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1.
《世界地震译丛》2006,(6):77-80
第1期(观测地震学专辑,译自《国际地震与工程地震学手册》)第17章观测地震学中的挑战(W.H.K.Lee)陈虹译(1)第19章陆地和海底的地震噪声(S.C.Webb)李纲译(15)第20章美国对全球数字地震台网的贡献(C.R.Hutt H.F.Bolton L.G.Holcornb)吴晶译(28)第21章地震图的结构及解释(O.Kulhanek)李纲译(44)第22章数字地震信号分析(F.Scherbaum)陈虹译(62)第23章地震台阵在地震与禁核试地震学中的用途(A.Douglas)郑建常译(70)第24章监测执行《全面禁止核试验条约》的地震学方法(P.G.Richards)吴晶译(83)第2期论文帕克菲尔德地震预报试验的成败(A… 相似文献
2.
《山西地震》1977,(2)
为了供有关同志了解山西省历史地震情况,特分区(市)编选了 五级以上简明地震目录。时间截止到一九七四年底。 二.1022.4.一 l大同、应县 D(39o.7 i 113”.l)l/\l(6 ) 21305.5.吕 D怀仁、大同一带i(39”.8 113”.1) /\至九 l(6 ) 371580.9.5 平 鲁S(39o.52112”.3)B 七I(5寺) 41582.3.一]大 同D(4旷.11 113”.2)【六3(5) 5 1583.5.18 浑源、厂灵一带9(39”.7 113”.8)l 七(5十) 691626.6.28 灵 丘2(39”.4Jll4”.2)1 九g(7) 7if673.10.18 天 钧1(40o.5114”.1)g 七g(5十) 8 512.5.21代 县g(39”.of 113”.0)l l(7十) 9 S1038.1.9 定襄、… 相似文献
3.
本文是克兰平(Stuart Crampin)、埃文斯(Russ Evans)、多伊尔(MarkDoyle)和国际扶轮社基金会会员戴维斯(J.Peter Davis)共同撰写的评论性文章。它主要对格普塔(I.N.Gupta)、赖亚尔(A.Ryall)和萨维奇(W.U.Savage)关于膨胀引起的各向异性介质中剪切波分离问题的论文进行了评述。译载如下: 相似文献
4.
中美强地面运动研究讨论会(Sino-Ameri-can Workshop on Strong-Motion Studies)于1988年12月13日至15日在美国加利福尼亚州的帕萨迪纳(Pasadena)加州理工学院举行。美国方面参加这次讨论会的有:加州理工学院的伊万(W.D.Iwan)和豪斯纳(G.W.Housner)、美国科学基金会的阿斯蒂尔(C.Astill)、美国地质调查局的巴孔(W.Bakun)和布尔(D.Boore)、南加州大学的邓大量、纽约州立大学宾厄姆顿分校的吴大铭、加州大学伯克利分校的亚伯拉罕松(N.Abrahamsson)、拉蒙特-多 相似文献
5.
《Acta Geochimica》2021,(2)
To investigate equilibrium mercury(Hg) and lead(Pb) isotope fractionation caused by the nuclear volume effect(NVE) in crystals,the electron densities at nuclei(i.e.,|Ψ(0)|2) for Hg-or Pb-bearing crystalline compounds were investigated by using the relativistic spin orbit zeroth-order regular approximation(ZORA) method with a three-dimensional periodic boundary condition based on the density functional theory(DFT).Many isotope fractionation factors of crystalline compounds are provided for the first time.Our results show,even at1000℃,NVE-driven Hg and Pb isotope fractionation are meaningfully large,i.e.,range from 0.12‰ to 0.49‰(~(202)Hg/~(198)Hg),from-0.20‰ to 0.17‰(~(208)Pb/~(206)Pb) and from-0.08‰ to 0.06‰(~(207)Pb/206 Pb) relative to Hg~0 vapor and Pb~0 vapor,respectively.Specifically,the fractionations range from-0.06‰ to-0.20‰(~(208)Pb/~(206)Pb)and from-0.02‰ to-0.08‰(~(207)Pb/~(206)Pb) for Pb2+-bearing species,from 0.10‰ to 0.17‰(~(208)Pb/~(206)Pb) and from 0.04‰ to 0.06‰(~(207)Pb/~(206)Pb) for Pb~(4+)-bearing species in crystals.All calculated Hg-bearing species in crystals will enrich heavier isotope(~(202)Hg) relative to Hg~0 vapor.Meanwhile,Pb~(4+)-bearing species enrich heavier Pb isotopes(~(208)Pb and ~(207)Pb) than Pb~(2+)-bearing species in crystals,which the enrichment can be up to 0.37‰(~(208-)Pb/~(206)Pb) and 0.14‰(~(207)Pb/~(206)Pb) at 1000 ℃,due to their NVEs are in opposite directions.The NVE-driven MIFs of Hg isotopes,which are compared to the Hg~(202)-Hg~(198)baseline,are up to-0.158‰(Δ_(NV)~(199)Hg),-0.024‰(Δ_(NV)~(200)Hg) and-0.094‰(Δ_(NV)~(201)Hg) relative to Hg~0 vapor at500 0 C.For all studied Hg-bearing species in crystals,the MIFs of two odd-mass isotopes(i.e.,Δ_(NV)~(199)Hg and Δ_(NV)~(201)Hg)will be changed proportionally and their ratio(i.e.,Δ_(NV)~(199)Hg/Δ_(NV)~(201)Hg) will be a constant 1.67.The NVE can also cause mass-independent fractionations for ~(207)Pb and 204 Pb compared to the baseline of ~(208)Pb and ~(206)Pb.The largest NVEdriven MIFs are 0.043‰(Δ_(NV)~(207)Pb) and-0.040‰(Δ_(NV)~(204)Pb) among all the studied species relative to Pb~0 vapor at 500 0 C.The magnitudes of odd-mass isotope MIF(Δ_(NV)~(207)Pb) and even-mass isotope MIF(Δ_(NV)~(204)Pb) are almost the same but with opposite signs,leading to the MIF ratio of them(i.e.,Δ_(NV)~(207)Pb/Δ_(NV)~(204)Pb) is-1.08. 相似文献
6.
