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由哥伦比亚号航天飞机激发的地震

世界地震译丛 1996年第2期 86-87页

作者： H.Kanamori j.mori D.L.Anderson T.H.Heaton 曾宥国家地震局地球物理研究所

南加州的一些地震台记录了1989年8月13日哥伦比亚号航天飞机返回爱德华空军基地时引起的大气冲击波(图1)。除了这个冲击波外,在帕萨迪纳宽频IRIS-TERRA台站还记录了一个清晰的周期为2～3s的脉冲,它比冲击波早到12.5s(图2)。这个脉冲也... 详细信息

南加州的一些地震台记录了1989年8月13日哥伦比亚号航天飞机返回爱德华空军基地时引起的大气冲击波(图1)。除了这个冲击波外,在帕萨迪纳宽频IRIS-TERRA台站还记录了一个清晰的周期为2～3s的脉冲,它比冲击波早到12.5s(图2)。这个脉冲也被洛杉矶市区附近的南加州大学记录到,此处它比冲击波晚到3s。这个脉冲源不易马上识别出来。我们能够表明这

关键词：冲击波哥伦比亚号洛杉矶盆地美国地质构造航天飞机地面运动地壳运动地震

2010年中国青海地震:超剪切破裂的中等地震

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世界地震译丛 2012年第4期43卷 1-9页

作者： D. Wang j. mori 张岩(译) 吕春来(校) 许忠淮(复校) 不详中国地震台网中心

通过对近场以及远震数据的分析,估算了2010年中国青海地震(MW6.9)的破裂速度。破裂起始模型的计算结果与YUS台站实测近场地震图的比较显示出约为5.0km/s的快速超剪切破裂传播。根据使用包络线反褶积法和经验格林函数事件的远震分析,在... 详细信息

通过对近场以及远震数据的分析,估算了2010年中国青海地震(MW6.9)的破裂速度。破裂起始模型的计算结果与YUS台站实测近场地震图的比较显示出约为5.0km/s的快速超剪切破裂传播。根据使用包络线反褶积法和经验格林函数事件的远震分析,在震中东南6.5km和41.8km的地方鉴别出2个高频脉冲,说明为2个子事件。高频脉冲事件的地点和时间也显示出4.7～5.8km/s的超剪切破裂速度。超剪切破裂速度可能致使破裂向玉树镇扩展时产生了严重破坏。

关键词：剪切破裂中等地震青海中国经验格林函数高频脉冲子事件破裂传播

北京清华园采暖前与采暖期PM10中有机碳与元素碳的污染特征

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北京清华园采暖前与采暖期PM10中有机碳与元素碳的污染特征

主喜马拉雅逆冲断裂的横向变化控制2015年尼泊尔廓尔喀地震的破裂长度

中国气象学会2003年年会

作者：杨复沫贺克斌贾英涛雷宇马永亮 S.Tanaka T.Okuda j.Kato j.mori 清华大学环境科学与工程系清华大学环境科学与工程系清华大学环境科学与工程系清华大学环境科学与工程系清华大学环境科学与工程系庆应大学化学系庆应大学化学系庆应大学化学系庆应大学化学系

＜正＞大气颗粒物中的含碳组分包括有机碳（OC）、元素碳（EC）和碳酸盐碳（CC）,其中OC与EC主要存在于较小的颗粒物如PM10之中。OC与EC并不是严格定义的实体,而是分别包含大量的有机物和功能基团。OC既可以是污染源直接排放的一次粒子... 详细信息

＜正＞大气颗粒物中的含碳组分包括有机碳（OC）、元素碳（EC）和碳酸盐碳（CC）,其中OC与EC主要存在于较小的颗粒物如PM10之中。OC与EC并不是严格定义的实体,而是分别包含大量的有机物和功能基团。OC既可以是污染源直接排放的一次粒子,也可以是有机气体在大气中转化而成的二次粒子,主要产生于燃烧、地质过程、道路尘和光化学反应等,也可产生于生物活动;EC则主要来自于化石燃料和生物质燃烧的直接排放,在大气中很稳定;CC细粒子的含量通常很小,在进行化学物种分析

关键词：大气污染物含碳颗粒物污染特征

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世界地震译丛 2020年第1期51卷 22-32页

作者： L.Bai S.L.Klemperer j.mori M.S.Karplus L.Ding H.B.Liu G.H.Li B.W.Song S.Dhakal 江勇(译) 李国辉(译) 白玲(校) 不详中国科学院青藏高原研究所

喜马拉雅造山带大地震活动频繁,影响着长达2500km的人口密集地带。2015年尼泊尔廓尔喀地震(MW7.8)发生在主喜马拉雅逆冲断裂(MHT)上,为陆陆碰撞带断裂活动特征的研究提供了最直接的观测资料。我们使用覆盖整个余震区的近震台站地震波形... 详细信息

