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The South China Sea Thermohaline Structure And Circulation
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Book Synopsis The South China Sea Thermohaline Structure and Circulation by :
Download or read book The South China Sea Thermohaline Structure and Circulation written by and published by . This book was released on 2002 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, the authors used the Navy's Master Oceanographic Observation Data Set (MOODS), consisting of 116,019 temperature and 9,617 salinity profiles, during 1968-1984 to investigate the temporal and spatial variabilities of South China Sea thermohaline structures and circulation. For temperature, profiles were binned into 204 monthly data sets from 1968 to 1984 (17 years). For salinity, profiles were binned into 12 climatological monthly data sets due to the data paucity. A two-scale optimal interpolation method was used to establish a three-dimensional, monthly varying gridded data set from MOODS, covering the area of 5 degrees to 25 degrees N and 105 degrees to 125 degrees E and the depth from the surface to 400 m. After the gridded data set had been established, both composite analysis and Empirical Orthogonal Function (EOF) analysis (for temperature only) were used to identify the major thermohaline features, including annual mean, monthly anomalies, and interannual thermal variabilities. The inverted monthly circulation pattern using the P-vector method also is discussed.
Book Synopsis The South China Sea Thermohaline Structure and Circulation by : Binbing Ma
Download or read book The South China Sea Thermohaline Structure and Circulation written by Binbing Ma and published by . This book was released on 1998-09-01 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: The minimum curvature with spline method was used to establish a three-dimensional monthly-varying gridded data from the Navy's Master Oceanographic Observation Data Set (approximate 189,000 profiles), covering the area of 5 deg N - 25 deg N and 105 deg E - 125 deg E and from the surface to 400 m depth. For temperature, profiles were binned into 204 monthly data sets from 1968 to 1984 (17 years). Because of the paucity of salinity data, salinity profiles were binned into 12 climatological monthly data sets, and the monthly climatological mean was computed. After the gridded data set had been established, both composite analysis and the Empirical Orthogonal Function (EOF) analysis were used to identity the major thermohaline features. The first EOF mode accounts for 26.7% of the variance and represents the seasonal variation. The second EOF mode accounts for 17.7% of the variance and represents the interannual SCS warning/cooling phases. Furthermore, the P-vector method was used to invert three-dimensional velocity fields from the analyzed temperature and salinity data. Important dynamical processes, including th Kuroshio intrusion, the western boundary current (counter-current), the cross basin current (undercounter-current), the mesoscale eddies, and the basin gyre are identified.
Book Synopsis Studies of the South China Sea Circulation and Thermal Structure Using a Three Dimensional Numerical Model by : Nathan L. Edmons
Download or read book Studies of the South China Sea Circulation and Thermal Structure Using a Three Dimensional Numerical Model written by Nathan L. Edmons and published by . This book was released on 1996 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seasonal ocean circulation and thermal structure in the South China Sea (SCS) were studied numerically using the Princeton Ocean Model (POM) with 20 km horizontal resolution and 23 sigma levels conforming to a realistic bottom topography. A sixteen month control run was performed using climatological monthly mean wind stresses and restoring type salt and heat fluxes as surface forcing terms and observational oceanic inflow/outflow at the open boundaries. The seasonally averaged effects of isolated forcing terms are presented and analyzed from the following experiments: 1) non-linear effects removed, 2) wind effects removed, 3) open boundary inflow/outflow set to zero, and 4) open boundary inflow/outflow doubled. This procedure allowed analysis of spatial and temporal contributions of the isolated parameter to the general hydrology of the SCS and some of its specific features. A coastal jet is identified and analyzed, as are a mesoscale topographic gyre and several counter currents. Non-linearity is shown to be important to the energy and volume transport of baroclinic eddy features, but otherwise insignificant. Boundary transport from open lateral boundaries is determined to be of considerable importance to summer circulation and thermal structure, with little effect found for the winter monsoon hydrology. In general, monsoonal circulation patterns and upwelling phenomena are determined and forced by the wind, while boundary transport effects play a secondary role in determining the magnitude of the circulation velocities.