《世界地震译丛》2005,(6):89-92
第1期全球地震台网记录苏门答腊-安达曼特大地震(J.PARK K.ANDERSON R.ASTER,等)……………………………………邹本良等译(1)在斯里兰卡亲历亚洲海啸(C.CHAPMAN)…………………………………………杨智娴译(6)苏门答腊—安达曼地震的GPS分析(S.A.KHAN.GUDMUNDSSON)……………………………………………左玉玲译(9)苏门答腊地区地壳的地磁影象(M.PURUCKER T.ISHIHARA)…………………左玉玲译(13)苏门答腊MW=9.3级地震会触发地磁急变吗?(F.FLORINDO P.D.MICHELIS A.PIERSANTI,等)………………………左玉… 相似文献
7.
Zhixian Cao Prot. Dr.-Ing.. Director of Institute of Hydraulic Engineering Tianjin University. Tianjin . China. Wensheng WangSenior Engineer Associate Director of Lower Haihe River Administration Bureau. Ministry of Water Resources. Tianjin 《国际泥沙研究》1997,(3)
I.~ODUCTIONSuspendedsedimenttransportcapacity(SSTC)ofopenchannelflowisoneofthebasicsubjectsinsedimenttransportmechanicsandsedimentationengineeringpractice.Mostexistingformulationsareempiricalandsemiempiricalorrestheavilyonassumptionswhicharenotyetjustified.Thisarisesmostlybecauseofthecomplexityoftheproblem.Forafullydeveloped,in-equilibriumflowinawiderectangularchannel,theSSTCcanbbdeterminedasfollowsor=n:,ty)cab)-dy=Ca'I(l)1I=J4(D)'exp[--V,(n)]'da(2)unwhereCTIsSSTC,uistheaveragedflo… 相似文献
8.
《世界地震译丛》2003,(6)
第1期一种复杂的余震序列模型(Y.Moreno A.M.correigJ .B.Gomez,等)邵辉成译(1)具有脆性形变和蠕动变形的复合单断层系模型中的应力、滑动与地震(Y.Ben一Zion)陈时军等译(13)日本鹿儿岛的地震对:应力影区中的凹凸体破裂(H .Horikawa)李国荣译(46)考虑应力触发余震的第三维:1993年俄勒冈克拉马斯福尔斯地震序列(J,G.CriderD,P.Sehaff D.D,Pollard,等)···········……王俊国译(62)研究意大利南部地震区地电时间波动与地震相互关系的新方法(L .Telesea V.Cuomo V.Lapenna,等)朱大庆译(67)用多学科方法研究埃特纳火山喷发… 相似文献
9.
维特勒森奖包括一枚奖章和5万美元的奖金。此奖是表彰在科学研究中对地球、地球演化史及地球与宇宙的关系方面有精辟见解,取得杰出成就的人的。该奖由哥伦比亚大学授予,并由维特勒森(G.Unger Vetlesen)基金会颁发奖金。该基金会的资金是挪威-美国航空公司的已故董事长维特勒森捐赠的遗产。为了表彰哈伯特(M.K.Hubbert)运用物理原理解决有重大意义的地质问题,从而在地球科学方面所作出的突出贡献,哥伦比亚大学于1981年12月授予他维特勒森奖。曾经获得该奖的人还有:1960年-尤因(M.Ewing);1962年-杰弗里斯(H.Jeffreys)和迈因斯(Felix A.V.Meinsz);1964年-埃斯克勒(Pentti Eelis Eskola)和霍姆斯(A.Holmes);1966年-奥尔特(Jan HendrikOort);1968年-布拉德(E.Bullard)和伯奇(F.Biich);1970年-朗科恩(S.K.Runcorn)、考克斯(A.V.Cox)和多伊尔(R.D.Doell);1973年-福勒(W.A.Fowler);1974年-佩克里斯(C.L.Pekeris)以及1978年-威尔逊(J.T.Wilson)。 相似文献
10.
