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| 1 | A novel high resolution model without open boundary conditions applied to the China Seas: first investigation on tides显示文摘We developed a Global Ocean Circulation and Tide Model (GOCTM) with coarse grids in the open deep ocean degrading ‘smoothly’ into the highly resolved China Seas (CS) of refined grids to study the tides and circulation there.GOCTM is based on the framework of the Finite Volume approach for better mass conservation through improved transports across the discrete individual control volume.It also takes a full advantage of the geometric flexibility of unstructured mesh using a realistic global topography including the Arctic Ocean.The CS are given a special focus by refining the unstructured grids,but they are embedded into global domain naturally.Furthermore,GOCTM not only successfully avoids the treatment of the open boundaries,but also optimizes the trade-off between computational cost and model accuracy.Meanwhile,GOCTM is driven by the astronomical tide-generating potential and the secondary tide-generating potential directly,together with the wind stress and heat flux.GOCTM succeeds in reproducing the global eight principal tidal harmonic constants.Particularly,the simulated tidal results in the CS are improved compared to some other regional models with the discrepancy of 3.9 cm for M 2 tide.This idea of GOCTM can also be referred for other regional ocean study. | YU Huaming CHEN Xueen BAO Xianwen Thomas Pohlmann WU Dexing | 2010 | Acta Oceanologica Sinica2010，29，6： | 5 |
| 2 | Sea Experiments of the Underway Conductivity-Temperature-Depth Prototype Made in China显示文摘A new instrument for upper ocean survey, namely the UCTD (Underway Conductivity-Temperature-Depth), which combines some of the advantages of other underway instruments, is introduced in this paper. The Introduction section presents a description of the construction and function of the UCTD, and the experiments conducted in the South China Sea on board the R/V Dong Fang Hong 2 in July 2007 and August 2008. The UCTD system, with pressure and temperature sensors in the probe, is con- veniently portable, cost-effective and environment-friendly. It is hopefully suitable for future cruises. An intercomparison based on regressing with the experiment temperature data from both SeaBird plus911 CTD and the UCTD showed that the standard deviation is 0.88℃ and the correlation coefficient is 0.96, achieving the goals set for the current oceanography uses. In the hydrodynamic experiments, the descending velocities and depths were calculated for different ship speeds. A pulling test was designed with a tensiometer to measure the magnitude of the pull. The maximal tension of the line was found to be 66.2 kg, which is far lower than the bearing limit of the Hollow Spectra line. Finally, some improvement suggestions are put forward for future experiments and production. | SONG Xiangzhou LI Hui LIN Xiaopei CHEN Xueen GUO Xinshun TIAN Jiwei | 2009 | Journal of Ocean University of China2009，8，4： | 4 |
| 3 | Numerical study of current fields near the Changjiang Estuary and impact of Quick-EnKF assimilation显示文摘A 30-d current numerical simulation is running for the Yangshan Port,the Changjiang Estuary,the Hangzhou Bay and their adjacent seas using a finite volume coastal ocean model (FVCOM),with Changjiang River runoff and wind effect being considered.At the open boundary,this model is driven by the water level obtained from prediction including eight main partial tides.After the harmonic analysis,the cotidal chart and the iso-amplitude line as well as the current ellipse distribution map are displayed to illustrate the propagation property of a tidal wave.Horizontal velocity of both the U and V components coincides with the actual measurement,which shows that the model result is credible to describe the hydrodynamic pattern in this sea area.On this basis,real-time current data from high-frequency radar is assimilated with the implementation of quick ensemble Kalman filter,which takes the variation tendency of the state vector to compute the analysis field,instead of integrating the field for N (the number of ensemble) times as it used to in the standard EnKF,aiming at raising the efficiency of computation,reducing the error of prediction and at the same time,improving the forecast effect. | CHEN Xueen ZHAN Peng CHEN Jinrui QIAN Hongbao | 2011 | Acta Oceanologica Sinica2011，30，5： | 4 |
