Now showing items 4326-4345 of 8742

    • Lava geochemistry as a probe into crustal formation at the East Pacific Rise 

      Perfit, Michael R.; Wanless, V. Dorsey; Ridley, W. Ian; Klein, Emily M.; Smith, Matthew C.; Goss, Adam R.; Hinds, Jillian S.; Kutza, Scott W.; Fornari, Daniel J. (The Oceanography Society, 2012-03)
      Basalt lavas comprise the greatest volume of volcanic rocks on Earth, and most of them erupt along the world's mid-ocean ridges (MORs). These MOR basalts (MORBs) are generally thought to be relatively homogeneous in ...
    • The layer of frictional influence in wind and ocean currents 

      Rossby, Carl-Gustaf; Montgomery, Raymond B. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1935-04)
      The purpose of the present paper is to analyze, in a reasonably comprehensive fashion, the principal factors controlling the mean state of turbulence and hence the mean velocity distribution in wind and ocean currents ...
    • LCSH and the ASFIS Thesaurus: an update 

      Markham, James W.; Avery, Beth (IAMSLIC, 1999)
    • Leaching losses from Kenyan maize cropland receiving different rates of nitrogen fertilizer 

      Russo, Tess A.; Tully, Katherine L.; Palm, Cheryl; Neill, Christopher (Springer, 2017-05-16)
      Meeting food security requirements in sub-Saharan Africa (SSA) will require increasing fertilizer use to improve crop yields, however excess fertilization can cause environmental and public health problems in surface and ...
    • Leads in Arctic pack ice enable early phytoplankton blooms below snow-covered sea ice 

      Assmy, Philipp; Fernández-Méndez, Mar; Duarte, Pedro; Meyer, Amelie; Randelhoff, Achim; Mundy, Christopher J.; Olsen, Lasse M.; Kauko, Hanna Maria; Bailey, Allison; Chierici, Melissa; Cohen, Lana; Doulgeris, Anthony P.; Ehn, Jens K.; Fransson, Agneta; Gerland, Sebastian; Hop, Haakon; Hudson, Stephen R.; Hughes, Nick; Itkin, Polona; Johnsen, Geir; King, Jennifer A.; Koch, Boris P.; Koenig, Zoe; Kwasniewski, Slawomir; Laney, Samuel R.; Nicolaus, Marcel; Pavlov, Alexey K.; Polashenski, Christopher M.; Provost, Christine; Rösel, Anja; Sandbu, Marthe; Spreen, Gunnar; Smedsrud, Lars H.; Sundfjord, Arild; Taskjelle, Torbjørn; Tatarek, Agnieszka; Wiktor, Jozef; Wagner, Penelope M.; Wold, Anette; Steen, Harald; Granskog, Mats A. (Nature Publishig Group, 2019-01-19)
      The Arctic icescape is rapidly transforming from a thicker multiyear ice cover to a thinner and largely seasonal first-year ice cover with significant consequences for Arctic primary production. One critical challenge is ...
    • Leaf litter nutrient uptake in an intermittent blackwater river : influence of tree species and associated biotic and abiotic drivers 

      Mehring, Andrew S.; Kuehn, Kevin A.; Thompson, Aaron; Pringle, Catherine M.; Rosemond, Amy D.; First, Matthew R.; Lowrance, R. Richard; Vellidis, George (2014-12)
      Organic matter may sequester nutrients as it decomposes, increasing in total N and P mass via multiple uptake pathways. During leaf litter decomposition, microbial biomass and accumulated inorganic materials immobilize and ...
    • Leaf wax biomarkers in transit record river catchment composition 

      Ponton, Camilo; West, A. Joshua; Feakins, Sarah J.; Galy, Valier (John Wiley & Sons, 2014-09-24)
      Rivers carry organic molecules derived from terrestrial vegetation to sedimentary deposits in lakes and oceans, storing information about past climate and erosion, as well as representing a component of the carbon cycle. ...
    • Learning commons planning: one size does not fit all 

      Heckman, Jan E.; Heckman, Mary V. (IAMSLIC, 2009)
    • Learning commons: an overview 

      Winiarz, Elizabeth (IAMSLIC, 2009)
    • Legal issues arising from new technologies 

