Results 41 to 50 of about 216 (161)

Three‐Dimensional Resistivity Structure of Iwo‐Yama Volcano, Kirishima Volcanic Complex, Japan: Relationship to Shallow Seismicity, Surface Uplift, and a Small Phreatic Eruption

Geophysical Research Letters, 2018
Iwo‐yama volcano, part of the Kirishima Volcanic Complex, has recently shown signs of unrest. We conducted a hypocenter relocation of shallow earthquakes and broadband magnetotelluric measurements around Iwo‐yama.
K. Tsukamoto, K. Aizawa, K. Chiba, W. Kanda, M. Uyeshima, T. Koyama, M. Utsugi, K. Seki, T. Kishita   +8 more
doaj   +1 more source

Validation of ShakeMaps Created From Global Navigation Satellite System (GNSS) Velocities

Earthquake Spectra, Volume 42, Issue 3, August 2026.
Ground velocity observations generated through a time difference of Global Navigation Satellite Systems (GNSS) phase observables and orbits have been shown to be comparable to seismic recordings without clipping during intense ground motions. Computing GNSS velocities is also computationally scalable and increases the density of ground motion ...
Jensen V. DeGrande, Brendan W. Crowell
wiley   +1 more source

Steep intraplate reverse faulting adjacent to the hypocenter of the 1923 Kanto earthquake: the Mw 5.0 western Kanagawa earthquake in eastern Japan on 9 August 2024

Earth, Planets and Space
Western Kanagawa, located in eastern Japan, has repeatedly experienced M-8 class megathrust earthquakes, referred to as Kanto earthquakes, within a tectonic setting characterized by the NNW-ward subduction of Philippine Sea plate. On 9 August 2024, an Mw
Yasunori Sawaki, Takahiro Shiina, Takahiko Uchide   +2 more
doaj   +1 more source

Reappraisal of Holocene Caldera Resurgence at Campi Flegrei (Southern Italy): A Long‐Lived Magma‐Driven Resurgent Dome System

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Caldera systems commonly experience inner resurgence, which shapes patterns of volcanic activity. However, incomplete reconstructions of past ground deformation can lead to incorrect recognition of precursory signals. The Campi Flegrei caldera (Italy) provides an exceptional opportunity to address this issue as uplifted marine sediments ...
Jacopo Natale, Stefano Vitale
wiley   +1 more source

Hypocenter Relocation in the Cianjur Region Using the Double-Difference Method

Journal of Physics: Conference Series
Abstract Indonesia’s seismicity results from the collision of the Eurasian, Indo-Australian, and Pacific plates, and the Cianjur region in West Java lies at the nexus of active faults and the southern Java subduction zone. To refine hypocenter locations and bolster seismic-hazard assessments, we applied the Double-Difference ...
Eko Minarto, Dhiva H. Putri, Andry S. Sembiring   +2 more
openaire   +1 more source

Step-wise relocation of ISC earthquake hypocenters for linearized tomographic imaging of slab structure [PDF]

Physics of the Earth and Planetary Interiors, 1992
A vast volume of seismic phase data, computed from routinely determined hypocenter locations, is presently available for seismic imaging techniques such as tomographic inversion and residual sphere analysis. Routinely reported earthquake hypocenters, however, can be in error by several tens of kilometers.
Hilst, R.D. van der, Engdahl, E.R.
openaire   +2 more sources

Hypocenter relocation to identify hidden faults and their environmental implications in the karst region of Maros-Pangkep, South Sulawesi

Journal of Degraded and Mining Lands Management
The Maros-Pangkep region in South Sulawesi is a tropical karst landscape not officially mapped as an active fault zone, yet it has exhibited increasing micro-seismic activity in recent years.
Kevin Hanyu Clinton Wulur, Subaer Junaedi, Agus Susanto, Joshua Purba, Ramadhan Priadi   +4 more
doaj   +1 more source

Kinematics and Dynamics of Normal Faults in Southern Tibet: Insights From the 2025 Mw 7.1 Dingri Earthquake

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Normal faults in southern Tibet have long suffered from limited ground‐based seismic and geodetic observations, constraining our understanding of both interseismic and coseismic processes and their interactions. The 2025 Mw 7.1 Dingri earthquake provides an opportunity to address these gaps.
Haicheng Xiong, Yanchuan Li, Xinjian Shan, Zhenjie Wang, Yingfeng Zhang, Zhaowu Guo, Chenglong Li, Renqi Lu, Jun Hua, Chunyan Qu   +9 more
wiley   +1 more source

Source models for the 2016 Mw6.0 Hutubi earthquake, Xinjiang, China: A possible reverse event

Geodesy and Geodynamics, 2017
South and north-dipping nodal planes from the U.S. Geological Survey moment tensor solution were used to invert global teleseismic body waves to reveal the source rupture process of the December 8, 2016, Mw6.0 Hutubi earthquake.
Gang Liu, Xuejun Qiao, Wei Xiong, Yu Zhou, Zhaosheng Nie, Chuanjia Xia   +5 more
doaj   +1 more source

Bayesian Inference of Fault Slip Heterogeneity and Overlap: Application to 2019 Ridgecrest Earthquakes and Afterslip

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Fault slip occurs in both seismic and aseismic styles with spatial variability across scales, yet non‐unique source inference limits our ability to resolve slip complexity and dynamics. Here we evaluate the effect of spatial smoothing regularization in Bayesian frameworks by comparing an unregularized (BUR) approach that samples distributed ...
Xiong Zhao, Junle Jiang
wiley   +1 more source