The devastating 2008 Wenchuan earthquake marks a defining moment for China's earthquake science program.
The focus of a special November issue of the prestigious Bulletin of the Seismological Society of America (BSSA), the M 7.9 earthquake has garnered intense interest among seismologists, allowing the Chinese science community to demonstrate its capability to a global audience.
The earthquake produced an enormous disaster, killing more than 80,000 people and leaving more than four million people homeless. Destruction was widespread, though recent new building codes in Wenchuan mitigated the damage.
The May 12, 2008 Wenchuan earthquake ruptured the Longmenshan margin of the eastern Tibetan Plateau, producing a 240-km-long surface rupture along the pre-existing Beichuan-Yingxiu fault and an additional 72-km-long surface rupture along the Guanxian-Jiangyou fault. The size and extent of the earthquake surprised many since the region was not considered a location with a high seismic hazard risk. Published in this special issue, research by Liu, et al., constrains the most recent comparable major earthquake at 1000 to 2000 years ago.
The special issue features 34 papers that primarily focus on strong-motion studies and surface-rupture studies. Other papers focus on aspects that relate to the earthquake, from structural geology to engineering aspects, including:
Research by Deng, et al., suggests that the filling of the nearby Zipingpu reservoir did not trigger the Wenchuan earthquake, whose hypcenter depth was between 14 km and 19 km (8.5 to 11.5 miles). The authors determined that filling the reservoir could only result in an increase in the rate of shallow earthquakes with a hypocenter depth less than 5 km (3 miles) in the nearby region.
Zhou, et al., document a setback, or no-build zone, for the post-Wenchuan quake reconstruction. In large earthquakes, severe damage to man-made structures constructed directly on surface rupture zones cannot be avoided even with the utilization of modern technology and engineering measures. The no-build zone delineates an area around an active fault to allow an appropriate level of safety.
Earthquake prediction in China is a government-sanctioned and law-regulated activity, deeply rooted in the country's history. Authors Chen and Wang describe earthquake prediction in China in three stages: an enthusiastic explosion of earthquake prediction study during the Cultural Revolution (1966-1976), diminishing confidence since the Tangshan earthquake in 1976 and a definitive move toward policies to mitigate damage in the post-Wenchuan earthquake era. The most important lesson from this earthquake, write the authors, is growing acceptance among China's policymakers that it is presently impractical to rely on prediction to prevent earthquake disasters.
The Seismological Society of America (SSA) is an international scientific society devoted to the advancement of seismology and its applications in understanding and mitigating earthquake hazards and in imaging the structure of the Earth. Its journal, BSSA, is the premier journal of advanced research in earthquake seismology and related disciplines.
Nan Broadbent | EurekAlert!
Novel method for investigating pore geometry in rocks
18.06.2018 | Kyushu University, I2CNER
Decades of satellite monitoring reveal Antarctic ice loss
14.06.2018 | University of Maryland
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
19.06.2018 | Physics and Astronomy
19.06.2018 | Life Sciences
19.06.2018 | Physics and Astronomy