共查询到20条相似文献，搜索用时 31 毫秒
1.
《海洋学报》1991,(1)
l一l。”。.。。。。。。。。.。。“。。。。”1一13二。二。二。二。二。。.。。.。。.。1一25二。二。二。二。……。.。。二1一37”。。”一。..~,”.。..。”The equil一br一um ra昭e of wind wavef佗queney sPeetrum尸en Shen即加n了(s.C.分e,)(文圣常),Zhan了Dacuo(张大错),Ch,n .ohai(陈波海)an口Guo pei为心(郭佩芳)Combi此d refraetion andd一f企ra‘一on models for sea waves over eomPlieatedtopograPhy and with eurrents in shallow waterYin Baoshu(尹宝树)and Jiang Deeai(蒋德才)Seasonal respol朽七5 of monthl y… 相似文献
2.
《海洋学报(英文版)》1988,(4)
Marine Hydrology1TheotetiealtrU】11wind wavefrequeney sPeetra in deeP water一1.Form of sPee-andShe户碧cha塔(S.C于婉,,)(文圣常).Zlla,瞥Daeuo(张大错),Clle,:Bohai(陈波海)Guo Peifal诊(郭佩芳)l7The aPPlieation of wave refraetion一diffractio一1 nlodel with frietion7必一毋Decai(蒋德才)and Ye Al:le(叶安乐)27The effeet of horlzontal八刀,211150,Ig(范植松)Coriolis force oninternal wave一mean flow interaetion159Theoretical wind wave frequeneyand verification of sPeetra肠n Shengclla声瞥(S.C环乞… 相似文献
3.
《海洋学报(英文版)》1990,(4)
Marine Hydrologyl·····,·····,·····,·········……The equilibrium range of wind wave frequency spectrum wi砚5‘,绍‘扒夕(5.‘.”h沙)(文圣常),z加爪夕建灿。妇(张大错),〔〕饭,及汤面(陈波海)耐G翻尹如尹翻夕 (郭佩芳)13·,,···················,·····,·…伪mbined refraetion andd‘ffraetion models for sea wa低over comPlieated toPograPhy andw亘th eur- te月ts jn shallow water 玩及侧昭尹如(尹宝树)耐J如吩八”翻(蒋德才)25-···.--····-·····-·····… 相似文献
4.
《海洋学报》1992,(1)
Marine Hydrology一l·····……E,t imation of wat,r vol叹爪,tran3port3 throu‘h main stra!ts ort、”Eagt Cl‘inas“a Zhao刀。ore。(赵保仁)and Fa,夕‘”OhO”夕(方国洪)1一15······……T卜户e二f Oc七of intolnal tid,5 on thev,rt!cal structur,of tidal culront in tho North Huaugha!Sea Zhao Jon。人e”夕(赵浚仁),‘eog夕hfj‘。。夕(耿世江),Son万001￡a”,(刹、洪亮)and Zhaog 2111(于长自历)1一37······……Surfaeod呈弓tribution of alkalinity ands,eeifie alkalinit犷and thoir apPlieation to… 相似文献
5.
《海洋学报》1993,(1)
Marine HydrologyCross thermoel!nem盆x!ng effeet due tot!de in the shallow seayan夕D亡aoro:夕(杨殿荣),Z入00 Dejfa。(周德坚)and Zhan夕Yulfn(张玉林)LAGFD一WAM numeriealapplleationwave model一1 .Charaeter!sties笼nlaid seheme and!tsY“ao Yelf(袁业立)(孙乐涛)Hoa Fen夕(华锋),Pao Ze”夕d‘(潘增弟)ands“”Letao2一157......……2一叉了9…‘”””“2一13口·…,,-…3一3生7.·....……3一33卜··.·.……3一343.·..……”3一367··..·.……3一375··....……4一471·.……。…The study on the numer!eal … 相似文献
6.
