A5000986447- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- High-pressure geophysics and materials
- Magnetic Bearings and Levitation Dynamics
- Electric Motor Design and Analysis
- Seismology and Earthquake Studies
- Sensorless Control of Electric Motors
- Geological and Geophysical Studies
- Tribology and Lubrication Engineering
- Microgrid Control and Optimization
- Evaluation Methods in Various Fields
- Electromagnetic Launch and Propulsion Technology
- Piezoelectric Actuators and Control
- Advanced Computational Techniques and Applications
- Earthquake Detection and Analysis
- Landslides and related hazards
- Inertial Sensor and Navigation
- Micro and Nano Robotics
- Hydrocarbon exploration and reservoir analysis
- Geological formations and processes
- Geoscience and Mining Technology
- Seismic Waves and Analysis
- Geological and Geophysical Studies Worldwide
- Characterization and Applications of Magnetic Nanoparticles
China Earthquake Administration
2012-2024
China Aerospace Science and Technology Corporation
2021
Institute of Geology, China Earthquake Administration
2010-2020
Institute of Geology and Geophysics
2014
Zhejiang Sci-Tech University
2006
Late Quaternary rupture behavior of large earthquakes along the Yingxiu-Beichuan fault and Longmen Shan zone has been focus geoscientists since 2008 Wenchuan earthquake. However, most studies have concentrated on southern segment from Yingxiu to Beichuan. Here we opened trenches used borehole drilling in Guixi Pingxi northern (north Beichuan) with following paleoseismic results: (1) Trenches at reveal that least one event occurred prior earthquake ages 770–955 A.D. 665–1030 determined two...
Historical and instrumental records of large earthquakes within the southeastern region Tibetan Plateau appeared to show an irregular complex behaviour in seismic activity over a relatively short-time period. However, whether this kind earthquake can be extrapolated long-time periods is not well addressed. Herein, we present about 8000 yr record using palaeoseismological techniques from Zemuhe fault (ZMHF) assess complexity faulting Plateau. The ZMHF along with Anninghe (ANHF) Xiaojiang...
On January 21, 2016, a strong earthquake with magnitude of Ms6.4 occurred at Menyuan, Qinghai Province China. In almost the same region, there was another happened in 1986, similar and focal mechanism. Based on comprehensive analysis regional active faults, mechanism solutions, precise locations aftershocks, as well GPS crustal deformation, we inferred that Lenglongling fault dips NE rather than SW suggested by previous studies. Considering facts 2016 1986 Menyuan earthquakes are closely...
Abstract The rupture behavior of large‐scale thrust faults has become an increasingly important topic in active tectonic and seismic studies. This is especially true for the 2008 Wenchuan earthquake ( Mw 7.9), which occurred along Longmenshan fault (LMS) China. While this been subject many studies to date, paleoseismic LMS are still lacking. In study, results from trenching at town Bailu, as well radiocarbon Optical‐Stimulated Luminescence dating, used constrain timing penultimate earlier...
Abstract The Qingchuan fault is located along the eastern margin of Tibetan Plateau and connects to Beichuan‐Yingxiu Longmen Shan zone (LMSF), which produced 2008 M W 7.9 Wenchuan earthquake 2013 6.6 Lushan earthquake. After two devastating earthquakes, whether could produce a large or not its tectonic activity highly debated. Based on detailed field investigations paleoseismic trenching combined with multiple radiocarbon dating, we suggest that might show intense (or specific dextral...
Abstract In mainland China, approximately 86% of M≥7 earthquakes have occurred in the block boundary zone, which has been well explained by active theory. However, a few large within block, provides us with an opportunity to better study deformation Tibetan Plateau. The Litang Fault (LTF) is strike-slip fault Sichuan-Yunnan Active Block and produced 1948 M7.3 earthquake. We presented Holocene rupture behavior LTF based on detailed field investigations, paleoearthquake trenching, radiocarbon...
Energy storage technology is one of the key technologies Internet. Benefiting from advantages such as high power density and long life, flywheel energy system (FESS) currently most popular technologies. In systems, speed electrical machine center conversion, which directly affects charging discharging power, well amount stored energy. this paper, a permanent magnet synchronous (HS-PMSM) for magnetic suspended investigated. With three-stage-rotor structure, proposed retains characteristics...
Along with the significant progress of methods for risk assessment geological hazards by using GIS, some related systems based on GIS are developed. However, defects in these still exist: each one can only be used a certain kind hazard evaluation and has sole model; index system spatial database can't updated easily. Therefore, GIS-based multi-model Visual Basic 6.0 secondary development modules MAPGIS was illustrated this paper; moreover had been applied to Project Risk Assessment...
According to historical earthquake records, the Luhuo segment of Xianshuihe fault has produced two large earthquakes: 1816 M7.5 and 1973 M7.6 earthquake. The surface ruptures caused by these events remain well preserved. This study focused on rupture behavior segment. Based field investigations, trench excavations analysis earthquakes, we identified six seismic that occurred within past 3000 years, which are dated at 769 BC, 318–545AD, 677–833AD, 1008–1444 AD, AD AD. recurrence intervals...
Abstract Because the active, left‐slip Haiyuan fault is a first‐order structure along NE margin of Tibetan Plateau, its tectonic evolution provides insight into deformation processes this over time. Late Cenozoic in area eastern initiated as thrust faulting, followed by left‐lateral strike slip displacement. However, time kinematic change has been long debated. Here we use structural and age Ganyanchi basin to date onset transition. Seismic reflection data, integrated with published mapping,...
A high-performance low-loss high-power high-speed motor used in flywheel energy storage system is studied this paper, where the dynamic characteristics of rotor are and comprehensively designed. The influence electromagnetic force damping on has been analyzed. critical speed calculated, modal have by simulation. Finally, steady transient response obtained. Based these analysis results, sheath shaft designed to realize safe stable operation motor.
In this paper, a novel magnetic levitation stage (MLS) is proposed. the MLS, moving plate driven by Lorentz force that acts on Halbach arrays AC windings, and levitated hybrid interaction between DC coils permanent magnets windings arrays. The driving principle of MLS described. dynamic model analyzed constructed. Then, H∞ robust controller designed to realize precision positioning stability due parametric uncertainty external disturbances. Finally, motion control simulated. simulation...
A novel contact-free micromotion stage based on magnetic suspension technique is proposed. In this stage, a moving plate driven by Lorentz force that acts four groups of Halbach arrays AC windings. And the levitated magnetized electromagnets DC coils. Namely designed DC-AC hybrid actuation. This paper deals with analysis actuator basis analytical two-dimensional field solutions and predicts field, thrust flux linkage. The results are validated comparison finite element analysis. dynamic...