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| 1 | Preliminary assessment of the navigation and positioning performance of BeiDou regional navigation satellite system显示文摘BeiDou regional navigation satellite system(BDS)also called BeiDou-2 has been in full operation since December 27,2012.It consists of 14 satellites,including 5 satellites in Geostationary Orbit(GEO),5 satellites in Inclined Geosynchronous Orbit(IGSO),and 4 satellites in Medium Earth Orbit(MEO).In this paper,its basic navigation and positioning performance are evaluated preliminarily by the real data collected in Beijing,including satellite visibility,Position Dilution of Precision(PDOP)value,the precision of code and carrier phase measurements,the accuracy of single point positioning and differential positioning and ambiguity resolution(AR)performance,which are also compared with those of GPS.It is shown that the precision of BDS code and carrier phase measurements are about 33 cm and 2 mm,respectively,which are comparable to those of GPS,and the accuracy of BDS single point positioning has satisfied the design requirement.The real-time kinematic positioning is also feasible by BDS alone in the opening condition,since its fixed rate and reliability of single-epoch dual-frequency AR is comparable to those of GPS.The accuracy of BDS carrier phase differential positioning is better than 1 cm for a very short baseline of 4.2 m and 3 cm for a short baseline of 8.2 km,which is on the same level with that of GPS.For the combined BDS and GPS,the fixed rate and reliability of single-epoch AR and the positioning accuracy are improved significantly.The accuracy of BDS/GPS carrier phase differential positioning is about 35 and 20%better than that of GPS for two short baseline tests in this study.The accuracy of BDS code differential positioning is better than 2.5 m.However it is worse than that of GPS,which may result from large code multipath errors of BDS GEO satellite measurements. | YANG YuanXi LI JinLong WANG AiBing XU JunYi HE HaiBo GUO HaiRong SHEN JunFei DAI Xian | 2014 | Science China Earth Sciences2014，57，1： | 125 |
| 2 | Current Status and Challenge of Pseudorabies Virus Infection in China显示文摘Pseudorabies(PR),also called Aujeszky's disease,is a highly infectious disease caused by pseudorabies virus(PRV).Without specific host tropism,PRV can infect a wide variety of mammals,including pig,sheep,cattle,etc.,thereby causing severe clinical symptoms and acute death.PRV was firstly reported in China in 1950s,while outbreaks of emerging PRV variants have been documented in partial regions since 2011,leading to significant economic losses in swine industry.Although scientists have been devoting to the design of diagnostic approaches and the development of vaccines during the past years,PR remains a vital infectious disease widely prevalent in Chinese pig industry.Especially,its potential threat to human health has also attracted the worldwide attention.In this review,we will provide a summary of current understanding of PRV in China,mainly focusing on PRV history,the existing diagnosis methods,PRV prevalence in pig population and other susceptible mammals,molecular characteristics,and the available vaccines against its infection.Additionally,promising agents including traditional Chinese herbal medicines and novel inhibitors that may be employed to treat this viral infection,are also discussed. | Lei Tan Jun Yao Yadi Yang Wei Luo Xiaomin Yuan Lingchen Yang Aibing Wang | 2021 | Virologica Sinica2021，36，4： | 34 |
| 3 | 水平气力输送系统中颗粒波状流的模拟显示文摘对用于两相流计算的硬球模型进行简化 ,模拟了水平气力输送系统中颗粒波的动态流型。模型中 ,气体状态由两相耦合的 Navier- Stokes方程描述 ,颗粒运动通过单颗粒的运动轨迹描述。并且 ,颗粒的碰撞运动由冲量守恒原理控制 ,颗粒的悬浮运动由力平衡方程决定 ,相间耦合作用依据牛顿第三定律处理。模拟结果从介观层次呈现了水平气力输送系统中与实验特征吻合的颗粒波状流 ,说明了颗粒波的传播速度取决于气体速度 ,它并不敏感地依赖于系统中的存料量及物料密度。 | 欧阳洁 孙国刚 YU Aibing | 2003 | 西北工业大学学报2003，21，6： | 10 |
