Meeting the Sphere Standards: an Analysis of Earthquake Response in China
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The 2008 Wenchuan Earthquake: Risk Management Lessons and Implications Ic Acknowledgements
The 2008 Wenchuan Earthquake: Risk Management Lessons and Implications Ic ACKNOWLEDGEMENTS Authors Emily Paterson Domenico del Re Zifa Wang Editor Shelly Ericksen Graphic Designer Yaping Xie Contributors Joseph Sun, Pacific Gas and Electric Company Navin Peiris Robert Muir-Wood Image Sources Earthquake Engineering Field Investigation Team (EEFIT) Institute of Engineering Mechanics (IEM) Massachusetts Institute of Technology (MIT) National Aeronautics and Space Administration (NASA) National Space Organization (NSO) References Burchfiel, B.C., Chen, Z., Liu, Y. Royden, L.H., “Tectonics of the Longmen Shan and Adjacent Regoins, Central China,” International Geological Review, 37(8), edited by W.G. Ernst, B.J. Skinner, L.A. Taylor (1995). BusinessWeek,”China Quake Batters Energy Industry,” http://www.businessweek.com/globalbiz/content/may2008/ gb20080519_901796.htm, accessed September 2008. Densmore A.L., Ellis, M.A., Li, Y., Zhou, R., Hancock, G.S., and Richardson, N., “Active Tectonics of the Beichuan and Pengguan Faults at the Eastern Margin of the Tibetan Plateau,” Tectonics, 26, TC4005, doi:10.1029/2006TC001987 (2007). Embassy of the People’s Republic of China in the United States of America, “Quake Lakes Under Control, Situation Grim,” http://www.china-embassy.org/eng/gyzg/t458627.htm, accessed September 2008. Energy Bulletin, “China’s Renewable Energy Plans: Shaken, Not Stirred,” http://www.energybulletin.net/node/45778, accessed September 2008. Global Terrorism Analysis, “Energy Implications of the 2008 Sichuan Earthquake,” http://www.jamestown.org/terrorism/news/ article.php?articleid=2374284, accessed September 2008. World Energy Outlook: http://www.worldenergyoutlook.org/, accessed September 2008. World Health Organization, “China, Sichuan Earthquake.” http://www.wpro.who.int/sites/eha/disasters/emergency_reports/ chn_earthquake_latest.htm, accessed September 2008. -
Lessons Learnt from the 512 Wenchuan Earthquake: Perception of Seismic Risks
Australian Earthquake Engineering Society Conference AEES 2008, Ballarat, Victoria. Special Session on 512 Wenchuan Earthquake Lessons Learnt from the 512 Wenchuan Earthquake: Perception of Seismic Risks Hing-Ho Tsang Research Fellow, Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China. Email: [email protected] Abstract On May 12, 2008, a devastating earthquake occurred in Sichuan Province of China depriving tens of thousands of lives and destroying homes of millions of people. In this article, the seismotectonic background and the seismicity of the regions are first introduced. The seismic hazard levels specified in the Chinese Code for Seismic Design of Buildings, GB 50011 – 2001, and issues concerning the perception of earthquake risks and the extensive damage to buildings in the affected regions are discussed. Keywords: Wenchuan Earthquake, Sichuan, China, seismic, hazard, risk, intensity 1. BRIEF BACKGROUND OF THE 512 WENCHUAN EARTHQUAKE At 06:28:01.42 UTC on May 12, 2008, a devastating earthquake occurred at the Wenchuan County in the Sichuan Province of China. On the moment magnitude scale, the earthquake was of Mw = 7.9 according to reports from the United States Geological Survey (USGS). On the surface wave magnitude scale, the earthquake was of Ms = 8.0 according to reports from the China Earthquake Administration (CEA). The epicentre of the earthquake was 80 km west-northwest of the provincial capital city of Chengdu (refer Figure 1(a)). The fault ruptured at a depth of about 19 km. There were over 200 aftershocks with magnitudes greater than 4.0 and 8 aftershocks with magnitude greater than 6.0 occurred in the area afterwards. -
Characteristics of Foreshocks and Short Term Deformation in the Source Area of Major Earthquakes
