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世界地震译丛 1996年第5期27卷 39-51页

作者： M.kikuchi H.kanamori k.satake 许康生甘肃省高台地震台

我们利用多重事件的反褐积方法分析了1988年12月7日的亚美尼亚斯皮塔克地震的远震P波和S波,以探讨震源过程。长周期远震体波表现出复杂的波形,比通常看到的同等大小的地震显得更复杂。识别出了两组次级事件,其中一组是最初20s期间的走... 详细信息

我们利用多重事件的反褐积方法分析了1988年12月7日的亚美尼亚斯皮塔克地震的远震P波和S波,以探讨震源过程。长周期远震体波表现出复杂的波形,比通常看到的同等大小的地震显得更复杂。识别出了两组次级事件,其中一组是最初20s期间的走滑事件,另一组是初始破裂之后约30s开始的倾滑事件。所有子事件的张量之和实质上是标量矩为1.47×10^(19)Nm的走滑事件(走向302°、倾角59°、滑动角143°),倾滑事件(走向89°、倾角60°、滑动角88°)的地震矩是5.6×10^(18)Nm,近乎总量的40％,而且与其他具有走滑机制的次事件相比,矩释放速度慢,我们称这种事件为慢速余滑事件。这种慢速余滑事件的机制和由阿拉伯板块与俄罗斯板块之间的大陆碰撞在高加索地区引起的南北压缩为主的现代形变是一致的。结果表明,在一个出现走滑运动和地壳缩短的地方,如南加州大的走滑事件可能伴随着大的逆冲事件,反之亦然。要确定同震形交的图象,在时间、空间和机制上分辨多重事件是十分必要的。

关键词：地震震源余震滑移事件

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第28章:海啸

世界地震译丛 2006年第3期37卷 59-75页

作者： k．satake 薛艳（译）张永仙（校）不详中国地震台网中心

海啸是一种海洋重力波，是由海底地震或诸如火山喷发、滑坡等其他地质运动引起的。大多数海啸是由浅源大地震引起的，所以沿板块俯冲带分布（图1）。Tsunami（海啸）一词是日语，表示港口波的意思。海啸通常很小，在深海几乎看不出来，... 详细信息

海啸是一种海洋重力波，是由海底地震或诸如火山喷发、滑坡等其他地质运动引起的。大多数海啸是由浅源大地震引起的，所以沿板块俯冲带分布（图1）。Tsunami（海啸）一词是日语，表示港口波的意思。海啸通常很小，在深海几乎看不出来，但是当其接近海岸或海港时，就会变得很大，并造成破坏。有时候，海啸被称为地震海洋波，或被错误地称为潮汐波。

关键词：海啸 Tsunami 海底地震火山喷发地质运动重力波大地震俯冲带近海岸潮汐波

1946年南海地震的同震滑动分布及该地震引起的无震滑动

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世界地震译丛 2002年第3期33卷 28-34页

作者： Y．Tanioka k．satake 李学勤杜桂香吕春来范国华不详中国地震局地球物理研究所

由海啸波形的反演估算了1946年南海地震(Mw8.3)断层面上的同震滑动分布。比以前的研究(satake,1993)有以下3个方面的进展:(1)使用了大量的较小次级断层;(2)次级断层更拟合板块的几何形状;(3)应用了更详尽的探测数据。反演的结果表明,实... 详细信息

由海啸波形的反演估算了1946年南海地震(Mw8.3)断层面上的同震滑动分布。比以前的研究(satake,1993)有以下3个方面的进展:(1)使用了大量的较小次级断层;(2)次级断层更拟合板块的几何形状;(3)应用了更详尽的探测数据。反演的结果表明,实测波形和合成波形间的一致性比以前的研究有极大改善。在四国近海震源区西半部,在闭锁区下倾端附近发生了约6m的大滑动。上倾或浅部的滑动很小,说明该地区为弱的地震耦合。在纪伊半岛近海震源区东半部的约3m的大滑动延伸到整个闭锁区。由大地测量数据(Sagiya and Thatcher,1999)估计了上板块八字形断层上的大滑动,对于解释海啸波形并不需要这样大的滑动,表明这些大的滑动是无震滑动。板块界面下倾端上的两个滑动分布,一个是由大地测量数据得到的,而另一个是由海啸波形得到的,除了在四国室户角下的滑动外,两个滑动分布都相当一致。据此来看,无震滑动也发生在室户角下部的板块交界处。

关键词：地震滑动断层海啸波形无震滑动

Aqueous-phase reforming of hydroxyacetone solution to bio-based H_(2)over supported Pt catalysts

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Green Energy & Environment 2024年第4期9卷 777-788页