| 4 | 固体燃料流化床富氧燃烧的研究动态与进展显示文摘二氧化碳捕集与利用是全球学术界和工业界关注的热点,也是燃烧科学技术领域的前沿和难点。固体燃料的流化床富氧燃烧耦合了流化床燃烧和富氧燃烧的诸多优点,是最具工业应用前景的燃烧中碳捕集技术之一。为更全面把握该领域最新动态,对近年来流化床富氧燃烧的研究进行了系统梳理,在简述富氧燃烧基本技术原理基础上,分析了国内外的研究动态,总结了主要研究进展,包括单一燃料流化床富氧燃烧、混合燃料流化床富氧燃烧、加压流化床富氧燃烧和新型流化床富氧燃烧,并探讨了固体燃料流化床富氧燃烧技术将来发展趋势和研究重点。 | 刘沁雯 钟文琪 邵应娟 Yu Aibing | 2019 | 化工学报2019，70，10： | 10 |
| 5 | Synthesis of Li_4Ti_5O_(12) nanostructural anode materials with high charge–discharge capability显示文摘This study demonstrates a facile and efficient hydrothermal method to prepare spindle titanate(Li4Ti5O12 denoted as LTO)and/or carbon-LTO nanocomposites(CLTO),in which the LTO or C-LTO microspheres have diameters of a few micrometers,composed of numerous nanosheets with thickness of*30 nm and edge length of hundreds of nanometers.The morphology and size control of these nanoparticles could be achieved by varying experimental parameters including concentration of titanium butoxide,lithium hydroxide,and cetyltrimethylammonium bromide,as well as reaction temperature and time.These micro-nanostructures were characterized by several advanced techniques,such as transmission electron microscopy,scanning electron microscopy,X-ray diffraction,energy dispersive spectroscopic analysis,surface area,and electrochemical measurements.The LTO and C-LTO microstructures were examined in the charge–discharge capacity at a rate of 50 C,as well as the stability after 100 cycles at a rate of 10 C.The excellent capability may be attributed to good conductivity,large surface area,and stable assembly structure of such micro-nanostructures,which could be explored as a promising anode material for lithium-ion batteries. | Ru Wen Jeffrey Yue Zifeng Ma Wuming Chen Xuchuan Jiang Aibing Yu | 2014 | Chinese Science Bulletin2014，59，18： | 8 |
| 6 | Recent advances in spinel-type electrocatalysts for bifunctional oxygen reduction and oxygen evolution reactions显示文摘The demand for efficient and environmentally-benign electrocatalysts that help availably harness the renewable energy resources is growing rapidly. In recent years, increasing insights into the design of water electrolysers, fuel cells, and metal–air batteries emerge in response to the need for developing sustainable energy carriers, in which the oxygen evolution reaction and the oxygen reduction reaction play key roles. However, both reactions suffer from sluggish kinetics that restricts the reactivity. Therefore, it is vital to probe into the structure of the catalysts to exploit high-performance bifunctional oxygen electrocatalysts. Spinel-type catalysts are a class of materials with advantages of versatility, low toxicity, low expense, high abundance, flexible ion arrangement, and multivalence structure. In this review, we afford a basic overview of spinel-type materials and then introduce the relevant theoretical principles for electrocatalytic activity, following that we shed light on the structure–property relationship strategies for spinel-type catalysts including electronic structure, microstructure, phase and composition regulation,and coupling with electrically conductive supports. We elaborate the relationship between structure and property, in order to provide some insights into the design of spinel-type bifunctional oxygen electrocatalysts. | Xiao-Meng Liu Xiaoyang Cui Kamran Dastafkan Hao-Fan Wang Cheng Tang Chuan Zhao Aibing Chen Chuanxin He Minghan Han Qiang Zhang | 2021 | Journal of Energy Chemistry2021，30，2： | 7 |
