Now showing items 2336-2355 of 7897

    • Estimating time-dependent connectivity in marine systems 

      Defne, Zafer; Ganju, Neil K.; Aretxabaleta, Alfredo (John Wiley & Sons, 2016-02-04)
      Hydrodynamic connectivity describes the sources and destinations of water parcels within a domain over a given time. When combined with biological models, it can be a powerful concept to explain the patterns of constituent ...
    • Estimating uncertainty in ecosystem budget calculations 

      Yanai, Ruth D.; Battles, John J.; Richardson, Andrew D.; Blodgett, Corrie A.; Wood, Dustin M.; Rastetter, Edward B. (Springer, 2010-02-25)
      Ecosystem nutrient budgets often report values for pools and fluxes without any indication of uncertainty, which makes it difficult to evaluate the significance of findings or make comparisons across systems. We present ...
    • Estimating westslope cutthroat trout (Oncorhynchus clarkii lewisi) movements in a river network using strontium isoscapes 

      Muhlfeld, Clint C.; Thorrold, Simon R.; McMahon, Thomas E.; Marotz, Brian (NRC Research Press, 2012-04-20)
      We used natural variation in the strontium concentration (Sr:Ca) and isotope composition (87Sr:86Sr) of stream waters and corresponding values recorded in otoliths of westslope cutthroat trout (Oncorhynchus clarkii lewisi) ...
    • Estimation and correction of geometric distortions in side-scan sonar images 

      Cobra, Daniel Távora de Queiroz (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-03)
      This thesis introduces a new procedure for the enhancement of acoustic images of the bottom of the sea produced by side-scan sonars. Specifically, it addresses the problem of estimating and correcting geometric distortions ...
    • Estimation and tracking of rapidly time-varying broadband acoustic communication channels 

      Li, Weichang (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-02)
      This thesis develops methods for estimating wideband shallow-water acoustic communication channels. The very shallow water wideband channel has three distinct features: large dimension caused by extensive delay spread; ...
    • Estimation of biological parameters of marine organisms using linear and nonlinear acoustic scattering model-based inversion methods 

      Chu, Dezhang; Lawson, Gareth L.; Wiebe, Peter H. (Acoustical Society of America, 2016-05-19)
      The linear inversion commonly used in fisheries and zooplankton acoustics assumes a constant inversion kernel and ignores the uncertainties associated with the shape and behavior of the scattering targets, as well as other ...
    • Estimation of groundwater and nutrient fluxes to the Neuse River estuary, North Carolina 

      Spruill, Timothy B.; Bratton, John F. (2008-01-12)
      A study was conducted between April 2004 and September 2005 to estimate ground-water and nutrient discharge to the Neuse River estuary in North Carolina. Largest ground-water fluxes were observed to occur generally within ...
    • Estimation of mixed-layer depth from surface parameters 

      Swain, D.; Ali, M. M.; Weller, Robert A. (Sears Foundation for Marine Research, 2006-09)
      Mixed layer depth (MLD) is an important oceanographic parameter. However, the lack of direct observations of MLD hampers both specification and investigation of its spatial and temporal variability. An important alternative ...
    • Estimation of ocean subsurface thermal structure from surface parameters : a neural network approach 

      Ali, M. M.; Swain, D.; Weller, Robert A. (American Geophysical Union, 2004-10-22)
      Satellite remote sensing provides diverse and useful ocean surface observations. It is of interest to determine if such surface observations can be used to infer information about the vertical structure of the ocean's ...
    • Estimation of planetary wave parameters from the data of the 1981 ocean acoustic tomography experiment 

      Chiu, Ching-Sang (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1985-08)
      Using the maximum-likelihood estimation method and minimization techniques, quasi-geostrophic wave solutions were fitted to the observations of the 1981 Ocean Acoustic Tomography Experiment. The experiment occupied a ...
    • Estimation of sea surface wave spectra using acoustic tomography 

      Miller, James H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1987-08)
      This thesis develops a new technique for estimating quasi-homogeneous and quasi-stationary sea surface wave frequency-direction spectra using acoustic tomography. The analysis of acoustic (mode and ray) phase and travel ...
    • Estuarine boundary layer mixing processes : insights from dye experiments 

