A5045328325- earthquake and tectonic studies
- High-pressure geophysics and materials
- Seismic Waves and Analysis
- Geological and Geochemical Analysis
- Earthquake Detection and Analysis
- Seismology and Earthquake Studies
- Geological and Geophysical Studies
- Seismic Imaging and Inversion Techniques
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Geophysics and Sensor Technology
- Landslides and related hazards
- Seismic Performance and Analysis
- Geotechnical and Geomechanical Engineering
- Advanced SAR Imaging Techniques
- Geophysical Methods and Applications
- GNSS positioning and interference
- Advanced Measurement and Metrology Techniques
- Geological and Tectonic Studies in Latin America
- Advanced Fiber Optic Sensors
- Soil Moisture and Remote Sensing
- Anomaly Detection Techniques and Applications
- Geochemistry and Geologic Mapping
- Atomic and Subatomic Physics Research
- Cryospheric studies and observations
- Interconnection Networks and Systems
Earth Observatory of Singapore
2016-2025
Nanyang Technological University
2016-2025
Institute of Geology and Geophysics
2024-2025
Chinese Academy of Sciences
2024-2025
East Asia School of Theology
2020-2024
Guangxi Institute of Botany
2017
California Institute of Technology
2008-2015
Planetary Science Institute
2013-2014
China Earthquake Administration
2009
University of Science and Technology of China
2009
Geophysical observations from the 2011 moment magnitude (M(w)) 9.0 Tohoku-Oki, Japan earthquake allow exploration of a rare large event along subduction megathrust. Models for this indicate that distribution coseismic fault slip exceeded 50 meters in places. Sources high-frequency seismic waves delineate edges deepest portions and do not simply correlate with locations peak slip. Relative to M(w) 8.8 2010 Maule, Chile earthquake, Tohoku-Oki was deficient radiation--a difference we attribute...
The 2024 moment magnitude 7.5 Noto Peninsula (Japan) earthquake caused devastation to communities and was generated by a complex rupture process. Using space geodetic seismic observations, we have shown that the event deformed peninsula with peak uplift reaching 5 meters at west coast. Shallow slip exceeded 10 on an offshore fault. Peak stress drop greater than megapascals. This devastating began slow propagation lasting 15 20 seconds near its hypocenter, where swarms had surged since 2020...
The distribution of slip during an earthquake and how it propagates among faults in the subduction system play a major role seismic tsunami hazards, yet they are poorly understood because offshore observations often lacking. Here we derive rupture evolution 2016 Mw 7.9 Kaikōura (New Zealand) that reconcile surface rupture, space geodetic measurements, seismological waveform records. We use twelve fault segments, with eleven crust one on megathrust interface, to model data match features...
Abstract A sequence of large strike‐slip earthquakes occurred west Sunda Trench beneath the Wharton Basin. First reports indicate that main shock was extremely complex, involving three to four subevents (M w > 8) with a maze aftershocks. We investigate slip models two largest by joint inversion regional and teleseismic waveform data. Using M 7.2 foreshock, we developed hybrid Green's Functions for stations approximate mixture oceanic continental paths. The fault geometry is defined based...
Nuclear testing under the radar North Korea conducted its sixth underground nuclear weapons test in September 2017. The seismic waves generated from allow for triangulation and explosive yield estimates. However, Wang et al. show that synthetic aperture (SAR) should be added to arsenal of techniques used detect characterize tests. SAR tracks deformation space, which resulted a better constraint source parameters by using subsequent collapse Mount Mantap. occurred at depth about half...
Crustal rock strength from outer space The response of crustal to stresses is challenging estimate yet vital for determining risks events such as earthquakes. Moore et al. take advantage the recent M w 7.1 Kumamoto earthquake in Japan determine rheology rocks region. observed inversion strain rates demonstrates that certain areas have stiff and others (e.g., under Aso volcanic complex) much weaker rock. results match up with expectations, which means method can successfully measure...