| 7 | An output delay approach to fault estimation for sampled-data systems显示文摘The problem of fault estimation for a class of non-uniformly sampled-data systems is investigated from the time delay point of view in this paper.Firstly,the output delay approach is employed to model the sampled-data system as a continuous-time one with time-varying delay output.Then,based on the analysis of the inapplicability of the adaptive fault diagnosis observer in such class of time-delay systems,a novel augmented fault estimation observer design method is proposed to guarantee the exponential convergence of the estimation errors.Furthermore,an extension to the case of time varying fault estimation for the noisy sampled-data systems is studied.Finally,simulation results of a flight control system are presented to demonstrate the effectiveness of the proposed method. | WEN ChengLin QIU AiBing JIANG Bin | 2012 | Science China(Information Sciences)2012，55，9： | 6 |
| 8 | A Review on Applications of Layered Phosphorus in Energy Storage显示文摘Phosphorus in energy storage has received widespread attention in recent years. Both the high specific capacity and ion mobility of phosphorus may lead to a breakthrough in energy storage materials. Black phosphorus, an allotrope of phosphorus, has a sheet-like structure similar to graphite. In this review, we describe the structure and properties of black phosphorus and characteristics of the conductive electrode material, including theoretical calculation and analysis. The research progress in various ion batteries, including lithium-sulfur batteries, lithium–air batteries, and supercapacitors, is summarized according to the introduction of black phosphorus materials in different electrochemical applications. Among them, with the introduction of black phosphorus in lithium-ion batteries and sodium-ion batteries, the research on the properties of black phosphorus and carbon composite is introduced. Based on the summary, the future development trend and potential of black phosphorus materials in the field of electrochemistry are analyzed. | Cheng Liu Yinghao Wang Jie Sun Aibing Chen | 2020 | Transactions of Tianjin University2020，26，2： | 6 |
| 9 | 煤/生物质流态化富氧燃烧的CO2 富集特性显示文摘流化床富氧燃烧是具有重要应用前景的燃烧中碳捕集技术。为更深入认识固体燃料的流态化富氧燃烧行为,构建了微型流态化反应-质谱联用实验系统,反应器直径10 mm,燃烧温度700~900℃,探索了基于在线质谱分析的流态化燃烧过程特性表征方法,以烟煤和花梨木为对象,研究了煤、生物质及其混合物在富氧气氛和流态化条件下的燃烧行为,重点考察了氧浓度、燃烧温度、煤与生物质质量比对CO_2谱峰曲线形态、反应总时间、起始反应时刻、烟气中富集CO_2体积分数、颗粒燃烧产生CO_2量、CO_2相对生成率等特性的影响。结果表明,在O_2/CO_2燃烧气氛下,随着氧体积分数增加,燃烧总反应时间缩短,颗粒燃烧产生的CO_2量和生成速率均增加,但烟气中富集的CO_2体积分数减小;提高燃烧温度,缩短了燃烧过程所需的时间,可以促进CO_2的富集,烟气中CO_2浓度、颗粒燃烧产生的CO_2量和生成速率均增加;生物质比例增大,起始反应时间提前,燃烧反应所需总时间减少,烟气中富集的CO_2浓度和颗粒燃烧产生的CO_2均减少,但CO_2生成速率增加。 | 刘沁雯 钟文琪 刘雪娇 刘倩 邵应娟 Yu Aibing | 2018 | 化工学报2018，69，12： | 6 |
| 10 | The origin of sulfuryl-containing components in SEI from sulfate additives for stable cycling of ultrathin lithium metal anodes显示文摘In the light of wireless and non-fossil society based on portable electronics, electric vehicles, and smart grids, secondary batteries with higher energy density, faster charge, and safer operation are pursued persistently [1]. Nowadays, commercial lithium(Li)-ion batteries have been practically applied in our daily life. However,the energy density of Li-ion batteries based on intercalation chemistry is approaching to the theoretical value due to the limited specific capacity of graphite anode(372 mA h g-1) [2]. | Jin-Xiu Chen Xue-Qiang Zhang Bo-Quan Li Xin-Meng Wang Peng Shi Wancheng Zhu Aibing Chen Zhehui Jin Rong Xiang Jia-Qi Huang Qiang Zhang | 2020 | Journal of Energy Chemistry2020，29，8： | 5 |
