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5/16/05 ABYSS-Lite Decadal Survey Concept 1 ABYSS-Lite: A radar altimeter for bathymetry, geodesy and mesoscale oceanography A mission concept submitted to the NRC Decadal Survey Authored by: Smith Walter NOAA [email protected] Raney Keith Johns Hopkins Univ., MD [email protected] Sandwell David Scripps institution of Oceanography, UCSD [email protected] Anglin Lyn Geological Survey of Canada's Pacific Division [email protected] Andersen Ole Danish Space Center [email protected] Andreasen Chris NGA Office of Global Navigation [email protected] Arbic Brian Princeton University and NOAA GFDL [email protected] Blackman Donna Scripps Institution of Oceanography, UCSD [email protected] Camarda Tom National Geospatial Intelligence Agency [email protected] Cande Steve Scripps Institution of Oceanography, UCSD [email protected] Carron Michael NATO Undersea Research Center [email protected] Cazenave Anny CNES [email protected] Christie David Oregon State University [email protected] Coakley Bernie Univ. of Alaska, Fairbanks [email protected] Cochran James Lamont Doherty Earth Observatory [email protected] Douglas Bruce University of Maryland [email protected] Drinkwater Mark European Space Agency Earth Observation [email protected] Driscoll Mavis Northrop Grumman Corporation [email protected] Eakins Barry USGS, Menlo Park, CA [email protected] Egbert Gary Oregon State University, Corvallis, OR [email protected] Emery Bill University of Colorado [email protected] Factor John National Geospatial Intelligence Agency [email protected] Falconer Robin NZ Institute for Geological & Nuclear Sciences [email protected] Forsyth Donald Brown University [email protected] Friederich Jim National Geospatial Intelligence Agency [email protected] Geli Louis IFREMER [email protected] Gille Sarah UCSD [email protected] Godin Ray Integrated Program Office [email protected] Goff John Univ. of Texas, Austin, TX [email protected] Gonzalez Frank NOAA PMEL Tsunami group [email protected] Hensel Jerry Chevron/Texaco [email protected] Hunter Peter Southampton Oceanography Centre [email protected] Jacobs Gregg Naval Research Laboratory [email protected] Jakobsson Martin Stockholm University [email protected] Jayne Steve Woods Hole Oceanographic Inst., MA [email protected] Jensen Bob Johns Hopkins Univ., MD [email protected] 5/16/05 ABYSS-Lite Decadal Survey Concept 2 Kappel Ellen Geosciences Professional Services, MD [email protected] Karner Garry LDEO Columbia University [email protected] Kenyon Steve National Geospatial Intelligence Agency [email protected] Kruse Sarah University of South Florida [email protected] Kunze Eric Univ. of Victoria SEOS [email protected] Lillibridge John NOAA Lab for Satellite Altimetry [email protected] Llewellyn-Smith Stefan Mechanical and Aerospace Engineering, UCSD [email protected] Lonsdale Peter Scripps Institution of Oceanography, UCSD [email protected] Luther Doug Univ. of Hawaii, Honolulu [email protected] Mariano John Exxon-Mobil [email protected] Marks Karen NOAA Lab for Satellite Altimetry [email protected] Massell-Symons Christina Geological Data Center, UCSD [email protected] May Marvin Navigation R & D Center, Penn State Univ [email protected] Mayer Larry UNH Center for Coastal & Ocean Mapping [email protected] McGuire James Integrated Program Office [email protected] McNutt Marcia Monterey Bay Aquarium Research Institute [email protected] Metzger Joseph Naval Research Laboratory [email protected] Miller Stephen P. Scripps Institution of Oceanography, UCSD [email protected] Mitchell Roger Earth Satellite Corporation [email protected] Mitchum Gary University of South Florida, St. Petersburg [email protected] Mofjeld Harold NOAA PMEL Tsunami group [email protected] Monahan Dave Chairman, IHO-IOC GEBCO [email protected] Munk Walter Scripps Institution of Oceanography, UCSD [email protected] Naar David Univ. of South Florida [email protected] Nerem Steve University of Colorado Aerospace Engineering [email protected] Neumann Gregory Goddard Space Flight Center, NASA [email protected] O’Loughlin Michael National Geospatial Intelligence Agency [email protected] Orcutt John Scripps Institution of Oceanography, UCSD [email protected] Oswald John National Geospatial Intelligence Agency [email protected] Pavlis Nikolaos Raytheon ITSS Corporation [email protected] Phipps Morgan Jason Cornell University [email protected] Polzin Kurt WHOI [email protected] Porter David L. Johns Hopkins Univ., MD [email protected] Rankin William Naval Oceanographic Office [email protected] Ray Richard Goddard Space Flight Center, NASA [email protected] Rodriguez Ernesto Jet Propulsion Laboratory, NASA [email protected] Ruder Michal Wintermoon Geotechnologies, Inc. [email protected] Ryan Bill Lamont Doherty Earth Observatory [email protected] Salman Richard National Geospatial Intelligence Agency [email protected] Sawyer Dale Rice Univ., Houston, TX [email protected] Schenke Hans-Werner Alfred Wegner Institute [email protected] Schrama Ejo Delft Technical University [email protected] Sharman George NOAA [email protected] 5/16/05 ABYSS-Lite Decadal Survey Concept 3 Shum C.K. Ohio State University, OH [email protected] Simmons Harper International Arctic Research Center [email protected] Small Chris Lamont Dohergy Earth Observatory [email protected] Soofi Khalid Conoco [email protected] St.Laurent Lou Florida State University, Tallahassee [email protected] Stammer Detlef Inst for Meereskunde, Hamburg [email protected] Talwani Manik Rice Univ., Houston, TX [email protected] Thurnheer Andreas Dept. of Oceanography, FL State Univ. [email protected] Titov Vasily NOAA PMEL Tsunami group [email protected] Tokmakian Robin Naval Postgraduate School, Monterey [email protected] Toohey Joseph National Geospatial Intelligence Agency [email protected] Trimmer Ron National Geospatial Intelligence Agency [email protected] True Scott National Geospatial Intelligence Agency [email protected] Watts Anthony Oxford University [email protected] Weatherall Pauline British Oceanographic Data Centre [email protected] Wessel Paul Univ. of Hawaii, Honolulu, HI [email protected] Wingham Duncan University College London [email protected] Young Bill Scripps Institution of Oceanography, UCSD [email protected] Zlotnicki Victor Jet Propulsion Laboratory, NASA [email protected] Zumberge Mark Scripps Institution of Oceanography, UCSD [email protected] Acknowledgements and Additional Supporting Materials: This mission concept has matured through its development as a NASA ESSP-3 proposal (“ABYSS: Altimetric Bathymetry from Surface Slopes”), in a NASA/NOAA/NSF funded workshop in 2002 (http://www.igpp.ucsd.edu/bathymetry_workshop), Navy workshops in 2003 and 2005, and articles in the 2004 “Bathymetry from Space” issue of Oceanography (http://www.tos.org/oceanography/issues/issue_archive/17_1.html). The concept presented here arranges these previously vetted materials to fit the NRC Decadal Survey outline. A website (http://topex.ucsd.edu/concept) holds additional supporting materials, including animated demonstrations of the effect of bathymetry in tsunami propagation and of the recovery of mesoscale eddies from a non-repeat orbit. Further discussion of the mission concept, resolving power, and applications to tsunami and seismic hazard, ocean circulation, ocean mixing, climate modeling, and the UN Law of the Sea can be found in peer-reviewed articles in Oceanography volume 17, number 1 (http://www.tos.org/oceanography/issues/issue_archive/17_1.html). Disclaimer The views, opinions and findings contained in this document are those of the authors and should not be construed as an official U.S. Government position, policy or decision. Co- authors of this report who are employees of U.S. federal agencies are acting in their capacities as scientific experts contributing to a science mission concept; they are not acting as advocates of U.S Government position, policy, or decision. Fact Sheet Abyss-Lite* An altimeter for geodesy and mesoscale oceanography Method • Radar measurement of sea surface slope reveals gravity anomalies & ocean flows Themes • The fine-scale (200-km to 5-km) ocean shape yields bathymetry, gravity anomalies, and deflections of the vertical (VD) unavailable by other means • The non-repeat orbit monitors ocean currents and eddies unseen by other missions Complements Related Missions • GRACE, Champ and GOCE sense gravity at orbital altitude, where resolution is limited to ~200 km; Abyss-Lite measures gravity at sea level, where resolution down to ~ 5 km is available. •Abyss-Lite’s drifting orbit fills holes in the exact-repeat orbits covered by TOPEX/Poseidon, GFO, Envisat, and Jason-1, enabling fine-scale geodesy and detailed recovery of mesoscale eddies. Implementation • ~800-km orbit, inclination ~120˚ (preferred) or ~60˚, non-repeat, ~22-day near-repeat, 6-y mission, small s/c • Delay-Doppler radar altimeter w/ on-board processing for fine measurement precision, near-shore tracking, resistance to “wave noise” •Low data rate; one ground station Science • Ocean bottom shape and roughness control tsunami propagation, steering of A new Bathymetry from Space
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