Abstract The February 2023 Turkey‐Syria Earthquake doublet ruptured multiple segments of the East Anatolian Fault (EAF) Zone. Dominating seismicity focal mechanism shifted dramatically from strike‐slip to normal‐faulting after doublet. To better understand this shift, here we derived a comprehensive 3D co‐seismic displacement field and performed stress analysis. Abundant space geodetic data were used generate high‐resolution surface displacement, which provide tight constraints on fault...
Abstract Megathrust earthquakes often break the slab‐crust interface and radiate high‐frequency seismic waves from down dip of their coseismic slip. In contrast, we show that 2021 Mw8.1 Kermadec earthquake deviates this mode. We resolve kinematic rupture process event by leveraging finite fault inversions a calibrated tele‐seismic back‐projection imaging method. The reveal compact slip patch with ∼7‐m peak located on slab‐mantle at depth 20–50 km, while shows energy was radiated ∼20 km along...
Research Article| March 01, 2015 The 2014 Mw 6.1 South Napa Earthquake: A Unilateral Rupture with Shallow Asperity and Rapid Afterslip Shengji Wei; Wei aEarth Observatory of Singapore (EOS), Nanyang Technological University, 50 Avenue, Block N2‐01a‐15, 639798, Singaporeshjwei@gmail.com Search for other works by this author on: GSW Google Scholar Sylvain Barbot; Barbot Robert Graves; Graves bU.S. Geological Survey, 525 Wilson Pasadena, California 91106 U.S.A. James J. Lienkaemper; Lienkaemper...
The 2015Mw7.8 Gorkha earthquake sequence that unzipped the lower edge of Main Himalayan Thrust (MHT) in central Nepal provides an exceptional opportunity to understand fault geometry this region. However, limited number focal mechanisms and poor horizontal locations depths earthquakes global catalog impede us from clearly imaging ruptured MHT. In study, we generalized Amplitude Amplification Factor (AAF) method teleseismic distance allows model P-waves up 1.5 Hz. We used well-constrained...
Research Article| May 18, 2016 Seismic Sensor Misorientation Measurement Using P‐Wave Particle Motion: An Application to the NECsaids Array Xin Wang; Wang aKey Laboratory of Earth and Planetary Physics, Institute Geology Geophysics, Chinese Academy Sciences (IGGCAS), No. 19, Beitucheng Western Road, Chaoyang District, Beijing 100029, P. R. Chinachenqf@mail.iggcas.ac.cnwangxin@mail.iggcas.ac.cnjuanli@mail.iggcas.ac.cn Search for other works by this author on: GSW Google Scholar Qi‐Fu Chen;...
Research Article| March 01, 2013 Report on the August 2012 Brawley Earthquake Swarm in Imperial Valley, Southern California Egill Hauksson; Hauksson aCalifornia Institute of Technology, 1200 East Blvd., Pasadena, 91125 U.S.A.hauksson@caltech.edu Search for other works by this author on: GSW Google Scholar Joann Stock; Stock Roger Bilham; Bilham bUniversity Colorado, Department Geological Sciences, Campus Box 399, Boulder, Colorado 80309‐0399 U.S.A. Maren Boese; Boese Xiaowei Chen; Chen...
Research Article| July 25, 2018 The 2016 Mw 6.5 Pidie Jaya, Aceh, North Sumatra, Earthquake: Reactivation of an Unidentified Sinistral Fault in a Region Distributed Deformation Muzli Muzli; aEarth Observatory Singapore, Nanyang Technological University, shjwei@ntu.edu.sgfAlso at Agency for Meteorology, Climatology, and Geophysics (BMKG), Indonesia. Search other works by this author on: GSW Google Scholar Muksin Umar; Umar bDepartment Physics, Syiah Kuala Banda Indonesia Andri Dian Nugraha;...
The deformation at well-defined, narrow plate boundaries depends on the relative motion, but how takes place within a distributed boundary zone remains conundrum. This was confirmed by seismological analyses of 2012 great Wharton Basin earthquakes [moment magnitude (Mw) 8.6], which suggested rupture several faults high angles to one another. Using high-resolution bathymetry and seismic reflection data, we report discovery new N294°E-striking shear zones, oblique fabric. These zones are...