Results 31 to 40 of about 1,209 (179)

Focal Mechanism and Parameter of Volcano-Tectonic Earthquake Source, in Mount Guntur, West Java

Indonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v6i1.111Guntur Volcano in West Java is one of the most active volcanoes in Indonesia. The last eruption took place in 1847 and the volcanic activity has been dormant since then, however its seismicity is active.
Sri Hidayati, Y. Suparman, A. Loeqman
doaj   +1 more source

Generation of infrasonic signals during earthquakes under Lake Hovsgool (Northern Mongolia) on December 5, 2014

Solar-Terrestrial Physics, 2018
The paper discusses the results of the detection of seismic and infrasonic waves generated by a major earthquake and its aftershock (the moment magnitude MW=4.9 and MW=4.2 respectively), which occurred in northern Mongolia under Lake Hovsgool on December
Sorokin A.G., Klyuchevskii А.V., Demyanovich V.M.   +2 more
doaj   +1 more source

Systematic biases in subduction zone hypocenters [PDF]

Geophysical Research Letters, 2009
Earthquake hypocenters from global datasets commonly have regional biases in their locations due to the use of a one‐dimensional velocity model in their location. To analyze this effect, we group intermediate‐depth earthquakes into forty‐four 500‐km‐long sections of subduction zone. We relocate earthquakes in each group relative to one another and in a
Ellen M. Syracuse, Geoffrey A. Abers
openaire   +1 more source

Surface Consistent Seismic Hazard Assessment in the Shillong Plateau, Northeast India: A Probabilistic Approach Using Multiple Source Models and a Logic Tree Framework

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 11, Page 2855-2879, September 2026.
ABSTRACT We perform probabilistic seismic hazard analysis (PSHA) in the Shillong Plateau by clubbing the up‐to‐date earthquake data and seismotectonic properties of the study area. Twenty‐one areal seismic sources are delineated based on the updated earthquake catalog, tectonic, and fault plane solutions.
Mohd Shahabuddin, William Kumar Mohanty, Eleftheria Papadimitriou   +2 more
wiley   +1 more source

Deep Seismic Tremors in the 2025 Santorini Seismo‐Volcanic Crisis Highlight Magmatic Feeding From a Mid‐Crustal Reservoir

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract An intense seismic swarm started on 27 January 2025 in the Santorini‐Amorgos region and lasted for approximately 45 days. A widely observed seismic tremor on 14 February 2025 suggested a volcanic origin for the 2025 Santorini crisis. Here we present an in‐depth combined seismological analysis of the earthquakes and tremors that occurred during
Jean Soubestre, Jannes Münchmeyer, Quentin Higueret, Nikolai M. Shapiro, Florent Brenguier, Anthony Lomax   +5 more
wiley   +1 more source

ANOMALOUS ERRORS IN DETERMINING FOCUS COORDINATES EARTHQUAKES AND SUGGESTIONS FOR THEIR ELIMINATION

Вестник Дагестанского государственного технического университета: Технические науки, 2019
Objectives The aim of the study is to develop a method for estimating the speed of seismic waves in different directions of propagation and by taking into account the dimensions of the focus, reducing the error in determining the coordinates of the ...
G. K. Aslanov, T. G. Aslanov, U. A. Musaeva   +2 more
doaj   +1 more source

An Inflating Upper Mantle Magma Reservoir Beneath the Tip of the Condor Seamount, Azores Revealed by Rapid‐Response Ocean‐Bottom‐Seismometer Data

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Condor Seamount is among the most seismically active regions on the Azores Plateau. In December 2019, an earthquake crisis occurred at the tip of the seamount, which was strongly felt on nearby islands. Two months after the peak of the crisis, we deployed a local network of five ocean‐bottom seismometers around the seamount, recording ...
Yingchen Liu, Neil Mitchell, Dietrich Lange, Ingo Grevemeyer   +3 more
wiley   +1 more source

Displacement Above the Hypocenter of the 2011 Tohoku-Oki Earthquake [PDF]

Science, 2011
The Quake That Rocked Japan The 11 March 2011 magnitude 9.0 Tohoku-Oki megathrust earthquake just off the Eastern coast of Japan was one of the largest earthquakes in recorded history. Japan's considerable investment in seismic and geodetic networks allowed for the collection of rapid and reliable data on the mechanics of the ...
Mariko, Sato, Tadashi, Ishikawa, Naoto, Ujihara, Shigeru, Yoshida, Masayuki, Fujita, Masashi, Mochizuki, Akira, Asada   +6 more
openaire   +2 more sources

Seismic Exploration for Magmatic Brine Lenses: An Example From Soufrière Hills Volcano, Montserrat

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract The majority of metallic ore deposits are related to processes associated with ancient or modern volcanic systems. Beyond geothermal energy production, volcanoes also represent a potential resource of critical metals, including those required for carbon‐neutral technologies. Geothermal metals occur in subsurface fluid reservoirs fed by surface
Petros Bogiatzis, J.‐Michael Kendall, Jonathan D. Blundy, Graham A. Ryan, Alan F. Baird   +4 more
wiley   +1 more source

Dike‐Induced Earthquakes as Probes of the Local Stress Field Prior to the 1998 Eruption of the Piton de la Fournaise Volcano, La Réunion

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Volcano‐tectonic (VT) earthquakes generated during dike propagation provide useful constraints on stress changes in volcanic systems. During the 1998 pre‐eruptive unrest at Piton de la Fournaise, ∼600 VT earthquakes were recorded. Using manually picked first‐motion polarities and corrected station metadata, we calculated more than 400 high ...
Yiwen Huang, Yan Zhan, Diana C. Roman, Valérie Ferrazzini, Zacharie Duputel   +4 more
wiley   +1 more source