谢礼立 《地震工程与工程振动》1994,(2)
书名:《工程隔震概论》 ("An Introduction to Seismic Isolation") 作者:R.I.史金楠 (R.I.Skinner) W.H.鲁宾逊 (W.H.Robinson) G.H.麦克凡莱 (G.H.McVerry) 出版社:英国约翰维莱和森司出版社(John Wiley and Sons, UK) 出版时间:1993年 相似文献
11.
|v|=v 《地震学报(英文版)》1999,12(4):413-418
IntroductionGenerallyspeaking,theinclusionofanisotropy(exceptdeclaration,anisotropyreferstohomogenousanisotropy)rendersthemathematicalformulationquitecomplicated.Snell'Slawisnotanexceptionandthecalculationofreflectionandtransmissionanglesisnotatrivialtask.ThegraphicalapproachestocalculatingreflectionandtransmissionanglesforanisotropicmediawerepresentedbyAuld(1973)andRokhlin,etal(1986).DaleyandHorn(1977,1979)andSlawinski(1996)deriveSnell'slawintheparticularcasesoftransverselyisotropicandelli… 相似文献
12.
《CT理论与应用研究》2007,(2)
顾问(Advisors)陈运泰(院士)(CHEN Yun一tai)陈惟昌(CHEN Wei一ehang)潘晓川(PAN Xiao一ehuan)罗吴美英(LOU一恻Mei一ying)陈顺(院士)(CHEN Yong)戴汝平(DAI Ru一ping)王革(似NGGe) J .F.Bertrajn何继善(院士)(HE Ji一shan)刘国权(LIU Guo一quan)徐家兴(XU J ia一x 1 ng) 5 .J.Duda主编(Editor-in一Chie约王椿铺(WANG Chun一yong)副主编(Assoeiate Editor-in一Chie幻郭履灿(常务)(GUO Lu一ean)谢强(XIE Qiang)陈志强(CHEN Zhi一qiang)童双立(TONG Shuang一11)许忠淮(XU Zhong一huai)丁厚本(DING Hou一ben)… 相似文献
13.
Li Ying Zhao Weiming Ma Heqing 《中国地震研究》2005,19(2):192-200
INTRODUCTION Theseismicquiescencebeforelargeearthquakesisoneoftheprecursorsthatattractstheattention ofseismologistsworldwide.Mogi(1969)investigatedthisphenomenonfirst.Ohtake(1981),Wyss(1988)andSongJungao,etal.(1994)proceededwithstudiesinthisarea.Inthispap… 相似文献
14.
《中国科学:地球科学(英文版)》2021,(6)
Scleractinian corals exhibit a dual trophic pattern of autotrophic photosynthesis and heterotrophic predation.However,whether corals can adjust their trophic status under contrasting environmental conditions remains unclear.In our study,70 scleractinian corals(Favia palauensis) were collected from Sanya and the Xisha and Nansha Islands in the South China Sea.We measured the zooxanthellae density(ZD) and δ~(13)C of zooxanthellae(δ~(13)C_z) and host tissue(δ~(13)C_h) and analyzed the difference between δ~(13)C_h and δ~(13)C_z(i.e.,△~(h-z)~(13)C).The relatively high ZD and δ~(13)C_z values in the samples from Sanya indicate that these corals might have higher photosynthetic rates and autotrophic abilities than those from Xisha and Nansha.In contrast,the relatively low δ~(13)C_h and △~(h-z) ~(13)C values in the samples from Xisha and Nansha suggest that these corals might have a higher heterotrophic ability than those from Sanya.In addition,we tested the coral tissue biomass and skeletal δ~(13)C(δ~(13)C_s) in the samples from Sanya and examined their correlations with △~(h-z)~(13)C.The results showed a negative correlation,indicating that the more the organic material produced by the coral,the stronger its heterotrophic ability.Our results show that corals can adjust their trophic status under different environmental and physiological conditions,which is essential for increasing their adaptability to different environmental conditions. 相似文献
15.