      Kretsinger, Marilyn J. (IAMSLIC, 1989)
    • Length control of the metaphase spindle 

      Goshima, Gohta; Wollman, Roy; Stuurman, Nico; Scholey, Jonathan M.; Vale, Ronald D. (2005-09-30)
      The pole-to-pole distance of the metaphase spindle is reasonably constant in a given cell type; in the case of vertebrate female oocytes, this steady-state length can be maintained for substantial lengths of time, during ...
    • Length scale of the finite-amplitude meanders of shelfbreak fronts 

      Zhang, Weifeng G.; Gawarkiewicz, Glen G. (American Meteorological Society, 2015-10)
      Through combining analytical arguments and numerical models, this study investigates the finite-amplitude meanders of shelfbreak fronts characterized by sloping isopycnals outcropping at both the surface and the shelfbreak ...
    • Lesions in gshA (encoding gamma -L-glutamyl-L-cysteine synthetase) prevent aerobic synthesis of thiamine in Salmonella enterica serovar Typhimurium LT2 

      Gralnick, Jeffrey; Webb, Eric A.; Beck, Brian; Downs, Diana (American Society for Microbiology, 2000-09)
      Thiamine pyrophosphate is an essential cofactor that is synthesized de novo in Salmonella enterica serovar Typhimurium and other bacteria. In addition to genes encoding enzymes in the biosynthetic pathway, mutations in ...
    • Lessons learned from 104 years of mobile observatories [poster] 

      Miller, Stephen P.; Neiswender, Caryn; Clark, Dru; Raymond, Lisa; Rioux, Margaret A.; Norton, Cathy N.; Detrick, Robert S.; Helly, John; Sutton, Don; Weatherford, John (2007-12-10)
      As the oceanographic community ventures into a new era of integrated observatories, it may be helpful to look back on the era of "mobile observatories" to see what Cyberinfrastructure lessons might be learned. For example, ...
    • Lethal entanglement in baleen whales 

      Cassoff, Rachel M.; Moore, Kathleen M. T.; McLellan, William A.; Barco, Susan G.; Rotstein, David S.; Moore, Michael J. (Inter-Research, 2011-10-06)
      Understanding the scenarios whereby fishing gear entanglement of large whales induces mortality is important for the development of mitigation strategies. Here we present a series of 21 cases involving 4 species of baleen ...
    • Lethal marine snow : pathogen of bivalve mollusc concealed in marine aggregates 

      Lyons, M. Maille; Ward, J. Evan; Smolowitz, Roxanna M.; Uhlinger, Kevin R.; Gast, Rebecca J. (2005-06-14)
      We evaluated marine aggregates as environmental reservoirs for a thraustochytrid pathogen, Quahog Parasite Unknown (QPX), of the northern quahog or hard clam, Mercenaria mercenaria. Positive results from in situ hybridization ...
    • Letters to the Editor : Challenges of forensic science 

      Shanklin, D. Radford (2012-07-09)
      Letters: Challenges Of Forensic Science. Published August 6, 2012
    • Leveraging the GeoLink Knowledge Base for Cruise Information 

      Mickle, Audrey; Fils, Douglas; Shepherd, Adam (Federation of Earth Science Information Partners, 2016-12-21)
      Open Linked Data (LOD) is providing an excellent opportunity for repositories, libraries, and archives to expand the use of their holdings and advance the work of researchers. The implementation of the GeoLink Knowledgebase ...
    • LFASE borehole array data acquisition and reduction summary 

      Bolmer, S. Thompson; Swift, Stephen A.; Stephen, Ralph A. (Woods Hole Oceanographic Institution, 1991-09)
      On the Low Frequency Acoustic - Seismic Experiment (LFASE), carried out at DSDP hole 534A in August, 1989, WHOI was responsible for acquiring data from a twelve channel borehole seismic array. Data were acquired both ...
    • LFASE data processing system overview 

      Little, William S.; Bolmer, S. Thompson; Stephen, Ralph A. (Woods Hole Oceanographic Institution, 1990-06)
      This technical report provides an overview of the LFASE data processing system. This software system is made up of over twenty-five programs which are used to acquire, reduce, and analyze acoustic seismic data collected during ...