Now showing items 4898-4917 of 7907

    • Nitrous oxide nitrification and denitrification 15N enrichment factors from Amazon forest soils 

      Perez, Tibisay; Garcia-Montiel, Diana; Trumbore, Susan E.; Tyler, Stanley; de Camargo, Plinio; Moreira, Marcelo; Piccolo, Marisa C.; Cerri, Carlos C. (Ecological Society of America, 2006-12)
      The isotopic signatures of 15N and 18O in N2O emitted from tropical soils vary both spatially and temporally, leading to large uncertainty in the overall tropical source signature and thereby limiting the utility of isotopes ...
    • NLOAD : an interactive, web-based modeling tool for nitrogen management in estuaries 

      Bowen, Jennifer L.; Ramstack, Joy M.; Mazzilli, S.; Valiela, Ivan (Ecological Society of America, 2007-07)
      Eutrophication of estuaries is an increasing global concern that requires development of new tools to identify causes, quantify conditions, and propose management options that address this environmental problem. Since ...
    • No Repository is an Island: Putting the WHOAS community repository in a geoscience context [poster] 

      Mickle, Audrey (E-Science Symposium, University of Massachusetts Medical School, 2016-04-06)
      The MBLWHOI Library is partner in the NSF-funded EarthCube building block, GeoLink, whose goal is to push the boundaries of semantic technology in cross-repository discovery within the geosciences field. GeoLink has created ...
    • No. 2 fuel oil compound retention and release by Mytilus edulis : 1983 Cape Cod Canal oil spill 

      Farrington, John W.; Xiaoping, Jia; Clifford, C. Hovey; Tripp, Bruce W.; Livramento, Joaquim B.; Davis, Alan C.; Frew, Nelson M.; Johnson, Carl G. (Woods Hole Oceanographic Institution, 1986-03)
      Retention and release of No. 2 fuel oil compounds by Mytilus edulis contaminated by a small oil spill in the Cape Cod Canal in 1983 has been studied for the population "in situ" and for a subsample transplanted to a ...
    • NOAA's new products for the marine science community 

      Watts, Carol (IAMSLIC, 1990)
    • NOAA's role in user communications: a new outlook. 

      Stanley, William (IAMSLIC, 1985)
    • NOAA/West Coast and Alaska Tsunami Warning Center response criteria 

      Whitmore, Paul; ten Brink, Uri S.; Caropolo, Michael; Huerfano-Moreno, Victor; Knight, William; Sammler, William; Sandrik, Al (Tsunami Society, 2009)
      West Coast/Alaska Tsunami Warning Center (WCATWC) response criteria for earthquakes occurring in the Atlantic and Caribbean basins are presented. Initial warning center decisions are based on an earthquake’s location, ...
    • Noble gas constraints on air-sea gas exchange and bubble fluxes 

      Stanley, Rachel H. R.; Jenkins, William J.; Lott, Dempsey E.; Doney, Scott C. (American Geophysical Union, 2009-11-19)
      Air-sea gas exchange is an important part of the biogeochemical cycles of many climatically and biologically relevant gases including CO2, O2, dimethyl sulfide and CH4. Here we use a three year observational time series ...
    • Noble gas signatures in Greenland : tracing glacial meltwater sources 

      Niu, Yi; Castro, M. Clara; Aciego, Sarah M.; Hall, Chris M.; Stevenson, Emily I.; Arendt, Carli A.; Das, Sarah B. (John Wiley & Sons, 2015-11-06)
      This study represents the first comprehensive noble gas study in glacial meltwater from the Greenland Ice Sheet. It shows that most samples are in disequilibrium with surface collection conditions. A preliminary Ne and Xe ...
    • Noble gas signatures of abyssal gabbros and peridotites at an Indian Ocean core complex 

      Kumagai, Hidenori; Dick, Henry J. B.; Kaneoka, Ichiro (American Geophysical Union, 2003-12-30)
      We report some of the first noble gas data for in situ lower oceanic crust and shallow mantle. From a suite of gabbros and peridotites recovered from the Atlantis Bank oceanic core complex on the Southwest Indian Ridge, ...
    • Noise level correlates with manatee use of foraging habitats 