| 11 | Tianwen-1 MINPA observations in the solar wind显示文摘The Mars Ion and Neutral Particle Analyzer(MINPA)is one of the three scientific instruments onboard the Tianwen-1 orbiter to investigate the Martian space environment.During Tianwen-1’s transfer orbit to Mars,the MINPA was switched on to measure the solar wind ions.Here,we present the first results of the MINPA observations in the solar wind.During cruise,nearly half of the MINPA ion field-of-view(FOV)was blocked by the lander capsule;thus only the solar-wind ions with azimuthal speeds pointing towards the unblocked FOV sectors could be detected.We perform a detailed comparison of the MINPA’s solar wind observations with data from Earth-based missions when MINPA reached its count-rate peak,finding a general consistency of the ion moments between them.The blocking effect due to the lander is evaluated quantitatively under varying solar-wind velocity conditions.Despite the blocking effect,the MINPA’s solar wind measurements during the transfer orbit suggest a good performance. | AiBing Zhang LingGao Kong WenYa Li Lei Li BinBin Tang ZhaoJin Rong Yong Wei JiJie Ma YiTeng Zhang LiangHai Xie YuXian Wang JianSen He Bin Liu WenJing Wang Bin Su JiaWei Li Xu Tan Fang Wang TaiFeng Jin FuHao Qiao Peter Wurz Yan Zhu YunFei Bai YiRen Li XinBo Zhu YueQiang Sun YongLiao Zou Chi Wang | 2022 | Earth and Planetary Physics2022，6，1： | 5 |
| 12 | Geology and Isotope Geochemistry of the Yinchanggou-Qiluogou Pb-Zn Deposit,Sichuan Province,Southwest China显示文摘The Yinchanggou-Qiluogou Pb-Zn deposit,located in the western Yangtze Block,southwest China,is hosted by the Upper Sinian Dengying Formation dolostone.Ore bodies occur in the Qiluogou anticline and the NS-and NNW-trending faults.Sulfide ores mainly consist of sphalerite,pyrite,galena and calcite,with subordinate dolomite and quartz.Seventeen ore bodies have been discovered to date and they have a combined 1.0 million tons of sulfide ores with average grades of 2.27wt%Zn and 6.89wt%Pb.The δD_(H2O-SMOW) and δ^(18)O_(H2O-SMOW) values of fluid inclusions in quartz and calcite samples range from-68.9‰ to-48.7‰ and 7.3‰ to 15.9‰,respectively,suggesting that H_2O in the hydrothermal fluids sourced from metamorphic water.Calcite samples have δ^(13)C_(PDB) values ranging from-6.2‰ to-4.1‰ and δ^(18)O_(SMOW) values ranging from 15.1‰ to 17.4‰,indicating C and O in the hydrothermal fluids likely derived from a mixed source of metamorphic fluids and the host carbonates.The δ^(34)S_(CDT) values of sulfide minerals range from 5.5‰ to 20.3‰,suggesting that thermal chemical reduction of sulfate minerals in evaporates were the most probable source of S in the hydrothermal fluids.The ^(206)Pb/^(204)Pb,^(207)Pb/^(204)Pb and ^(208)Pb/^(204)Pb ratios of sulfide minerals fall in the range of 18.11 to 18.40,15.66 to 15.76 and 38.25 to 38.88,respectively.The Pb isotopic data of the studied deposit plot near the upper crust Pb evolution curve and overlap with the age-corrected Proterozoic basement rocks and the Upper Sinian Dengying Formation hosting dolostone.This indicates that the Pb originated from a mixed source of the basement metamorphic rocks and the ore-hosting carbonate rocks.The ore geology and C-H-O-S-Pb isotopic data suggest that the YinchanggouQiluogou deposit is an unusual carbonate-hosted,strata-bound and epigenetic deposit that derived ore-forming materials from a mixed source of the underlying Porterozoic basements and the Sinian hosting carbonates. | LI Bo ZHOU Jiaxi LI Yingshu CHEN Aibing WANG Ruixue | 2016 | Acta Geologica Sinica(English Edition)2016，90，5： | 5 |