Book Synopsis Dynamical Mechanisms for the South China Sea Seasonal Circulation and Thermohaline Variabilities by :
Download or read book Dynamical Mechanisms for the South China Sea Seasonal Circulation and Thermohaline Variabilities written by and published by . This book was released on 1999 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seasonal ocean circulation and the seasonal thermal structure in the South China Sea (SCS) were studied numerically using the Princeton Ocean Model (POM) with 20-km horizontal resolution and 23 sigma levels conforming to a realistic bottom topography. A 16-month control run was performed using climatological monthly mean wind stresses, restoring-type surface salt and heat, and observational oceanic inflow/outflow at the open boundaries. The seasonally averaged effects of isolated forcing terms are presented and analyzed from the following experiments: 1) nonlinear dynamic effects removed, 2) wind effects removed, and 3) open boundary inflow/outflow set to zero. This procedure allowed analysis of the contribution of individual parameters to the general hydrology and specific features of the SCS: for example, coastal jets, mesoscale topographic gyres, and countercurrents. The results show that the POM model has the capability of simulating seasonal variations of the SCS circulation and thermohaline structure. The simulated SCS surface circulation is generally anticyclonic (cyclonic) during the summer (winter) monsoon period with a strong western boundary current, a mean maximum speed of 0.5 m s21 (0.95 m s21), a mean volume transport of 5.5 Sv (10.6 Sv) (Sv [106 m3 s21), and extending to a depth of around 200 m (500 m). During summer, the western boundary current splits and partially leaves the coast; the bifurcation point is at 148N in May and shifts south to 108N in July. A mesoscale eddy on the Sunda shelf (Natuna Island eddy) was also simulated. This eddy is cyclonic (anticyclonic) with maximum swirl velocity of 0.6 m s21 at the peak of the winter (summer) monsoon. The simulated thermohaline structure for summer and winter are nearly horizontal from east to west except at the coastal regions. Coastal upwelling and downwelling are also simulated: localized lifting (descending) of the isotherms and isohalines during summer (winter) at the west boundary.
Book Synopsis Ocean Circulation and Air-Sea Interaction in the South China Sea by : Dongxiao Wang
Download or read book Ocean Circulation and Air-Sea Interaction in the South China Sea written by Dongxiao Wang and published by Springer Nature. This book was released on 2022-10-28 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes achievements of the study on circulation and air–sea interaction and development of the ocean observation network in the South China Sea in the last 20 years, thus serving as a comprehensive reference book to understand the dynamic environment in the SCS. It consists of seven chapters, briefly reviewing our understanding of the SCS circulation and air–sea interaction in chapter 1, then describing in detail the upper layer circulation from large scale (SCS through flow, SCS western boundary current, etc.), to meso- and submeso-scale in Chapters 2 and 5, dilute river plume and coastal upwelling over the shelf in Chapter 3, deep ocean circulation in Chapter 4, tropical cyclone activities and air–sea flux at the interface in Chapter 6, and the construction of the observation network and database in Chapter 7. Besides the basic features of these physical processes, the book also discusses their variations and fundamental dynamics. Thus, it is written in a way that meets the different information demands from researchers working in various marine related fields.
Book Synopsis Regional Oceanography Of The South China Sea by : Jianyu Hu
Download or read book Regional Oceanography Of The South China Sea written by Jianyu Hu and published by World Scientific. This book was released on 2020-06-24 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to share newly obtained results and information on regional oceanography of the South China Sea by leading experts in fields such as water mass, circulation, mesoscale eddies, near-inertial motion, upwelling, mixing, continental shelf waves, internal waves and fronts. These comprehensive results can provide new insights on global and regional climate change.