Characteristics of Foreshocks and Short Term Deformation in the Source Area of Major Earthquakes Peter Molnar Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge, Massachusetts 02139 USGS CONTRACT NO. 14-08-0001-17759 Supported by the EARTHQUAKE HAZARDS REDUCTION PROGRAM OPEN-FILE NO.81-287 U.S. Geological Survey OPEN FILE REPORT This report was prepared under contract to the U.S. Geological Survey and has not been reviewed for conformity with USGS editorial standards and stratigraphic nomenclature. Opinions and conclusions expressed herein do not necessarily represent those of the USGS. Any use of trade names is for descriptive purposes only and does not imply endorsement by the USGS. Appendix A A Study of the Haicheng Foreshock Sequence By Lucile Jones, Wang Biquan and Xu Shaoxie (English Translation of a Paper Published in Di Zhen Xue Bao (Journal of Seismology), 1980.) Abstract We have examined the locations and radiation patterns of the foreshocks to the 4 February 1978 Haicheng earthquake. Using four stations, the foreshocks were located relative to a master event. They occurred very close together, no more than 6 kilo meters apart. Nevertheless, there appear to have been too clusters of foreshock activity. The majority of events seem to have occurred in a cluster to the east of the master event along a NNE-SSW trend. Moreover, all eight foreshocks that we could locate and with a magnitude greater than 3.0 occurred in this group. The're also "appears to be a second cluster of foresfiocks located to the northwest of the first. Thus it seems possible that the majority of foreshocks did not occur on the rupture plane of the mainshock, which trends WNW, but on another plane nearly perpendicualr to the mainshock. -
Distribution Pattern of Landslides Triggered by the 2014
International Journal of Geo-Information Article Distribution Pattern of Landslides Triggered by the 2014 Ludian Earthquake of China: Implications for Regional Threshold Topography and the Seismogenic Fault Identification Suhua Zhou 1,2, Guangqi Chen 1 and Ligang Fang 2,* 1 Department of Civil and Structural Engineering, Kyushu University, Fukuoka 819-0395, Japan; [email protected] (S.Z.); [email protected] (G.C.) 2 Department of Geotechnical Engineering, Central South University, Changsha 410075, China * Correspondance: [email protected]; Tel.: +86-731-8253-9756 Academic Editor: Wolfgang Kainz Received: 16 February 2016; Accepted: 11 March 2016; Published: 30 March 2016 Abstract: The 3 August 2014 Ludian earthquake with a moment magnitude scale (Mw) of 6.1 induced widespread landslides in the Ludian County and its vicinity. This paper presents a preliminary analysis of the distribution patterns and characteristics of these co-seismic landslides. In total, 1826 landslides with a total area of 19.12 km2 triggered by the 3 August 2014 Ludian earthquake were visually interpreted using high-resolution aerial photos and Landsat-8 images. The sizes of the landslides were, in general, much smaller than those triggered by the 2008 Wenchuan earthquake. The main types of landslides were rock falls and shallow, disrupted landslides from steep slopes. These landslides were unevenly distributed within the study area and concentrated within an elliptical area with a 25-km NW–SE striking long axis and a 15-km NW–SE striking short axis. Three indexes including landslides number (LN), landslide area ratio (LAR), and landslide density (LD) were employed to analyze the relation between the landslide distribution and several factors, including lithology, elevation, slope, aspect, distance to epicenter and distance to the active fault. -
Shear-Wave Velocity–Based Probabilistic and Deterministic Assessment of Seismic Soil Liquefaction Potential
Shear-Wave Velocity–Based Probabilistic and Deterministic Assessment of Seismic Soil Liquefaction Potential R. Kayen, M.ASCE ; R. E. S. Moss, M.ASCE ; E. M. Thompson, A.M.ASCE ; R. B. Seed, M.ASCE ; K. O. Cetin, M.ASCE ; A. Der Kiureghian, M.ASCE ; Y. Tanaka ; and K. Tokimatsu, M.ASCE Abstract: Shear-wave velocity (Vs) offers a means to determine the seismic resistance of soil to liquefaction by a fundamental soil property. This paper presents the results of an 11-year international project to gather new Vs site data and develop probabilistic correlations for seismic soil liquefaction occurrence. Toward that objective, shear-wave velocity test sites were identified, and measurements made for 301 new liquefaction field case histories in China, Japan, Taiwan, Greece, and the United States over a decade. The majority of these new case histories reoccupy those previously investigated by penetration testing. These new data are combined with previously published case histories to build a global catalog of 422 case histories of Vs liquefaction performance. Bayesian regression and structural reliability methods facilitate a probabilistic treatment of the Vs catalog for performance-based engineering applications. Where possible, uncertainties of the variables comprising both the seismic demand and the soil capacity were estimated and included in the analysis, resulting in greatly reduced overall model uncertainty relative to previous studies. The presented data set and probabilistic analysis also help resolve the ancillary issues of adjustment for soil fines content and magnitude scaling factors. Introduction correlating more directly with relative density, which has a strong effect on the cyclic behavior of saturated soil (Idriss and fi Of the several eld techniques routinely used to assess triggering of Boulanger 2008). -
