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Science China Earth Sciences 2004年第3期47卷 193-200页

作者： L5 Qingtian1, HOU Zengqian1, ZHAO Jinhua1, SHI Danian1, WU Xuanzhi1, CHANG Yinfo1, PEI Rongfu1,HUANG Dongding2 & KUANG Chaoyang2 1. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China 2. The Sixth Geophysical Exploration brigade, Petroleum Bureau of East China, Nanjing 210009, China Chinese Acad Geol Sci Inst Mineral Resources Beijing 100037 Peoples R China Petr Bur E China Geophys Explorat Brigade 6 Nanjing 210009 Peoples R China

The deep seismic profiling across the Tongling ore district reveals a complex crustal structure. Strong contrasting dipping layered reflections (4—11 s, TWT),which dominate the lower crust of the northern part of the profile, are interpreted as the underplating of the basalt related to extensional tectonism. In the south of the profile, the Yangtze craton is characterized by strong reflections in the middle crust, showing a distinct two-layer crustal structure. Over the region of the Tongling uplift, there appear the complex arc shape reflections, suggesting folded, faulted and intruded structures, and the transparent zone below them reveals the existence of batholith. The south dipping strong reflections between the upper crust and lower crust (4—7 s, TWT) suggest a detachment between them. The detachment provided space for the magma intrusion, and caused the formation of the batholith. The Yangtze craton has a clear Moho re-flection, while the Tongling uplift has a weak Moho, whereas below the reflective lower crust in the northern part of the profile, there are sub-Moho reflections. The abrupt variation of the Moho characteristics within a short distance indicates the complexity of magmatic activity.

关键词： metallogenic belt, ore district, deep seismic profiling, crustal structure.

CRUSTAL STRUCTURE OF THE SOUTH CHINA SEA BASIN

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Science in China,Ser.B 1983年第6期26卷 648-661页

作者：姚伯初王光宇 NO.2 Marine Geological Investigation brigade Ministry of Geology and Mineral Resources Guangzhou

Based on the results from prospcction of seismic sonobuoy and two-ship refraction measurement, structural characteristics for earth crust of South China Sea Basin are analyzed: very thick crustal Layer 1, normal crustal Layer 2 and abnormally thin crustal Layer 3 are observed, with Layer 3 increasing continuously in thickness towards NS direction from the centre of the basin, and the earth crust becoming thick accordingly. These structural characteristics are in conformity with Cenozoic sea spreading mode inferred from magnetic anomaly. Finally, possible causes that account for these characteristics are discussed.

关键词： CRUSTAL STRUCTURE OF THE SOUTH CHINA SEA BASIN SEA

A Reconstruction for the Late Paleozoic Tectonic Evolution of the Tekes Daban Area,Western Tianshan Mountains:Evidence from Unconformities

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Acta Geologica Sinica(English Edition) 2011年第5期85卷 1127-1133+1135-1136+1134页

作者： LI Yongjun~(1,*),YANG Gaoxue~1,WANG Xiaogang~2,ZHANG Tianji~1,LIU Xiaoyu~1, YANG Mingyi~1 and TONG Liming~2 1 School of Earth Sciences and Resources Management,Chang’an University,Xi’an 710054,China 2 No.9 Geological brigade,Xinjiang Bureau of Geology and Mineral Exploration and Development,(U|¨)rmqi 830000,China School of Earth Sciences and Resources Management Chang'an University Xi'an 710054 China No. 9 Geological brigade Xinjiang Bureau of Geology and Mineral Exploration and Development ürümqi 830000 China *Correspondence: Yongjun LI *Correspondence: Corresponding author. E-mail: yongjunl@***

