中国海洋大学学报·自然科学版杂志 北大期刊 CSCD期刊 统计源期刊

Improved Numerical Computing Method for the 3D Tidally Induced Lagrangian Residual Current and Its Application in a Model Bay with a Longitudinal Topography

作者：CUI; Yanxing; JIANG; Wensheng; ZHANG; Jinghua 刊期：2019年第06期

An improved method for computing the three-dimensional(3 D)first-order Lagrangian residual velocity(uL)is estab-lished.The method computes tidal body force using the harmonic constants of the zeroth-order tidal current.Compared with using the tidal-averaging method to compute the tidal body force,the proposed method ...

A New Multigrid 3D-VAR Optimization Method for Bottom Friction Using HF Radar Current Observation

作者：ZHANG; Xiaoshuang; WU; Xinrong; LI; Wei; WANG; Bin; ZHU; Xiande; LIU; Kexiu; SHAO; Caixia; SUN; Chunjian; CHAO; Guofang; ZHANG; Tiecheng 刊期：2019年第06期

This paper proposes a new method for data assimilation of the surface radial current observed by High Frequency ground wave radar and optimization of the bottom friction coefficient.In this method,the shallow water wave equation is introduced into the cost function of the multigrid three-dimensional variation data as...

Experimental Study on Interaction Between Degrees of Freedom in a Wave Buoy

作者：HUANG; Shuting; SHI; Hongda; CAO; Feifei; TAN; Junzhe; CHENG; Haixun; LI; Demin; LIU; Shangze; GONG; Haoxiang; TAO; Ji 刊期：2019年第06期

Increasing degrees of freedom(DOFs)is a useful way to raise the power capture efficiency of oscillating wave energy converters.Thus,this study proposes a buoy with three DOFs,which are surge,heave,and pitch.The hydrodynamic performance and power capture efficiency of the buoy is physically modeled.Amplitudes of unidi...

Statistical Prediction for Annual Start Date and Duration of Sea-Ice Coverage at Qinhuangdao Observation Station

作者：JIAO; Chunshuo; ZHANG; Wanlei; DONG; Sheng 刊期：2019年第06期

Qinhuangdao City is located in the mid-latitude monsoon-affected region,and the timing of sea-ice coverage changes from year to year,making sea-ice forecasting difficult.In this paper,we propose a statistical model using the 1980-2013 data collected at the Qinhuangdao observation station.The start date and the durati...

Numerical Simulation of Mechanical Characteristics of a Metal Net for Deep-Sea Aquaculture

作者：CHEN; Changping; LIU; Hangfei; HUANG; Yu; YANG; Jie; LIANG; Xinyu; ZHANG; Chaobi; LOU; Yafei; ZHANG; Yu 刊期：2019年第06期

The investigation on hydrodynamic characteristics of a cage is important for its application in the deep-sea aquaculture in our country.With finite element method,the beam element is used to simulate a three-dimensional metal chain net,and the connector element is introduced as the interaction between metal net lines...

Sediment Provenance and Climate Changes Since the Middle Pleistocene in the Yingqiong Continental Slope of the South China Sea

作者：XIAO; Xiao; FENG; Xiuli; LIU; Jie 刊期：2019年第06期

The age,grain size compositions and major elemental compositions for sediments in core YQ1 from the Yingqiong continental slope in the South China Sea was determined in this paper.It is noted that the periodically cyclic change of sedimentation rates occurred in the Yingqiong continental slope in the South China Sea....

Geochemical Characteristics of the Trace and Rare Earth Elements in Reef Carbonates from the Xisha Islands(South China Sea):Implications for Sediment Provenance and Paleoenvironment

作者：BI; Dongjie; ZHAI; Shikui; ZHANG; Daojun; XIU; Chun; LIU; Xinyu; LIU; Xiaofeng; JIANG; Longjie; ZHANG; Aibin 刊期：2019年第06期

Based on the concentrations of the trace elements,rare earth elements(REE),and Sr isotopic compositions in reef carbonates from the well‘Xike-1’reef core of the Xisha Islands,the constraints on sediment provenance and paleoenvironment were defined.Variations of the terrigenous input into the paleoseawater were trac...

