 100 m grid-spacing): reference Cannat et al. 1999 & Escartin et al. 2001 300 m-grid x_min: -35.0167 x_max: -30.4816 x_inc: 0.0032863 units: user_x_unit nx: 1381 y_min: 36.15 y_max: 38.0185 y_inc: 0.00270409 units: user_y_unit ny: 692 z_min: -3670.4 z_max: -230.6 units: user_z_unit 100 m grid x_min: -33.172 x_max: -31.3744 x_inc: 0.00109543 units: user_x_unit nx: 1642 y_min: 36.8179 y_max: 37.9987 y_inc: 0.000901363 units: user_y_unit ny: 1311 z_min: -3672.8 z_max: -325.6 units: user_z_unit LS_300m.grd - LS_300m.mat - LuckyStrike100m.grd
Multibeam bathymetry map - 40 m grid spacing Multibeal bathymetry map (Simrad EM12) from the Flores Cruise (1997; N/O Atalante, France, PI: Y. Fouquet, IFREMER) GMT multibeam grid (~40 m spacing) x_min: -32.5666 x_max: -32.0554 x_inc: 0.000451192 units: user_x_unit nx: 1134 y_min: 36.9168 y_max: 37.6756 y_inc: 0.000360304 units: user_y_unit ny: 2107 z_min: -3717.65 z_max: -558.081 units: user_z_unit You may obtain the original 40-m grid directly from: Yves Fouquet at IFREMER: yves.fouquet@ifremer.fr
Autonomous Underwater Hydrophone (AUH) & Teleseismic events Seismicity recorded by Autonomous Underwater Hydrophones (solid circles) and teleseismicity (triangles). A swarm of earthquakes occurred in 2001, as recorded both by the AUH and the teleseismic arrays. A web page for these seismic events, with links to a Ridge paper is available at NOAA: http://www.pmel.noaa.gov/vents/acoustics/seismicity/mar/LuckyStrike2001.html The most up to date AUH locations are available on-line from the NOAA hydroacoustic Monitoring site: http://autochart.pmel.noaa.gov:1776/autochart/GetPosit.html Files Figure courtesy of R. Dziak (NOAA). General references on hydrophone events: Dziak, R.P., D.K. Smith, D. Bohnenstiehl, C.G. Fox, H. Matsumoto, M. Tolstoy, and D. Fornari, Evidence of a recent magma dike intrusion at the slow-spreading Lucky Strike segment, Mid-Atlantic Ridge, Journal of Geophysical Research, in press. Smith, D. K., M. Tolstoy, C. G. Fox, D. R. Bohnenstiehl, H. Matsumoto, and M. J. Fowler, Hydroacoustic monitoring of seismicity along the Mid-Atlantic Ridge, Geophys. Res. Lett.,29 (11), 10.1029/2001GL013912, 2002 Smith, D. K., J. Escartín, M. Cannat, M. Tolstoy, C. G. Fox, D. R. Bohnenstiehl, S. Bazin, Spatial and temporal distribution of seismicity along the Mid-Atlantic Ridge, J. Geophys. Res., 108(B3),  10.1029/2002JB001964, 2003. pdf file - jpeg (1100 x 1424) - jpeg (500 x 647)

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LUCKY STRIKE VOLCANO

DSL120 High-resolution bathymetry Phase bathymetry maps from DSL120 (WHOI), from the LUSTRE'96 cruise (RV Knorr, USA, PIs: Dan Fornari & Susan Humphries, WHOI) Files Multibeam bathymetry maps from Scheirer et al: Scheirer, D.S., D.J. Fornari, S.E. Humphris, and S. Lerner, High-resolution seafloor mapping using the DSL-120 sonar system: Quantitative assessment of sidescan and phase-bathymetry data from the Lucky Strike segment of the Mid-Atlantic Ridge, Marine Geophysical Researches, 21 (121-142), 2000.(use this reference if using any of these figures or grids in presentations, publications, proposals, etc.) Note: see Scheirer et al. for differences in bathymetry files Bathymetry map, all data, 37°13.5'N-22'N - pdf file- Bathymetry map, shaded relief, central volcano, 37°16'-19'N - pdf file - Bathymetry contour map, central volcano, 37°16'-19'N - pdf file - Bathymetry map and side-scan sonar overlay, 37°16'-19'N - pdf file - Bathymetry contour map and side-scan sonar overlay, 37°16'-19'N - pdf file - GMT DSL120 bathymetry grid - Scheirer et al. 2000 x_min: -32.35 x_max: -32.2 x_inc: 0.000112782 units: Longitude nx: 1331 y_min: 37.2167 y_max: 37.3667 y_inc: 9.01442e-05 units: Latitude ny: 1665 z_min: 1425.69 z_max: 2392.94 units: Depth (m) lustre96_bathy_10m.grd - lustre96_bathy_10m.mat

