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Representation of microscale ocean wavenumber spectrum correct to the second order

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science China Earth sciences 2005年第4期48卷 549-554页

作者： YUAN Yeli2.& HUA Feng1,2.3 1. Institute of Oceanology, Chinese Academy of sciences, qingdao 2.6071, China {2., state oceanic administration, qingdao 2.6061, China 3. Graduate School of the Chinese Academy of sciences, Beijing 100039, China key laboratory of {2. {2. and numerical modeling State Oceanic Administration Qingdao China Institute of Oceanology Chinese Academy of Sciences Qingdao China Graduate School of the Chinese Academy of sciences Beijing China

In this paper, the analytical representations of four wave source functions in high-frequency spectrum range are given on the basis of ocean wave theory and dimensional analysis, and the perturbation method is used to solve the governing equations of ocean wave high-frequency spectrum on the basis of the temporally stationary and locally homogeneous scale relations of microscale wave. The microscale ocean wavenumber spectrum correct to the second order has an explicit structure, its first order part represents the equilibrium between dif- ferent source functions, and its second order part represents the contribution of microscale wave propagation.

关键词： temporally stationary and locally homogeneous, source function in high-frequency spectrum range, microscale ocean wavenumber spectrum.

AN EXTENDED modeling OF TIDE-WAVE MOTION

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Journal of Hydrodynamics 2001年第3期13卷 100-106页

作者： Zhang Qing hua, Xu Hao, Qu Yuan yuan First Institute of Oceanography, state oceanic administration, qingdao 2.6061, China {2. {2. of marine science and numerical modeling, state oceanic administration, qingdao 2.6061, China First Inst. of Oceanography State Oceanic Administration Qingdao 266061 China

By vertical boundary conditions, a spectral expansion of horizontal tide wave velocity is done in vertical direction in terms of a complete basis functions selected properly, hence a relation between tide levels and spectral components is found theoretically under condition of ignoring the horizontal friction stress and nonlinear effect. And a relation between bottom friction of tide current, which satisfies the viscous condition on sea bottom, and tide levels is determined. The relation is different from the relation of the traditional parameterizing of bottom friction. Moreover integration of the continuity equation and momentum equations is carried out in the vertical direction using zero flux condition on solid boundaries and inputting condition on open boundaries, and then a boundary value problem of elliptic form on the tide levels is constructed.

关键词： tide waves basis function spectral expansion bottom friction

THE RE-DERIVATION OF THE VORTICITY EQUATION OF THE LAYERED FLOW OF THE SHALLOW SEA

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Journal of Hydrodynamics 2001年第3期13卷 10-16页

作者： Zhang Qing-hua, Li Jian ke, Qu Yuan yuan First Institute of Oceanography, state oceanic administration, qingdao 2.6061, China {2. {2. of marine science and numerical modeling, state oceanic administration, qingdao 2.6061, China First Inst. of Oceanography State Oceanic Administration Qingdao 266061 China

The scale analysis of the layered flow problem of the shallow sea shows that the parameter of E V represented the relative thickness of the friction layer is the little value larger than Rossby number. This illustrates that they are not ignorable and the important control factors of the layered flow although friction effect is only limited within interface Ekman layer and bottom Ekman layer. Using larger little parameter E V as the little perturbation parameter is more reasonable than using the classical Rossby number ε. By using the perturbation expansion and doing the researches of the structure of the Ekman layer on the sea surface, sea bottom and interface, a group of new layered flow vorticity equation is derived. It combines the vorticity of the flow of every layer, the inclination of the interface, the inclination of the sea bottom and the wind stress vorticity on the sea surface. Different from the conventional vorticity equation, which derived by using Rossby number as little parameter and is applied to large scale motion, it allows relatively large interfaces fluctuation, even it is applied to the problem that interface touch the bottom or touch the sea surface.

关键词： interface Ekman layer interface fluctuation touch the bottom touch the sea surface

The coupling instability of Rossby and topographic Rossby waves in the equatorial area

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science China Earth sciences 2005年第10期48卷 1792-1801页

作者： CHAO Jiping1,2. LIU Lin1,3 & YU Weidong1 1. laboratory of marine {2. and numerical modeling, state oceanic administration, qingdao 2.6061, China 2. National Research Center for marine Environmental Forecasts, state oceanic administration, Beijing 100081, China 3. Ocean University of China, qingdao 2.6003, China state oceanic {2. Ocean University of China

In case of considering the fact that the tropical ocean thermocline or the lower at-mosphere height field has the meridional variation, the topographic Rossby wave will be excited. Also the background geostrophic current emerges. Under such conditions, the topographic Rossby wave can interact with the classical Rossby wave at some parameter band and thus brings a new kind of instability, which may be of potential application in understanding some phenomena of the ENSO cycle.

关键词： thermocline variation, equatorial jet, Rossby wave, topographic Rossby wave, coupling instability

A COMPARATIVE STUDY OF SPECTRAL METHODS WITH SEA WAVE DATA

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Journal of Hydrodynamics 2000年第4期12卷 59-65页

作者： Zhang Shu-wen Sun Fu key laboratory of {2. {2. and numerical modeling State Oceanic AdministrationQingdao 266003P.R.China qingdao University Qingdao 266071P.R.China key laboratory of {2. {2. and numerical modeling State Oceanic Administration

Two spectral methods are used to study sea wave data. Firstly, the estimated results calculated by the sequency spectrum method and frequency spectrum method are compared, and then the differences between the two methods are discussed. Furthermore, compared with frequency spectral analysis, sequency spectral analysis has many advantages: faster calculating speed, convenient use and high distinguishability.