| 4 | Numerical study of M_2 internal tide generation and propagation in the Luzon Strait显示文摘Based on the z-coordinate ocean model HAMSOM,we introduced the internal-tide viscosity term and applied the model to numerically investigate the M2 internal tide generation and propagation in the Luzon Strait (LS).The results show that (1) in the upper 250 m depth,at the thermocline,the maximum amplitude of the generated internal tides in the LS can reach 40 m;(2) the major internal tides are generated to the northwest of Itbayat Island,the southwest of Batan Island and the northwest of the Babuyan Islands;(3) during the propagation the baroclinic energy scattering and reflection is obvious,which exists under the effect of the specific topography in the South China Sea (SCS);(4) the westward-propagating internal tides are divided into two branches entering the SCS.While passing through 118 E,the major branch is divided into two branches again.The strongest internal tides in the LS are generated to the northwest of Itbayat Island and propagate northeastward to the Pacific.However,to the east of 122 E,most of the internal tides propagate southeastward to the Pacific as a beam. | LI Huan SONG Dan CHEN Xueen QIAN Hongbao MU Lin SONG Jun | 2011 | Acta Oceanologica Sinica2011，30，5： | 3 |
| 5 | A numerical study of generation and propagation of type-a and type-b internal solitary waves in the northern South China Sea显示文摘Numerical simulations based on a high-resolution three-dimensional MIT general circulation model(MITgcm)using realistic topography and tidal forcing are conducted to investigate the generation and propagation of the so-called type-a waves(large-amplitude rank-ordered wave packets)and type-b waves(isolated wave packets)in the northern South China Sea.At first,we summarized and analyzed the generation and propagation characteristics of these waves.Then,energy budget at the Luzon Strait is calculated.Energy generation has three local maxima every day,of which the largest one corresponds to the emergence of the type-a wave.Energy flux at the west boundary of the Luzon Strait shows two local maxima each day.The larger one is consistent with the generation of the type-a wave and the smaller one is in correspondence with the generation of the type-b wave.Sensitivity experiments are designed to explore the role of the east and west ridge of the Luzon Strait on the generation and propagation of the type-a and type-b waves.It is found that the east ridge is indispensable on the generation of the type-a wave while the west ridge has little contribution.The west ridge diminishes the type-a waves'amplitude but hardly changes their propagation speed.The type-b waves also come from perturbation signals which originate from the east ridge and are enhanced in amplitude and reduced in propagation speed by the west ridge. | Zhi Zeng Xueen Chen Chunxin Yuan Shengquan Tang Lequan Chi | 2019 | Acta Oceanologica Sinica2019，38，11： | 2 |
| 6 | Assimilation of surface currents into a regional model over Qingdao coastal waters of China显示文摘雷达穿的高频率(HF ) 测量的表面水流基于 Kalman 过滤器方法在 Qingdao 沿海的水上被吸收进一个地区性的海洋模型。一系列数字实验被执行评估数据吸收计划的性能。以便在传统的整体 Kalman 过滤器(ENKF ) 优化分析过程,一个不同分析计划把 quasiensemble 称为 Kaman 过滤器(QENKF ) 被建议。在 ENKF 和 QENKF 之间的比较两个都建议那他们能改进模仿的错误和空间结构。背景错误协变性(BEC ) 的评价被比较三个不同方法也估计:蒙特卡罗方法;加拿大的快协变性(CQC ) 方法和数据无常引擎(到期) 方法。在模型结果和 CQC 方法能更好为这沿海的海洋复制错误统计的观察表演之间的错误建模的 root-mean-square (RMS ) 的重要减小并且相应外部强迫。另外,到整体尺寸的数据吸收系统的敏感也借助于在实验使用的整体尺寸的不同规模被分析。它被发现那给计算费用和预报精确性的平衡, 50 的整体尺寸将是 Qingdao 沿海的水里的一种适当选择。 | ZHAO Jian CHEN Xueen XU Jiangling HU Wei CHEN Jinrui Pohlmann Thomas | 2013 | Acta Oceanologica Sinica2013，32，7： | 2 |
| 7 | Numerical investigation of internal solitary waves from the Luzon Strait: Generation process, mechanism and three-dimensional effects显示文摘 | Guo Chuncheng Chen Xueen Vlasenko V | 2011 | Ocean Modelling2011，38，34： | 1 |
| 8 | On the generation and evolution of internal solitary waves in the northwestern South China Sea显示文摘 | Li Delei Chen Xueen Liu A | 2011 | Ocean Modelling2011，40，2： | 1 |