An Evaluation of Influential Factors on Landslide Mobility During the 2008
Open Access Nat. Hazards Earth Syst. Sci. Discuss., 2, C1501–C1503, 2014 Natural Hazards www.nat-hazards-earth-syst-sci-discuss.net/2/C1501/2014/ and Earth System © Author(s) 2014. This work is distributed under the Creative Commons Attribute 3.0 License. Sciences Discussions Interactive comment on “An evaluation of influential factors on landslide mobility during the 2008 Wenchuan earthquake” by D. P. Guo et al. D. P. Guo et al. [email protected] Received and published: 14 July 2014 Dear editor and reviewer: Thank you very much for your kind comments on our paper, I will reply your comments one by one, as follows: [1] . .. .I think the topic of the manuscript is very valuable and urgent. In addition, I no- ticed that the topic is not only have few concerns in theWenchuan earthquake, but also other earthquake events (such as the 1999 Chi-chi earthquake, the 2010 Yushu earth- quake, the 2013 Lushan earthquake, 2010 Haiti earthquake etc.). Therefore, I suggest the author to read several more papers of these earthquake events, and supplement the knowledge in the section introduction, which can strengthen the meaningful and C1501 valuable of the manuscript. Reply: added following text in the Line 5 of page 3 of NHESSD version of this paper: From the global viewpoint, there are many publications to research the relationship between earthquake-triggered landslide distribution and its influential factors, such as, Keefer (1984) firstly introduced empirical upper bound lines for the relation between earthquake magnitude and total area affected by landslides, maximum distance from epicenter or from fault rupture zone. -
Active Tectonics and Intracontinental Earthquakes in China: the Kinematics and Geodynamics
The Geological Society of America Special Paper 425 2007 Active tectonics and intracontinental earthquakes in China: The kinematics and geodynamics Mian Liu Youqing Yang Department of Geological Sciences, University of Missouri, Columbia, Missouri 65211, USA Zhengkang Shen State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China Shimin Wang Department of Geological Sciences, University of Missouri, Columbia, Missouri 65211, USA Min Wang Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China Yongge Wan School of Disaster Prevention Techniques, Yanjiao, Beijing 101601, China ABSTRACT China is a country of intense intracontinental seismicity. Most earthquakes in west- ern China occur within the diffuse Indo-Eurasian plate-boundary zone, which extends thousands of kilometers into Asia. Earthquakes in eastern China mainly occur within the North China block, which is part of the Archean Sino-Korean craton that has been thermally rejuvenated since late Mesozoic. Here, we summarize neotectonic and geo- detic results of crustal kinematics and explore their implications for geodynamics and seismicity using numerical modeling. Quaternary fault movements and global position- ing system (GPS) measurements indicate a strong infl uence of the Indo-Asian colli- sion on crustal motion in continental China. Using a spherical three-dimensional (3-D) fi nite-element model, we show that the effects of the collisional plate-boundary force are largely limited to western China, whereas gravitational spreading of the Tibetan Plateau has a broad impact on crustal deformation in much of Asia. The intense seis- micity in the North China block, and the lack of seismicity in the South China block, may be explained primarily by the tectonic boundary conditions that produce high devi- atoric stresses within the North China block but allow the South China block to move coherently as a rigid block. -
Chinese Experience with Post-Natural-Disaster Reconstruction