喜马拉雅造山带大地震活动频繁,影响着长达2500km的人口密集地带。2015年尼泊尔廓尔喀地震(MW7.8)发生在主喜马拉雅逆冲断裂(MHT)上,为陆陆碰撞带断裂活动特征的研究提供了最直接的观测资料。我们使用覆盖整个余震区的近震台站地震波形数据对MHT进行研究。结果表明,MHT沿构造走向呈现清晰的横向变化,在主震区存在低喜马拉雅断坡,而在余震区东部变得更深且倾角更加平缓。余震区以东MHT界面上的地震波速表现为高速异常,可能与印度板块基底隆起的俯冲结构有关,余震区以西同样存在地震波速异常。MHT的总体形态结构变化控制了廓尔喀地震的破裂长度。

关键词：喜马拉雅造山带逆冲断裂破裂长度横向变化大地震尼泊尔控制地震波形数据

Error field penetration in j-TEXT tokamak based on two-fluid drift-MHD model

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Chinese Physics B 2024年第4期33卷 545-551页

作者：王文徐涛张仪 the j-TEXT team State Key Laboratory of Advanced Electromagnetic Technology International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma PhysicsSchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

An externally generated resonant magnetic perturbation can induce complex non-ideal MHD responses in their resonant *** have studied the plasma responses using Fitzpatrick's improved two-fluid model and program *** calculated the error field penetration threshold for *** addition,we find that the island width increases slightly as the error field amplitude increases when the error field amplitude is below the critical penetration ***,the island width suddenly jumps to a large value because the shielding effect of the plasma against the error field disappears after the *** scanning the natural mode frequency,we find that the shielding effect of the plasma decreases as the natural mode frequency ***,we obtain the m/n=2/1 penetration threshold scaling on density and temperature.

关键词： plasma responses drift-MHD model error field penetration

Storing Freshwater Versus Storing Electricity in Power Systems with High Freshwater Electric Demand

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journal of Modern Power Systems and Clean Energy 2024年第2期12卷 323-333页

作者： Mubarak j.Al-Mubarak Antonio j.Conejo Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOHUSA Department of Electrical Engineering Kuwait UniversityP.O.Box 5969Safat 13060Kuwait Department of Integrated Systems Engineering and the Department of Electrical and Computer Engineering The Ohio State UniversityColumbusOH 43210USA IEEE

We consider a power system whose electric demand pertaining to freshwater production is high(high freshwater electric demand),as in the Middle East,and investigate the tradeoff of storing freshwater in tanks versus storing electricity in batteries at the day-ahead operation *** storing freshwater and storing electricity increase the actual electric demand at valley hours and decrease it at peak hours,which is generally beneficial in term of cost and ***,to what extent?We analyze this question considering three power systems with different generation-mix configurations,i.e.,a thermal-dominated mix,a renewable-dominated one,and a fully renewable *** generation-mix configurations are inspired by how power systems may evolve in different countries in the Middle *** production uncertainty is compactly modeled using chance *** draw conclusions on how both storage facilities(freshwater and electricity)complement each other to render an optimal operation of the power system.

关键词： Power system operation freshwater production and transportation coordination day-ahead scheduling

Analysis of ancient mass extinction recoveries in marine environments: generating strategies for managing outcomes of the current mass extinction

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National Science Review 2024年第1期11卷 8-10页

作者： David j.Bottjer Department of Earth Sciences University of Southern California

The defining feature of a mass extinction and its associated recovery is the global amount of extinction that occurred[1]. However, there is finer-scale detail to the story, as seen in the ongoing modern mass extinction(the sixth mass extinction), which exhibits variable effects among marine ecosystems and environments, and hence geographic areas [1].

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Global weirding at mass extinction horizons

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National Science Review 2024年第1期11卷 10-12页

作者： Gregory j.Retallack Department of Earth Sciences University of Oregon

A strong motivation for studying mass extinctions is understanding how current climatic and biodiversity crises will affect creatures living on land such as ourselves. Perhaps the question is: how bad can it get? In that case, terrestrial Permian-Triassic mass extinctions are an irresistible worst-case scenario [1].

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Necrotic enteritis and antibiotic-free production of broiler chickens:Challenges in testing and using alternative products

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Animal Nutrition 2024年第1期16卷 288-298页

作者： Robert j.Moore School of Science RMIT University

The global trend towards raising broiler chickens without the use of in-feed antibiotics(IFAs) means that there is an ongoing need to develop alternative treatments capable of delivering the benefits that IFAs previously provided. IFAs supported the productivity performance of chickens and played a key role in maintaining their health. Necrotic enteritis(NE) is an important disease of broilers that affects health,productivity, and welfare, and was previously well controlled by IFAs. However, with the reduction in IFA use, NE is resurgent in some countries. Vaccines and various feed additives, including pre-, pro-, and postbiotics, phytobiotics, fatty acids, and phage therapies have been introduced as alternative methods of NE control. While some of these feed additives have specific activity against the NE pathogen, Clostridium perfringens, most have the more general goal of reinforcing gut health. Extensive reviews of the effects of many of these feed additives on gut health have been published recently. Hence, rather than cover previously well reviewed areas of research this review focuses on the challenges and pitfalls in undertaking experimental assessment of alternative NE treatments and translating laboratory research to real world commercial production settings. The review is based on the author's particular experience,reading, thoughts, and analysis of the available information and inevitably presents a particular understanding that is likely to be at odds with others thinking on these issues. It is put forward to stimulate thinking and discussion on the issues covered.

关键词： Necrotic enteritis