Now showing items 1337-1356 of 6329

    • The design of an instrument to measure vertically averaged oceanic currents using geomagnetic electric fields 

      Poranski, Peter Frank (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1972-08)
      A bottom mounted electromagnetic current meter measures the vertically-averaged conductivity-weighted velocity. This measurement complements free-fall relative velocity profiles and is valuable for transport determination ...
    • Design study for a moored surface-scanning sonar 

      Freitag, Lee E.; Plueddemann, Albert J.; Merriam, Steve (Woods Hole Oceanographic Institution, 1993-06)
      This report contains the results of a design study for a surface scanning sonar instrument capable of long-term deployment on ocean moorings. The instrument is intended to sample the bubble field just below the ocean's ...
    • Designing a solution to enable agency-academic scientific collaboration for disasters 

      Mease, Lindley A.; Gibbs-Plessl, Theodora; Erickson, Ashley L.; Ludwig, Kristin A.; Reddy, Christopher M.; Lubchenco, Jane (Ecology and Society, 2017-06)
      As large-scale environmental disasters become increasingly frequent and more severe globally, people and organizations that prepare for and respond to these crises need efficient and effective ways to integrate sound science ...
    • Desmophyllum dianthus (Esper, 1794) in the scleractinian phylogeny and its intraspecific diversity 

      Addamo, Anna M.; Reimer, James D.; Taviani, Marco; Freiwald, Andre; Machordom, Annie (Public Library of Science, 2012-11-28)
      The cosmopolitan solitary deep-water scleractinian coral Desmophyllum dianthus (Esper, 1794) was selected as a representative model species of the polyphyletic Caryophylliidae family to (1) examine phylogenetic relationships ...
    • Detachment shear zone of the Atlantis Massif core complex, Mid-Atlantic Ridge, 30°N 

      Karson, Jeffrey A.; Fruh-Green, Gretchen L.; Kelley, Deborah S.; Williams, E. A.; Yoerger, Dana R.; Jakuba, Michael V. (American Geophysical Union, 2006-06-21)
      Near-bottom investigations of the cross section of the Atlantis Massif exposed in a major tectonic escarpment provide an unprecedented view of the internal structure of the footwall domain of this oceanic core complex. ...
    • A detailed geochemical study of island arc crust : the Talkeetna Arc section, south–central Alaska 

      Greene, Andrew R.; Debari, Susan M.; Kelemen, Peter B.; Blusztajn, Jerzy S.; Clift, Peter D. (2005-12-23)
      The Early to Middle Jurassic Talkeetna Arc section exposed in the Chugach Mountains of south central Alaska is 5-18 km wide and extends for over 150 km. This accreted island arc includes exposures of upper mantle to ...
    • Detailed studies of the structure, tectonics, near bottom magnetic anomalies and microearthquake seismicity of the Mid-Atlantic Ridge near 37°N 

      Macdonald, Ken C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1975-09)
      The Mid-Atlantic Ridge is one of the most well known and yet poorly understood spreading centers in the world. A detailed investigation of the Mid-Atlantic Ridge crest near 37°N (FAMOUS) was conducted using a deeply towed ...
    • Detectability of CO2 flux signals by a space-based lidar mission 

      Hammerling, Dorit M.; Kawa, S. Randolph; Schaefer, Kevin; Doney, Scott C.; Michalak, Anna M. (John Wiley & Sons, 2015-03-11)
      Satellite observations of carbon dioxide (CO2) offer novel and distinctive opportunities for improving our quantitative understanding of the carbon cycle. Prospective observations include those from space-based lidar such ...
    • Detecting anthropogenic CO2 changes in the interior Atlantic Ocean between 1989 and 2005 

      Wanninkhof, Rik; Doney, Scott C.; Bullister, John L.; Levine, Naomi M.; Warner, Mark J.; Gruber, Nicolas (American Geophysical Union, 2010-11-30)
      Repeat observations along the meridional Atlantic section A16 from Iceland to 56°S show substantial changes in the total dissolved inorganic carbon (DIC) concentrations in the ocean between occupations from 1989 through ...
    • Detecting aseismic strain transients from seismicity data 

      Llenos, Andrea L.; McGuire, Jeffrey J. (American Geophysical Union, 2011-06-17)
      Aseismic deformation transients such as fluid flow, magma migration, and slow slip can trigger changes in seismicity rate. We present a method that can detect these seismicity rate variations and utilize these anomalies ...
    • Detecting Atlantic herring by parametric sonar 

