|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 利用接收函数研究六盘山地区地壳上地幔结构特征显示文摘利用六盘山地区宽频带流动地震台阵的远震体波记录,采用接收函数方法研究台阵下方的地壳上地幔结构,并采用接收函数振幅加权叠加方法对这一地区平均地壳厚度和泊松比进行估算.研究结果显示,青藏高原东北缘和鄂尔多斯的接触过渡带接收函数震相复杂,地壳变形强烈,青藏高原东北缘地壳平均厚度约为51.5km,六盘山下方地壳厚度在53.5km,鄂尔多斯西南缘地壳平均厚度约为50km,整个莫霍面呈下凹状.泊松比计算结果显示,六盘山东侧和西侧地壳泊松比值在正常范围内(0.25~0.26),六盘山下方的地壳泊松比值偏高(0.27~0.29),推测与地壳中存在部分熔融.泊松比值的横向变化,指示测线范围地壳物质组成和力学性质存在横向差异,反映在欧亚板块与印度板块碰撞作用影响下青藏高原下地壳物质存在向北东方向的流动. | 童蔚蔚 王良书 米宁 徐鸣洁 李华 于大勇 李成 刘绍文 Mian Liu Eric Sandvol | 2007 | 中国科学(D辑)2007，37，A01： | 19 |
| 2 | Receiver function analysis for seismic structure of the crust and uppermost mantle in the Liupanshan area, China显示文摘A portable broadband seismic array was deployed from the northeast Tibetan Plateau to the southwest Ordos block, China. The seismic structure of the crust and uppermost mantle of the Liupanshan area is obtained using receiver function analysis of teleseismic body waves. The crustal thickness and Poisson's ratios are estimated by stacking the weighted amplitudes of receiver functions. Our results reveal complex seismic phases in the Liupanshan area, implying intense deformation at the boundary between the Tibetan Plateau and the Ordos block. The average crustal thickness is 51.5 km in the northeast Tibetan Plateau, 53.5 km in the Liupan Mountain and 50 km in the southwest Ordos block, resulting in a concave Moho beneath the Liupan Mountain. The Poisson's ratio of the Liupanshan area varies between 0.27-0.29, higher than the value of 0.25-0.26 to the east and west of the Liupan Mountain, suggesting partial melting in the lower crust. The variance in Poisson's ratio across the Liupan Mountain indicates notable changes in the crustal composition and mechanical properties, which may be formed by the northeastward flow of the Tibetan lower crust during the India-Eurasia collision. | TONG WeiWei WANG LiangShu MI Ning XU MingJie LI Hua YU DaYong LI Cheng LIU ShaoWen LIU Mian Eric SanDvol | 2007 | Science China Earth Sciences2007，50，z2： | 9 |
| 3 | 青藏高原东部的Pn波层析成像研究显示文摘利用INDEPTH/ASCENT台阵和其它布设在青藏高原的流动宽频带地震仪数据,反演了青藏高原东部和周边区域的上地幔顶层Pn波速度以及台站延迟.研究区域的平均Pn波速度是8.1km/s,略高于中国大陆的平均Pn波速度.低速区主要分布在羌塘地块的西部和松潘—甘孜地块,高温异常的岩石圈上地幔很可能是导致这一低速区的原因.班公-怒江缝合带东端区域的Pn波速度达到8.35km/s,这一高速区可能与向北俯冲的印度板块(东端)有关.另一Pn波高速区分布在祁连山和昆仑山之间,主要由柴达木盆地和共和盆地及其周边地区,两个并不完全连续的高速异常区组成,它可能对应于特提斯洋闭合时北部增生的克拉通地体;在后来的欧亚板块与印度板块的碰撞中,这一地体有可能阻挡了青藏高原向北的生长.相对密集的台站提供了高分辨率的速度结构横向分布和地壳厚度变化.台站延迟显示青藏高原北部和东部的地壳存在显著的减薄——松潘—甘孜地块东北缘的地壳厚度仅为约50km,而羌塘地块东部唐古拉山地壳最厚,达到75km,这可能是由于印度—欧亚板块碰撞引起的羌塘地块内部变形增厚所致. | 王海洋 Thomas HEARN 陈永顺 裴顺平 冯永革 岳汉 金戈 周仕勇 王彦宾 盖增喜 宁杰远 Eric Sandvol James NI | 2013 | 地球物理学报2013，56，2： | 6 |
| 4 | 利用瑞利面波相速度和方位各向异性研究鄂尔多斯块体的岩石圈变形特征显示文摘利用在鄂尔多斯块体内部布设的45个宽频带流动台站和固定台站的资料,用双平面波方法反演了20-143 s共12个周期的基阶瑞利面波的平均相速度和方位各向异性,并反演了一维S波速度结构.反演结果显示50-100 s中长周期的瑞利面波相速度高于AK135速度模型的相速度。为高速异常,S波速度显示高速异常主要位于180 km深度范围内,表明鄂尔多斯块体保留有厚的高速岩石圈.20-111 s周期的方位各向异性强度小于1%,较小的各向异性表明鄂尔多斯块体岩石圈变形较弱.20-50 s周期的平均快波方向为近EW向,67-143 s周期的平均快波方向为NW-SE向,相对发生了整体改变,快波方向的转变约开始于80-100 km深度范围,这表明岩石圈上下部存在着由不同变形机制导致的各向异性.上部岩石圈中各向异性可能主要为残留的"化石"各向异性,而下部岩石圈各向异性可能是现今板块构造运动导致的变形而形成.鄂尔多斯块体岩石圈垂向上的变形差异可能主要与岩石圈温度随深度的变化以及青藏高原NE-NNE向挤压引起的上部岩石圈逆时针旋转有关. | 姚志祥 王椿镛 Eric Sandvol 陈永顺 曾融生 | 2014 | 地球物理学报2014，57，9： | 3 |