      Miksis-Olds, Jennifer L.; Donaghay, Percy L.; Miller, James H.; Tyack, Peter L.; Nystuen, Jeffrey A. (Acoustical Society of America, 2007-05)
      The introduction of anthropogenic sound to coastal waters is a negative side effect of population growth. As noise from boats, marine construction, and coastal dredging increases, environmental and behavioral monitoring ...
    • A non-invasive method for measuring preimplantation embryo physiology 

      Trimarchi, James R.; Liu, Lin; Porterfield, D. Marshall; Smith, Peter J. S.; Keefe, David L. (Cambridge University Press, 2000-02)
      The physiology of the early embryo may be indicative of embryo vitality and therefore methods for non-invasively monitoring physiological parameters from embryos could improve preimplantation diagnoses. The self-referencing ...
    • Non-linear dynamic intertwining of rods with self-contact 

      Goyal, Sachin; Perkins, N. C.; Lee, Christopher L. (2007-10)
      Twisted marine cables on the sea floor can form highly contorted three-dimensional loops that resemble tangles. Such tangles or ‘hockles’ are topologically equivalent to the plectomenes that form in supercoiled DNA ...
    • Non-Rayleigh acoustic scattering characteristics of individual fish and zooplankton 

      Stanton, Timothy K.; Chu, Dezhang; Reeder, D. Benjamin (IEEE, 2004-04)
      It has long been known that the statistical properties of acoustic echoes from individual fish can have non-Rayleigh characteristics. The statistical properties of echoes from zooplankton are generally less understood. In ...
    • Non-Rayleigh scattering by a randomly oriented elongated scatterer 

      Bhatia, Saurav (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2012-08)
      The echo statistics of a randomly rough, randomly oriented prolate spheroid that is randomly located in a beampattern are investigated from physics-based principles both analytically and by Monte Carlo methods. This is ...
    • Nonequilibrium clumped isotope signals in microbial methane 

      Wang, David T.; Gruen, Danielle S.; Lollar, Barbara Sherwood; Hinrichs, Kai-Uwe; Stewart, Lucy C.; Holden, James F.; Hristov, Alexander N.; Pohlman, John W.; Morrill, Penny L.; Konneke, Martin; Delwiche, Kyle B.; Reeves, Eoghan P.; Sutcliffe, Chelsea N.; Ritter, Daniel J.; Seewald, Jeffrey S.; McIntosh, Jennifer C.; Hemond, Harold F.; Kubo, Michael D.; Cardace, Dawn; Hoehler, Tori M.; Ono, Shuhei (2015-02-09)
      Methane is a key component in the global carbon cycle with a wide range of anthropogenic and natural sources. Although isotopic compositions of methane have traditionally aided source identification, the abundance of its ...
    • Nonhomogeneous seawater Sr isotopic composition in the coastal oceans : a novel tool for tracing water masses and submarine groundwater discharge 

      Huang, Kuo-Fang; You, Chen-Feng; Chung, Chuan-Hsiung; Lin, In-Tian (American Geophysical Union, 2011-05-07)
      Here we present high-precision (2σ = ±3 ppm) 87Sr/86Sr measurements in coastal waters, together with salinity, to evaluate water mass mixing and the influence of submarine groundwater discharge (SGD) in coastal waters and ...
    • A nonhydrostatic version of FVCOM : 1. Validation experiments 

      Lai, Zhigang; Chen, Changsheng; Cowles, Geoffrey W.; Beardsley, Robert C. (American Geophysical Union, 2010-11-13)
      The unstructured grid finite volume coastal ocean model (FVCOM) system has been expanded to include nonhydrostatic dynamics. This addition uses the factional step method with both split mode explicit and semi-implicit ...
    • A nonhydrostatic version of FVCOM : 2. Mechanistic study of tidally generated nonlinear internal waves in Massachusetts Bay 

      Lai, Zhigang; Chen, Changsheng; Cowles, Geoffrey W.; Beardsley, Robert C. (American Geophysical Union, 2010-12-21)
      The generation, propagation, and dissipation processes of large-amplitude nonlinear internal waves in Massachusetts Bay during the stratified season were examined using the nonhydrostatic Finite-Volume Coastal Ocean Model ...