Stratigraphic Sequence and Sedimentary Systems in the Middle-Southern Continental Slope of the East China Sea from Seismic Reflection Data:Exploration Prospects of Gas Hydrate

作者：LI; Deyong; CHEN; Hongyan; XU; Shujuan; XING; Junhui; CHENG; Honggang; WANG; Jinkai 刊期：2019年第06期

Many evidences for gas hydrate bearing sediments had been found in the continental slope of the East China Sea,such as bottom simulating reflections(BSRs),undersea gas springs,pyrite associated with methane leakage,mud diapirs/mud volcanos,bottom-water methane anomalies and so on.In this study,six key stratigraphic i...

Foraminiferal Changes and Response to the Channel Diversion and Discharge Fluctuation of the Yellow River in the North Yellow Sea During the Past Century

作者：ZHENG; Shiwen; FAN; Dejiang; TIAN; Yuan; XU; Jingping 刊期：2019年第06期

Diversion of the Yellow River is a unique geological event in offshore China,causing changes of the sedimentary environment in eastern China Seas.The last diversion took place in AD 1855,with the estuary diverted from the Yellow Sea into the Bohai Sea.The identification of the river diversion events in the shelf sedi...

Hydrocarbon Geological Conditions and Exploration Potential of Mesozoic-Paleozoic Marine Strata in the South Yellow Sea Basin

作者：YUAN; Yong; CHEN; Jianwen; LIANG; Jie; XU; Ming; LEI; Baohua; ZHANG; Yuxi; CHENG; Qingsong; WANG; Jianqiang 刊期：2019年第06期

No substantial breakthroughs have been made in hydrocarbon exploration of the South Yellow Sea Basin.It is believed that the Mesozoic-Paleozoic marine sedimentary formation in the South Yellow Sea Basin is similar to that in the Sichuan Basin.Therefore,outcrop,drilling,and seismic data were determined and compared wi...

Mechanical Properties of Methane Hydrate-Bearing Interlayered Sediments

作者：DONG; Lin; LI; Yanlong; LIU; Changling; LIAO; Hualin; CHEN; Guoqi; CHEN; Qiang; LIU; Lele; HU; Gaowei 刊期：2019年第06期

The complex distribution of gas hydrate in sediments makes understanding the mechanical properties of hydrate-bearing sediments a challenging task.The mechanical behaviors of hydrate-bearing interlayered sediments are still poorly known.A series of triaxial shearing tests were conducted to investigate the strength pa...

Sea Salt Sodium Record in a Shallow Ice Core from East Antarctica as a Potential Proxy of the Antarctic Sea Ice Extent in Southern Indian Ocean

作者：YANG; Jiao; DU; Zhiheng; XIAO; Cunde 刊期：2019年第06期

Internal Multiple Prediction Based on Imaging Profile Prediction and Kirchhoff Demigration

作者：QIU; Binhuang; TAN; Jun; DAN; Zhiwei; YU; Jiashun; YAN; Hongyan; LIU; Baohua; YU; Kaiben; SONG; Peng; XIE; Chuang 刊期：2019年第06期

This paper introduces an internal multiple prediction method based on imaging profile prediction and Kirchhoff demigration.First,based on an inputted prestack time migration profile,the method predicts the prestack time migration profile that only includes internal multiples by inverse scattering series method.Second...

Anticorrosion Coatings from Poly(Aniline-co-2-Ethylaniline) Micro/Nanostructures

作者：XING; Cuijuan; SONG; Xinling; ZHANG; Zhiming; JIANG; Xiaohui; YU; Liangmin 刊期：2019年第06期

PANI copolymer micro/nanostructures with different surface wettability were obtained from the chemical oxidation copolymerization of aniline(Ani)with 2-ethyl aniline(EA)at diverse[EA]/[Ani+EA]molar ratios,by employing ammonium persulfate as an oxidant.The results revealed that the poly(aniline-co-2-ethyl aniline)(PAN...

Paleontological Records of Holocene Environmental Changes offshore,Egypt

作者：Rehab; ELSHANAWANY; Yousra; MOHAMED; Mohamed; IAIBRAHIM 刊期：2019年第06期

Paleontological and sedimentological analyses were carried out in sediment core from southeastern Mediterranean Sea,offshore Egypt to reconstruct the past environmental changes in trophic state and temperature during Holocene.To achieve our goals,grain size,total organic carbon,planktic and benthic foraminifera,dinof...