Now showing items 675-694 of 1091

    • North Atlantic forcing of tropical Indian Ocean climate 

      Mohtadi, Mahyar; Prange, Matthias; Oppo, Delia W.; De Pol-Holz, Ricardo; Merkel, Ute; Zhang, Xiao; Steinke, Stephan; Luckge, Andreas (2014-02)
      The response of the tropical climate in the Indian Ocean realm to abrupt climate change events in the North Atlantic Ocean is contentious. Repositioning of the intertropical convergence zone is thought to have been responsible ...
    • The North Pacific Acoustic Laboratory deep-water acoustic propagation experiments in the Philippine Sea 

      Worcester, Peter F.; Dzieciuch, Matthew A.; Mercer, James A.; Andrew, Rex K.; Dushaw, Brian D.; Baggeroer, Arthur B.; Heaney, Kevin D.; D'Spain, Gerald L.; Colosi, John A.; Stephen, Ralph A.; Kemp, John N.; Howe, Bruce M.; Van Uffelen, Lora J.; Wage, Kathleen E. (Acoustical Society of America, 2013-10)
      A series of experiments conducted in the Philippine Sea during 2009–2011 investigated deep-water acoustic propagation and ambient noise in this oceanographically and geologically complex region: (i) the 2009 North Pacific ...
    • Notes for Geoacoustic_TDFD 

      Stephen, Ralph A.; Bolmer, S. Thompson (Woods Hole Oceanographic Institution, 2006-02)
      These notes were written to help users run the WHOI TDFD (Time Domain Finite Difference) elastic wave equation code that was prepared for distribution through the ONR Ocean Acoustics Library (http://www.hlsresearch.com/oalib/). ...
    • A novel salinity proxy based on Na incorporation into foraminiferal calcite 

      Wit, Johannes C.; de Nooijer, L. J.; Wolthers, M.; Reichart, Gert-Jan (Copernicus Publications on behalf of the European Geosciences Union, 2013-10-09)
      Salinity and temperature determine seawater density, and differences in both thereby control global thermohaline circulation. Whereas numerous proxies have been calibrated and applied to reconstruct temperature, a direct ...
    • NPAL04 OBS data analysis part 1 : kinematics of deep seafloor arrivals 

      Stephen, Ralph A.; Bolmer, S. Thompson; Udovydchenkov, Ilya A.; Worcester, Peter F.; Dzieciuch, Matthew A.; Van Uffelen, Lora J.; Mercer, James A.; Andrew, Rex K.; Buck, Linda J.; Colosi, John A.; Howe, Bruce M. (Woods Hole Oceanographic Institution, 2008-12)
      These notes provide supporting information for a JASA (Journal of the Acoustical Society of America) LttE (Letter to the Editor) manuscript, "Deep seafloor arrivals: A new class of arrivals in long-range ocean acoustic ...
    • Numerical simulations on megathrust rupture stabilized under strong dilatancy strengthening in slow slip region 

      Liu, Yajing (John Wiley & Sons, 2013-04-15)
      Episodic slow slip events (SSEs) typically involve a few millimeters to centimeters of slip over several days to months at depths near or further downdip of megathrust seismogenic zones. Despite its widespread presence in ...
    • The oblique seismic experiment in oceanic crust 

      Stephen, Ralph A. (1978-05)
      The Oblique Seismic Experiment (OSE} is proposed to increase the usefulness of the IPOD crustal borehole as a means of investigating layer 2 of oceanic crust. Specific objectives are: to determine the lateral. extent ...
    • Obliquity pacing of the late Pleistocene glacial terminations 

      Huybers, Peter; Wunsch, Carl (2005-01-24)
      The timing of glacial/interglacial cycles at intervals of about 100,000 yr (100 kyr) is commonly attributed to control by Earth orbital configuration variations. This “pacemaker” hypothesis has inspired many models, variously ...
    • OBSANP data acquisition system : operator's manual and system overview 

      McPeak, Sean P.; D'Spain, Gerald L.; Stephen, Ralph A.; von der Heydt, Keith; Worcester, Peter F. (Woods Hole Oceanographic Institution, 2013-10)
      On the Ocean Bottom Seismometer Augmentation in the North Pacific Experiment (OBSANP, June-July, 2013, R/V Melville), a VLA and twelve OBSs were deployed to listen to an active acoustic source, a J15-3. This report ...
    • OBSAPS data acquisition system : operator's manual and system overview 

      McPeak, Sean P.; D'Spain, Gerald L.; Stephen, Ralph A. (Woods Hole Oceanographic Institution, 2011-05)
      On the Ocean Bottom Seismometer Augmentation to the Philippine Sea Experiment (OBSAPS, April-May, 2011, R/V Revelle), a VLA and six OBSs were deployed to listen to an active acoustic source, a J15-3. This report describes ...
    • Observational and theoretical studies of the dynamics of mantle plume–mid-ocean ridge interaction 