The identification of unconformities is the key to reconstructing tectonic evolution,revealing crust movement and establishing tectonic *** a long time,there were some controversial issues on the episodes of Variscan cycle(especially on the period of Carboniferous-Permian stages) of the Tianshan *** essential questions fall on the numbers and property of unconformities in this area, for example,in the western Tianshan *** research only recognized three or four fold *** regional geological mapping of 1:50000 in the Tekes Daban area,western Tianshan have allowed us to characterize the seven unconformities within the Carboniferous-Permian strata and understand its implications for tectonic reconstruction of the Tianshan *** angular unconformities,which indicate that seven tectonic episodes occurred in the Late Paleozoic Period,were identified in this ***,the newly discovered unconformities based on the angle-unconformity between the Dongtujinhe and Keguqinshan Formations,and angle-unconformity between the Wulansayi and Wulang Formations,respectively indicates the Tekes episode and Gongliu *** unconformity between the Dongtujinhe and Yishijilike Formations is angle-unconformity instead of parallel unconformity indentified by previous research,so the former Bogda ascending can be revised as Bogda ***,these newly identified seven episodes,including the Tekes episode,suggest that there are seven tectonic movements in the Tianshan area at *** has significant implications for reconstruction of the Late Paleozoic tectonics in the Tianshan Area,NW China.

关键词： unconformity episode Late Paleozoic Western Tianshan Mountains

基于凸组合的同步长最大均方权值偏差自适应滤波算法

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通信学报 2012年第3期33卷 28-34页

作者：芮国胜苗俊张洋王林海军航空工程学院电子信息工程系山东烟台264001 海军航空工程学院研究生管理大队山东烟台264001

针对NLMS和PNLMS滤波器对时变信道跟踪能力差的缺点,提出了一种同步长凸组合最大均方权值偏差(MSD,mean square deviation)算法。该算法将同步长的NLMS和PNLMS 2种不同类型的自适应滤波器进行凸组合,以最大均方权值偏差为准则,使新的滤... 详细信息

针对NLMS和PNLMS滤波器对时变信道跟踪能力差的缺点,提出了一种同步长凸组合最大均方权值偏差(MSD,mean square deviation)算法。该算法将同步长的NLMS和PNLMS 2种不同类型的自适应滤波器进行凸组合,以最大均方权值偏差为准则,使新的滤波器能够在外界信道特性(稀疏、非稀疏和模糊态)时变的情况下,保持良好的随动性能,并在收敛的各个阶段均保持快速且稳定的均方特性。理论推导和仿真实验表明:该算法与NLMS、PNLMS和IPNLMS算法相比,在稀疏和非稀疏状态时能够保持四者中最快的收敛速度,并且在模糊状态时算法性能优于其余三者。另外,该算法仍保持较好的稳态均方性能。

关键词：自适应滤波器凸组合系数比例自适应算法最大均方权值偏差

基于粗糙集的范例推理在泥石流危险性评价中的应用

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山地学报 2008年第2期26卷 223-229页

作者：刘勇健刘义建广东工业大学岩土工程研究所湖南省地质矿产勘查开发局407队广东广州510006 湖南怀化418000

将粗糙集理论和范例推理相结合,建立了基于粗糙集-范例推理的泥石流危险性评价模型。运用粗糙集理论对范例库中的范例进行属性约简和特征向量权值计算,用相似度量理论来实现最相似范例检索,得到泥石流的危险性评价结果。选取了一次泥石... 详细信息

将粗糙集理论和范例推理相结合,建立了基于粗糙集-范例推理的泥石流危险性评价模型。运用粗糙集理论对范例库中的范例进行属性约简和特征向量权值计算,用相似度量理论来实现最相似范例检索,得到泥石流的危险性评价结果。选取了一次泥石流(可能)最大冲出量,泥石流发生频率、流域面积、主沟长度、流域相对高差、流域切割密度、24h最大降雨量、松散固体物质储量共8个因素作为泥石流危险性的影响因子;选取云南东川和西藏八宿等共14条泥石流沟资料进行建模分析。实例研究表明,基于粗糙集-范例推理的泥石流危险性评价结果与实际状态相吻合,该方法具有简便、高效、直观、实用的特点。

关键词：泥石流危险性评价粗糙集范例推理相似度量

The Recent Crustal Deformation on the Sichuan-Yunnan Rhombic Block Boundaries

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Earthquake Research in China 2002年第4期16卷 304-314页

