Now showing items 1981-2000 of 7667

    • Early Pliocene increase in thermohaline overturning : a precondition for the development of the modern equatorial Pacific cold tongue 

      Steph, Silke; Tiedemann, Ralf; Prange, Matthias; Groeneveld, Jeroen; Schulz, Michael; Timmermann, Axel; Nurnberg, Dirk; Ruhlemann, Carsten; Saukel, Cornelia; Haug, Gerald H. (American Geophysical Union, 2010-04-15)
      Unraveling the processes responsible for Earth's climate transition from an “El Niño–like state” during the warm early Pliocene into a modern-like “La Niña–dominated state” currently challenges the scientific community. ...
    • Early season depletion of dissolved iron in the Ross Sea polynya : implications for iron dynamics on the Antarctic continental shelf 

      Sedwick, Peter N.; Marsay, Christopher M.; Sohst, Bettina M.; Aguilar-Islas, Ana M.; Lohan, M. C.; Long, Matthew C.; Arrigo, Kevin R.; Dunbar, Robert B.; Saito, Mak A.; Smith, Walker O.; DiTullio, Giacomo R. (American Geophysical Union, 2011-12-15)
      The Ross Sea polynya is among the most productive regions in the Southern Ocean and may constitute a significant oceanic CO2 sink. Based on results from several field studies, this region has been considered seasonally ...
    • Earthquake behavior and structure of oceanic transform faults 

      Roland, Emily C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2012-02)
      Oceanic transform faults that accommodate strain at mid-ocean ridge offsets represent a unique environment for studying fault mechanics. Here, I use seismic observations and models to explore how fault structure affects ...
    • Earthquake scaling relations for mid-ocean ridge transform faults 

      Boettcher, Margaret S.; Jordan, T. H. (American Geophysical Union, 2004-12-09)
      A mid-ocean ridge transform fault (RTF) of length L, slip rate V, and moment release rate dot above M can be characterized by a seismic coupling coefficient χ = A E/A T, where A E ∼ dot above M/V is an effective seismic ...
    • Earthquake swarms driven by aseismic creep in the Salton Trough, California 

      Lohman, Rowena B.; McGuire, Jeffrey J. (American Geophysical Union, 2007-04-10)
      In late August 2005, a swarm of more than a thousand earthquakes between magnitudes 1 and 5.1 occurred at the Obsidian Buttes, near the southern San Andreas Fault. This swarm provides the best opportunity to date to assess ...
    • Earthquake swarms on transform faults 

      Roland, Emily C.; McGuire, Jeffrey J. (John Wiley & Sons, 2009-06-04)
      Swarm-like earthquake sequences are commonly observed in a diverse range of geological settings including volcanic and geothermal regions as well as along transform plate boundaries. They typically lack a clear mainshock, ...
    • The East Greenland Coastal Current : its structure variability, and large-scale impact 

      Sutherland, David A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-02)
      The subtidal circulation of the southeast Greenland shelf is described using a set of highresolution hydrographic and velocity transects occupied in summer 2004. The main feature present is the East Greenland Coastal ...
    • The East Greenland Coastal Current : structure, variability, and forcing 

      Sutherland, David A.; Pickart, Robert S. (2008-03-12)
      The subtidal circulation of the southeast Greenland shelf is described using a set of high-resolution hydrographic and velocity transects occupied in summer 2004. The main feature is the East Greenland Coastal Current ...
    • The East Greenland Spill Jet 

      Pickart, Robert S.; Torres, Daniel J.; Fratantoni, Paula S. (American Meteorological Society, 2005-06)
      High-resolution hydrographic and velocity measurements across the East Greenland shelf break south of Denmark Strait have revealed an intense, narrow current banked against the upper continental slope. This is believed to ...
    • The East Greenland Spill Jet as an important component of the Atlantic Meridional Overturning Circulation 

      von Appen, Wilken-Jon; Koszalka, Inga M.; Pickart, Robert S.; Haine, Thomas W. N.; Mastropole, Dana; Magaldi, Marcello G.; Valdimarsson, Heoinn; Girton, James B.; Jochumsen, Kerstin; Krahmann, Gerd (2014-06-03)
      The recently discovered East Greenland Spill Jet is a bottom-intensified current on the upper continental slope south of Denmark Strait, transporting intermediate density water equatorward. Until now the Spill Jet has ...
    • The Eastern African Coastal Management Database 

