检索结果-南通市图书馆

From active fault segmentation to risks of earthquake hazards and property and life losses—A case study from the Xianshuihe-Xiaojiang fault zone

引用

Science China Earth Sciences 2023年第6期66卷 1345-1364页

作者： Jia CHENG Chong xu Jian MA xiwei xu Pengyu ZHU National Institute of Natural Hazards Ministry of Emergency Management of ChinaBeijing 100085China Key Laboratory of Compound and Chained Natural Hazards Dynamics Ministry of Emergency Management of ChinaBeijing 100085China Institute of Engineering Mechanics China Earthquake AdministrationHarbin 150080China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China

Strong earthquakes generally rupture along active faults,and associated ground motion can cause earthquake disasters,property losses,and casualties from kilometers to tens of kilometers ***,one of the most effective ways to find earthquake’s dangerous parts of faults is to study the seismic hazards on fault *** that,we can also evaluate the probabilities of landslides hazard,property losses,and *** this study,using fault slip rates and magnitude-frequency relationship as constraints,we calculated the earthquake occurrence rates for the segments along the Xianshuihe-Xiaojiang fault *** obtained 11 sites of single-segment or multi-segment rupturing *** also provided these potential events conditional probabilities in the next 30 *** the 11 potential earthquakes,we calculated the property loss of residential buildings in the ground motion *** most significant property loss is CNY 7.65 billion caused by the single-segment rupturing of the F19 segment on the Anninghe *** applied the deep learning neural network method in predicting the number of casualties for the potential earthquakes,showing that the most significant event is the multi-segment rupturing of the F29 and F30 segments on the Anninghe fault with the predicted death number of *** also evaluated the probabilities of earthquake landslides after the potential *** results show that areas with intense compressional tectonic stress are highly unstable and prone to earthquake induced landslides,including the southern section of the Yuke fault,the southern section of the Xianshuihe fault,and the conjugated area between the southern section of the Daliangshan fault and the Lianfeng *** areas have a considerable number of earthquake landslides with probabilities>10%.The methodology and results will give us a new effective way of applying active fault data in earthquake hazard and risk analysis and provide a scientific path for earthqua

关键词： Xianshuihe-Xiaojiang fault Fault segmentation Multi-segment rupture Probabilities of landslide Property losses

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Deep dynamical processes in the central-southern Qinghai-Tibet Plateau—Receiver functions and travel-time residuals analysis of north Hi-Climb

引用

Science China Earth Sciences 2008年第9期51卷 1297-1305页

作者： LI HaiOu xu xiwei JIANG Mei Institute of Geology China Earthquake AdministrationBeijing 100029China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China

Teleseismic receiver functions and travel-time residuals along the north Hi-Climb broadband seismic array in the central-southern Qinghai-Tibet Plateau show that the lithosphere structures in the central and western Qinghai-Tibet Plateau are different. In the central Qinghai-Tibet Plateau, the Indian Plate is northward subducted beneath the Qiangtang block and arrives at the greatest depth beneath the central-southern Qiangtang block. The delaminated Indian lithospheric slab remains beneath the central Lhasa block to a depth possibly greater than that of the upper interface of the mantle transform zone. In the western Qinghai-Tibet Plateau, the Indian lithospheric plate is gently northward subducted and may have arrived to the south of Tarim plate. Due to the resistance from the gently northward subduction of the Indian mantle lithosphere in the western Qinghai-Tibet Plateau, the upwelling mantle material be-neath the Qiangtang block moves mostly toward the east to bring about the lateral eastward flow of the deep mantle hot material in the central Qinghai-Tibet Plateau.