DSL120 High-resolution acoustic backscatter  Side-scan sonar images from DSL120 (WHOI), from the LUSTRE'96 cruise (RV Knorr, USA, PIs: Dan Fornari & Susan Humphries, WHOI) Files Mosaiced sonar images and maps from Scheirer et al: Scheirer, D.S., D.J. Fornari, S.E. Humphris, and S. Lerner, High-resolution seafloor mapping using the DSL-120 sonar system: Quantitative assessment of sidescan and phase-bathymetry data from the Lucky Strike segment of the Mid-Atlantic Ridge, Marine Geophysical Researches , 21 (121-142), 2000. (use this reference if using any of these figures in presentations, publications, proposals, etc.) Note: see Scheirer et al. for differences in bathymetry files Side-scan sonar map, 37°14'N-17'N - pdf file -     Side-scan sonar map, 37°16'N-19'N - pdf file - Side-scan sonar map, 37°15.8'N-19.2'N - pdf file -     Side-scan sonar map, 37°17'N-20'N - pdf file    - GMT DSL120 side-scan sonar grids - Scheirer et al. 2000 x_min: -32.3 x_max: -32.25 x_inc: 4.51264e-05 units: Longitude nx: 1109 y_min: 37.2833 y_max: 37.3333 y_inc: 3.6049e-05 units: Latitude ny: 1388 z_min: 0 z_max: 540110 units: Sidescan lustre96_NEWnorth_all_4m.grd - lustre96_NEWnorth_all_4m.mat x_min: -32.3033 x_max: -32.2467 x_inc: 4.51162e-05 units: Longitude nx: 1257 y_min: 37.2633 y_max: 37.32 y_inc: 3.60477e-05 units: Latitude ny: 1573 z_min: 0 z_max: 523829 units: Sidescan lustre96_summit_4m_ss.grd - lustre96_summit_4m_ss.mat

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LUCKY STRIKE VENT FIELD

Location of vents Compilation of locations and names of high-temperature vent sites from published papers. If you want to post additional info, corrections, new vent sites, etc send email to escartin@ipgp.jussieu.fr. [excel table] - [pdf table] Imaginex 4-m bathymetry grid Bathymetry of the Lucky Strike vent field from 650 kHz altimeter sonar acquired during the Argo-II survey (Lustre'96, PI: S. Humphris, D. Fornari, WHOI). Reference: Susan E. Humphris, Daniel J. Fornari, Daniel S. Scheirer,Christopher R. German, Lindsay M. Parson, Geotectonic Setting of Hydrothermal Activity on the Summit of Lucky Strike Seamount (37°17'N, Mid-Atlantic Ridge), Geophysics, Geochemistry, Geosystems (g-cubed), in press. (use this reference if using this figure in presentations, publications, proposals, etc.) Grids in UTM and Lat-Lon, ~4-m grid spacing LSimaginex_UTM.grd: x_min: 563200 x_max: 564440 x_inc: 4 : nx: 311 y_min: 4.1267e+06 y_max: 4.1279e+06 y_inc: 4 : ny: 301 z_min: 1567.47 z_max: 1744.46 units: user_z_unit LSimaginex_latlon.grd: x_min: -32.2867 x_max: -32.2733 x_inc: 4.5045e-05 : nx: 297 y_min: 37.2833 y_max: 37.2967 y_inc: 3.6036e-05 : ny: 371 z_min: 1565.25 z_max: 1744.87 units: user_z_unit
Geological Map Geological map from the LUSTRE'96 cruise (RV Knorr, USA, PIs: Dan Fornari & Susan Humphries, WHOI)   Files Lucky Strike vent field geological map, modified from: Susan E. Humphris, Daniel J. Fornari, Daniel S. Scheirer,Christopher R. German, Lindsay M. Parson, Geotectonic Setting of Hydrothermal Activity on the Summit of Lucky Strike Seamount (37°17'N, Mid-Atlantic Ridge), Geophysics, Geochemistry, Geosystems (g-cubed), in press. (use this reference if using this figure in presentations, publications, proposals, etc.) pdf file - jpeg (1077 x 1381) - jpeg (500 x 641)
Vent location map Location of hydrothermal vents and markers, Lucky Strike hydrothermal vent site (Desbruyères et al., 2001). Files Map from: Desbruyères, D., M. Biscoito, J.-C. Caprais, A. Colaço, T. Comtet, P. Crassous, Y. Fouquet, A. Khripounoff, N. Le Bris, K. Olu, R. Riso, P.-M. Sarradin, M. Segonzac, and A. Vangriesheim, Variations in deep-sea hydrothermal vent communities on the Mid-Atlantic Ridge near the Azores plateau, Deep-Sea Research, 48, 1325-1346, 2001. (use this reference if using this figure in presentations, publications, proposals, etc.) pdf file - jpeg (1931 x 1532) - jpeg (1000 x 793)

