Results 81 to 90 of about 28,833 (197)

The oscillatory behaviour of the aftershocks rate of the 2001 Bhuj earthquake, India: observation and interpretation

Annals of Geophysics, 2004
A damaging earthquake of Mw 7.7, which struck the Bhuj region of India on January 26, 2001, was followed by a large number of aftershocks. The aftershock data available at Gauribidanur Seismic Array Station (GBA), India, till 869 h following the main ...
E. Unnikrishnan, A. G. Venkatesh Prasad, M. M. Abdul Razak, G. Jayachandran Nair   +3 more
doaj   +1 more source

Earthquake statistics and fractal faults

, 1996
We introduce a Self-affine Asperity Model (SAM) for the seismicity that mimics the fault friction by means of two fractional Brownian profiles (fBm) that slide one over the other.
A. Crisanti, B. B. Mandelbrot, B. Gutenberg, B. Mandelbrot, C. A. Aviles, D. L. Turcotte, F. Omori, G. Paladin, G. R. Grimmett, H. J. Herrmann, J. Huang, J. M. Carlson, K. Christensen, K. Ito, L. Pietronero, O. Mazzella, P. Bak, P. Bak, P. G. Okubo, R. Burridge, R. F. Smalley, Jr., R. F. Voss, R. Hallgass, R. S. Wu, S. R. Brown, T. Hirata, T. Ouchi, V. De Rubeis, V. De Rubeis, V. De Rubeis, V. Loreto, W. Power, Y. P. Kagan, Y. Y. Kagan, Z. Olami   +34 more
core   +1 more source

Detection and Modeling of the Effect of Large Earthquakes in GRACE/GRACE‐FO Mascons

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract The usefulness of Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow‐On (GRACE/FO) data products for ocean studies remains limited in a few areas, where large gravity signals from the 2011 Japan earthquake and three major earthquakes in the Andaman‐Sumatra area (in 2004, 2007, and 2012) obscure vastly smaller signals of interest ...
Jennifer A. Bonin, Nadege Pie, Don Chambers, Mark E. Tamisiea, Himanshu Save   +4 more
wiley   +1 more source

Aging in coherent noise models and natural time

, 2004
Event correlation between aftershocks in the coherent noise model is studied by making use of natural time, which has recently been introduced in complex time-series analysis.
B. Gutenberg, F. Omori, J. F. Pacheco, R. V. Sole, Sumiyoshi Abe, Ugur Tirnakli   +5 more
core   +1 more source

Application of Singular Spectrum Analysis (SSA) for Delineating Geomagnetic and Lithospheric Signatures Associated With M7.6 Japan Earthquake

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract In this paper, Singular Spectral Analysis (SSA) is applied to the geomagnetic field to delineate signatures from different sources, such as geomagnetic variability and lithospheric processes. We performed SSA on the Y component of the Swarm satellite magnetic field By during the period from September 2023 to January 2024. Eigen values obtained
Amrita Yadav, Jayashree Bulusu, Essam Ghamry, Dedalo Marchetti, A. P. Dimri   +4 more
wiley   +1 more source

Mapping finite-fault earthquake slip using spatial correlation between seismicity and point-source Coulomb failure stress change

Seismica
Most earthquake energy release arises during fault slip many kilometers below the Earth’s surface. Understanding earthquakes and their hazard requires mapping the geometry and distribution of this slip.
Anthony Lomax
doaj   +1 more source

Diminishing high‐frequency directivity due to a source effect: Empirical evidence from small earthquakes in the Abruzzo region, Italy

Geophysical Research Letters, 2016
The aim of this study is to investigate the directivity effects of ~250 aftershocks (magnitudes 3–5.5) of the Mw 6.1 2009 L'Aquila earthquake (central Italy).
F. Pacor, F. Gallovič, R. Puglia, L. Luzi, M. D'Amico   +4 more
doaj   +1 more source

Fault Kinematics of the 2019–2026 Puerto Rico Earthquake Sequence: Conjugate Faulting Within a Zone of Oblique Subduction

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract The 2019–2026 southwestern Puerto Rico earthquake sequence has the characteristics of an earthquake swarm with over 9,000 events of Mw 2.5 or greater over an area of 1,500 km2, and the largest event is an Mw 6.4 on 7 January 2020. Previous studies have proposed two structural interpretations: (a) an E‐striking, N‐dipping normal fault hosting ...
Lei Sun, Xiaohua Xu, Paul Mann, Jean‐Claude Hippolyte   +3 more
wiley   +1 more source

Role of a Hidden Fault in the Early Process of the 2024 Mw7.5 Noto Peninsula Earthquake

Geophysical Research Letters
The 2024 Mw 7.5 Noto Peninsula, Japan, earthquake was initiated within the source region of intense swarm activity. To reveal the mainshock early process, we relocated the earthquake hypocenters and found that many key phenomena, including the mainshock ...
Keisuke Yoshida, Ryota Takagi, Yo Fukushima, Ryosuke Ando, Yusaku Ohta, Yoshihiro Hiramatsu   +5 more
doaj   +1 more source

Integrating GNSS and Hydrological Data to Understand Seasonal Microseismicity at La Soufrière de Guadeloupe

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract La Soufrière de Guadeloupe volcano exhibits microseismic activity dominated by volcano‐tectonic repeaters, mainly occurring in swarms clustered in a sub‐vertical conduit beneath the Tarissan acid lake (TAS) at depths less than 800 m. Following the April 2018 earthquake (Mlv 4.1), which likely damaged the dome, swarms intensified and show ...
Laëtitia Pantobe, Kristel Chanard, Arnaud Burtin, Pierre Sakic, Jean‐Christophe Komorowski   +4 more
wiley   +1 more source