《海洋地质与第四纪地质》1991,(4)
第】用海台及其性质的初步分析…………………………………·。…·,………………··张 抗(1)黄河1964—1976年刁口流路泥沙冲淤及其特点………………………黄世光 王志豪(15)鲁甫地区第四系河流砂金成矿特征的研究…………………·。…………………·朱成文(29)东海某井两类河流相沉积…。…………··,………………………………………··陈建文(41)东海海底地形趋势分析……………··。·,………………………………·林美华 李常珍(47)福建九龙江口入海泥砂的扩散和河口湾的现代沉积…………………………蔡爱智等(57)南海涸洲岛区现代… 相似文献
7.
Sui Shifeng 《海洋学报(英文版)》1990,9(3):343-352
Owing to the fact that the wind speed and direction of typhoon vary rapidly with time and space in typhoon fetch; the nearer to the typhoon eye the greater the wind velocity, and the shorter the wind fetch the smaller the wind time,as a result,the more difficult for the wind wave to fully grow. Hence.in typhoon wave numerical calculation it is impossible to use the model for a fully grown wave spectrum. Lately, the author et at. presented a CHGS method for numerical forecasting of typhoon waves, where a model for the growing wave spectrum was set up (see Eq. (2) in the text). The model involves a parameter indicating the growing degree of wind wave, i. e. ,the mean wave age β. When βvalue is small, the wave energy is chiefly concentrated near the peak frequency, so that the spectral peak gets high and steep; with the increase of β the spectral shape gradually gets lower and gentler; when β=Ⅰ, the wave fully grows, the growing spectrum becomes a fully grown P-M spectrum. The model also shows a spect 相似文献
8.
9.
10.
Examination of wind-wave interaction source term in WAVEWATCH III with tropical cyclone wind forcing
Results of drag coefficient(CD) from field observations and laboratory wave tank experiments indicate that the operational wave model can overestimate wind energy input under high wind conditions. The wind-wave interaction source term in WAVEWATCH Ⅲ has been modified to examine its behavior with tropical cyclone wind forcing. Using high resolution wind input,numerical experiments under idealized wind field and tropical cyclone Bonnie(1998) were designed to evaluate performance of the modified models. Both experiments indicate that the modified models with reduced CD significantly decrease wind energy input into the wave model and then simulate lower significant wave height(SWH) than the original model. However,the effects on spatial distribution of SWH,mean wavelength,mean wave direction,and directional wave spectra are insignificant. Due to the reduced wind energy input,the idealized experiment shows that the modified models simulate lower SWH than the original model in all four quadrants. The decrease in the front quadrants is significantly larger than that in the rear quadrants;it is larger under higher winds than lower winds. The realistic experiment on tropical cyclone Bonnie shows that the modified model with the various downward trends of CD in high winds creates a simulation that agrees best with scanning radar altimeter observations. 相似文献
11.
In the present paper, by introducing the effective wave elevation, we transform the extended ellip- tic mild-slope equation with bottom friction, wave breaking and steep or rapidly varying bottom topography to the simplest time-dependent hyperbolic equation. Based on this equation and the empirical nonlinear amplitude dispersion relation proposed by Li et al. (2003), the numerical scheme is established. Error analysis by Taylor expansion method shows that the numerical stability of the present model succeeds the merits in Song et al. (2007)’s model because of the introduced dissipation terms. For the purpose of verifying its performance on wave nonlinearity, rapidly vary- ing topography and wave breaking, the present model is applied to study: (1) wave refraction and diffraction over a submerged elliptic shoal on a slope (Berkhoff et al., 1982); (2) Bragg reflection of monochromatic waves from the sinusoidal ripples (Davies and Heathershaw, 1985); (3) wave transformation near a shore attached breakwater (Watanabe and Maruyama, 1986). Comparisons of the numerical solutions with the experimental or theoretical ones or with those of other models (REF/DIF model and FUNWAVE model) show good results, which indicate that the present model is capable of giving favorably predictions of wave refraction, diffraction, reflection, shoaling, bottom friction, breaking energy dissipation and weak nonlinearity in the near shore zone. 相似文献
12.
