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Evolution Mechanism of slip Zone Under Fluctuation of Ground Water Table of Landslide

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地学前缘 2009年第S1期16卷 55-56页

作者： Bo Chai~1,Kunlong Yin~2 1.School of Environmental Studies,China University of Geosciences(Wuhan),Wuhan 430074,China. 2.Engineering Faculty,China University of Geosciences(Wuhan),Wuhan 430074,China

The fluctuation of ground water table of landslide caused by the changing of rain fall and reservoir water level leads the slip zone to possess the complicated deformation features of stepped and *** role of the groun... 详细信息

关键词： groundwater fluctuation slip zone landslide

slip RATE AND RECURRENCE INTERVAL OF STRONG EARTHQUAKE OF QIANNING—KANGDING SEGMENT ON XIANSHUIHE FAULT

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地学前缘 2000年第S1期7卷 297-298页

作者： Zhou Rongjun, He Yulin, Huang Zhuzhi, Li Xiaogang, Yang Tao(Engineer Earthquake Institute of Seismological Bureau of Sichuan Province, Chengdu 610041,China)

Located on the western of Sichuan, the east border of Tibet plateau, Xianshuihe fault is a significant strong earthquake zone. From Huiyuansi pull\|apart basin in Qianning, Xianshuihe fault can be divided two segments\|NW section and SE section: the construction of the former is single and a main fault; the construction of the latter is complex and composed by three parallel faults, its main fault is named as Selaha—Kangding fault, which distributes along Jinlongsi, Sehala, Mugecuo and Kangding. Yalahe fault, located at the NE direction of the main fault, and Zeduotang fault, located at the SW direction of the main fault, are all secondary faults, which are 9～13km away from the main fault. At the south of Kangding, the segment of Xianshuihe fault is a single main section, called as Moxi fault. On the basis of recent researching results, this paper mainly discusses the slip rate and recurrence interval of strong earthquake of the SE segment (Qianning—Kangding) on Xianshuihe.

关键词： slip rate recurrence interval faulting landform paleoea rthquake seismic tendency

Co-seismic slip distribution of the 2011 Tohoku(MW 9.0)earthquake inverted from GPS and space-borne gravimetric data

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Earth and Planetary Physics 2018年第2期2卷 120-138页

作者： Xin Zhou Gabriele Cambiotti WenKe Sun Roberto Sabadini Key Laboratory of Crustal Dynamics Institute of Crustal DynamicsChina Earthquake AdministrationBeijing 100085China Department of Earth Sciences University of MilanVia Cicognara 7Milano20133Italy Key Laboratory of Computational Geodynamics Chinese Academy of SciencesBeijing 100049China

Data obtained by GRACE(Gravity Recovery and Climate Experiment) have been used to invert for the seismic source parameters of megathrust earthquakes under the assumption of either uniform slip over an entire fault or a point-like seismic ***, we further extend the inversion of GRACE long-wavelength gravity changes to heterogeneous slip distributions during the 2011 Tohoku earthquake using three fault models:(Ⅰ) a constant-strike and constant-dip fault,(Ⅱ) a variable dip fault, and(Ⅲ) a realistically varying strike fault. By removing the post-seismic signal from the time series, and taking the effect of ocean water redistribution into account, we invert for slip models I, II, and III using co-seismic gravity changes measured by GRACE, de-striped by DDK3 decorrelation filter. The total seismic moments of our slip models, with respective values of 4.9×10^(22) Nm, 5.1×10^(22) Nm, and 5.0×10^(22) Nm, are smaller than those obtained by other studies relying on GRACE data. The resulting centroids are also located at greater depths(20 km, 19.8 km,and 17.4 km, respectively). By combining onshore GPS, GPS-Acoustic, and GRACE data, we obtain a jointly inverted slip model with a seismic moment of 4.8×10^(22) Nm, which is larger than the seismic moment obtained using only the GPS displacements. We show that the slip inverted from low degree space-borne gravimetric data, which contains information at the ocean region, is affected by the strike of the arcuate trench. The space-borne gravimetric data help us constrain the source parameters of a megathrust earthquake within the frame of heterogeneous slip models.