CHINESE EXPERIENCE WITH POST-NATURAL-DISASTER RECONSTRUCTION Ye Yaoxian* China Architectural Design and Research Group Abstract The paper begins with a discussion of the facts about natural disasters with emphasis on both floods and earthquakes that happened in China, and then shifting the focus from the lessons to be learnt from reconstruction to improvement of reconstruction strategies following a natural disaster. This includes policy development, decision making technology, and evaluation models and etc. The paper concludes with a summary of reconstruction experiences learned from the practices in past decades in China. Post-Natural-Disaster; reconstruction; China INTRODUCTION At the beginning of a millennium, it is appropriate but also necessary to look back upon the events happened in China and to see what lessons and prognoses concerning post-natural-disaster reconstruction can be derived from them for the future. The Government of People’s Republic of China, in response to various natural disasters that occurred in the country after its founding in 1949, particularly the 1976 Tangshan Earthquake which caused 242,000 deaths and the 1991 Anhui and Jiangsu flood which caused 5,000 deaths and 77.9 billion RMB of direct economic losses, noted the importance of significantly improved reconstruction strategies. Reconstruction following a natural disaster is a complicated problem concerning social, economical, cultural, environmental, psychological, and technological aspects. However, for developing countries or regions, it is a good opportunity to change its original economy development model and to push the urban and rural renewal forward. Therefore, improved strategies and reconstruction plans are the key to accelerate the reconstruction process and to improve human settlement environment. -
Earthquake and Poverty with Chinese Characteristics Wenchuan Earthquake Affected Communities Ten Years After the Disaster
UNIVERSITY OF OSLO Earthquake and poverty with Chinese characteristics Wenchuan earthquake affected communities ten years after the disaster Dragana Grulovic Asia and Middle East Studies/Chinese Society and Politics KIN4593 – Master’s Thesis in Chinese Society and Politics (30 credits) Department of Culture Studies and Oriental Languages Spring 2019 Earthquake and poverty with Chinese characteristics Wenchuan earthquake affected communities ten years after the disaster © Dragana Grulovic 2019 Earthquake and poverty with Chinese characteristics - Wenchuan earthquake affected communities ten years after the disaster Dragana Grulovic https://www.duo.uio.no Print: Webergs Print Abstract In May 2008, China was struck by a massive earthquake that killed closed to 70,000 people. Communities were torn to the ground, and the economic losses were enormous. Ten years have passed since the massive forces took place, and communities and lives have been rebuilt, with some preceding their pre-disaster economic levels. This study applies survey data to estimate the poverty rates in the Wenchuan earthquake affected communities ten years after the disaster. I find that in 2018, the poverty incidence was 3% in the overall area, as compared to 9% before the earthquake. Of the total of 198 sampled communities, 27 reported having no government- designated poor people. However, 23 communities have a poverty prevalence of 10% or higher. These communities have few characteristics in common in terms of demographic structure and access to public services. About half of the communities are located in government-designated poor counties, while the rest are not. Altogether, the poverty situation in the Wenchuan earthquake affected area reflects the complexity of poverty in China. -
China National Report on Seismology and Physics of the Earth's Interior
2007-2010 China National Report on Seismology and Physics of the Earth's Interior For The 25th General Assembly of IUGG Melbourne, Australia, 28 June - 7 July 2011 Prepared by China National Committee for International Association of Seismology and Physics of the Earth's Interior (IASPEI) Contents 1. Chen Yuntai, Zhang Yong, Introduction on the recent earthquake source kinematics study in China. 2. Wang Chunyong, et al., Evidence for Mechanically Coupled Lithosphere in central Asia and resulting implications. 3. Chen Yongshun John, Progress in seismotectonic studies at Peking University. 4. Chang Lijun, Wang Chunyong and Ding Zhifeng, Seismic anisotropy of upper mantle in Sichuan and adjacent regions. 5. Fang Lihua, et al., Crustal velocity structures beneath North-China revealed by ambient noise tomography. 