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Researcher
Ph.D., Lamont-Doherty Earth Observatory of Columbia University, 1992
Home Page: http://imina.soest.hawaii.edu/HMRG/facstaff/margo/
Email: margo@soest.hawaii.edu
Office: POST 814B
Phone Number: (808) 956-5232
Fax Number: (808) 956-6530
University of Hawai`i at Manoa
Hawai`i Institute of Geophysics and Planetology
1680 East-West Road, POST 602
Honolulu, HI 96822
USA
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Research Interests:
Marine geology and geophysics, Remote sensing of the seafloor, Mid-Ocean Ridges, Arctic Basin
Current
Projects:
Currently my scientific research is focusing on two projects, mapping the Arctic Basin using a swath bathymetry and sidescan system mounted on the hull of a US Navy nuclear-powered submarine, and using photographic and acoustic data from a variety of platforms to map the East Pacific Rise at very high resolution.
The East Pacific Rise (EPR) project has two principal objectives: (i) to map lava morphology and flow distribution to understand the recent (~30ka) volcanic history of EPR axis and crestal plateau in the region of the 1991 eruption and (ii) to examine the balance between tectonic and magmatic processes on the EPR crestal plateau through the investigation of fracture and fault distribution along and across the axial flank.
The objectives for the Arctic project are much broader largely because the Arctic, with its permanent pack ice cover, has only been sparsely mapped. Goals for this project range from searching for evidence that the Arctic Ocean was once covered by a thick sheet of ice to documenting tectonism and volcanism on the Earth's slowest spreading mid-ocean ridge (Gakkel Ridge) to investigating the correlation between seafloor topography and physical and biogeochemical water properties.
Relevant
Links:
Publications
(partial listing):
Cochran J.R., Edwards M.H., Coakley B.J. (2006) Morphology and structure of the Lomonosov Ridge, Arctic Ocean. G-cubed, in press.
Edwards M.H. and Coakley B.J. (2003) SCICEX Investigations of the Arctic Ocean System. Chemie der Erde, in press 2003.
Cochran J.R., Kurras G.J., Edwards M.H., Coakle B.J. (2003) The Gakkel Ridge: Bathymetry, gravity anomalies, and crustal accretion at extremely slow spreading rates. J. Geophys. Res., in press.
Edwards M.H., Johnson P.D., Appelgate T.B., Kurras G.J. (2001) On-line access to new Arctic bathymetry and sidescan data. Oceans (IEEE) Proceedings.
Kurras G.J., Edwards M.H., Michael P., Cochran J.R., and Coakley B.J. (2001) Comparison of Seabeam 2112 and SCAMP bathymetry data along the Gakkel Ridge: Preliminary mapping results from the Healy0102 Arctic Cruise. Oceans (IEEE) Proceedings.
Davis R.B., Edwards M.H., Rognstad M.R., Appelgate T.B., and Chayes D.N. (2001) New tools for processing sidescan and interferometric bathymetry data. Sea Technology.
Edwards M.H., Kurras G.J., Tolstoy M., Bohnenstiehl D., Coakley B.J., and Cochran J.R. (2000) Evidence of recent volcanic activity on the ultra-slow apreading Gakkel Ridge. Nature.
Kurras G.J., Fornari D.J., Edwards M.H., Perfit M.R., and Smith M.C. (1999) Volcanic morphology of the East Pacific Rise Crest 9° 49'-52' N: Implications for volcanic emplacement processes at fast-spreading mid-ocean ridges. Marine Geophys. Res.
Kurras G.J., Edwards M.H., Fonari D.J. (1998) High-resolution bathymetry of the East Pacific Rise axial summit trough 9(49'-51'N: A compilation of Alvin scanning sonar and altimetry data from 1991-1995. Geophys. Res. Lett.
Fornari D.J., Hayman R.M., Perfit M.R., Gregg T.K.P. and Edwards M.H. (1998) Axial summit trough of the East Pacific Rise 9(N to 10(N: Geological characteristics and evolution of the axial zone on fast-spreading mid-ocean ridges. J. Geophys. Res.-Solid Earth.
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