| 5 | Mantle anisotropy across the southwestern boundary of the Ordos block,North China显示文摘Located at the northeastern margin of the Tibetan plateau,the Ordos block is a stable tectonic unit in North China.With its active boundary fault zones,the Ordos block played an important role in the eastward extrusion mechanism of the Tibetan plateau.Peking University deployed a linear array of 15 portable broadband seismometers across the western Weihe graben during September 2005 to August 2006 and later a 2-D seismic array(Southwest Ordos Array) of 14 portable broadband seismometers during 2007-2008 at its southwestern boundary.Analyses of shear wave splitting of SKS and SKKS phases at these stations show that the fast directions trend ~110° with an average delay time of 0.9 s in the southwestern margin of the Ordos block.The agreement between the lithosphere deformation indicated by GPS data and Quaternary fault slip-rate observations and the mantle flow represented by shear wave splitting implies that accordant deformation patterns from lithosphere to asthenosphere in relation to the eastward extrusion of the Tibetan plateau could extend at least to 200 km depth.Spatial distribution of splitting polarization directions indicates that the mantle flow driven by the Tibetan plateau is blocked by the Ordos block and locally restricted in a narrow channel along the Qinling-Dabie fault zones between the Ordos block and Sichuan basin. | Yongcai Tang Yongshun John Chen Yuanyuan V. Fu Haiyang Wang Shiyong Zhou Eric Sandvol Jieyuan Ning Yongge Feng Mian Liu | 2010 | Earthquake Science2010，23，6： | 2 |
| 6 | Efficacy of fungi for control of Russian wheat aphid (Homoptera:Aphidi- dae) in irrigated wheat 显示文摘 | Vandenberg J D Sandvol L E Jaronski S T | 2001 | The Southwestern Entomologist2001，26，： | 1 |
| 7 | Evidence form earthquake data for a partially molten crustal layer in southern Tibet 显示文摘 | Kind R Ni J Zhao W Wu J Yuan X Zhao L Sandvol E Reese C Nabelek J Hearn T | 1996 | Science1996，274，： | 1 |
| 8 | Seismic anisotropy beneath the southern Himalayas-Tibet collision zone 显示文摘 | SANDVOL E NI J KIND R | 1997 | J Geophs Res1997，102，17： | 1 |
| 9 | Shear-wave splitting in the Rio Grande rift 显示文摘 | Sandvol E Ni J Ozalaybey S | 1992 | Geophysical research Letters1992，19，： | 1 |
| 10 | Dynamic vehicle routing based on online traffic information显示文摘 | Fleischmann B Gnutzmann S Sandvol E | 2004 | Transportation Science2004，38，4： | 1 |
| 11 | Seismic anisotropy beneath the southern Himalayas-Tibet collision zone 显示文摘 | Sandvol E Ni J F Kind R | 1997 | Journal of Geophysical Research1997，102，17： | 1 |
| 12 | Rayleigh wave tomographyof the northeastern margin of the Tibetan Plateau显示文摘 | Zhang Q Sandvol E Ni J | 2011 | Earthand Planetary Science Letters2011，304，12： | 1 |
| 13 | Seismic anisotropy beneath the southern Himalayas-Tibet collision zone显示文摘 | Sandvol E Ni J Kind R | 1997 | Journal of Geophysical Research1997，102，17： | 1 |
| 14 | Lithospheric and upper mantle structure of southern Tibet form a seismological passive source experiment 显示文摘 | Yuan X Ni J Kind R Mechie J Sandvol E | 1997 | Journal of Geophysical Research1997，102，27： | 1 |
| 15 | Azimuthal anisotropy beneath the southern Himalayas-Tibet collision zone显示文摘 | Sandvol E Ni J Kind R | 1997 | Journ Geophys Res1997，102，17： | 1 |
| 16 | RayleighwavetomographyofthenortheasternmarginoftheTibetanPlateau显示文摘 | ZhangQ SandvolE NiJ etal | 2011 | EarthandPlanetaryScienceLetters2011，304，： | 1 |
| 17 | 大陆俯冲板片的持续断离正在终结喜马拉雅造山作用显示文摘俯冲的大陆岩石圈在大陆碰撞后仍然对地表板块施加拖拽作用,使造山作用得以维持.但是大陆碰撞作用最终为何减弱乃至停止,目前存在多种解释.本文利用覆盖青藏高原的流动地震观测数据,进行地震层析成像研究,在地慢过渡带中识别出多个高地震波速度异常,认为它们是俯冲印度大陆岩石圈断离形成的碎片.俯冲板片会不断沿大陆岩石圈内部的先存薄弱带断离,该过程将持续减小俯冲岩石圈的板片拖曳力,进而导致中新世印度-欧亚板块汇聚速率降低.据此推断,俯冲大陆板片持续断离将导致印欧大陆碰撞和喜马拉雅造山作用最终结束. | 梁晓峰 褚杨 万博 陈凌 陈林 Eric Sandvol Stephen P.Grand 李仪兵 王敏玲 田小波 陈赟 徐涛 李杨 纪伟强 | 2023 | Science Bulletin2023，68，23： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员