作者： A.k.k.Vikla k.koichumanova Songbo He k.Seshan Joint International Research Laboratory of Circular Carbon Nanjing Tech UniversityNanjing211816China Faculty of Science and Technology University of Twente7500 AE EnschedeThe Netherlands CoRe Pro 9723 BL GroningenThe Netherlands

Aqueous-phase reforming(APR)is an attractive process to produce bio-based hydrogen from waste biomass streams,during which the catalyst stability is often challenged due to the harsh reaction *** this work,three Pt-based catalysts supported on C,AlO(OH),and ZrO_(2)were investigated for the APR of hydroxyacetone solution in afixed bed reactor at 225℃and 35 *** them,the Pt/C catalyst showed the highest turnover frequency for H_(2)production(TOF of 8.9 molH_(2)molPt^(-1)min^(-1))and the longest catalyst *** the AlO(OH)and ZrO_(2)supported Pt catalysts,the side reactions consuming H_(2),formation of coke,and Pt sintering result in a low H_(2)production and the fast catalyst *** proposed reaction pathways suggest that a promising APR catalyst should reform all oxygenates in the aqueous phase,minimize the hydrogenation of the oxygenates,maximize the WGS reaction,and inhibit the condensation and coking reactions for maximizing the hydrogen yield and a stable catalytic performance.

关键词： APR Hydroxyacetone TOF Bio-based H_(2) Support effect

2004年12月26日苏门答腊—安达曼特大地震

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世界地震译丛 2005年第6期36卷 5-14页

作者： T.LAY H.kANAMORI C.J.AMMON M.NETTLES S.N.WARD R.C.ASTER S.L.BECk S.L.BILEk M.R.BRUDZINSkI R.BUTLER H.R.DESHON G.EkSTRM k.satake S.SIPkIN 石玉涛中国地震局地震预测研究所

发生在2004年12月26日（Mw=9．1～9．3级）和2005年3月28日（Mw=8．6级）的地震是过去40年中最大的两次地震，它们在欧亚大陆板块的东南部和印度-澳大利亚板块之间裂开一条长达1600km的断层。其中第一次地震引发的海啸吞噬了28．3万多... 详细信息

发生在2004年12月26日（Mw=9．1～9．3级）和2005年3月28日（Mw=8．6级）的地震是过去40年中最大的两次地震，它们在欧亚大陆板块的东南部和印度-澳大利亚板块之间裂开一条长达1600km的断层。其中第一次地震引发的海啸吞噬了28．3万多人的性命。苏门答腊岛班达亚奇附近的断层滑动了15m，但是在其北边，沿着尼科巴群岛和安达曼群岛，断层快速滑动的距离则小了很多。海啸和测地学的观测表明，在50min或更长的时间范围内北部的断层发生了更多的缓慢滑动。

关键词：苏门答腊大地震断层滑动大陆板块澳大利亚时间范围东南部测地学海啸群岛

Direct scaling of residual displacements for bilinear and pinching oscillators

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Earthquake Engineering and Engineering Vibration 2024年第1期23卷 129-149页

作者： Mohammad Saifullah Vinay k.Gupta Department of Civil Engineering Indian Institute of Technology KanpurKanpur 208016India

The estimation of residual displacements in a structure due to an anticipated earthquake event has increasingly become an important component of performance-based earthquake engineering because controlling these displacements plays an important role in ensuring cost-feasible or cost-effective repairs in a damaged structure after the *** attempt is made in this study to obtain statistical estimates of constant-ductility residual displacement spectra for bilinear and pinching oscillators with 5%initial damping,directly in terms of easily available seismological,site,and model *** of the available models for the bilinear and pinching oscillators are useful when design spectra for a seismic hazard at a site are not *** statistical estimates of a residual displacement spectrum are proposed in terms of earthquake magnitude,epicentral distance,site geology parameter,and three model parameters for a given set of ductility demand and a hysteretic energy capacity coefficient in the case of bilinear and pinching models,as well as for a given set of pinching parameters for displacement and strength at the breakpoint in the case of pinching model *** proposed scaling model is applicable to horizontal ground motions in the western *** earthquake magnitudes less than 7 or epicentral distances greater than 20 km.