关键词： GRACE slip distribution inversion co-seismic gravity changes GPS

Characteristics of InSAR Coseismic Deformation and slip Distribution of the Akto M_S6. 7 Earthquake,Xinjiang

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Earthquake Research in China 2019年第3期33卷 503-513页

作者： QIU Jiangtao ZHAO Qiang LIN Peng The Second Monitoring and Application Center CEA

The Akto MS6. 7 earthquake occurred near the western end of the Muji fault basin in the top of the Pamir syntaxis. The main shock of this earthquake is complicated and the focal mechanism solutions based on the seismic wave inversions are different. Based on the Sentinel-1 SAR data,the coseismal deformation field of the earthquake is obtained by In SAR technique. Based on the elastic half-space dislocation model,the geometrical parameters and the slip distribution model are determined by nonlinear and linear inversion algorithms. The results show that the distributed slip model can well explain the coseismic deformation field. The earthquake includes at least two rupture events,which are located at 7 km(74. 11°E,39. 25°N)and 33 km(74. 49°E,39. 16°N)east from the epicenter according to the CENC. The deformation field caused by the earthquake shows a symmetry distribution,with the maximum LOS deformation of 20 cm. The main seismic slip is concentrated in the 0-20 km depth,and the maximum slip is 0. 84 m. The seismic fault is the Muji fault,and this earthquake indicates that the northeastward push of the Indian plate is enhanced.

关键词： The Akto earthquake InSAR Coseismic slip distribution Muji fault Focal mechanism

INVERSION OF STRIKE-slip MOVEMENTS ALONG THE YARLUNG ZANGBO SUTURE ZONE, TIBET

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地学前缘 2000年第S1期7卷 111-112页

作者： Kobayashi Kenta 1, Matsuoka Atsushi 2, Yang Qun 3, Nagahashi Toru 1, Takei Masahiko 1, Zeng Qinggao 4,Wang Yujin 3 (1 Graduate School of Science and Technology, Niigata University, Niigata 950\|2181, Japan 2 Department of Geology, Niigata Uni

Meso\| and microstructural characteristics of cataclastic fault rocks developed in the Xialu chert are described. The Xialu chert represents pelagic and deep marine sediments (Middle Jurassic—Lower Cretaceous), and occupies the southern marginal part of the E—W trending Yarlung Zangbo suture zone. The apparent total thickness of siliceous deposits exceeds 1km. The current study is concentrated along the two measured sections, Xialu\|E and Xialu\|W. The Xialu\|E section is composed mainly of red chert associated with reddish purple siliceous mudstone and greenish gray mudstone. The beds steeply dip north or south. The 45m section studied is divided into three units (chert unit, chert\|siliceous mudstone unit, and melange unit from north to south). They are in fault contact with each other. In the southern half of the chert unit and the northernmost of the chert\|siliceous mudstone unit, a 15m thick cohesive cataclasite zone can be defined. The cataclasites are composed of chert fragments in a fine grained matrix, and deformed with jigsaw puzzle structures. The chert\|siliceous mudstone unit is made up of four slabs of chert\|siliceous mudstone sequence. Mesoscopic duplex zones in thickness from 1 to 3m are recognized at slab boundaries. Flat and ramp structure and associated P foliations, R1 shears, Y surfaces are developed. Shear spacing range from 1 to 10cm. The slip senses are dextral strike\|slip movement along these duplex zones. The cataclasite zone is cut by the duplex zone along the southern boundary.

