A5067240599- earthquake and tectonic studies
- Earthquake Detection and Analysis
- Seismology and Earthquake Studies
- Synthetic Aperture Radar (SAR) Applications and Techniques
- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- Landslides and related hazards
- GNSS positioning and interference
- Geophysics and Gravity Measurements
- Seismic Waves and Analysis
- Geological and Geophysical Studies
- Cryospheric studies and observations
- Methane Hydrates and Related Phenomena
- Geophysical Methods and Applications
- Geological and Geophysical Studies Worldwide
- Geological and Tectonic Studies in Latin America
- Seismic Imaging and Inversion Techniques
- Rock Mechanics and Modeling
- Remote Sensing and LiDAR Applications
- Innovative Educational Techniques
- IoT and Edge/Fog Computing
- Geophysics and Sensor Technology
- Ocean Waves and Remote Sensing
- Arctic and Antarctic ice dynamics
- Maritime Navigation and Safety
China Earthquake Administration
2022-2024
Intel (United States)
2022
Scripps Institution of Oceanography
2010-2018
University of Washington
2014-2018
Earth and Space Research
2016-2018
University of California, San Diego
2010-2015
Zhejiang Wanli University
2015
China People's Police University
2012
Over the past 15 years, software for processing interferometric synthetic aperture radar (InSAR) data into maps of surface deformation has been developed and refined. The InSAR technique is commonly used to investigate associated with earthquakes, volcanoes, withdrawal crustal fluids, coherent ice motions [ Massonnet Feigl , 1998]. software, called Generic Mapping Tools Synthetic Aperture Radar (GMTSAR), an open‐source (GNU General Public License) system designed users familiar (GMT) [Wessel...
We compared four interseismic velocity models of the San Andreas Fault based on GPS observations. The standard deviations predicted secular from are larger north Francisco Bay area, near creeping segment in Central California, and along Jacinto East California Shear Zone Southern California. A coherence spectrum analysis fields indicates relatively high correlation among at longer wavelengths (>15–40 km), with lower shorter wavelengths. To improve short‐wavelength accuracy model, we...
We derived a coseismic slip model for the M w 7.9 2008 Wenchuan earthquake on basis of radar line‐of‐sight displacements from ALOS interferograms, GPS vectors, and geological field data. Available interferometric synthetic aperture (InSAR) data provided nearly complete coverage surface deformation along both ascending (fine beam mode) descending orbits (ScanSAR to ScanSAR mode). The was modeled using four subfaults with variable geometry dip capture simultaneous rupture Beichuan fault...
Abstract The 27 February 2010, M w 8.8 Maule earthquake ruptured ~500 km along the plate boundary offshore central Chile between 34°S and 38.5°S. Establishing whether coseismic fault offset extended to trench is important for interpreting both shallow frictional behavior potential tsunami earthquakes in region. Joint inversion of high‐rate GPS, teleseismic body waves, interferometric synthetic aperture radar (InSAR), campaign observations yields a kinematic rupture model with improved...
Radar interferometry from the ALOS satellite captured coseismic ground deformation associated with 2010 Mw 8.8 Maule, Chile earthquake. The interferograms reveal a sharp transition in fringe pattern at ∼150 km trench axis that is diagnostic of downdip rupture limit Maule An elastic dislocation model based on ascending and descending 13 near‐field 3‐component GPS measurements reveals slip decreases more or less linearly maximum 17 m (along‐strike average 6.5 m) 18 depth to near zero 43–48...
Geodetic slip inversions for three major (Mw > 7) strike-slip earthquakes (1992 Landers, 1999 Hector Mine and 2010 El Mayor–Cucapah) show a 15–60 per cent reduction in near the surface (depth < 2 km) relative to at deeper depths (4–6 km). This significant difference between coseismic depth has been termed shallow deficit (SSD). The large magnitude of this an enigma since it cannot be explained by creep during interseismic period or triggered from nearby earthquakes. One potential explanation...
Abstract We present high‐resolution measurements of interseismic deformation along the central section North Anatolian Fault (NAF) in Turkey using interferometric synthetic aperture radar data from Advanced Land Observing Satellite and Envisat missions. generated maps satellite line‐of‐sight velocity five ascending tracks one descending track covering NAF between 31.2°E 34.3°E. The reveals discontinuities up to ∼5 mm/yr across Ismetpasa segment NAF, implying surface creep at a rate ∼9 mm/yr;...
The Cerro Prieto geothermal field (CPGF) lies at the step-over between imperial and faults in northern Baja California, Mexico. While tectonically this is most active section of southern San Andreas Fault system, spatial temporal deformation area poorly resolved by sparse global positioning system (GPS) network coverage. Moreover, interferograms from satellite observations spanning more than a few months are decorrelated due to extensive agricultural activity region. Here we investigate use...