关键词： travel-time residual receiver function lithosphere structure delamination Qiangtang block Bangong-Nujiang Suture

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Preface to the Special Issue on Geo-Disasters

引用

Journal of Earth Science 2021年第5期32卷 1053-1055页

作者： Chong xu xiwei xu Yu Huang National Institute of Natural Hazards Ministry of Emergency Management of ChinaBeijing 100085China Key Laboratory of Compound and Chained Natural Hazards Dynamics(Under Construction) Ministry of Emergency Management of ChinaBeijing 100085China College of Civil Engineering Tongji UniversityShanghai 200092China

Exploring the mechanism of natural disasters and fighting against natural disasters are the eternal themes for human survival and ***-disasters are one kind of natural hazards,including landslides,debris flows,earthquakes,liquefactions,which can result in serious causalities and economic ***,geo-disaster prevention and reduction has been a grand research topic for many decades and a large number of achievements have been made in detection,monitoring,early warning and risk assessment of geo-disasters(Vilímek et al.,2020;Ritchie and Roser,2019;xu et al.,2016;xu,2015;Huang et al.,2014).However,the climate change caused by global warming and effects of human activities,geo-disasters occur from time to time and the risk remains high,which brings new challenges to scientific and technological experts in this field all over the world(xu and xu,2021;McGlade et al.,2019;Xiong and Huang,2019;Keller et al.,2015;Huang and Cheng,2013).

关键词： disaster debris warming

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Detailed Inventory Mapping and Spatial Analyses to Landslides Induced by the 2013 Ms 6.6 Minxian Earthquake of China

引用

Journal of Earth Science 2016年第6期27卷 1016-1026页

作者： Yingying Tian Chong xu xiwei xu Jian Chen Key Laboratory of Active Tectonics and Volcano Institute of GeologyChina Earthquake Administration School of Engineering and Technology China University of Geosciences

On July 22, 2013, an earthquake （Ms 6.6） occurred in Minxian, Gansu Province of China, causing a large number of landslides. Based on high resolution remote sensing images before and after this event, we made the visual interpretation to these coseismic landslides, and prepared a detailed inventory. The inventory registers totally 6 478 landslides in the study area. Of them, 3 322 landslides are larger than 100 m2. Based on 5 m resolution DEM, these landslides were used to perform spatial analyses using landslide number density （LND） and landslide area percentage （LAP）. The results show that the highest LND and LAP values are in the elevation range of 2 300-2 500 m and steeper slopes. Slopes facing E, SE, S and SW directions, slopes with larger absolute curvature values, ridges, scopes of gravel beds of Late Pleistocene （Qp） and the VIII-degree seismic intensity are more prone to sliding with high LND and LAP values. The largest LND and LAP values are in the scopes of 0.08 and 0.24 g, respectively. According to landslide distribution, we infer that F2-2 branch of Lintan-Dangchang fault is the seismogenic fault. With the increasing distances to this branch fault and drainages, LND and LAP values tend to decrease.

关键词： Minxian Earthquake landslide inventory spatial analyses landslide number density (LND) landslide area percentage (LAP).

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Decomposition and Evolution of Intracontinental Strike-Slip Faults in Eastern Tibetan Plateau

引用

Acta Geologica Sinica(English Edition) 2013年第2期87卷 304-317页

作者： YAO Qi xu xiwei XING Huilin xu Chong WANG Xiaohui Key Laboratory of Active Tectonics and Volcano Institute of Geology China Earthquake Administration China Earthquake Networks Center Earth systems Science Computational Centre (ESSCC) The University of Queensland School of Electrical Engineering Beijing Jiaotong University

Little attention had been paid to the intracontinental strike-slip faults of the Tibetan Plateau. Since the discovery of the Longriba fault using re-measured GPS data in 2003, an increasing amount of attention has been paid to this neglected fault. The local relief and transverse swath profile show that the Longriba fault is the boundary line that separates the high and flat tomography of the Tibet plateau from the high and precipitous tomography of Orogen. In addition, GPS data shows that the Longriba fault is the boundary line where the migratory direction of the Bayan Har block changed from eastward to southeastward. The GPS data shows that the Longriba fault is the boundary fault of the sub-blocks of the eastern Bayan Har block. We built three-dimensional models containing the Longriba fault and the middle segment of the Longmenshan fault, across the Bayan Har block and the Sichuan Basin. A nonlinear finite element method was used to simulate the fault behavior and the block deformation of the Eastern Tibetan Plateau. The results show that the low resistivity and low velocity layer acts as a detachment layer, which causes the overlying blocks to move southeastward. The detachment layer also controls the vertical and horizontal deformation of the rigid Bayan Har block and leads to accumulation strain on the edge of the layer where the Longmenshan thrust is located. After a sufficient amount of strain has been accumulated on the Longmenshan fault, a large earthquake occurs, such as the 2008 Wenchuan earthquake. The strike slip activity of the Longriba fault, which is above the low resistivity and low velocity layer, partitions the lateral displacements of the Bayan Har block and adjusts the direction of motion of the Bayan Har block, from the eastward moving Ahba sub-block in the west to southeastward moving Longmenshan sub-block in the east. Four models with different depths to the Longriba fault were constructed：（1） a shallow fault with a depth of only 4 km, （2