作者： Lü Yipei 1), Liao Hua 2), Su Qin 2) and Wang Lan 2) 1)Seismological Bureau of Sichuan Province, Chengdu 610041, China 2)Geodetic brigade of Seismological Bureau of Sichuan Province, Ya’an 625000, China Seismological Bureau of Sichuan Province Chengdu 610041 China Geodetic brigade of Seismological Bureau of Sichuan Province Ya'an 625000 China

Based on data from an across-fault survey along the Sichuan-Yunnan rhombic block boundaries, the recent deformation characteristics on each fault have been analyzed. It was found that the rate of crustal deformation is slowing down along the northern segment and increasing along the southern segment. Each fault has different features of deformation. The horizontal deformation is mainly characterized by left-lateral strike-slip. The rate of vertical deformation is less than that of the horizontal deformation. The faults have the feature of upper wall uplifting alternated with descending. The anomaly changes of crustal deformation at some sites are closely related to the seismicities near the sites.

关键词： The Sichuan-Yunnan rhombic block Crustal deformation Earthquake Across-fault survey

THE ISOSTATIC DATUM FOR STUDYING OF THE SEA LEVEL CHANGES ALONG THE COAST OF CHINA

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地震地质 1991年第1期 8-14页

作者： Huang Li-ren, Yang Guo-hua and Hu Hui-min(Geodetic brigade, S. S. B. Tianjin 300180)

Relative sea level change can be derived from tide records. In order to study the general sea level change along the coast of China, it is necessary to make a unified reduction for all the results obtained from various tide stations. A so-called isostatic datum of vertical movement of thecoastal land hasbeen suggested as a basis of the unified reduction in this paper, established by useof precise releveling data completed between 50’s and 80’*** vertical movement velocities relative to the datum at the bench marks of 15 tide stations have been calculated. These velocities provide a base for the reduction.

关键词： sea level change Isostatic datum Leveling

TACHAI FIELD——ITS RECONSTRUCTION AND ITS FERTILITY CHARACTERISTICS

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Science China Mathematics 1976年第1期 7-20页

作者： The Scientific Research Group of the Tachai Production brigade 大寨大队科研小组

The high-and-stable yielding Tachai field is the fruit of diligent labour by the poorand lower-middle peasants of Tachai who have persevered in continuing the revolution under the dictatorship of the proletariat and maintained the revolutionary spirit of self-rellance and hard struggle in transforming heaven and *** paper refers to the three developmental stages in the reconstruction of Tachai field: 1) building up the level terrace and the fields out of gullies to turn the "threeloss field" into "three-conservation field"; 2) taking a series of measures such as increasing the application of organic fertilizers, deep ploughing-sowing-hoeing, improvement by allochthonous soil, etc., to further change the "three-conservation field" into "sponge field"; 3) removing mountains and filling in gullies to build "man-made plains" to provide conditions for the purpose of achieving agricultural mechanization, bringing all farmland under irrigation and making the fields garden-like to suit the needs of the s

关键词： TACHAI FIELD high than

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珠江口外第四纪沉积相的初步划分

石油与天然气地质 1992年第4期13卷 371-380页

作者：寇养琦地矿部广州海洋局第二海洋地质调查大队 510760

珠江口外第四纪的沉积相,是在高分辨率浅层地震相解释的基础上初步划分的。它包括了河流冲积相、三角洲相、浅海相、潮汐-河口湾相等四个主要的骨架沉积相,一个典型的海底沙丘沙波沉积。沉积相的类型、发展演变和空间分布与区域海平面... 详细信息

珠江口外第四纪的沉积相,是在高分辨率浅层地震相解释的基础上初步划分的。它包括了河流冲积相、三角洲相、浅海相、潮汐-河口湾相等四个主要的骨架沉积相,一个典型的海底沙丘沙波沉积。沉积相的类型、发展演变和空间分布与区域海平面升降密切相关。

关键词：珠江口外沉积相地震