Results 31 to 40 of about 105,084 (302)

Observation of Shallow Slow Earthquakes by Distributed Acoustic Sensing Using Offshore Fiber‐Optic Cable in the Nankai Trough, Southwest Japan

open access: yesGeophysical Research Letters, 2023
Off Cape Muroto area, along the Nankai Trough in southwest Japan, is a typical area with adjacent occurrences of slow and megathrust earthquakes. High‐resolution monitoring of slow earthquakes is necessary to understand tectonic conditions.
Satoru Baba   +7 more
doaj   +1 more source

The Radiated Energy of the 2004 Sumatra-Andaman Earthquake [PDF]

open access: yes, 2006
We use several independent methods to estimate the radiated energy E_R of the Sumatra-Andaman earthquake (M_w=9.0 to 9.3), and investigate whether the difference in the rupture patterns between north and south is reflected in the difference in the energy
Kanamori, Hiroo
core   +1 more source

Strongly Scattering Medium Along Slow Earthquake Fault Zones Based on New Observations of Short‐Duration Tremors

open access: yesGeophysical Research Letters, 2023
Tremors are a type of slow earthquake with long‐duration signals compared to ordinary earthquakes. The long signals have been considered to solely reflect their long source process.
A. Toh   +3 more
doaj   +1 more source

Precise Monitoring of Pore Pressure at Boreholes Around Nankai Trough Toward Early Detecting Crustal Deformation

open access: yesFrontiers in Earth Science, 2021
In our recent study, we detected the pore pressure change due to the slow slip event (SSE) in March 2020 at the two borehole stations (C0002 and C0010), where the other borehole (C0006) close to the Nankai Trough seems not because of instrumental drift ...
Keisuke Ariyoshi   +14 more
doaj   +1 more source

Persistent termini of 2004- and 2005-like ruptures of the Sunda megathrust [PDF]

open access: yes, 2012
To gain insight into the longevity of subduction zone segmentation, we use coral microatolls to examine an 1100-year record of large earthquakes across the boundary of the great 2004 and 2005 Sunda megathrust ruptures.
Briggs, Richard W.   +7 more
core   +2 more sources

Seismological Aspects of the December 2004 Great Sumatra-Andaman Earthquake [PDF]

open access: yes, 2006
The 2004 Great Sumatra-Andaman earthquake had an average source duration of about 500 sec. and a rupture length of 1,200–1,300 km. The seismic moment, M0, determined with a finite source model, was 6.5×1022 N-m, which corresponds to Mw=9.18.
Kanamori, Hiroo
core   +1 more source

Spectral-element simulations of long-term fault slip: Effect of low-rigidity layers on earthquake-cycle dynamics [PDF]

open access: yes, 2011
We develop a spectral element method for the simulation of long-term histories of spontaneous seismic and aseismic slip on faults subjected to tectonic loading.
Ampuero, J.-P., Kaneko, Y., Lapusta, N.
core   +1 more source

Mechanics of earthquakes [PDF]

open access: yes, 1994
An earthquake is a sudden rupture process in the Earth’s crust or mantle caused by tectonic stress. To understand the physics of earthquakes it is important to determine the state of stress before, during, and after an earthquake.
Kanamori, Hiroo
core   +1 more source

Classes of low-frequency earthquakes based on inter-time distribution reveal a precursor event for the 2011 Great Tohoku Earthquake [PDF]

open access: yes, 2018
Recently, slow earthquakes (slow EQ) have received much attention relative to understanding the mechanisms underlying large earthquakes and to detecting their precursors. Low-frequency earthquakes (LFE) are a specific type of slow EQ.
Shimada, Hirohiko, Tokuda, Tomoki
core   +3 more sources

Distribution of low-frequency earthquakes accompanying the very low frequency earthquakes along the Ryukyu Trench

open access: yesEarth, Planets and Space, 2017
This study investigated the activity and distribution of low-frequency earthquakes (LFEs) accompanying the very low frequency earthquakes (VLFEs) in the central and southern Ryukyu Trench.
Mamoru Nakamura
doaj   +1 more source

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