关键词： Bayan Har block Longmenshan thrust fault Longriba fault intracontinental fault,nonlinear friction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Validation of Pervasive Cloud Task Migration with Colored Petri Net

引用

Tsinghua Science and Technology 2016年第1期21卷 89-101页

作者： Lianzhang Zhu Shouchao Tan Weishan Zhang Yong Wang xiwei xu Department of Software Engineering China University of Petroleum Software Systems Research Group NICTA

Mobile devices are resource-limited, and task migration has become an important and attractive feature of mobile clouds. To validate task migration, we propose a novel approach to the simulation of task migration in a pervasive cloud environment. Our approach is based on Colored Petri Net（CPN）. In this research, we expanded the semantics of a CPN and created two task migration models with different task migration policies： one that took account of context information and one that did not. We evaluated the two models using CPN-based simulation and analyzed their task migration accessibility, integrity during the migration process, reliability, and the stability of the pervasive cloud system after task migration. The energy consumption and costs of the two models were also investigated. Our results suggest that CPN with context sensing task migration can minimize energy consumption while preserving good overall performance.

关键词： colored Petri net task migration pervasive cloud context information validation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Modelling schemes for multi-party blockchain-based systems to support integrity analysis

引用

Blockchain(Research and Applications) 2021年第2期2卷 111-119页

作者： Sin Kuang Lo Mark Staples xiwei xu Data61 CSIROSydneyAustralia School of Computer Science and Engineering The University of New South WalesSydneyNSW 2052Australia

Multi-party systems are important for business processes but can be *** facilitates trust in multiparty systems by providing transparency,decentralised control,and immutable transaction history,to improve security and accountability between *** use of cryptographic hashes and the continual validation of the shared ledger in a blockchain system provides parties with data integrity for historical transactions and process integrity for smart contract ***,in the design of a broader system combining a blockchain with off-chain components,it is not always clear how system-level integrity is *** paper proposes two modelling schemes to better understand blockchain's support for integrity in multi-party blockchain-based *** schemes model interactions between components in an architecture as security protocols,for analysis by standard techniques and *** first illustrate how blockchain-based systems can be abstractly modelled directly as security *** we show how blockchain-specific issues such as consensus-based‘forking’(also known as‘orphan blocks’or‘uncle blocks’)can be *** allows transaction reordering behaviour to manifest in the model,and allows design mitigation for that problem to be *** illustrate our approach with analyses of three design alternatives for possible enhancements to a multi-party system for sharing trade certificates.

关键词： Blockchain Data integrity Multi-party systems Security protocol Blockchain anomaly

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Discovery of the Longriba Fault Zone in Eastern Bayan Har Block, China and its tectonic implication

引用

Science China Earth Sciences 2008年第9期51卷 1209-1223页

作者： xu xiwei WEN xueZe CHEN GuiHua YU GuiHua Institute of Geology China Earthquake AdministrationBeijing 100029China Earthquake Administration of Sichuan Province Chengdu 610041China

