Now showing items 4045-4064 of 8196

    • Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean 

      De Pol-Holz, Ricardo; Ulloa, Osvaldo; Lamy, Frank; Dezileau, Laurent; Sabatier, Pierre; Hebbeln, Dierk (American Geophysical Union, 2007-05-01)
      We present high-resolution bulk sedimentary δ 15N data from the southern edge of the present-day oxygen minimum zone of the eastern South Pacific. The record is interpreted as representing changes in water column nitrogen ...
    • Lateral circulation and sediment transport driven by axial winds in an idealized, partially mixed estuary 

      Chen, Shih-Nan; Sanford, Lawrence P.; Ralston, David K. (American Geophysical Union, 2009-12-03)
      A 3D hydrodynamic model (ROMS) is used to investigate lateral circulation in a partially mixed estuary driven by axial wind events and to explore the associated transport of sediments. The channel is straight with a ...
    • Lateral continuity of basement seismic reflections in 15 Ma ultrafast-spreading crust at ODP Site 1256 

      Nag, Sreeja; Swift, Stephen A. (2010-07-25)
      The Ocean Drilling Program (ODP) initiated drilling at Site 1256D in the Guatemala Basin, about 1000km off the East Pacific Rise to penetrate plutonic rocks, anticipated to be relatively shallow in this region, formed at ...
    • Lateral coupling in baroclinically unstable flows 

      Spall, Michael A.; Pedlosky, Joseph (American Meteorological Society, 2008-06)
      A two-layer quasigeostrophic model in a channel is used to study the influence of lateral displacements of regions of different sign mean potential vorticity gradient (Πy) on the growth rate and structure of linearly ...
    • Lateral organic carbon supply to the deep Canada Basin 

      Hwang, Jeomshik; Eglinton, Timothy I.; Krishfield, Richard A.; Manganini, Steven J.; Honjo, Susumu (American Geophysical Union, 2008-06-12)
      Understanding the processes driving the carbon cycle in the Arctic Ocean is important for assessing the impacts of the predicted rapid and amplified climate change in this region. We analyzed settling particle samples ...
    • Latin American Regional IAMSLIC Group: the beginning and its results 

      Ramirez Jauregui, Maria Clara (IAMSLIC, 2005)
    • Latitudinal and taxonomic patterns in the feeding ecologies of fish larvae : a literature synthesis 

      Llopiz, Joel K. (2012-03-20)
      The longtime focus on factors that influence the survival of marine fish larvae has yielded an extensive number of studies on larval fish diets and feeding success. In light of a recent increase in such studies within lower ...
    • The LatMix summer campaign : submesoscale stirring in the upper ocean 

      Shcherbina, Andrey Y.; Sundermeyer, Miles A.; Kunze, Eric; D’Asaro, Eric; Badin, Gualtiero; Birch, Daniel; Brunner-Suzuki, Anne-Marie E. G.; Callies, Joern; Cervantes, Brandy T. Kuebel; Claret, Mariona; Concannon, Brian; Early, Jeffrey; Ferrari, Raffaele; Goodman, Louis; Harcourt, Ramsey R.; Klymak, Jody M.; Lee, Craig M.; Lelong, M.-Pascale; Levine, Murray D.; Lien, Ren-Chieh; Mahadevan, Amala; McWilliams, James C.; Molemaker, M. Jeroen; Mukherjee, Sonaljit; Nash, Jonathan D.; Ozgokmen, Tamay M.; Pierce, Stephen D.; Ramachandran, Sanjiv; Samelson, Roger M.; Sanford, Thomas B.; Shearman, R. Kipp; Skyllingstad, Eric D.; Smith, K. Shafer; Tandon, Amit; Taylor, John R.; Terray, Eugene A.; Thomas, Leif N.; Ledwell, James R. (American Meteorological Society, 2015-08)
      Lateral stirring is a basic oceanographic phenomenon affecting the distribution of physical, chemical, and biological fields. Eddy stirring at scales on the order of 100 km (the mesoscale) is fairly well understood and ...
    • Laurentian crustal recycling in the Ordovician Grampian Orogeny : Nd isotopic evidence from western Ireland 

      Draut, Amy E.; Clift, Peter D.; Chew, David M.; Cooper, Matthew J.; Taylor, Rex N.; Hannigan, Robyn E. (Cambridge University Press, 2004-04-21)
      Because magmatism associated with subduction is thought to be the principal source for continental crust generation, assessing the relative contribution of pre-existing (subducted and assimilated) continental material to ...
    • Lava deposition history in ODP Hole 1256D : insights from log-based volcanostratigraphy 

      Tominaga, Masako; Umino, Susumu (American Geophysical Union, 2010-05-11)
      A log-based volcanic stratigraphy of Ocean Drilling Program Hole 1256D provides a vertical cross-section view of in situ upper crust formed at the East Pacific Rise (EPR) with unprecedented resolution. This stratigraphy ...
    • 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)
    • 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 ...