World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

The Analysis of Large-scale Turbulence Characteristics in the Indonesian Seas Derived from a Regional Model Based on the Princeton Ocean Model : Volume 9, Issue 1 (16/01/2012)

By O'Driscoll, K.

Click here to view

Book Id: WPLBN0003975166
Format Type: PDF Article :
File Size: Pages 41
Reproduction Date: 2015

Title: The Analysis of Large-scale Turbulence Characteristics in the Indonesian Seas Derived from a Regional Model Based on the Princeton Ocean Model : Volume 9, Issue 1 (16/01/2012)  
Author: O'Driscoll, K.
Volume: Vol. 9, Issue 1
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

O'driscoll, K., & Kamenkovich, V. (2012). The Analysis of Large-scale Turbulence Characteristics in the Indonesian Seas Derived from a Regional Model Based on the Princeton Ocean Model : Volume 9, Issue 1 (16/01/2012). Retrieved from http://worldlibrary.net/


Description
Description: Institute of Oceanography, Centre for Marine and Atmospheric Sciences, University of Hamburg, Bundesstrasse 53, 20146 Hamburg, Germany. The analysis is presented of the distribution of deep ocean turbulence characteristics on the horizontal scale of order 100 km in the vicinity of the Lifamatola Sill, from the Southern Maluku Sea (north of the sill) to the Seram Sea (south of the sill). The turbulence characteristics were calculated with a regional model of the Indonesian seas circulation based on the Princeton Ocean Model (POM), incorporating the Mellor-Yamada turbulence closure scheme. The analysis has been carried out for the entire Indonesian seas region, including areas around important topographic features, such as the Lifamatola Sill, the North Sangihe Ridge, the Dewakang Sill and the North and South Halmahera Sea Sills. To illustrate results of application of the Mellor-Yamada closure scheme we have focused on the description of features of turbulence characteristics across the Lifamatola Sill because dynamically this region is very important and some estimates of mixing coefficients in this area are available. As is well known, the POM model output provides both dynamical (depth-integrated and 3-D velocities, temperature, salinity, and sea-surface-height) and turbulence characteristics (kinetic energy and master scale of turbulence, mixing coefficients of momentum, temperature and salinity, etc.). As a rule, the analysis of POM modeling results has been restricted to the study of corresponding dynamical characteristics, however the study of turbulence characteristics is essential to understanding the dynamics of the ocean circulation as well. Due to the absence of direct measurements of turbulence characteristics in the analyzed area, we argued the validity of the simulated characteristics in the light of their compatibility with some general principles. Thus, along these lines, vertical profiles of across-the-sill velocities, twice the kinetic energy of turbulence, turbulence length scale, the separate terms in the equation of kinetic energy of turbulence, the Richardson number, and finally coefficients of mixing of momentum and temperature and salinity are discussed. Average values of the vertical mixing coefficient compare well with indirect estimates previously made from diagnostic calculations based on Munk's model.

Summary
The analysis of large-scale turbulence characteristics in the Indonesian seas derived from a regional model based on the Princeton Ocean Model

Excerpt
van Aken, H. M., Punjanan, J., and Saimima, S.: Physical aspects of the flushing of the East Indonesian basins, Neth. J. Sea Res., 22, 315–339, 1988.; van Aken, H. M., Bennekom, A. J. V., Mook, W. G., and Postma, H.: Application of Munk's abyssal recipes to tracer distributions in the deep waters of the Southern Banda basin, Oceanol. Acta, 14, 151–162, 1991.; van Aken, H. M., Brodjonegoro, I. S., and Jaya, I.: The deep-water motion through the Lifamatola Passage and its contribution to the Indonesian throughflow, Deep-Sea Res. Pt. I, 56, 1203–1216, 2009.; Munk, W. H.: Abyssal recipes, Deep-Sea Res., 13, 707–730, 1966.; Alford, M., Gregg, M., and Ilyas, M.: Diapycnal mixing in the Banda Sea: results of the first microstructure measurements in the Indonesian throughflow, Geophys. Res. Lett., 26, 2741–2744, 1999.; Broecker, W. S., Patzert, W. C., Toggweiler, J. R., and Stuiver, M.: Hydrography, chemistry, and radioisotopes in the southeast Asian waters, J. Geophys. Res., 91, 14345–14354, 1986.; Burchard, H.: On the $q^2\ell$ equation by Mellor and Yamada (1982), J. Phys. Oceanogr., 31, 1377–1387, 2001.; Conkright, M. E., Locarnini, R. A., Garcia, H. E., O'Brien, T. D., Boyer, T. P., Stephens, C., and Antonov, J.: World Ocean Atlas 2001: Objective Analyses, Data Statistics, and Figures, Cd-rom documentation, National Oceanographic Data Center, Silver Spring, MD, 2002.; Cummins, P.: Stratified flow over topography: time-dependent comparisons between model solutions and observations, Dynam. Atmos. Oceans, 33, 43–72, 2000.; Ezer, T.: On the seasonal mixed layer simulated by a basin-scale ocean model and the Mellor-Yamada turbulence scheme, J. Geophys. Res., 105, 16843–16855, 2000.; Ezer, T.: Entrainment, diapycnal mixing and transport in three-dimensional bottom gravity current simulations using the Mellor-Yamada turbulence scheme, Ocean Model., 9, 151–168, 2005.; Ezer, T. and Mellor, G.: A generalized coordinate ocean model and a comparison of the bottom boundary layer dynamics in terrain-following and z-level grids, Ocean Model., 6, 379–403, 2004.; Ezer, T. and Weatherly, G. L.: A numerical study of the interaction between a deep cold jet and the bottom boundary layer of the ocean, J. Phys. Oceanogr., 20, 801–816, 1990.; Gordon, A. L.: Oceanography of the Indonesian seas and their throughflow, Oceanography, 18, 14–27, 2005.; Fieux, M., Andrie, C., Delecluse, P., Ilahude, A. G., Kartavtseff, A., Mantisi, F., Molcard, R., and Swallow, J. C.: Measurements within the Pacific-Indian oceans throughflow region, Deep-Sea Res. Pt. I, 41, 1091–1130, 1994.; Gordon, A. L., Giulivi, C. F., and Ilahude, A. G.: Deep topographic barriers within the Indonesian seas, Deep-Sea Res. Pt. II, 50, 2205–2228, 2003.; Grist, J. P. and Josey, S. A.: Inverse analysis adjustment of the SOC air-sea flux climatology using ocean heat transport constraints, J. Climate, 20, 3274–3295, 2003.; Kamenkovich, V. M., O'Driscoll, K. T. A., and Nechaev, D.: Dynamics of the Indonesian seas, Part II – The role of pressure head, J. Mar. Res., 67, 159–184, 2009.; Marchesiello, P., McWilliams, J. M., and Shchepetkin, A.: Open boundary conditions for log-term integration of regional oceanic m

 

Click To View

Additional Books


  • Adapting to Life: Ocean Biogeochemical M... (by )
  • The Multifractal Structure of Satellite ... (by )
  • Molecular Biology Techniques and Applica... (by )
  • Flow and Mixing Around a Glacier Tongue ... (by )
  • High Frequency Variability of the Atlant... (by )
  • Mechanisms Controlling Primary and New P... (by )
  • The Aegean Sea Marine Security Decision ... (by )
  • Sea Level Budget Over 2005–2013: Missing... (by )
  • Effect of Variable Winds on Current Stru... (by )
  • A Monte Carlo Simulation of Multivariate... (by )
  • On the Relationship Among the Adriatic–i... (by )
  • Long Term Trends in the Sea Surface Temp... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.