Re-measured GPS data have recently revealed that a broad NE trending dextral shear zone exists in the eastern Bayan Har block about 200 km northwest of the Longmenshan thrust on the eastern margin of the Qinghai-Tibet Plateau. The strain rate along this shear zone may reach up to 4-6 mm/a. Our interpretation of satellite images and field observations indicate that this dextral shear zone corresponds to a newly generated NE trending Longriba fault zone that has been ignored before. The northeast segment of the Longriba fault zone consists of two subparallel N54°±5°E trending branch faults about 30 km apart, and late Quaternary offset landforms are well developed along the strands of these two branch faults. The northern branch fault, the Longriqu fault, has relatively large reverse component, while the southern branch fault, the Maoergai fault, is a pure right-lateral strike slip fault. According to vector synthesizing principle, the average right-lateral strike slip rate along the Longriba fault zone in the late Quaternary is calculated to be 5.4±2.0 mm/a, the vertical slip rate to be 0.7 mm/a, and the rate of crustal shortening to be 0.55 mm/a. The discovery of the Longriba fault zone may provide a new insight into the tectonics and dynamics of the eastern margin of the Qinghai-Tibet Plateau. Taken the Longriba fault zone as a boundary, the Bayan Har block is divided into two sub-blocks: the Ahba sub-block in the west and the Longmenshan sub-block in the east. The shortening and uplifting of the Longmenshan sub-block as a whole reflects that both the Longmenshan thrust and Longriba fault zone are subordinated to a back propagated nappe tectonic system that was formed during the southeastward motion of the Bayan Har block owing to intense resistance of the South China block. This nappe tectonic system has become a boundary tectonic type of an active block supporting crustal deformation along the eastern margin of the Qinghai-Tibet Plateau from late Cenozoic till now

关键词： Qinghai-Tibet Plateau active block newly-generated fault zone slip rate nappe tectonics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Wenchuan earthquake fault and seismic disaster

引用

Earthquake Science 2009年第2期22卷 175-179页

作者： Boming Zhao xiwei xu School of Civil Engineering Beijing Jiaotong University Beijing 100044 China National Center for Active Fault Studies Institute of Geology China Earthquake Administration Beijing 100029 China

Major cases of the Ms8.0 Wenchuan earthquake are obtained through field investigations of the epicenter and high-intensity areas, and the relationships among earthquake faults, ground motion and earthquake disasters near fault zones are analyzed. Both strong deformation and ground rupture lead to significant damages of the buildings, indicating that it is necessary to keep safe distance away from active faults and to take other necessary measures. There are two reasons for that the buildings near the surface rupture zones have withstood in the strong earthquake, other than their seismic resistance capacities, with the first being the site condition, and the second the reduced effective stress and low rupture velocity. The forms of structural damages are complex in the fault areas, with shear failure and tensile and compressive damages. Those structures in urban areas that have used qualified materials and followed the building codes performed well in the earthquake. Survey results also indicate that structures of flexible materials may show better seismic performance.

关键词： Wenchuan earthquake earthquake fault seismic disaster strong ground motion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Late Quaternary Slip-rates and Slip Partitioning on the Southeastern Xianshuihe Fault System, Eastern Tibetan Plateau

引用

Acta Geologica Sinica(English Edition) 2016年第2期90卷 537-554页

作者： CHEN Guihua xu xiwei WEN xueze CHEN Yue-Gau Key Laboratory of Active Tectonics and Volcano Institute of Geology China Earthquake Administration Beijing 100029 China Earthquake Administration of Sichuan Province Chengdu 610041 Sichuan China Department of Geosciences National Taiwan University Taipei 10617 Taiwan China

Quantitative analysis of the kinematics of the active faults distributed around the QinghaiTibetan Plateau is critical to understand current tectonic processes of the plateau. Chronological analysis, based on the comparison among regional climate and geomorphology, digital photogrammetry, offset landforms, and the tectonics were adopted in this study on the Xianshuihe fault in the eastern Tibetan plateau. Two or more offset-age data were obtained for each segment of the Xianshuihe and theYunongxi faults. The offset landforms, including river terrace, alluvial fan and glacial moraine, provide constraints for the late Quaternary slip rate of the Xianshuihe fault. The left-lateral strike slip rate of the Xianshuihe fault decreases from 17 mm/a on the northwest segment to 9.3 mm/a on the southeast segment. Regarding the Xianshuihe fault zone and its adjacent blocks as a regional tectonic system, vector analysis was used to quantitatively analyze the longitudinal kinematical transformation and transversal slip partitioning on the fault zone in terms of the kinematical parameters of the main faults within the zone. The results show that there is a distributed vertical uplift at a rate of 6.1 mm/yr caused by shortening across the Gongga Mountains region. Based on these results, we established a model of the slip partitioning for the southeastern segment of the Xianshuihe fault zone.

关键词： slip partitioning kinematical transformation tectonic morphology Xianshuihe fault Gongga Mountains

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：