      Banze, Jorge (IAMSLIC, 2000)
    • Eastern European Regional Review discussion session 

      Kalenchits, Maria (IAMSLIC, 2002)
    • Eastern Pacific Warm Pool paleosalinity and climate variability : 0–30 kyr 

      Benway, Heather M.; Mix, Alan C.; Haley, Brian A.; Klinkhammer, Gary P. (American Geophysical Union, 2006-08-16)
      Multi-proxy geologic records of δ18O and Mg/Ca in fossil foraminifera from sediments under the Eastern Pacific Warm Pool (EPWP) region west of Central America document variations in upper ocean temperature, pycnocline ...
    • Eastern tropical Pacific hydrologic changes during the past 27,000 years from D/H ratios in alkenones 

      Pahnke, Katharina; Sachs, Julian P.; Keigwin, Lloyd D.; Timmermann, Axel; Xie, Shang-Ping (American Geophysical Union, 2007-12-18)
      The tropical Pacific plays a central role in the climate system by providing large diabatic heating that drives the global atmospheric circulation. Quantifying the role of the tropics in late Pleistocene climate change has ...
    • Eastern Tropical South Pacific Nitrogen fixation 

      Knapp, Angela; Casciotti, Karen L.; Berelson, William M.; Prokopenko, Maria; Capone, Douglas (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2015-04-16)
      An extensive region of the Eastern Tropical South Pacific (ETSP) Ocean has surface waters that are nitrate-poor yet phosphate-rich. It has been proposed that this distribution of surface nutrients provides a geochemical ...
    • Echo statistics of individual and aggregations of scatterers in the water column of a random, oceanic waveguide 

      Jones, Benjamin A.; Colosi, John A.; Stanton, Timothy K. (Acoustical Society of America, 2014-07)
      The relative contributions of various physical factors to producing non-Rayleigh distributions of echo magnitudes in a waveguide are examined. Factors that are considered include (1) a stochastic, range-dependent sound-speed ...
    • Echolocation clicks of free-ranging Cuvier's beaked whales (Ziphius cavirostris) 

      Zimmer, Walter M. X.; Johnson, Mark P.; Madsen, Peter T.; Tyack, Peter L. (Acoustical Society of America, 2005-06)
      Strandings of beaked whales of the genera Ziphius and Mesoplodon have been reported to occur in conjunction with naval sonar use. Detection of the sounds from these elusive whales could reduce the risk of exposure, but ...
    • Echolocation-based foraging by harbor porpoises and sperm whales, including effects of noise and acoustic propagation 

      DeRuiter, Stacy L. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-09)
      In this thesis, I provide quantitative descriptions of toothed whale echolocation and foraging behavior, including assessment of the effects of noise on foraging behavior and the potential influence of ocean acoustic ...
    • Ecological characteristics of core-use areas used by Bering–Chukchi–Beaufort (BCB) bowhead whales, 2006–2012 

      Citta, John J.; Quakenbush, Lori T.; Okkonen, Stephen R.; Druckenmiller, Matthew L.; Maslowski, Wieslaw; Clement-Kinney, Jaclyn L.; George, John C.; Brower, Harry; Small, Robert J.; Ashjian, Carin J.; Harwood, Lois A.; Heide-Jørgensen, Mads Peter (Elsevier, 2015-09-10)
      The Bering–Chukchi–Beaufort (BCB) population of bowhead whales (Balaena mysticetus) ranges across the seasonally ice-covered waters of the Bering, Chukchi, and Beaufort seas. We used locations from 54 bowhead whales, ...
    • Ecological constraints on planktonic nitrogen fixation in saline estuaries. I. Nutrient and trophic controls 

      Marino, Roxanne; Chan, Francis; Howarth, Robert W.; Pace, Michael L.; Likens, Gene E. (Inter-Research, 2006-03-15)
      Heterocystous, planktonic cyanobacteria capable of fixing atmospheric N2 into available nitrogen (N) are common and critically important to nutrient cycling in many lakes, yet they are rarely observed in estuaries at ...