Book Synopsis Seasonal Variability of Thermohaline Front in the Central South China Sea by :
Download or read book Seasonal Variability of Thermohaline Front in the Central South China Sea written by and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: An upper layer thermohaline front across the South China Sea (SCS) basin from the South Vietnamese coast (around 15 deg N) to Luzon Island (around 19 deg N) has been identified using the Navy's open domain Generalized Digital Environmental Model (GDEM) monthly mean temperature and salinity data on a O.5 deg X O.5 deg grid. This front does not occur at the surface in summer. The strength of this front is around 1 deg C/100 km at the surface and 1.4 deg C/100 km at the subsurface (50 m deep). A cross-basin current, inverted using the P-vector method is associating with the front. Meandering and eddies have been identified along this current. Seasonal and vertical variabilities of the thermohaline structure across this front are reported in this paper.
Book Synopsis The Oceanic Thermohaline Circulation by : Hendrik M. van Aken
Download or read book The Oceanic Thermohaline Circulation written by Hendrik M. van Aken and published by Springer Science & Business Media. This book was released on 2007-03-12 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a global hydrographic description of the thermohaline circulation, an introduction to the theoretical aspects of this phenomenon, and observational evidence for the theory. The hydrographic description and the observational evidence are based on data sources available via internet, mainly from the World Oceanographic Experiment (WOCE). The book also offers an introduction to hydrographic analysis and interpretation.
Book Synopsis Physical Oceanography of the Southeast Asian Waters by : Klaus Wyrtki
Download or read book Physical Oceanography of the Southeast Asian Waters written by Klaus Wyrtki and published by . This book was released on 1961 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ocean Exchange and Circulation by : Miroslav Gacic
Download or read book Ocean Exchange and Circulation written by Miroslav Gacic and published by MDPI. This book was released on 2020-12-10 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reduction of greenhouse gas emissions—particularly from fossil fuel-powered vehicles and airplanes by means of weight savings and leaner fuel consumption, helps to restrain environmental impacts. In general, for a variety of industries, and specifically in the case of transport, where both weight savings and increased energy efficiency are pursued, the use of metal–polymer multi-material structures has been growing at an increasing and particularly fast pace in recent years. Several manufacturing techniques have been, or are being, developed, with the aim of being used for producing dissimilar materials in cost-efficient manners. This book presents recent developments in the state of the art of advanced additive manufacturing and the joining of metal–polymer multi-material structures in transportation. This publication mainly focuses on the correlations between microstructure, manufacturing process (i.e., AddJoining, adhesive bonding, friction riveting, friction-based staking and friction spot joining) properties, and the mechanical performance of metal–polymer multi-material structures.
Book Synopsis The South China Sea by : Pinxian Wang
Download or read book The South China Sea written by Pinxian Wang and published by Springer Science & Business Media. This book was released on 2009-05-27 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pinxian Wang and Qianyu Li The South China Sea (SCS) (Fig. 1. 1) offers a special attraction for Earth scientists world-wide because of its location and its well-preserved hemipelagic sediments. As the largest one of the marginal seas separating Asia from the Paci?c, the largest continent from the largest ocean, the SCS functions as a focal point in land-sea int- actions of the Earth system. Climatically, the SCS is located between the Western Paci?c Warm Pool, the centre of global heating at the sea level, and the Tibetan Plateau, the centre of heating at an altitude of 5,000m. Geomorphologically, the SCS lies to the east of the highest peak on earth, Zhumulangma or Everest in the Himalayas (8,848m elevation) and to the west of the deepest trench in the ocean, Philippine Trench (10,497m water depth) (Wang P. 2004). Biogeographically, the SCS belongs to the so-called “East Indies Triangle” where modern marine and terrestrial biodiversity reaches a global maximum (Briggs 1999). Among the major marginal sea basins from the west Paci?c, the SCS presents some of the best conditions for accumulating complete paleoclimatic records in its hemipelagic deposits. These records are favorable for high-resolution pa- oceanographic studies because of high sedimentation rates and good carbonate preservation. It may not be merely a coincidence that two cores from the southern 14 SCS were among the ?rst several cores in the world ocean used by AMS C dating for high-resolution stratigraphy (Andree et al. 1986; Broecker et al. 1988).