Static offsets produced by the February 27, 2010 M w = 8.8 Maule, Chile earthquake as measured GPS and InSAR constrain coseismic slip along a section of Andean megathrust dimensions 650 km (in length) × 180 width). data have been collected from both campaign continuous sites sampling near‐field far field. ALOS/PALSAR several ascending descending tracks crustal deformation. Inversions geodetic for distributed on reveal pronounced maximum order 15 m at ∼15–25 depth offshore Lloca, indicating...
Abstract Previous inversions for slip rate along the San Andreas Fault System (SAFS), based on elastic half‐space models, show a discrepancy between geologic and geodetic rates few major fault segments. In this study, we use an earthquake cycle model representing plate over viscoelastic to demonstrate that there is no significant long‐term rates. The California statewide includes 41 segments having steady from base of locked zone episodic shallow known historical ruptures recurrence...
Abstract [1] The great 27 February 2010 Mw 8.8 earthquake off the coast of southern Chile ruptured a ∼600 km length subduction zone. In this paper, we make two independent estimates shear stress in crust region earthquake. First, use coseismic slip model constrained by geodetic observations from interferometric synthetic aperture radar (InSAR) and GPS to derive spatially variable estimate change static along fault. Second, force balance constrain crustal required simultaneously support...
The April 4, 2010 (Mw7.2), El Mayor-Cucapah, Baja California, Mexico, earthquake is the strongest to shake Salton Trough area since 1992 (Mw7.3) Landers earthquake. Similar event, ground-surface fracturing occurred on multiple faults in trough. However, event triggered surface slip more central than previous earthquakes, including Yuha Desert area, southwestern section of Trough. In Trough, along southern San Andreas, Coyote Creek, Superstition Hills, Wienert, Kalin, and Imperial Faults...
Every generation of wireless technologies needs to bring a set new system capabilities enable future applications and services, the sixth mobile (6G) is no exception. This paper provides an overview technology transformation from communication-centric forth (4G) fifth (5G) compute-centric 6G with cloud-native framework as foundation next technologies. We explain what plans achieve, fundamental reasons for this transformation, architecture enabling achieve objectives. intends provide...
[1] In the paper “Coseismic slip distribution of February 27, 2010 Mw 8.8 Maule, Chile earthquake” by Fred F. Pollitz et al. (Geophysical Research Letters, 38, L09309, doi:10.1029/2011GL047065, 2011) captions for Figure 1–3 are ordered incorrectly. The correct Figures appear here. [2] 1. Rupture areas associated with historic earthquakes along Andean megathrust and aftershocks event. Historical epicenters provided Centro Regional de Sismología para America del Sur aftershock locations...
The 2021 Maduo earthquake occurred in the interior of Bayan Har block Tibetan Plateau. We used space-born radar interferometry to study coseismic deformation this earthquake. Sentinel-1 InSAR observations along ascending and descending orbits provide deformation. Pixel offset tracking method is complement near rupture zone. surface trace ruptured fault can be clearly mapped by observations. constructed a three-dimensional slip model constrained interferograms pixel form geodetic inverse...
Abstract We analyzed the interferometric synthetic aperture radar data from ALOS‐1/PALSAR‐1 satellite to image interseismic deformation along Sumatran fault. The time series analysis reveals up ~20 mm/year of aseismic creep on Aceh segment Northern This is a large fraction total slip rate across this spatial extent extends for ~100 km. along‐strike variation has an inverse “U” shape. An moment accumulation shows that central part creeping section accumulates at approximately 50% surrounding...
Interferometric synthetic aperture radar (InSAR) technology provides a valuable tool for obtaining Earth surface deformation and topography at high spatial resolution crustal studies. Similar to global positioning system (GPS), InSAR measurements are affected by the Earth's ionospheric tropospheric layers as electromagnetic signals significantly refract while propagating through different layers. While GPS neutral atmosphere primarily distribution, pressure temperature of atmospheric gases,...
Suban field in southern Sumatra, Indonesia, is a fractured carbonate/crystalline wet-gas reservoir tectonically active island-arc setting. Reservoir-scale right-oblique reverse faults and folds that have trapped the hydrocarbons been related previously to deformation back-arc setting of Sumatra associated with oblique subduction Indo-Australian Plate at Sunda trench. Increased well productivity some parts was inferred correlate completing wells damage zones critically stressed faults....
Frequent fog occurrences over the ocean surface pose significant challenges to remote sensing and target detection in marine environments. Considering complexity dynamism of surface, we propose a predictive transmittance reflectance model (PTR), which is driven by wind speed utilized for predicting radiative transfer coupled ocean-sea The PTR combines hierarchical two-dimensional convolutional time series prediction network named Conv2Times with decomposable Monte Carlo (DMC) algorithm...