1INTRODUCTIONThedrainagenetWorkisoneofimportantcomponentsinafluvialsyStem.Atypicalfluvialsystemiscomposedofthreezones,asSchumm(1977)pointedout,therunoffandsedimentyield,transportationandsettlingzones.Asearlyasinthemiddleofthiscent'Ury,Horton(1945)madeasignificantquantitativeexplanationtohydro-geomorphologyinadrainagenetworksystem,andderivednetworkstatisticslaws.Inthe1970'sSmart(1973)hadtopologicallystudiednetWorkstrUcture.Fromthe1980'sandonst'Udiesoffractalandfractionaldimensioninadra… 相似文献
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17.
利用云南地震台网全面数字化之后(2008-2017年)的记录资料,按照《地震震级的规定》(GB17740-2017)规定的测定方法,对云南地震台网记录的ML≥4. 0地震,重新人工测量其宽频带面波震级MS(BB)和矩震级Mw,与中国地震台网测定的MS7以及美国地震台网(NEIC)测定的MW(NEIC)进行对比分析。结果表明:①MS(BB)和MS7测量方法相同,量规函数相等,两者一致性最好。②对于面波震级与矩震级,当MW在3. 5左右时,MS7,MS(BB)与MW一致性最好;MW<3. 5时,MS7和MS(BB)均小于MW;MW> 3. 5时,MS7和MS(BB)大于MW。③MS(BB)与美国地震台网相比较,MS(BB)在5. 5和6. 0左右时,与MW(NEIC)一致性最好,几乎相等;MS(BB)<5. 5时,MS(BB) 6. 0时,MS(BB)> MW(NEIC)。④MW和MW(NEIC)之间存在偏差,MW整体小于MW(NEIC)。 相似文献
18.
PANG Bingdong Assoc. Prof Dept. Of Basic Sciences Beijing Insitute of Meteorology Beijing China 《国际泥沙研究》1997,(3)
LINTRODUCTIONDisastersofdebrisflotvoccurfrequentlyinChina.Mostofthemareinrainstormtype.TherainStormdebrisflowiscausedbyStormrainfallthatinducesastrongStreamflowsonloosematerialsinwatershed.Theeffectsofprecipitationonthedebrisflowareasfollows(ChengduResearchInstituteC;DisasterandEnvironment,1989)f(l)Precipitationacceleratesthematerialsofloosedebristogather,(2)PrecipitationsuPPlywatercomponentofdebrisflow,(3)Precipitationprovidesdynamicconditionsfordebrisflow,(4)Precipitationisatrigg… 相似文献
19.
Qin Chengzhi ) Zhou Chenghu ) Pei Tao ) Li Quanlin ) )State Key Laboratory of Resources Environmental Information System Institute of Geographic Sciences Natural Resources Research CAS Beijing China )Institute of Geophysics CEA Beijing China 《中国地震研究》2004,(2)
INTRODUCTIONMigrationofstrongearthquakesisaphenomenonwherebystrongearthquakestakeplaceinsuccessionincertainspatiallyregularpatterns (ZhangGuomin ,etal,2 0 0 1 ) .Seismologistsintheworldhavenoticedthisphenomenonforalongtime .Manyinstanceswerediscoveredinthepastdecades ,suchasthemigrationofstrongearthquakesalongtheNorthAnatolianFaultinTurkeysince1 939(Richter,1 958)andthemigrationofaseriesofearthquakes (MS ≥ 6 0 )aftertheMS7 9earthquakeinKwandong ,Japan (Utsu ,1 987) .Theexamplesofre… 相似文献
20.
《Acta Geochimica》2017,(3)
Co(Ⅱ)and Ni(Ⅱ)are two common toxic heavy metals,and may simultaneously exist in contaminated water,soil,and sediment systems in Earth’s surface environment.Under this circumstance,competitive adsorption between the two metals may influence their migration,toxicity,and bioavailability.In this research,the competitive sorption of Co(Ⅱ)and Ni(Ⅱ)on γ-Al_2O_3was studied using both macroscopic sorption experiments and extended X-ray absorption fine structure(EXAFS)spectroscopy.Results suggest that Ni(Ⅱ)reduced the amount of Co(Ⅱ)sorption in a binary-solute system at pH 6.0.This is because both Co(Ⅱ)and Ni(Ⅱ)form inner-sphere surface complexes during sorption on γ-Al_2O_3and compete for the surface reactive sites.However,Co(Ⅱ)exhibited a negligible influence on sorption amount of Ni(Ⅱ)under the same conditions,which suggests Ni(Ⅱ)has a stronger affinity to alumina surface.At pH 7.5,Co(Ⅱ)and Ni(Ⅱ)sorption density were much higher than that at pH 6.0,but there no mutual competitive effect was observed.EXAFS analysis further revealed that formation of layered double-hydrated precipitates was the dominant sorption mechanism for both Co(Ⅱ)and Ni(Ⅱ)at pH 7.5.Because this type of sorption does not rely on surface reactive sites,there was no competition between Co(Ⅱ)and Ni(Ⅱ).This finding sheds light on risk assessment and remediation of Ni/Co pollution. 相似文献