The popular methods to estimate wave height with high-frequency(HF) radar depend on the integration over the second-order spectral region and thus may come under from even not strong external interference. To improve the accuracy and increase the valid detection range of the wave height measurement, particularly by the smallaperture radar, it is turned to singular peaks which often exceed the power of other frequency components. The power of three kinds of singular peaks, i.e., those around ±1,±2~(1/2) and ±1(2~(1/2)) times the Bragg frequency, are retrieved from a one-month-long radar data set collected by an ocean state monitoring and analyzing radar,model S(OSMAR-S), and in situ buoy records are used to make some comparisons. The power response to a wave height is found to be described with a new model quite well, by which obvious improvement on the wave height estimation is achieved. With the buoy measurements as reference, a correlation coefficient is increased to 0.90 and a root mean square error(RMSE) is decreased to 0.35 m at the range of 7.5 km compared with the results by the second-order method. The further analysis of the fitting performance across range suggests that the peak has the best fit and maintains a good performance as far as 40 km. The correlation coefficient is 0.78 and the RMSE is 0.62 m at 40 km. These results show the effectiveness of the new empirical method, which opens a new way for the wave height estimation with the HF radar. 相似文献
13.
Nelson pointed out that the wave breaking criterion(H/d)_b for gentle slopes(i<1/100),inwhich H is the wave height and d is the water depth at the breaking point,is smaller than that for beachslopes of i>1/100),i.e.,the value of(H/d)_b for gentle slopes may be smaller than 0.6.Goda indicatedthat the wave breaking criterion given by himself is a result based on theoretical study,so it should be alsocorrect and can be used for gentle beaches,i.e.,the value of(H/d)_b for gentle slopes may be still largerthan 0.7.By use of high order nonlinear wave theory,this problem is analyzed in this study and the reasonwhy there is a large difference between different studies is explained.Moreover,the bottom energy loss dur-ing wave propagation is considered and the critical slope for the absence of wave breaking is also analyzed. 相似文献
14.
《海洋学报(英文版)》1993,(4)
Marine Hydrologyl············……Fronts and transport of suspended matter zn the Ha叩见hou浅y Su Jiza,(苏纪兰),Wa,9 Ka、那ha,(王康塔)andL,Ya。(李炎)1,············……Hydrographie features of the plume front in the Hangzhou翔y 环几王n君Ka,gsha二(王康塔)and Su了ttan(苏纪兰)2,1··········,··…Residual eurrents in plume front zone of the Hangzhou枷yche,w‘i(陈伟),月“angD‘户(黄大吉)andya,92人a阅Ing(杨昭庆)39··,·········……Suspended sediment tra… 相似文献
15.
16.
Internal solitary wave propagation over a submarine ridge results in energy dissipation, in which the hydrodynamic interaction between a wave and ridge affects marine environment. This study analyzes the effects of ridge height and potential energy during wave-ridge interaction with a binary and cumulative logistic regression model. In testing the Global Null Hypothesis, all values are p＜0.001, with three statistical methods, such as Likelihood Ratio, Score, and Wald. While comparing with two kinds of models, tests values obtained by cumulative logistic regression models are better than those by binary logistic regression models. Although this study employed cumulative logistic regression model, three probability functions 1, 2 and 3, are utilized for investigating the weighted influence of factors on wave reflection. Deviance and Pearson tests are applied to check the goodness-of-fit of the proposed model. The analytical results demonstrated that both ridge height (X1) and potential energy (X2) significantly impact (p＜0.0001) the amplitude-based reflected rate; the P-values for the deviance and Pearson are all ＞0.05 (0.2839, 0.3438, respectively). That is, the goodness-of-fit between ridge height (X1) and potential energy (X2) can further predict parameters under the scenario of the best parsimonious model.Investigation of 6 predictive powers (R2, Max-rescaled R2, Somers''D, Gamma, Tau-a, and c, respectively) indicate that these predictive estimates of the proposed model have better predictive ability than ridge height alone, and are very similar to the interaction of ridge height and potential energy. It can be concluded that the goodness-of-fit and prediction ability of the cumulative logistic regression model are better than that of the binary logistic regression model. 相似文献
17.