关键词： residual displacement spectrum bilinear hysteresis model pinching hysteresis model nonlinear analysis scaling model

Analysis of the Oscillatory Flows of Multiple Shock Waves in a Constant Area Duct

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Journal of Thermal Science 2024年第3期33卷 794-806页

作者： k JAMES Jintu kIM Heuy Dong Department of Mechanical Engineering Andong National UniversityAndong36729Republic of Korea CAD-IT korea Co. Ltd.Seoul08591Republic of Korea

The oscillatory response of multiple shock waves to downstream perturbations in a supersonic flow is studied numerically in a rectangular *** shock waves are formed inside the duct at a shock Mach number of *** duct has an exit height of H,and the effect of duct resonance on multiple shock oscillations is investigated by attaching exit ducts of lengths 0H,50H,and *** downstream disturbance frequency varied from 10 Hz to 200 Hz to explore the oscillation characteristics of the multiple shock *** oscillatory response of shock waves under self-excited and forced oscillation conditions are analyzed in terms of wall static pressure,shock train leading-edge location,shock train length,and the size of the separation *** extent of the initial shock location increases with an increase in exit duct length for the self-excited oscillation *** analysis of the shock train leading edge and the spectral analysis of wall static pressure variations are *** variation in the shock train length is analyzed using the pressure ratio method for self-excited as well as forced *** RMS amplitude of the normalized shock train length(ζ_(ST))increases with an increase in the exit duct length for the self-excited oscillation *** the downstream perturbation frequency is increased,ζ_(ST)is decreased for exit duct *** all exit duct designs and downstream forcing frequencies,the size of the separation bubble grows and shrinks during the shock oscillations,demonstrating the dependence on duct resonance and forced oscillations.

关键词： shock train downstream disturbance supersonic flow shock wave boundary layer interaction duct resonance flow separation

Impact of Fin Arrangement on Heat Transfer and Melting Characteristics of Phase Change Material

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Journal of Thermal Science 2024年第2期33卷 435-456页

作者： Arun UNIYAL Yogesh k.PRAJAPATI Department of Mechanical Engineering National Institute of Technology UttarakhandSrinagar(Garhwal)246174India Department of Mechanical Engineering BIT SindriDhanbadJharkhand828123India

Present work investigates the heat transfer and melting behaviour of phase change material(PCM) in six enclosures(enclosure-1 to 6) filled with paraffin *** enclosures are equipped with distinct arrangements of the fins while keeping the fin's surface area equal in each *** analysis has been presented to recognize the suitable fin arrangements that facilitate improved heat transfer and melting rate of the *** wall of the enclosure is maintained isothermal for the temperature values 335 k,350 k and 365 *** length of the enclosure including fins is ranging between 0 and *** have been illustrated through the estimation of important performance parameters such as energy absorbing capacity,melting rate,enhancement ratio,and Nusselt *** has been found that melting time(to melt 100% of the PCM) is 60.5%less in enclosure-2(with two fins of equal length) as compared to the enclosure-1,having no *** the fin surface area equal,if the longer fin is placed below the shorter fin(enclosure-3),melting time is further decreased by 14.1% as compared to ***,among all the configurations,enclosure-6 with wire-mesh fin structure exhibits minimum melting time which is 68.4% less as compared to the *** on the findings,it may be concluded that fins are the main driving agent in the enclosure to transfer the heat from heated wall to the *** design and positioning of the fins improve the heat transfer rate followed by melting of the PCM in the entire area of the *** of the favourable vortices and natural convection current in the enclosure accelerate the melting phenomenon and help to reduce charging time.

关键词： phase change material enclosure fin melting fraction energy storage heat transfer

Radiative heat transfer analysis of a concave porous fin under the local thermal non-equilibrium condition:application of the clique polynomial method and physics-informed neural networks

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Applied Mathematics and Mechanics(English Edition) 2024年第9期45卷 1613-1632页

作者： k.CHANDAN k.kARTHIk k.V.NAGARAJA B.C.PRASANNAkUMARA R.S.VARUN kUMAR T.MUHAMMAD Amrita School of Artificial Intelligence Amrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia Department of Studies in Mathematics Davangere UniversityDavangere 577002KarnatakaIndia Computational Science Lab Amrita School of EngineeringAmrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia Department of Pure and Applied Mathematics School of Mathematical SciencesSunway UniversityPetaling Jaya 47500Malaysia Department of Mathematics College of ScienceKing Khalid UniversityAbha 61413Saudi Arabia

The heat transfer through a concave permeable fin is analyzed by the local thermal non-equilibrium(LTNE)*** governing dimensional temperature equations for the solid and fluid phases of the porous extended surface are modeled,and then are nondimensionalized by suitable dimensionless ***,the obtained nondimensional equations are solved by the clique polynomial method(CPM).The effects of several dimensionless parameters on the fin's thermal profiles are shown by graphical ***,the current study implements deep neural structures to solve physics-governed coupled equations,and the best-suited hyperparameters are attained by comparison with various network *** results of the CPM and physicsinformed neural network(PINN)exhibit good agreement,signifying that both methods effectively solve the thermal modeling problem.

关键词： heat transfer fin porous fin local thermal non-equilibrium(LTNE)model physics-informed neural network(PINN)