| 13 | The technology of space plasma in-situ measurement on the China Seismo-Electromagnetic Satellite显示文摘The China Seismo-Electromagnetic satellite(CSES) was designed to study the ionospheric disturbances associated with earthquakes. Satellite payload includes nine instruments. Among them, we recall instruments for plasma analysis, electric,magnetic fields and high energy particle detectors. Langmuir probe(LP) and plasma analyzer package(PAP) are the in-situ payloads to measure space plasma. Its scientific objective is to research space plasma physics phenomena and the ionosphere changes caused by seismic. It is the first application of in-situ measurement technology in the field of space exploration in China.The Langmuir probe and Plasma Analyzer Package have been tested and calibrated to verify the performance in INAF-IAPS.Currently, on-orbit testing is being performed with satellites. | LIU Chao GUAN YiBing ZHENG XiangZhi ZHANG AiBing PIERO Diego SUN YueQiang | 2019 | Science China(Technological Sciences)2019，62，5： | 5 |
| 14 | 快速流化床颗粒团絮特征的MP-PIC数值模拟显示文摘为了研究快速流化床颗粒的团絮特征,建立了基于多相质点网格法的快速流化床气固多相流三维数理模型,气相场采用大涡湍流模型,通过求解牛顿运动方程得到颗粒相运动信息,气固间相互作用力采用Gidaspow曳力模型,固体间作用力通过计算颗粒应力梯度得到。基于该模型,对三维快速流化床上升管(H=3 m、d=0.1 m)气固流动开展了数值模拟,并与实验进行了校正,研究了在气速工况Ug=5.28 m?s-1下的颗粒(ρp=2650 kg?m-3、dp=250μm)团絮性质,实现了对上升管内颗粒团絮的基本类型(条形团絮、马鞍形团絮、U形团絮)的成功预测,并揭示了不同类型团絮在上升管内形成、发展、聚并直至破碎的演化规律。结果表明,上升管径向颗粒团絮的平均颗粒浓度分布呈现中间低两边高的环核结构,颗粒团絮速度的分布与其相反;随着轴向高度的增加,颗粒团絮的颗粒浓度逐渐降低而速度逐渐增加,但达到一定高度后变化减缓。 | 孙子文 陈岱琳 钟文琪 Aibing Yu | 2018 | 化工学报2018，69，8： | 4 |
| 15 | N-doped ordered mesoporous carbon spheres derived by confined pyrolysis for high supercapacitor performance显示文摘Herein, we report a confined pyrolysis strategy to prepare mesoporous carbon nanospheres by which surface area of carbon spheres is increased, pore size is enlarged and effective N-doping is achieved. In this method, the mesoporous polymer sphere as carbon precursor and 2-methylimidazole as nitrogen precursor are encapsulated in a compact silica shell which provides a confined nano-space for the pyrolysis treatment. The in situ generated gases from mesoporous polymer sphere and 2-methylimidazole under pyrolysis diffuse into the pores of mesoporous polymer sphere in the confined compact silica shell,resulting in increased surface area, larger pore size and N-doping due to self-activation effect. As electrodes in supercapacitor, the N-doped mesoporous carbon nanospheres exhibit a significantly enhanced specific capacitance of 326 Fg^-1 at 0.5 Ag^-1, which is 2 times higher than that of mesoporous carbon spheres under unconfined pyrolysis condition, exhibiting its potential for electrode materials with high performance. | Juan Du Lei Liu Yifeng Yu Yue Zhang Haijun Lv Aibing Chen | 2019 | Journal of Materials Science & Technology2019，35，10： | 4 |
| 16 | Mars Ion and Neutral Particle Analyzer (MINPA) for Chinese Mars Exploration Mission (Tianwen-1): Design and ground calibration显示文摘The main objective of the Mars Ion and Neutral Particle Analyzer(MINPA)aboard the Chinese Mars Exploration Mission(Tianwen-1)is to study the solar wind-Mars interaction by measuring the ions and energetic neutral atoms(ENAs)near Mars.The MINPA integrates ion and ENA measurements into one sensor head,sharing the same electronics box.The MINPA utilizes a standard toroidal top-hat electrostatic analyzer(ESA)followed by a time of flight(TOF)unit to provide measurement of ions with energies from 2.8 eV to 25.9 keV and ENAs from 50 eV to 3 keV with a base time resolution of 4 seconds.Highly polished silicon single crystal substrates with an Al2O3 film coating are used to ionize the ENAs into positive ions.These ions can then be analyzed by the ESA and TOF,to determine the energy and masses of the ENAs.The MINPA provides a 360°×90°field of view(FOV)with 22.5°×5.4°angular resolution for ion measurement,and a 360°×9.7°FOV with 22.5°×9.7°angular resolution for ENA measurement.The TOF unit combines a-15 kV acceleration high voltage with ultra-thin carbon foils to resolve H+,He2+,He+,O+,O2+and CO2+for ion measurement and to resolve H and O(≥16 amu group)for ENA measurement.Here we present the design principle and describe our ground calibration of the MINPA. | LingGao Kong AiBing Zhang Zhen Tian XiangZhi Zheng WenJing Wang Bin Liu Peter Wurz Daniele Piazza Adrian Etter Bin Su YaYa An JianJing Ding WenYa Li Yong Liu Lei Li YiRen Li Xu Tan YueQiang Sun | 2020 | Earth and Planetary Physics2020，4，4： | 4 |