      Chant, Robert J.; Geyer, W. Rockwell; Houghton, Robert; Hunter, Elias; Lerczak, James A. (American Meteorological Society, 2007-07)
      A series of dye releases in the Hudson River estuary elucidated diapycnal mixing rates and temporal variability over tidal and fortnightly time scales. Dye was injected in the bottom boundary layer for each of four releases ...
    • Estuarine exchange flow quantified with isohaline coordinates : contrasting long and short estuaries 

      Chen, Shih-Nan; Geyer, W. Rockwell; Ralston, David K.; Lerczak, James A. (American Meteorological Society, 2012-05)
      Isohaline coordinate analysis is used to compare the exchange flow in two contrasting estuaries, the long (with respect to tidal excursion) Hudson River and the short Merrimack River, using validated numerical models. The ...
    • Estuarine frontogenesis 

      Geyer, W. Rockwell; Ralston, David K. (American Meteorological Society, 2015-02)
      Model studies and observations in the Hudson River estuary indicate that frontogenesis occurs as a result of topographic forcing. Bottom fronts form just downstream of lateral constrictions, where the width of the estuary ...
    • Eubalaena glacialis Bay of Cape Cod, Massachusetts 4/10/2009 Animal a Depth Profile 

      Parks, Susan E. (The EAARL, Pennsylvania State University, contacts: Susan Parks, sep20@psu.edu; and The DTAG Project, Woods Hole Oceanographic Institution, contacts: dtag@whoi.edu, 2010-12-14)
      Location: Bay of Cape Cod, Massachusetts, Species: Eubalaena glacialis (Northern Atlantic Right Whale), Permit: Scott Kraus NMFS permit #655-1652-01, Water Depth: 24m
    • Eubalaena glacialis Bay of Cape Cod, Massachusetts 4/13/2010 Animal a Depth Profile 

      Parks, Susan E. (The EAARL, Pennsylvania State University, contacts: Susan Parks, sep20@psu.edu; and The DTAG Project, Woods Hole Oceanographic Institution, contacts: dtag@whoi.edu, 2010-12-14)
      Location: Bay of Cape Cod, Massachusetts, Species: Eubalaena glacialis (Northern Atlantic Right Whale), Permit: NOAA Fisheries Permit# 775-1875, Water Depth: 29m
    • Eubalaena glacialis Bay of Cape Cod, Massachusetts 4/17/2009 Animal a Depth Profile 

      Parks, Susan E. (The DTAG Project, Woods Hole Oceanographic Institution, contact: dtag@whoi.edu; and The EAARL, Pennsylvania State University, contacts: Susan Parks, sep20@psu.edu, 2010-12-14)
      Location: Bay of Cape Cod, Massachusetts, Species: Eubalaena glacialis (Northern Atlantic Right Whale), Permit: Scott Kraus NMFS permit #655-1652-01, Water Depth: 30m
    • Eubalaena glacialis Bay of Cape Cod, Massachusetts 4/2/2010 Animal a Depth Profile 

      Parks, Susan E. (The DTAG Project, Woods Hole Oceanographic Institution, contacts: dtag@whoi.edu; and The EAARL, Pennsylvania State University, contacts: Susan Parks, sep20@psu.edu, 2010-12-14)
      Location: Bay of Cape Cod, Massachusetts, Species: Eubalaena glacialis (Northern Atlantic Right Whale), Permit: NOAA Fisheries Permit# 775-1875, Water Depth: 20m
    • Eubalaena glacialis Bay of Cape Cod, Massachusetts 4/2/2010 Animal b Depth Profile 

      Parks, Susan E. (The DTAG Project, Woods Hole Oceanographic Institution, contacts: dtag@whoi.edu; and The EAARL, Pennsylvania State University, contacts: Susan Parks, sep20@psu.edu, 2010-12-14)
      Location: Bay of Cape Cod, Massachusetts, Species: Eubalaena glacialis (Northern Atlantic Right Whale), Permit: NOAA Fisheries Permit# 775-1875, Water Depth: 29m
    • Eubalaena glacialis Bay of Cape Cod, Massachusetts 4/25/2009 Animal a Depth Profile 

      Parks, Susan E. (The EAARL, Pennsylvania State University, contacts: Susan Parks, sep20@psu.edu; and The DTAG Project, Woods Hole Oceanographic Institution, contacts: dtag@whoi.edu, 2010-12-14)
      Location: Bay of Cape Cod, Massachusetts, Species: Eubalaena glacialis (Northern Atlantic Right Whale), Permit: Scott Kraus NMFS permit #655-1652-01, Water Depth: 25m