关键词： sequency spectrum frequency spectrum sea wave data

The relationship between sea surface temperature anomaly and wind energy input in the Pacific Ocean

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Progress in Natural science:Materials International 2009年第10期19卷 1409-1412页

作者： Chuanjiang Huang,Fangli Qiao key laboratory of {2. {2.s and numerical modeling,The First Institute of Oceanography,state oceanic administration,qingdao 2.6061,China key laboratory of {2. {2.s and numerical modeling The First Institute of Oceanography State Oceanic Administration Qingdao 266061 China

The relationship between sea surface temperature anomaly(SSTA) and wind energy input in the Pacific Ocean over the period of 1949-2.03 is studied by using daily-mean NOAA/NCEP wind stress and monthly mean Reynolds SST *** results indicate the strong negative correlation between SSTA and local wind energy input to surface waves in most of the domain at low and middle *** SST is low(high) during the years with more(less) wind energy *** correlation coefficients are high in the central and eastern tropical Pacific and the central midlatitude North Pacific at the decadal scale,and in the central tropical Pacific at the interannual *** mixing processes in the upper ocean are closely associated with wind energy input,indicating that wind energy input may play an important role in interannual and decadal variability in the Pacific Ocean via regulating vertical mixing.

关键词： Wind energy Interannual and decadal variability SSTA Vertical mixing

A detection model of underwater topography with a series of SAR images acquired at different time

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Acta Oceanologica Sinica 2010年第4期29卷 28-37页

作者： YANG Jungang ZHANG Jie MENG Junmin The First Institute of Oceanography State Oceanic Administration Qingdao 266061 China key laboratory of {2. {2. and numerical modeling （MASNUM） State Oceanic Administration Qingdao 266061 China

underwater topography is one of oceanic features detected by Synthetic Aperture *** topography SAR imaging mechanism shows that tidal current is the important factor for underwater topography SAR *** under the same wind field condition,SAR images for the same area acquired at different time include different information of the underwater *** utilize synchronously SAR images acquired at different time for the underwater topography SAR detection and improve the precision of detection,based on the detection model of underwater topography with single SAR image and the periodicity of tidal current,a detection model of underwater topography with a series of SAR images acquired at different time is developed by combing with tide and tidal current numerical *** testify the feasibility of the presented model,Taiwan Shoal located at the south outlet of Taiwan Strait is selected as study area and three SAR images are used in the underwater topography *** detection results are compared with the field observation data of water depth carried out by R/V Dongfanghong 2.and the errors of the detection are compared with those of the single SAR *** comparisons show that the detection model presented in the paper improves the precision of underwater topography SAR detection,and the presented model is feasible.

关键词： underwater topography SAR image Taiwan Shoal tide and tidal current

Rare earth elements-rich phase and enriching mechanism in sediments from CC area, the Pacific Ocean

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Acta Oceanologica Sinica 2001年第2期20卷 209-214页

作者： Meng Xianwei, Chen Zhihua, Wang Xiangqin, Liu Na (1. First Institute of Oceanography, state oceanic administration, qingdao 2.6003, China 2. {2. Lab. of {2. science and numerical Modelling, state oceanic administration, qingdao 2.6003, China) First Institute of Oceanography State Oceanic Administration Key Lab. of Marine Sci./Numerical Mo Qingdao 266003 China

Compared to North American shale composition (NASC), REE contents of sediments from the CC area in the Pacific Ocean are obviously high except that cerium has equal content to that of NASC. Three-valence rare earth elements were completely enriched in phosphate-phase and cerium in iron-phase. Rare earth elements in the sediments were originally derived from seawater. During lithi- genic and minerogenic processes of metalliferous nodules, three-valence rare earth elements in sediments mobilized and incorporated into sediments as authigenous biogenic-apatite, while cerium had change from Ce3+ to Ce4+ and directly precipitated from seawater and entered metalliferous nodules and caused Ce anomalies in REE pattern in sediments.

关键词： CC area of the Pacific Ocean sediments rare earth elements REE- rich phase enriching mechanism

numerical experiments of HAB inducement in qingdao adjacent coastal area

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Acta Oceanologica Sinica 2010年第5期29卷 109-120页

作者： LIU Xuehai LI Ruixiang YUAN Yeli College of Physical and Environmental Oceanography Ocean University of China Qingdao 266100 China First Institute of Oceanography State Oceanic Administration Qingdao 266061 China key laboratory of {2. {2. and numerical modeling State Oceanic Administration First Institute of Oceanography State Oceanic Administration Qingdao 266061 China

A three-dimension ecological dynamic model was established to numerically study the relationship of HAB and environmental *** numerical experiments showed that the growth of diatom,the dominant HAB specie,was mainly restricted by phosphate and *** the concentrations of phosphate and silicate reach 17-2. μg/L and 300-375 μg/L respectively,the water is in a {2. of *** phosphate and silicate up to 2.-32.μg/L and 350-500 μg/L respectively,HAB could be *** major regions of HAB occurrence are Jiaozhou Bay mouth,coastal bays,and coastal area from Maidao to *** avoid HAB occurrence,concentration of phosphate and silicate should not exceed 17-2. μg/L and 300 μg/L as a *** control of pollutant discharge is a key point to prevent water eutrophication and HAB occurrence.

关键词： HAB numerical model marine ecosystem dynamics environmental condition