A5101564293- earthquake and tectonic studies
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Analysis
- Grouting, Rheology, and Soil Mechanics
- Geological and Geochemical Analysis
- Geotechnical Engineering and Soil Stabilization
- Geophysics and Gravity Measurements
- Earthquake Detection and Analysis
- High-pressure geophysics and materials
- Geological Studies and Exploration
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Inertial Sensor and Navigation
- Ionosphere and magnetosphere dynamics
- Geology and Paleoclimatology Research
- GNSS positioning and interference
- Geotechnical Engineering and Soil Mechanics
- Groundwater and Watershed Analysis
- Microbial Applications in Construction Materials
- Landslides and related hazards
- Geotechnical and Geomechanical Engineering
- Innovative concrete reinforcement materials
- Concrete and Cement Materials Research
- Seismology and Earthquake Studies
- Tropical and Extratropical Cyclones Research
- Geochemistry and Geologic Mapping
Tianjin University
2017-2025
University of Leeds
2023-2024
Centre for the Observation and Modelling of Earthquakes, Volcanoes and Tectonics
2023-2024
Wuhan University of Technology
2022
Wuhan University
2017-2021
China University of Geosciences
2021
State Key Laboratory of Hydraulic Engineering Simulation and Safety
2017
Beijing Satellite Navigation Center
2017
Abstract The India‐Eurasia collision zone is the largest deforming region on planet; direct measurements of present‐day deformation from Global Positioning System (GPS) have potential to discriminate between competing models continental tectonics. But increasing spatial resolution and accuracy observations only led increasingly complex realizations models. Here we present most complete, accurate, up‐to‐date velocity field for available, comprising 2576 velocities measured during 1991–2015....
Abstract Global positioning system (GPS) data from over 260 ground-based permanent stations in China covering the period 1 March 1999 to 30 April 2015 were used estimate precipitable water (PW) above each site with an accuracy of about 0.75 mm. Four types radiosondes (referred as GZZ2, GTS1, GTS1-1, and GTS1-2) during this period. Instrumentation type changes radiosonde records identified by comparing PW calculated GPS data. Systematic errors different introduced significant biases estimated...
The effectiveness of vacuum preloading is a very important aspect the improvement effect dredger fill. This study experimentally investigated this issue using four different vacuum-preloading methods with physical model test. ultrasoft soil was obtained from Tianjin, China, and samples were prepared in slurry state testing device. subjected to traditional method three modified (multistaged preloading, intermittent ventilation, air injection ventilation), which water discharge amount, rate...
Abstract Constraining the fault slip rate on a can reveal strain accumulation and partitioning pattern. The Aksay segment, eastern segment of Altyn Tagh fault, as starting area where decreases, is zone. spatial temporal distribution its great significance to clarify strain-partitioning pattern fault. In this study, we determined rates at four sites along segment. results demonstrated that decreases dramatically, with an overwhelmingly high gradient ∼9.8 mm/yr/100 km (a 9.8 mm/yr reduction...
Surface and deep potential geophysical signals respond to the spatial redistribution of global mass variations, which may be monitored by geodetic observations. In this study, we analyze dense Global Positioning System (GPS) time series in Eastern Tibetan Plateau using principal component analysis (PCA) wavelet time-frequency spectra. The oscillations interannual residual are clearly identified common mode (CMC) decomposed from GPS 2000 2018. newly developed spherical harmonic coefficients...
The capsule expansion technique (CET) is a novel active measure to control the deformation of subsurface structures induced by underground engineering construction. CET has been applied tunnel control, but its application in pile foundations rarely reported. In this paper, field trial and three-dimensional coupled consolidation finite-element analysis were performed study interaction capsule–soil–pile efficiency CET. Field results verify feasibility controlling horizontal deformation, 60%...
Abstract Fault slip rates estimated from geodetic data are being integrated into seismic hazard models. The standard approach requires modeling velocities and relative (micro‐)plate motions, which is challenging for fault‐based We present a new to directly invert strain solve distributed simultaneously. generate velocity rate fields over the southeastern Tibetan Plateau, utilizing Sentinel‐1 Interferometric Synthetic Aperture Radar spanning 2014–2023. derive using block by inverting rates....
Capsule grouting technology (CGT) is developed to control the deformation of underground structures induced by adjacent construction. Meanwhile, multiple necessary for CGT achieve desired effect as heterogeneity and complexity soil. This study proposed a retarding low-early-strength material (RLGM) realize CGT. Response surface methodology (RSM) was applied effects formulation on workability mechanical strength RLGM, then microstructures optimal RLGM were analyzed X-ray diffraction (XRD)...
Abstract Two remarkable ionospheric irregularities named equatorial plasma bubble (EPB) and medium‐scale traveling disturbance (MSTID) are verified by using multi‐instrumental observations, for example, the ground‐based GPS networks, ionosonde stations, Swarm satellites, when tropical cyclones Tembin Hagibis approached Hong Kong on 26 August 2012 15 June 2014, respectively. The low‐latitude over an area of 105–120 °E in longitude was observed during 12:30–17:00 universal time (UT) 2012....
Abstract Geodetic strain rates from increasing Global Positioning System data provide a promising approach for seismicity forecast. With the rate field presented in Zheng et al. (2017, https://doi.org/10.1002/2017JB014465 ) derived most complete and up‐to‐date set India‐Eurasia collision zone, we forecast shallow of this region, infer that about 11 Mw ≥ 7.5, 36 7.0, 109 6.5, 326 6.0 earthquakes may occur here every 100 years. We indicate be able to help us distinguish between block continuum...
Abstract Contemporary kinematic characteristics of the Pamir plateau are characterized by (a) significant NS‐shortening across northern front, (b) EW‐extension within and (c) gravitationally driven westward mass‐outflux western into Tajik basin. The 2015 Mw 7.2 Sarez 2023 6.8 Murghab strike‐slip earthquakes highlight crucial role shear deformation in Pamir's interior, but detailed secular kinematics remote Plateau still elusive. Here, we employ elastic block models to fit GNSS velocities...
The Qinghai Nanshan fault is a larger in the Northeastern Tibetan Plateau. In previous studies, its movement characteristics are mainly investigated with geological and seismic observations, tectonic transformation role of on east not yet clear. This study uses data fusion to obtain denser GPS observations near fault. Based characteristics, we establish block model investigate slip rate, locking degree, deficit. results show that rate characterized by sinistral convergent movement. Both...
The India-Eurasia collision zone is the largest deforming region on planet with numerous faults and widespread earthquakes, extending from Himalayan Front to north of Tien Shan. Developed plate tectonic theory, block models have long been used describe crustal deformation in zone, GPS data are often invoked constrain test models. Although previous perform well against whole, detailed performance many areas remains uncertain due sparsity low resolution fault database define blocks. In this...
<p>Assessing the distribution of seismic hazard in continents requires an understanding how much deformation is accommodated by major faults. In one view, upper-crustal seismogenic faults respond passively to continuous viscous underlying lithosphere; alternative model that lithospheric-scale control and hazard. We combine InSAR data derived from automatic (COMET-LiCSAR) processing Sentinel-1 (2015-2021) with a compilation velocities GNSS stations produce first high-resolution...