Book Synopsis P-Vector Inverse Method by : Peter C. Chu
Download or read book P-Vector Inverse Method written by Peter C. Chu and published by Springer Science & Business Media. This book was released on 2007-02-15 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: A major task for physical oceanographers is to determine the movement of oceanic water from observations. This book introduces the P-vector inverse method, with a two-step determination of the velocity from hydrographic data. The book provide insights into the basics of the P-vector inverse method and the features of the inverted global and regional ocean circulations. Upper undergraduate and graduate students as well as oceanographers, marine biologists and other environmental scientists will find this book a valuable tool for their studies.
Book Synopsis Physics and Biogeochemistry of the East Asian Marginal Seas by : SungHyun Nam
Download or read book Physics and Biogeochemistry of the East Asian Marginal Seas written by SungHyun Nam and published by Frontiers Media SA. This book was released on 2022-11-08 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Resolution Numerical Modelling of the Atmosphere and Ocean by : Kevin Hamilton
Download or read book High Resolution Numerical Modelling of the Atmosphere and Ocean written by Kevin Hamilton and published by Springer Science & Business Media. This book was released on 2007-12-25 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This highly relevant text documents the first international meeting focused specifically on high-resolution atmospheric and oceanic modeling. It was held recently at the Earth Simulator Center in Yokohama, Japan. Rather than producing a standard conference proceedings volume, the editors have decided to compose this volume entirely of papers written by invited speakers at the meeting, who report on their most exciting recent results involving high resolution modeling.
Book Synopsis Ocean Circulation by : Rui Xin Huang
Download or read book Ocean Circulation written by Rui Xin Huang and published by Cambridge University Press. This book was released on 2010 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt: It provides a concise introduction to the dynamics and thermodynamics of oceanic general circulation.
Download or read book Oceanology written by and published by . This book was released on 2007 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of the Princeton Ocean Model Using South China Sea Monsoon Experiment (SCSMEX) Data by :
Download or read book Evaluation of the Princeton Ocean Model Using South China Sea Monsoon Experiment (SCSMEX) Data written by and published by . This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Princeton Ocean Model (POM) has been implemented in the South China Sea for hindcast of circulation and thermohaline structure. A two-step technique is used to initialize POM with temperature, salinity, and velocity for 1 April 1998 and integrate it from 1 April 1998 with synoptic surface forcing for 3 months with and without data assimilation. Hydrographic and current data acquired from the South China Sea Monsoon Experiment (SCSMEX) from April through June 1998 are used to verify, and to assimilate into, POM. The mean SCSMEX data (Apr-Jun 1998) are about 0.5 deg C warmer than the mean climatological data above the 50-m depth, and slightly cooler than the mean climatological data below the 50-m depth, and are fresher than the climatological data at all depths and with the maximum bias (0.2-0.25 ppt) at 75-m depth. POM without data assimilation has the capability to predict the circulation pattern and the temperature field reasonably well, but has no capability to predict the salinity field. The model errors have Gaussian-type distribution for temperature hindcast, and non-Gaussian distribution for salinity hindcast with six to eight times more frequencies of occurrence on the negative side than on the positive side. Data assimilation enhances the model capability for ocean hindcast, if even only conductivity-temperature-depth (CTD) data are assimilated. When the model is reinitialized using the assimilated data at the end of a month (30 Apr; 31 May 1998) and the model is run for a month without data assimilation (hindcast capability test), the model errors for both temperature and salinity hindcast are greatly reduced, and they have Gaussian-type distributions for both temperature and salinity hindcast. Hence, POM gains capability in salinity hindcast when CTD data are assimilated.