《海洋与湖沼》1979,(4)
乎稳正态过程反正弦定律在海浪谱估计中的应用‘,,:,…:,:,,。,:,:一,,::”,,,·,‘···……余宙文、蓝昌华(l)莱州湾西岸晚第四纪海相地层及其沉积环境的初步研究叭..凡··········..~·……,·…‘····……王绍鸿(9--)户国双星藻科植物研究仁峥”,,..、...尸,.’.,,’”t’.’,”·二,…,·,·,’·,..·..···~·一:二··……,饶钦止、胡鸿钧(24)温度对条斑紫菜丝状体生长发育的影响····……任国忠、崔广法;费修埂、曾呈奎、李楚朴、刘清晨(28)不同氮肥对条斑紫菜丝状体生长发育的影响::,,:,,,,,::,:、,…:,,二:,… 相似文献
18.
19.
Li Luping 《海洋学报(英文版)》1997,16(1):45-56
In this paper, it is held that the universal relationships of wave growth in fetch-limited conditions , i. e.,(f|~) p=A(x|~)-Band (m|~)0= C(x|~) Dshould satisfy the Toba 3/2 power law and the wave energy balance equation. In the ideal generation situation, theoretically it can be derived that the ideal fetch-limited wave growth relationship should have D=3B and D B =1, (i.e., B = 0.25, D = 0.75 ) and A3C=2. 1×l(T4C~(1/2)_d , where Cd is the drag coefficient. The 3/2 power law, the wave energy balance equation and the decrease of wave steepness with increasing fetch have became three requirements which should be satisfied by fetch-limited wave growth algorithms. A semi-empirical and semi-theoretical model for fetch-limited wave growth is presented. In the application to the slanting wind situation an un(?)ersal relationship of dimensionless wave energy vs dimensionless peak frequency is presented and the comparisons show that the model is in good agreement with observations. 相似文献
20.
Evaluation of Inference Adequacy in Cumulative Logistic Regression Models： An Empirical Validation of ISW-Ridge Relationships 总被引：3，自引：0，他引：3
Internal solitary wave propagation over a submarine ridge results in energy dissipation, in which the hydrodynamic interaction between a wave and ridge affects marine environment. This study analyzes the effects of ridge height and potential energy during wave-ridge interaction with a binary and cumulative logistic regression model. In testing the Global Null Hypothesis, all values are p<0.001, with three statistical methods, such as Likelihood Ratio, Score, and Wald. While comparing with two kinds of models, tests values obtained by cumulative logistic regression models are better than those by binary logistic regression models. Although this study employed cumulative logistic regression model, three probability functions p^1, p^2 and p^3, are utilized for investigating the weighted influence of factors on wave reflection. Deviance and Pearson tests are applied to check the goodness-of-fit of the proposed model. The analytical results demonstrated that both ridge height (X1) and potential energy (X2) significantly impact (p<0.0001) the amplitude-based reflected rate; the P-values for the deviance and Pearson are all >0.05 (0.2839, 0.3438, respectively). That is, the goodness-of-fit between ridge height (X1) and potential energy (X2) can further predict parameters under the scenario of the best parsimonious model.Investigation of 6 predictive powers (R2, Max-rescaled R2, Somers'D, Gamma, Tau-a, and c, respectively) indicate that these predictive estimates of the proposed model have better predictive ability than ridge height alone, and are very similar to the interaction of ridge height and potential energy. It can be concluded that the goodness-of-fit and prediction ability of the cumulative logistic regression model are better than that of the binary logistic regression model. 相似文献