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MENEZ GWEN VENT FIELD

Vent location map Location of hydrothermal vents and markers, Lucky Strike hydrothermal vent site (Desbruyères et al., 2001). Files Map from: Desbruyères, D., M. Biscoito, J.-C. Caprais, A. Colaço, T. Comtet, P. Crassous, Y. Fouquet, A. Khripounoff, N. Le Bris, K. Olu, R. Riso, P.-M. Sarradin, M. Segonzac, and A. Vangriesheim, Variations in deep-sea hydrothermal vent communities on the Mid-Atlantic Ridge near the Azores plateau, Deep-Sea Research, 48, 1325-1346, 2001. (use this reference if using this figure in presentations, publications, proposals, etc.) pdf file - jpeg (1915 x 1368) - jpeg (1000 x 714)

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RAINBOW VENT FIELD

Vent location map Location of hydrothermal vents and markers, Lucky Strike hydrothermal vent site (Desbruyères et al., 2001). Files Map from: Desbruyères, D., M. Biscoito, J.-C. Caprais, A. Colaço, T. Comtet, P. Crassous, Y. Fouquet, A. Khripounoff, N. Le Bris, K. Olu, R. Riso, P.-M. Sarradin, M. Segonzac, and A. Vangriesheim, Variations in deep-sea hydrothermal vent communities on the Mid-Atlantic Ridge near the Azores plateau, Deep-Sea Research, 48, 1325-1346, 2001. (use this reference if using this figure in presentations, publications, proposals, etc.) pdf file - jpeg (1907 x 2304) - jpeg (1000 x 1208)

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SALDANHA VENT FIELD

Site location map Bathymetryc map of the Saldanha site, with Nautile tracks from the Slandanha Cruise. Files Map modified from: Miranda, J.M., P.F. Silva, N. Lourenço, B. Henry, R. Costa, and S. Team, Study of the Saldanha Massif (MAR): constraints from rock magnetic and geophysical data, Marine Geophysical Researches, 23, 299-318, 2002. (use this reference if using this figure in presentations, publications, proposals, etc.) pdf file - jpeg (big) - jpeg (small)

MANAGEMENT OF SITES: Integral reserves and restricted zones
(After the II MOMAR and Site Management Workshops, Horta, June 2002 - see documents in Workshop pages)

Lucky Strike An integral reserve has been defined to the NW of the caldera at the summit of Lucky Strike (37° 17.29'-17.40' N ans 32° 17-16.5' W). Restricted access is proposed to the Sintra and Eiffel Tour sites. See Management Workshop documents for details Files pdf file - jpeg (2021 x 1579) - jpeg (1000 x 781)
Menez Gwen An integral reserve has been defined as a transect across the summit of Menez Gwenn. Restricted access is proposed for the PP30-33 sites, on the E flank of Menez Gwen summit.See Management Workshop documents for details Files pdf file - jpeg (1729 x 1267) - jpeg (900 x 660)