| 17 | CFD-DEM modelling of mixing and segregation of binary mixtures of ellipsoidal particles in liquid fluidizations显示文摘Solid-liquid fluidized beds of binary mixtures are widely used in many industries.Particle segregation may occur as particles can differ in size,density,or shape.Extensive studies have been conducted in the past to understand the effects of particlesize and density on the mixing and segregation,but the effect of particle shape has not been well addressed.Therefore,in the present work,CFD-DEM approach is employed to perform a numerical analysis of the effect of particle shape on the particle mixing and segregation phenomenon in liquid fluidization system.Different particle shapes from oblate to prolate are produced by varying aspect ratio of ellipsoids from 0.25 to 3,and eight binary mixtures of spheres and ellipsoids are examined.The results show that when oblate or prolate particles are added to spheres,the segregation takes place.The segregation degree increases with particle aspect ratio diverging from 1.0 and also liquid superficial velocity.The relationship of mixing index with aspect ratio under different liquid velocities is established,and a detailed explanation is given.It is revealed that increasing the projected area and hence the drag force results in the separation of ellipsoidal particles from spheres. | Esmaeil Abbaszadeh Molaei Aibing Yu Zongyan Zhou | 2019 | Journal of Hydrodynamics2019，31，6： | 3 |
| 18 | Cross wavelet analysis of the relationship between total solar irradiance and sunspot number显示文摘Using the observational data of total solar irradiance(TSI)from 1976 to 2006,the evolution of total solar irradiance and the rela-tionship between TSI and sunspot number(SSN)have been analyzed with the wavelet technique.The results of the continuous wavelet transform(CWT)indicate that the TSI has multi-scale evolutionary characteristics.In the low frequency band,the TSI and SSN show similar variation with a significant and steady oscillation period from 8 to 11.4 a.While in the high frequency band,only around the maximum time of solar cycles,both the TSI and SSN present a significant intermittent oscillation period from 2 to 6 months.The results of the cross wavelet transform indicate that there is significant in-phase resonance oscillation between the TSI and SSN in 8-11.4 a band,where the variation of the SSN is 2 months ahead of that of TSI.Those results confirm the SSN as the primary cause for TSI's periodic variation in the time scale of 8-11.4 a.However for the 2-6 month band,significant resonance periodicity is observed only within the maximum time of solar cycle,but the phase relationship between the TSI and SSN is unsteady.Finally,a reliable TSI monthly series from 1878 to 1975 is reconstructed and tested. | YANG RuoWen CAO Jie HUANG Wei NIAN AiBing | 2010 | Chinese Science Bulletin2010，55，20： | 3 |
| 19 | Seed-mediated synthesis of dendritic platinum nanostructures with high catalytic activity for aqueous-phase hydrogenation of acetophenone显示文摘This work reports a facile and efficient seed-mediated method for the synthesis of dendritic platinum(Pt)nanoparticles(NPs) at low temperatures of 55–60 °C in water, using L-ascorbic acid as a reducing agent and sodium citrate as a capping agent. It is found that the dendritic Pt NPs(10–150 nm) are composed of tiny Pt nanocrystals, which nucleate and grow through the introduced smaller Pt seeds with diameters of 3–5 nm.Further investigation