6. Chang Lijun, et al., Upper mantle anisotropy beneath the North China from shear-ware splitting measurements. Introduction on the recent earthquake source kinematics study in China Chen Yun-Tai, Zhang Yong Institute of Geophysics, China Earthquake Administration. Beijing 100081, China 1.Methods development Seismologists in china pay much attention to the source kinematics problem, and have developed kinds of techniques to better understand the earthquake source physics in recent 15 years. Chen and Xu (1995) first studied on the rupture process inversion by retrieving and analyzing the ASTF (apparent source time function). Then, Yao and Ji (1997) developed a nonlinear method to investigate the rupture process of moderate-to large earthquakes. Zhou and Chen (2002) designed a linear and nonlinear iteration process to invert the near-field strong motion data for the rupture process. Zhang et al., (2008) summarized and improved several inversion methods and successfully applied them to large earthquakes. -
Pathways to Earthquake Resilience in China
Report Pathways to earthquake resilience in China October 2015 Overseas Development Institute 203 Blackfriars Road London SE1 8NJ Tel. +44 (0) 20 7922 0300 Fax. +44 (0) 20 7922 0399 E-mail: [email protected] www.odi.org www.odi.org/facebook www.odi.org/twitter Readers are encouraged to reproduce material from ODI Reports for their own publications, as long as they are not being sold commercially. As copyright holder, ODI requests due acknowledgement and a copy of the publication. For online use, we ask readers to link to the original resource on the ODI website. The views presented in this paper are those of the author(s) and do not necessarily represent the views of ODI. © Overseas Development Institute 2015. This work is licensed under a Creative Commons Attribution-NonCommercial Licence (CC BY-NC 3.0). ISSN: 2052-7209 Cover photo: Photo by GDS, Children receiving the GDS disaster risk reduction kit, Shaanxi Province, China Contents Acknowledgements 9 About the authors 9 Glossary of terms 11 Acronyms 11 1. Introduction 13 John Young 2. Earthquake disaster risk reduction policies and programmes in China 16 Cui Ke, Timothy Sim and Lena Dominelli 3. Current knowledge on seismic hazards in Shaanxi Province 23 By Feng Xijie, Richard Walker and Philip England 4. Community-based approaches to disaster risk reduction in China 30 Lena Dominelli, Timothy Sim and Cui Ke 5. Case study: World Vision’s community disaster response plan in Ranjia village 42 William Weizhong Chen, Ning Li and Ling Zhang 6. Case study: Gender Development Solution’s disaster risk reduction in primary education 46 Zhao Bin 7. -
The MW 6.9 14 April 2010 Yushu Earthquake and a 10,000-Year Record of Paleoseismicity Along the Guoqiong Segment of the Yushu Fault, Qinghai Province, China
ACTA GEOLOGICA SINICA (English Edition) Vol. 87 Supp. http://www.geojournals.cn/dzxben/ch/index.aspx http://mc.manuscriptcentral.com/ags June 2013 Taylor F. ARMSTRONG, Mervin J. BARTHOLOMEW, FENG Lian, LI Dewei, LIU Demin, Tammy RITTENOUR, and SUN Guoqiang , 2013. The MW 6.9 14 April 2010 Yushu Earthquake and a 10,000-Year Record of Paleoseismicity along the Guoqiong Segment of the Yushu Fault, Qinghai Province, China. Acta Geologica Sinica (English Edition), 87(supp.): 329-330. The MW 6.9 14 April 2010 Yushu Earthquake and a 10,000-Year Record of Paleoseismicity along the Guoqiong Segment of the Yushu Fault, Qinghai Province, China Taylor F. ARMSTRONG 1*, Mervin J. BARTHOLOMEW1, FENG Lian1, LI Dewei2, LIU Demin2, Tammy RITTENOUR3, and SUN Guoqiang2 1 Department of Earth Sciences, University of Memphis, Memphis, TN, USA 2 Faculty of Earth Sciences and Earthquake Research Center, China University of Geosciences, Wuhan, China 3 Department of Geology, Utah State University, Logan, UT, USA The Mw6.9 April 14, 2010 Yushu earthquake occurred trench, three buried A-soil horizons were preserved along in the central region of the Tibetan Plateau, within the the downthrown side of the fault. Line-length balancing Banyan Har Mountain Range along the Ganzi-Yushu fault and progressive retro-deformation for the 2010 event and system. The focal mechanism for the main shock indicated three previous surface ruptures indicate ~2m of horizontal left-lateral, strike-slip movement along a WNW-ESE- shortening perpendicular to the fault and ~1.2m of vertical striking, near-vertical fault. Near the village of Guoqiong displacement.