      Godø, Olav Rune; Foote, Kenneth G.; Dybedal, Johnny (Acoustical Society of America, 2010-03-17)
      The difference-frequency band of the Kongsberg TOPAS PS18 parametric sub-bottom profiling sonar, nominally 1–6 kHz, is being used to observe Atlantic herring. Representative TOPAS echograms of herring layers and schools ...
    • Detecting reactivity 

      Neubert, Michael G.; Caswell, Hal; Solow, Andrew R. (Ecological Society of America, 2009-10)
      By definition, ecological systems at a stable equilibrium eventually return to the equilibrium point following a small perturbation. In the short term, however, perturbations can grow. Equilibria that exhibit transient ...
    • Detecting the influence of initial pioneers on succession at deep-sea vents 

      Mullineaux, Lauren S.; Le Bris, Nadine; Mills, Susan W.; Henri, Pauline; Bayer, Skylar R.; Secrist, Richard G.; Siu, Nam (Public Library of Science, 2012-12-04)
      Deep-sea hydrothermal vents are subject to major disturbances that alter the physical and chemical environment and eradicate the resident faunal communities. Vent fields are isolated by uninhabitable deep seafloor, so ...
    • Detection and characterization of deep water wave breaking using moderate incidence angle microwave backscatter from the sea surface 

      Jessup, Andrew T. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-05)
      The importance of wave breaking in both microwave remote sensing and air-sea interaction has led to this investigation of the utility of a Ku-Band CW Doppler scatterometer to detect and characterize wave breaking in the ...
    • Detection and quantification of oil under sea ice : the view from below 

      Wilkinson, Jeremy P.; Boyd, Tim; Hagen, Bernard; Maksym, Ted; Pegau, Scott; Roman, Christopher N.; Singh, Hanumant; Zabilansky, Leonard (Elsevier, 2014-08-21)
      Traditional measures for detecting oil spills in the open-ocean are both difficult to apply and less effective in ice-covered seas. In view of the increasing levels of commercial activity in the Arctic, there is a growing ...
    • Detection of a tropospheric ozone anomaly using a newly developed ozone retrieval algorithm for an up-looking infrared interferometer 

      Lightner, K. J.; McMillan, W. W.; McCann, K. J.; Hoff, R. M.; Newchurch, M. J.; Hintsa, Eric J.; Barnet, C. D. (American Geophysical Union, 2009-03-25)
      On 2 June 2003, the Baltimore Bomem Atmospheric Emitted Radiance Interferometer (BBAERI) recorded an infrared spectral time series indicating the presence of a tropospheric ozone anomaly. The measurements were collected ...
    • Detection of an unusually large hydrothermal event plume above the slow-spreading Carlsberg Ridge : NW Indian Ocean 

      Murton, Bramley J.; Baker, Edward T.; Sands, Carla M.; German, Christopher R. (American Geophysical Union, 2006-05-31)
      About 90% of Earth's volcanism occurs along the global mid-ocean ridge system. Here, sporadic volcanic and tectonic activity is thought to cause cataclysmic release of hydrothermal fluids, forming event plumes. Each plume ...
    • Detection of anthropogenic climate change in satellite records of ocean chlorophyll and productivity 

      Henson, Stephanie A.; Sarmiento, Jorge L.; Dunne, John P.; Bopp, Laurent; Lima, Ivan D.; Doney, Scott C.; John, Jasmin G.; Beaulieu, C. (Copernicus Publications on behalf of the European Geosciences Union, 2010-02-15)
      Global climate change is predicted to alter the ocean's biological productivity. But how will we recognise the impacts of climate change on ocean productivity? The most comprehensive information available on its global ...
    • Detection of change in the Arctic using satellite and in situ data 

      Comiso, Josefino C.; Yang, Jiayan; Honjo, Susumu; Krishfield, Richard A. (American Geophysical Union, 2003-12-24)
      The decade of the 1990s was the warmest decade of the last century, while the year 1998 was the warmest year ever observed by modern techniques, with 9 out of 12 months of the year being the warmest months. Satellite ice ...
    • Detection of low-frequency tones and whale predator sounds by the American sand lance Ammodytes americanus 

      Strobel, S. M.; Mooney, T. Aran (2012-06)
      Auditory evoked potentials (AEPs) were used to measure the hearing range and auditory sensitivity of the American sand lance Ammodytes americanus. Responses to amplitude modulated tone pips indicated that the hearing ...