1)Upper Mantle上地幔
1.From 6 months seismic data continuously recorded by stations directly set up in Tian shan area, We picked clear teleseismic P arrivals, and three dimensional velocity image of Tian shan crust and upper mantle was given with the ACH technique.利用在天山地区直接布设的观测台站 ,进行六个月连续观测所取得的地震数据 ,挑选清晰远震的P波到时数据 ,采用ACH层析成像方法绘出了天山地区地壳和上地幔的三维速度图象 。
2.Our discussion is focused on the location of the collision boundary between the Sino-Korea and Yangtze blocks in the Yellow Sea, the unusual upper mantle beneath the East China Sea continental shelf and its lithospheric formation and evolution, the cause of the high-velocity layer in the .利用中国边缘海域近年的地震层析成像结果,根据速度异常和各向异性分析东海、黄海和南海北部的岩石层结构和构造,讨论中朝块体和扬子块体在黄海内部的拼合边界(黄海东部断裂带)、东海陆架盆地上地幔异常与岩石层形成演化、南海北部地壳底部高速层的成因及地幔活动等问题。
3.Based on the petrological, petrochemical and geochemical analyses about these rocks, it is concluded in this paper that the xenoliths were originated from the upper mantle, and comprised of both primitive pyrolite and the infusible solid residual of the upper pyrolite while the basaltic magma was .根据其岩石学、岩石化学及地球化学特征分析,包体来源于上地幔,其成因既有原始地幔岩,亦有上地幔岩经部分熔融出玄武岩浆后的难熔固相残留物,被火山喷发携带至地表。
英文短句/例句
1.New seismic constraints on the upper mantle structure of the Hainan plume海南地幔柱上地幔结构新的地震学约束
2.The issue of upper vs whole mantle convection is critically discussed.最后,着重讨论了上地幔与全地幔对流的论争。
3.There is a higher heat production in the upper mantle below oceans than below continents.大洋下的上地幔要比大陆下的上地幔有较高的热产率。
4.Like the core of earth, the mantle can also be divided into two concentric layers, the lower mantle and the upper mantle.就像地球的核部一样。地幔也可分为两个同心圆圈层，下地幔和上地幔。
5.PRELIMINARY STUDY ON THE LATERAL VELOCITY VARIATION OF THE UPPER MANTLE IN NORTHERN XINJIANG AND ITS ADJOINING REGIONS北疆上地幔波速特征侧向变化的探讨
6.Numerical Modeling of upper Mantle Convection and Orogeny of the Tianshan Mountains;天山上地幔对流与造山运动数值模拟
7.Phase Transition of Upper Mantle Rock in Eastern China and Its Significance中国东部上地幔岩石相转变及其意义
8.Characteristics of Pb Isotopic Composition in Upper Mantle Cenozoic for China Continent中国大陆新生代上地幔铅同位素特征
9.Applications of Seismic Surface Waves in the Study of Structures of the Crust and Upper Mantle (An Overview)地震面波在研究地壳上地幔构造中的应用(综述)
10.STUDY ON CRUST AND UPPER MANTLE STRUCTURE IN NORTH HENAN AND ITS SURROUNDINGS豫北及其外围地区地壳上地幔结构研究
11.THE ISOSTATIC RESIDUAL GEOID OVER EURASIA AND THE STRENGTH OF THE UPPER MANTLE欧亚地区均衡残差大地水准面和上地幔强度
12.PRIMARY STUDY OF CRUSTAL AND UPPER MANTLE VELOCITY STRUCTURE OF SICHUAN PROVINCE四川地区地壳上地幔速度结构的初步研究
13.Surface Wave Tomography of the Crust and upper Mantle in Sichuan-Yunnan Region;川滇地区地壳及上地幔结构面波层析成像
14.Electrical Structure Study of the Crust-upper Mantle in Dabie-Sulu Orogen大别—苏鲁造山带地壳—上地幔电性结构研究
15.A Seismic Tomography Study on Crust and Upper-mantle Structure Beneath the North-South Zone in China;南北带地壳上地幔结构的层析成像研究
