2-1 INTERNATIONAL HYDROGRAPHIC ORGANIZATION INTERGOVERNMENTAL OCEANOGRAPHIC COMMISSION (of UNESCO) UNDERSEA FEATURE NAME PROPOSAL (Sea NOTE overleaf) Note: The boxes will expand as you fill the form. Name Proposed: Ocean or Sea: Deschamps Seamount Geometry that best defines the feature (Yes/No) : Point Line Polygon Multiple points Northwest Pacific Ocean Multiple lines* Multiple polygons* Combination of geometries* Yes * Geometry should be clearly distinguished when providing the coordinates below. Lat. (e.g. 63°32.6’N) 15°25.58’N (summit 1) 15°17.28’N 15°23.71’N 15°29.56’N 15°35.07’N 15°35.99’N 15°31.13’N 15°25.85’N 15°16.57’N 15°17.28’N Coordinates: Feature Description: Maximum Depth : Minimum Depth : Total Relief : 6707 m 4065 m 2642 m Associated Features: CBF Rift Chart/Map References: Shown Named on Map/Chart: Shown Unnamed on Map/Chart: Within Area of Map/Chart: Reason for Choice of Name (if a person, state how associated with the feature to be named): Discovery Facts: Supporting Survey Data, including Track Controls: Long. (e.g. 046°21.3’W) 132°25.81’E (summit 1) 132°22.40’E 132°04.84’E 132°05.69’E 132°17.68’E 132°27.11’E 132°37.53’E 132°40.38’E 132°29.82’E 132°22.40’E Steepness : Shape : Dimension/Size : 30km×70 km The seamount is named after late Dr. Anne Deschamps, who extensively studied the teconics of the West Philippine Basin (known as the Philippine Basin in the GEBCO Gazetteer) and its extinct spreading axis, the CBF Rift. See CV for details. Discovery Date: Discoverer (Individual, Ship): 1998 The Japanese research vessel “Kairei” Date of Survey: Survey Ship: Sounding Equipement: May. and Jun. 2001 The Japanese survey vessel “Takuyo” Multibeam echo sounder Seabeam 2112 GPS without Selective Availability 0.014 nm (26 m) 6 nm Type of Navigation: Estimated Horizontal Accuracy (nm): Survey Track Spacing: 2-2 Supporting material can be submitted as Annex in analog or digital form. Name(s): Date: E-mail: Organization and Address: Proposer(s): Concurrer (name, e-mail, organization and address): Dr. Toshiya Fujiwara Sep. 10, 2015 toshi@jamstec.go.jp Japan Agency for Marine-Earth Science and Technology (JAMSTEC) 2-15 Natsushima, Yokosuka 237-0061, Japan Dr. Serge Lallemand Géosciences Montpellier CC. 60, place E. Bataillon 34095 Montpellier cedex 5 E-mail: serge.lallemand@gm.univmontp2.fr Remarks: NOTE : This form should be forwarded, when completed : a) If the undersea feature is located inside the external limit of the territorial sea :to your "National Authority for Approval of Undersea Feature Names" (see page 2-9) or, if this does not exist or is not known, either to the IHB or to the IOC (see addresses below); b) If at least 50 % of the undersea feature is located outside the external limits of the territorial sea :to the IHB or to the IOC, at the following addresses : International Hydrographic Bureau (IHB) 4, Quai Antoine 1er B.P. 445 MC 98011 MONACO CEDEX Principality of MONACO Fax: +377 93 10 81 40 E-mail: info@ihb.mc Intergovernmental Oceanographic Commission (IOC) UNESCO Place de Fontenoy 75700 PARIS France Fax: +33 1 45 68 58 12 E-mail: info@unesco.org 2-3 Personal history of late Dr. Anne Deschamps Given name: Anne Family name: Deschamps 1974 February, Born in Nancy, France 2014 December, Diseased Education 1995 B.Sc., Nancy University 1997 M.Sc., Montpellier University (major in geology) 2001 PhD, Montpellier University, France Professional carrier: 2001 Post-doc at Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Japan 2003 Post-doc at Woods Hole Oceanographic Institution, USA 2005 Researcher at National Center for Scientific Research (CNRS), Marine European University Institute (IUEM), Oceanic Domains Laboratory (LDO), Brest, France Remarks: She has devoted most of her research activities to the understanding of the Philippine Sea Plate from the far west, providing crucial constraints on the Gagua Ridge and Huatung Basin, to the far east in the Mariana Trough and the Izu-Ogasawara-Mariana arc, but her major contribution concerns the tectonic evolution of the West Philippine Basin (known as the Philippine Basin in the GEBCO Gazetteer). She was particularly