关键词： Tibet Yarlung Zangbo Suture Zone Xialu chert structural ana lysis fault rocks strike slip inversion

Revealing the role of pyramidal slip in the high ductility of Mg-Li alloy

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Journal of Magnesium and Alloys 2024年第3期12卷 1021-1025页

作者： Jing Xu Bo Guan Yunchang Xin Guangjie Huang Peidong Wu Qing Liu International Joint Laboratory for Light Alloys College of Materials Science and EngineeringChongqing UniversityChongqing 400030China Key Laboratory for Light-weight Materials Nanjing Tech UniversityNanjing 210009China Department of Mechanical Engineering McMaster UniversityHamiltonON L8S 4L7Canada

The high ductility of Mg-Li alloy has been mainly ascribed to a high activity of pyramidalslip to accommodate plastic *** the present study,however,a quantitative analysis reveals that Li-addition can only slightly stimulate the activation of pyramidalslip under compression along the normal direction of a hot-rolled Mg-4.5 wt.%Li plate,with a relative activity of approximately 18%.Although the limited activity of pyramidalslip alone cannot accommodate a large plastic strain,it effectively reduces the number of{10.11}−{10.12}double twins,which are believed to be favorable sites for crack *** evidently reduced activity of double twins leads to a lower cracking tendency,and therefore improves ductility.

关键词： Mg alloy Plasticity Plastic deformation slip Twinning.

EFFECT OF slip AND MAGNETIC FIELD ON PERISTALTIC FLOW IN AN INCLINED CHANNEL WITH WALL EFFECTS

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International Journal of Biomathematics 2012年第6期5卷 1-17页

作者： A. V. RAMANA KUMARI G. RADHAKRISHNAMACHARYA Department of MathematicsNational Institute of Technology Warangal India

Peristaltic transport of a Newtonian incompressible fluid in the presence of applied mag netic field in an inclined channel with slip is investigated. A perturbation method of solu tion is obtained in terms of wall slope parameter and analytical expressions are derived for average velocity and stream function using Saffman slip condition. The effects of var ious relevant parameters on average velocity and stream line pattern have been studied. It is found that average velocity increases with slip and decreases with permeability and magnetic parameter.

关键词： Peristalsis magnetic field slip inclined channel and wall effects.

slip/PPP 原理分析及其在校园网中的应用

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南京理工大学学报 1997年第6期21卷 526-529页

作者：黄巧曼孙亚民兰少华南京理工大学信息学院

ＳＬＩＰ和ＰＰＰ是Ｉｎｔｅｒｎｅｔ上广泛使用的２种计算机通信协议，该文对这２种协议进行了描述和比较，重点分析了ＰＰＰ的基本原理，包括ＰＰＰ技术特点和运行机制，并结合校园网的建设提出了ＳＬＩＰ和ＰＰＰ在校园网中的应用特... 详细信息

ＳＬＩＰ和ＰＰＰ是Ｉｎｔｅｒｎｅｔ上广泛使用的２种计算机通信协议，该文对这２种协议进行了描述和比较，重点分析了ＰＰＰ的基本原理，包括ＰＰＰ技术特点和运行机制，并结合校园网的建设提出了ＳＬＩＰ和ＰＰＰ在校园网中的应用特点和方法。

关键词：通信链路连接 slip PPP 校园网

slip Suppression of Electric Vehicles Using Sliding Mode Control Method

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Intelligent Control and Automation 2013年第3期4卷 327-334页

作者： Shaobo Li Tohru Kawabe Department of Computer Science University of Tsukuba Tsukuba Japan Faculty of Engineering Information and Systems University of Tsukuba Tsukuba Japan

This paper presents a slip suppression controller using sliding mode control method for electric vehicles which aims to improve the control performance and the energy conservation by controlling the slip ratio of wheel. In this method, a robust sliding mode controller against the model uncertainties is designed to obtain the maximum driving force by suppressing the slip ratio. The numerical simulations for one wheel model under variations in mass of vehicle and road condition are performed and demonstrated to show the effectiveness of the proposed method.

关键词： Sliding Mode Control slip Ratio Electric Vehicles Robustness Energy Conservation