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Browsing Geology and Geophysics (G&G) by Title

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Browsing Geology and Geophysics (G&G) by Title

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  • Konter, Jasper G.; Staudigel, Hubert; Hart, Stanley R.; Shearer, P. M. (American Geophysical Union, 2004-06-26)
    We deployed five ocean bottom hydrophones (OBHs) for a 1-year seismic monitoring study of Vailulu'u Seamount, the youngest and easternmost volcano in the Samoan Archipelago. Four instruments were placed on the summit crater ...
  • Padman, Laurie; Costa, Daniel P.; Bolmer, S. Thompson; Goebel, Michael E.; Huckstadt, Luis A.; Jenkins, Adrian; McDonald, Birgitte I.; Shoosmith, Deborah R. (American Geophysical Union, 2010-11-03)
    We demonstrate the first use of marine mammal dive-depth data to improve maps of bathymetry in poorly sampled regions of the continental shelf. A group of 57 instrumented elephant seals made on the order of 2 × 105 dives ...
  • Aubry, Marie-Pierre (2008-05-27)
    Smaller size is generally seen as a negative response of organisms to stressful environmental conditions, associated with low diversity and species dominance. The mean size of the coccolithophorids decreased through the ...
  • Collins, John A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1988-10-06)
    The results of numerous seismic refraction and reflection experiments have shown that the seismic structure of the oceanic crust can be usefully parameterized by a small number of locally horizontal layers within which ...
  • Bhatia, Maya P.; Das, Sarah B.; Kujawinski, Elizabeth B.; Henderson, Paul B.; Burke, Andrea; Charette, Matthew A. (International Glaciological Society, 2011-10-01)
    The Greenland ice sheet (GrIS) subglacial hydrological system may undergo a seasonal evolution, with significant geophysical and biogeochemical implications. We present results from a new isotope-mixing model to quantify ...
  • Keigwin, Lloyd D.; Bice, Marley; Copley, Nancy J. (American Geophysical Union, 2005-07-18)
    Monthly samples of stratified plankton tows taken from the slope waters off Cape Cod nearly 25 years ago are used to describe the seasonal succession of planktonic foraminifera and their oxygen isotope ratios. The 15°C ...
  • Dahl, Kristina A.; Oppo, Delia W. (American Geophysical Union, 2006-03-28)
    Sea surface temperature (SST) and seawater δ18O (δ18Ow) were reconstructed in a suite of sediment cores from throughout the Arabian Sea for four distinct time intervals (0 ka, 8 ka, 15 ka, and 20 ka) with the aim of ...
  • Oppo, Delia W.; Schmidt, Gavin A.; LeGrande, Allegra N. (American Geophysical Union, 2007-07-03)
    Paleoceanographic data from the low latitude Pacific Ocean provides evidence of changes in the freshwater budget and redistribution of freshwater within the basin during the Holocene. Reconstructed Holocene seawater δ 18O ...
  • Curry, William B.; Marchitto, Thomas M. (American Geophysical Union, 2008-04-04)
    An evaluation of C. pachyderma Mg/Ca using a new suite of warm water multicores from the Florida Straits shows that the slope of Mg/Ca with temperature is shallower than previously thought. Using secondary ionization mass ...
  • Scileppi, Elyse; Donnelly, Jeffrey P. (American Geophysical Union, 2007-06-21)
    Evidence of historical landfalling hurricanes and prehistoric storms has been recovered from backbarrier environments in the New York City area. Overwash deposits correlate with landfalls of the most intense documented ...
  • MacIlvaine, Joseph Chad (Woods Hole Oceanographic Institution, 1973-09)
    A detailed study of a small (5000 km2) area of the continental slope south of Cape Cod, Massachusetts, was conducted. Bathymetry, 3.5 kHz profiles, seismic profiles, suspended sediment analysis, bottom photographs, television ...
  • Aubrey, David G.; McSherry, T. R.; Spencer, Wayne D. (Woods Hole Oceanographic Institution, 1991-07)
    Repeated side-scan sonar and multi-frequency bathymetric surveys, accompanied by accurate, high resolution, and repeatable navigation, were conducted in the vicinity of a tidal inlet to define the length and time scales ...
  • Munoz, Araceli; Cristobo, J.; Rios, P.; Druet, M.; Polonio, V.; Uchupi, Elazar; Acosta, Juan; Iglesias, S.; Portela, J.; del Rio, J. L.; Parra, S.; Sacau, M.; Vilela, R.; Patrocinio, T.; Almon, B.; Elvira, E.; Jimenez, P.; Fontan, A.; Alcala, C.; Lopez, V. (2012-05)
    The north flowing Falkland / Malvinas Current has generated sediment drifts at a depth of 1200-1600 m in the Patagonian middle continental slope out of early Holocene hemipelagics, late Pleistocene ice rafted clastics, and ...
  • Tucholke, Brian E.; Lin, Jian; Kleinrock, Martin C.; Tivey, Maurice A.; Reed, Thomas B.; Goff, John A.; Jaroslow, Gary E. (American Geophysical Union, 1997-05-10)
    We conducted a detailed geological-geophysical survey of the west flank of the Mid-Atlantic Ridge between 25°25′N and 27°10′N and from the ridge axis out to 29 Ma crust, acquiring Hydrosweep multibeam bathymetry, HAWAII ...
  • Stephen, Ralph A.; Pettigrew, Tom; Petitt, Robert A. (Woods Hole Oceanographic Institution, 2006-05)
    The goal of SeisCORKs is to make simultaneous and co-located seismic, pressure, temperature, pore water chemistry and pore water biology measurements in the seafloor. We want to see the small events in the vicinity of ...
  • Collins, John A.; Blackman, Donna K.; Harris, Amber C.; Carlson, Richard L. (American Geophysical Union, 2009-01-31)
    The seismic structure of the upper ∼1 km of the central dome of Atlantis Massif is investigated in the context of lithologies known from seafloor drilling and physical property measurements obtained within the borehole and ...
  • Van Ark, Emily M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2007-06)
    This thesis presents three studies which apply geophysical tools to the task of better understanding mantle melting phenomena at the upper and lower boundaries of the mantle. The first study uses seafloor bathymetry and ...
  • Hussenoeder, Stefan A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-09)
    The upper ocean crust contains a comprehensive record of the shallow geological processes active along the world's mid-ocean ridge system. This thesis examines the magnetic and seismic structure of the upper crust at two ...
  • Wilcock, William S. D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1992-06)
    Studies of seismic propagation through oceanic crust have contributed enormously to our understanding of the generation and evolution of oceanic crust However, such work has largely been confined to the seismic velocity ...
  • Christeson, Gail L. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1994-02)
    This thesis is concerned with understanding how oceanic crust is emplaced at mid-ocean ridges. The emphasis is upon fast-spreading ridges, and the use of seismic techniques to image the uppermost several hundred meters ...

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