| 9 | Ultrathin metal-organic framework nanosheets (Cu-TCPP)-based isothermal nucleic acid amplification for food allergen detection显示文摘The rapid and accurate detection of peanuts and soybeans allergen is important to the food safety. In this study, Cu-TCPP nanosheet, a kind of ultra-thin metal-organic framework(MOF)was synthesized and applied in loop-mediated isothermal amplification(named Cu-TCPP@LAMP), which can inhibit the non-specific amplification by absorbing and precise temperature releasing of single primer. As thus, Cu-TCPP@LAMP can achieve high sensitivity and specific amplification of the target gene. As a result, peanut and soybean allergens genes contained in food were successfully detected with a favorable detection sensitivity(5 ng/μL for peanuts and 10 ng/μL for soybeans)and reliable repeatability(The coefficient of variation was 3.38% for peanuts and 3.33% for soybeans). Moreover, the established method was utilized for detection of several commercial products, and had a high consistency with the standard method. Apart from food allergens, this novel assay can be widely used in other areas, such as pathogen detection, tumor nucleic acid detection and so on. | Jiale Gao Xiaodong Sun Yongxin Liu Bing Niu Qin Chen Xueen Fang | 2023 | Food Science and Human Wellness2023，12，5： | 1 |
| 10 | Numerical investigation of wave propagation in the Liverpool Bay,NW England显示文摘The computer model for near shore wave propagation,SWAN,was used to study wave climates in Liverpool Bay,northwest England with various input parameters,including bottom friction factor,white capping,wind drag formulation and effects of tidal modulations.Results were compared with in-situ measurements and reveal the impacts from these inputs on the predictions of wave height and propagation distributions.In particular,the model results were found very sensitive to different input formulations,and tend to underestimate the wave parameters under storm conditions in comparison with the observations.It is therefore important to further validate the model against detailed field measurements,particularly under large storms that are often of the primary concern. | LI Ming RAYMOND Ip WOLF Judith CHEN Xueen BURROWS Richard | 2011 | Acta Oceanologica Sinica2011，30，5： | 0 |
| 11 | The influence of the Three-Gorges Dam on hydrographic and hydrodynamic conditions of the East China Sea显示文摘A fine resolution model has been applied to get more insight into the effects of a modified runoff due to the Three-Gorges-Dam (TGD) on the East China Sea (ECS).The region of interest was confined to the offshore area in the vicinity of the Changjiang River.To the east,it extended up to the area southwest of Cheju Island.The model was used to evaluate the effect of a modified runoff on the water properties of the adjacent regions like the Changjiang diluted water (CDW) and the Zhoushan Fishing Ground.The sensitivity of the ECS to a modified Changjiang runoff was explored firstly by sensitivity studies and secondly by experiments based on historical runoff records and water management plans of the TGD.These experiments led to the general conclusion that the most affected area by runoff is located close to the Changjiang River mouth.The area of influence has an extension of about 150 km×150 km.In the realistic experiment,the related anomalies reached their maximum value in early summer (May).In normal years the related salinity anomalies can get to as large as 2. | FAN Xiaopeng ZHOU Feng CHEN Xueen HUANG Daji POHLMANN Thomas | 2011 | Acta Oceanologica Sinica2011，30，5： | 0 |
| 12 | Numerical investigation of the South China Sea deep circulation显示文摘Based on a two-level nested model from the global ocean to the western Pacific and then to the South China Sea(SCS),the high-resolution SCS deep circulation is numerically investigated.The SCS deep circulation shows a basin-scale cyclonic structure with a strong southward western boundary current in summer(July),a northeast-southwest through-flow pattern across the deep basin without a western boundary current in winter(January),and a transitional pattern in spring and autumn.The sensitivity model experiments illustrate that the Luzon Strait deep overflow is the main factor controlling the seasonal variation in the SCS deep circulation.The SCS surface wind can significantly influence the SCS deep circulation in winter.The Luzon Strait deep overflow transport from the Pacific into the SCS ranges from 0.68×10^(6) m^(3)/s to 1.83×10^(6) m^(3)/s,reaching its maximum in summer(July,up to 1.83×10^(6) m^(3)/s),less in autumn and winter,and the minimum in spring(May,0.68×10^(6) m^(3)/s).In summer,the strong Luzon Strait deep overflow dominates the SCS deep circulation when the role of the SCS surface wind is small.In winter,the weaker Luzon Strait deep overflow and SCS surface wind jointly drive the SCS deep circulation into a northeast-southwest through-flow pattern.The potential vorticity(PV)dissipation in the SCS deep basin reaches its maximum(−0.122 m^(2)/s^(2))in May and its minimum(−0.380 m^(2)/s^(2))in July. | Shengquan Tang Xueen Chen Zhi Zeng Xin Liu | 2022 | Acta Oceanologica Sinica2022，41，5： | 0 |
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