A5052936135- High-pressure geophysics and materials
- Geological and Geophysical Studies
- earthquake and tectonic studies
- Geomagnetism and Paleomagnetism Studies
- Remote-Sensing Image Classification
- Geophysics and Gravity Measurements
- Geochemistry and Geologic Mapping
- Mineral Processing and Grinding
- Geological and Geochemical Analysis
China University of Petroleum, East China
2019-2020
Qingdao National Laboratory for Marine Science and Technology
2019
Abstract Most great earthquakes on subduction zone plate boundaries have large coseismic slip concentrated along the contact between subducting slab and upper crust. On 4 March 2021, a magnitude 7.4 foreshock struck 1 hr 47 min before 8.1 earthquake northern Kermadec island arc. The mainshock is largest well‐documented underthrusting event ∼2,500‐km long Tonga‐Kermadec zone. Using teleseismic, geodetic, tsunami data, we find that all substantial in located mantle/slab interface at depths...
Moho geometry is an important parameter in geodynamic understanding. Seismic methods can provide accurate burial depths, but the coverage low; widely used CRUST1.0 model under oceans greatly restricted by a low of seismic data. Gravity inversion high undulations, accuracy relatively low. Observed gravity anomalies integrate effects induced 3-D density perturbations Earth. For studies specific interface based on gravity, all caused other interfaces should be removed from total anomaly map...
Abstract Studies on the physical properties of entire Izu–Bonin–Mariana (IBM) subduction zone contribute to comprehensive seismotectonic understanding and earthquake potential assessment, especially given previous controversial conclusions. Determining seismic b-value is a method that has been used for other regions adopted here study spatiotemporal variations along IBM system. Based frequency–magnitude distribution relation log10(N)=a−bM, b-values are mapped within using earthquakes with...