16.Surface Wave Tomography in China and Adjacent Areas;中国及邻区地壳上地幔面波频散层析成像
17.The Chemical and Isotopic Compositions and Their Origin of Upper Mantle Volatiles in Eastern China;中国东部上地幔不同类型流体组成及其性质
18.Nd ISOTOPIC COMPOSITION AND EVOLUTION OF THE UPPER MANTLE IN THE ARCHAEAN OF NORTH CHINA: CONSTRAINTS ON THE MANTLE HETEROGENEITY OF THE UNMETASOMATIC CONTINENTAL LITHOSPHERE华北太古代上地幔钕同位素组成、演化及对该区岩石圈地幔不均一性的制约
相关短句/例句
upper mantle rock上地幔岩
1.In the former province, the upper mantle rocks consist of harzburgite and lherzolite, characterized by the concentration of mantle type elements (K T) and the smooth-weak enrichment type REE patterns; the ocean volcanic rocks are dominated by basic rocks of subalkaline and oceanic ridge type; lead isotopes are noted for 206Pb/ 204Pb<18.前者上地幔岩有方辉橄榄岩和二辉橄榄岩 ,幔型元素 (KT)富集 ,REE呈平坦—弱富集型 ;大洋火山岩以基性岩、亚碱性、洋脊型为主 ;铅同位素2 0 6 Pb/2 0 4 Pb <18。
3)Mantle uplift地幔上隆
4)Crust and upper mantle地壳上地幔
1.From two years seismic data continuously recorded by stations directly set up from Fuyun to Kuerle, P_arrival times were picked and image of crust and upper mantle structure was given with the technique of seismic tomography.利用在2002~2004年新疆天山地区富蕴—库尔勒布设的流动地震台,经过连续两年的观测所采集的数据,挑选远震P波到时数据,进行了地震层析反演处理,获得此剖面地震层析图像推断地壳上地幔的速度结构。
2.The results show that the crust and upper mantle structures present obvious lateral and vertical inhomogeneity.利用渤海湾及其邻区的10多条地震测深剖面段观测资料,对部分剖面进行二维射线追踪、走时拟合及合成地震图计算,获得了本区地壳上地幔速度结构。
3.The three dimensional S wave velocity structure of the crust and upper mantle of Chinese Mainland and its neighboring region is obtained by genetic algorithm of surface wave tomography, with smoothness constraint, based on 25 wave group velocities from 10 to 92 s, measured from long period Rayleigh waves recorded by 11 stations of CDSN and 12 digital seismometers surrounding China.利用中国数字化地震台网 (CDSN) 1 1个台站和 IRIS在中国周边的 1 2个数字地震台站的长周期瑞利面波资料 ,根据面波群速度层析成像方法反演得到的 1 0～ 92 s周期范围内的2 5个中心周期的群速度分布资料 ,用光滑约束的遗传算法反演得到了中国大陆及其邻域的地壳上地幔横波三维速度结构 ;给出了沿北纬 30°、 38°两条东西向剖面和沿东径 90°、 1 2 0°两条南北向剖面的地壳上地幔横波速度结构 ,并在 4个不同深度的水平切片上展示了中国大陆及邻域的横波速度分布图
5)Crust-upper mantle地壳-上地幔
6)uppermost mantle上地幔顶部
1.The Pn wave velocities structures of uppermost mantle beneath southern Europe;欧洲上地幔顶部Pn速度结构
延伸阅读
地幔对流说地幔对流说mantleconvectionhypothesis一种说明地球内部物质运动和解释地壳或岩石圈运动机制的假说。它认为在地幔中存在物质的对流环流。在地幔的加热中心，物质变轻，缓慢上升形成上升流，到软流圈顶转为反向的平流，平流一定距离后与另一相向平流相遇而成为下降流，继而又在深处相背平流到上升流的底部，补充上升流，从而形成一个环形对流体。对流体的上部平流驮着的岩石圈板块作大规模的缓慢的水平运动。在上升流处形成洋中脊，下降流处造成板块间的俯冲和大陆碰撞。1928年英国地质学家A.霍姆斯认为上升流处地壳裂开，形成新的大洋底，对流的下降流处地壳挤压形成山脉。1939年D.T.格里格斯提出，由于岩石热传导不良，放射热的聚集导致对流。60年代后期板块构造学建立以后，地幔对流运动被普遍认为是板块运动的驱动力。地球岩石圈下的软流圈有10％的融熔体。岩石圈以下的固体地幔因高温高压而表现为像粘滞液体一样的韧性，并能产生流动。地幔中因放射性同位素蜕变产生热而加温，密度变小，于是轻物质向上、重物质向下运动，以便达到最低位能的稳定状态，这就是地幔对流，速度非常慢，其上升流可持续几千万年到几亿年。地震波速的各向异性的发现，以及由此提出的地幔对流引起晶体定向排列的假说，有力地支持了地幔对流说。J.摩根在20世纪70年代提出了一种单轴羽状地幔对流模式。对流体以每年几厘米的速度从地幔底部升起，形成以上升流为轴心，下降流在外的圆筒状对流体。上升流所对着的地壳区域就是热点。