involved in high-resolution micro-bathymetry and ocean bottom geodesy. List of selected publications: Deschamps, A., C. Grigné, M. Le Saout, S.A. Soule, P. Allemand, B. Van Vliet Lanoe, & F. Floc’h, Morphology and dynamics of inflated subaqueous basaltic lava flows, Geochemistry, Geophysics, Geosystems, 15, doi:10.1002/2014GC005274, 2014. Deschamps A., M. A. Tivey, W. W. Chadwick Jr., & R. W. Embley, Waning magmatic activity along the Southern Explorer Ridge revealed through fault restoration of rift topography, Geochemistry, Geophysics, Geosystems, 14, doi:10.1002/ggge.20110, 2013. Babonneau N., Delacourt C., Cancouet R., Sisavath E., Bachelery P., Mazuel A., Jorry S.J., Deschamps A., Ammann J., & Villeneuve N., Direct sediment transfer from land to deepsea: insights from new shallow-marine multibeam data at La Réunion Island, Marine Geology 346, 47–57, 2013, http://dx.doi.org/10.1016/j.margeo.2013.08.006, 2013. Franzetti M., P. Le Roy, C. Delacourt, T. Garlan, R. Cancouët, A. Sukhovich & A. Deschamps, Sandwave morphologies and dynamics in a continental shelf environment: example of Banc du Four, western Brittany, Marine Geology 346, 17–30, http://dx.doi.org/10.1016/j.margeo.2013.07.014, 2013. Hickey-Vargas, R., Bizimis, M. & Deschamps, A., Onset of the Indian Ocean isotopic signature in the Philippine Sea Plate: Hf and Pb isotope evidence from Early Cretaceous terranes, Earth and Planetary Science Letters, 268, 255-267, 2008. Deschamps A., Shinjo R., Matsumoto T., Lee C.-S., Lallemand S.E., Wu S. & Scientific party of KR03-04 and KR04-14 cruises, Propagators and ridge jumps in a back-arc basin, the West Philippine Basin, Terra Nova, doi: 10.1111/j.1365-3121.2008.00824.x. 2008. Deschamps A., Tivey M., W. Embley & R., W. Chadwick W., Quantitative study of the deformation at the Southern Explorer Ridge using high-resolution bathymetric data. Earth and Planetary Science Letters, 259, 1-17, 2007. Asada M., Deschamps A, Fujiwara T, & Nakamura Y, Submarine lava flow emplacement and faulting in the axial valley of two morphologically distinct spreading segments of the Mariana back-arc basin from Wadatsumi side-scan sonar images, Geochemistry, Geophysics, Geosystems , doi: 10.1029/2006GC001418, 2007. 2-4 Deschamps A., T. Fujiwara, M. Asada, L. Montési, & P. Gente, Faulting and volcanism in the axial valley of the slow spreading center of the Mariana back-arc basin from Wadatsumi side-scan sonar images, Geochemistry, Geophysics, Geosystems, 6, 1, doi : 10.1029/2004GC000881, 2005. Deschamps A. & T. Fujiwara, Asymmetric accretion along the slow spreading Mariana Ridge, Geochemistry, Geophysics, Geosystems, 4, 10, 8622, doi:10.1029/2003GC000537, 2003. Deschamps A. & S. Lallemand, Geodynamic setting of Izu-Bonin-Mariana boninites, in IntraOceanic Subduction Systems: Tectonic and Magmatic Processes, Journal of Geophysical Society, London, Special Publication, 219, 163-185, 2003. Deschamps A. & S. Lallemand, The West Philippine Basin: an Eocene to Early Oligocene back-arc basin opened between two opposed subduction zones, Journal Geophysical Research, 2001JB001706, vol. 107, Dec. 2002. Deschamps A., K. Okino, & K. Fujioka, Late amagmatic extension along the central and eastern segments of the West Philippine Basin fossil spreading axis, Earth Planetary Science Letters, 203, 277-293, 2002. Deschamps A., P. Monié, S. Lallemand, S.-K. Hsu, & K.Y. Yeh, Evidence for Early Cretaceous crust trapped in the Philippine Sea Plate, Earth Planetary Science Letters 179, 3-4, 503-516, 2000. Deschamps A., S. Lallemand, & S. Dominguez, The last spreading episode of the West Philippine Basin revisited, Geophysical Research Letters, vol. 26, n.14, p. 2073, 1999. Deschamps A., S. Lallemand, & J.-Y. Collot, A detailed study of the Gagua Ridge : A Fracture Zone uplifted during a plate reorganization in the Mid-Eocene, Marine Geophysical Researches, 20, 5, 403-423, 1998. 2-5 Fig. 1. Bathymetric map of the Deschamps Seamount. Contours are in 100 m. 2-6 Fig. 2. Bathymetric map of the Deschamps Seamount, showing with track lines. Contours are in 100 m. Fig. 3. Bathymetric profiles across the Deschamps Seamount.