      Ito, Garrett T.; Lin, Jian; Graham, David W. (American Geophysical Union, 2003-11-20)
      Hot spot–mid-ocean ridge interactions cause many of the largest structural and chemical anomalies in Earth's ocean basins. Correlated geophysical and geochemical anomalies are widely explained by mantle plumes that deliver ...
    • Observations of Li isotopic variations in the Trinity Ophiolite : evidence for isotopic fractionation by diffusion during mantle melting 

      Lundstrom, Craig C.; Chaussidon, Marc; Hsui, Albert T.; Kelemen, Peter B.; Zimmerman, Mark (2004-08-10)
      The Trinity peridotite (northern CA) contains numerous lithologic sequences consisting of dunite to harzburgite to spinel lherzolite to plagioclase lherzolite. Previous workers have documented geochemical gradients in these ...
    • Observed and modeled Greenland ice sheet snow accumulation, 1958-2003, and links with regional climate forcing 

      Hanna, Edward; McConnell, Joseph R.; Das, Sarah B.; Cappelen, John; Stephens, Ag (American Meteorological Society, 2006-02-01)
      Annual and monthly snow accumulation for the Greenland Ice Sheet was derived from ECMWF forecasts [mainly 40-yr ECMWR Re-Analysis (ERA-40)] and further meteorological modeling. Modeled accumulation was validated using 58 ...
    • Observing the Galápagos–EUC interaction : insights and challenges 

      Karnauskas, Kristopher B.; Murtugudde, Raghu; Busalacchi, Antonio J. (American Meteorological Society, 2010-12)
      Although sustained observations yield a description of the mean equatorial current system from the western Pacific to the eastern terminus of the Tropical Atmosphere Ocean (TAO) array, a comprehensive observational dataset ...
    • Ocean acidification not likely to affect the survival and fitness of two temperate benthic foraminiferal species : results from culture experiments 

      McIntyre-Wressnig, Anna; Bernhard, Joan M.; Wit, Johannes C.; McCorkle, Daniel C. (2014-10)
      Specimens of Bolivina argentea and Bulimina marginata, two widely distributed temperate benthic foraminiferal species, were cultured at constant temperature and controlled pCO2 (ambient, 1000 ppmv, and 2000 ppmv) for six ...
    • Ocean bottom seismic scattering 

      Dougherty, Martin E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1989-08)
      Seismic studies of the oceanic crust, both experimental and theoretical, often assume a flat seafloor and laterally homogeneous crust. This is done regardless of the appearance in seismic data of obvious effects due to ...
    • Ocean Bottom Seismometer Augmentation in the North Pacific (OBSANP) - cruise report 

      Stephen, Ralph A.; Worcester, Peter F.; Udovydchenkov, Ilya A.; Aaron, Ernie; Bolmer, S. Thompson; Carey, Scott; McPeak, Sean P.; Swift, Stephen A.; Dzieciuch, Matthew A. (Woods Hole Oceanographic Institution, 2014-12)
      The Ocean Bottom Seismometer Augmentation in the North Pacific Experiment (OBSANP, June-July, 2013, R/V Melville) addresses the coherence and depth dependence of deep-water ambient noise and signals. During the 2004 NPAL ...
    • Ocean Bottom Seismometer Augmentation of the Philippine Sea Experiment (OBSAPS) cruise report 

      Stephen, Ralph A.; Kemp, John N.; McPeak, Sean P.; Bolmer, S. Thompson; Carey, Scott; Aaron, Ernie; Campbell, Richard L.; Moskovitz, Brianne; Calderwood, John; Cohen, Ben; Worcester, Peter F.; Dzieciuch, Matthew A. (Woods Hole Oceanographic Institution, 2011-09)
      The Ocean Bottom Seismometer Augmentation to the Philippine Sea Experiment (OBSAPS, April-May, 2011, R/V Revelle) addresses the coherence and depth dependence of deep-water ambient noise and signals. During the 2004 NPAL ...
    • Ocean climate variability in the eastern North Atlantic during interglacial marine isotope stage 11 : a partial analogue to the Holocene? 

      de Abreu, Lucia; Abrantes, Fatima G.; Shackleton, Nicholas J.; Tzedakis, Polychronis C.; McManus, Jerry F.; Oppo, Delia W.; Hall, Michael A. (American Geophysical Union, 2005-08-30)
      Similar orbital geometry and greenhouse gas concentrations during marine isotope stage 11 (MIS 11) and the Holocene make stage 11 perhaps the best geological analogue period for the natural development of the present ...
    • Ocean rises are products of variable mantle composition, temperature and focused melting 

      Dick, Henry J. B.; Zhou, Huaiyang (2014-12)
      Ocean ridges, where Earth’s tectonic plates are pulled apart, vary from more than 5- km depth in the Arctic to 750 m above sea level in Iceland. This huge relief is generally attributed to mantle plumes underlying mantle ...