shows that the dendritic Pt nanostructures display excellent catalytic performance in an aqueous-phase aromatic ketone hydrogenation reaction, including:(i) acetophenone conversion rate of> 90%, with smaller dendritic Pt NPs(10–46 nm) offering a higher conversion efficiency;(ii) high chemoselectivity toward carbonyl group(90.6%–91.5%), e.g., the selectivity to 1-phenylethanol is ~90.1% with nearly100% acetophenone conversion for 10 nm dendritic Pt NPs within 60 min, under mild reaction conditions(20 °C, 1.5 bar H2 pressure, and 1.5 mol% catalyst). The high catalytic activity, selectivity and stability of the dendritic Pt nanostructures under the organic solvent-free conditions make them promising for many potential applications in green catalytic conversion of hydrophilic biomass derived compounds. | Yuan Yuan Yusuf Valentino Kaneti Minsu Liu Fangzhu Jin Danielle Frances Kennedy Xuchuan Jiang Jun Huang Aibing Yu | 2015 | Journal of Energy Chemistry2015，24，5： | 3 |
| 20 | Seismic anisotropy beneath the Chinese mainland显示文摘We investigated the upper mantle anisotropy beneath China by applying teleseismic shear wave splitting measurements at 119 seismic stations from CDSN and GSN/IRIS networks in China.The splitting observations are characterized by apparent diversity of anisotropy pattern in adjacent tectonic domains,including the Tianshan orogenic belt,Tibetan plateau,the Yangtze craton,the North China craton and northeastern region.In western China(Tianshan orogenic belt and Tibetan plateau),fast polarization directions of split SKS waves coincide strikingly well with the dominating trend of deformational crustal features and delay times range from 0.5 s to 1.6 s.While in eastern China,seismic anisotropy deduced from shear wave splitting reveals a homogeneous NW-SE trending structure,almost perpendicular to the strike of large-scale surface structures.The observed delay times of 1.5 s to more than 2 s favor consistent mantle flow over large mantle thicknesses.Based upon the straightforward relationships between seismic anisotropy and the development of lattice preferred orientation of mineral in upper mantle rocks,we interpret the splitting results in terms of tectonic fabric within the upper mantle.Since the lithosphere is less than 100 km thick beneath eastern China and the observed fast directions are subparallel to the trend of the absolute plate motion(APM) of Eurasian plate,we propose that the asthenosphere may mainly contribute to the anisotropic effects beneath eastern China.However,the upper mantle anisotropy beneath western China may have developed more recently in the subcrustal lithosphere because of rather small delay times and thick lithosphere.We also use the opportunity of the dense geodetic measurements available in China to discuss the coupling between the crust and mantle.In the Eurasia-fixed reference frame,GPS and shear wave splitting both depict a similar trend beneath eastern China,suggesting a lithospheric block 'escaping' toward the east that could orient olivine [001] axis in the upper mantle.There is a strong coupling between the crust and the mantle in eastern China.A different behavior is observed in western China.The GPS vectors trend NS-NE in Tibet and NW in Tianshan,close to the regional compression direction,whereas the fast directions trend EW in Tibet and NE in Tianshan,suggesting a tectonic regime close to a mode of axial shortening,generating the development of EW-trending foliation in Tibet and NE-trending foliation in Tianshan at depth.The crust and mantle deform independently in western China. | Yuanyuan V. Fu Yongshun John Chen Aibing Li | 2010 | Earthquake Science2010，23，6： | 3 |
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