Results 81 to 90 of about 425 (169)

Enhanced deep learning approach for detecting and locating tectonic tremors in the Nankai subduction zone

Earth, Planets and Space
Tectonic tremors are key indicators of slow-slip phenomena, and detecting them accurately is a challenging task. Conventional techniques often fail to detect tremors during periods of intense tremor activity.
Yuya Jinde, Amane Sugii, Yoshihiro Hiramatsu   +2 more
doaj   +1 more source

Aeromagnetic mapping of fault architecture along Lagos–Ore axis, southwestern Nigeria

Open Geosciences, 2020
A seismic wave is released when there is sudden displacement on a fault plane. The passage of this wave along the fault plane or within the lithosphere could result in ground shaking or vibration at the surface of the Earth.
Oladejo Olagoke Peter, Adagunodo Theophilus Aanuoluwa, Sunmonu Lukman Ayobami, Adabanija Moruffdeen Adedapo, Enemuwe Charity Adaeze, Isibor Patrick Omoregie   +5 more
doaj   +1 more source

Detection of Shallow Tectonic Tremors in Hyuga‐nada, Nankai Trough, Using the Newly Established N‐Net OBS Network

Geophysical Research Letters
Monitoring tectonic tremors is crucial for understanding stress release in subduction zones and assessing megathrust earthquake risk. The Hyuga‐nada region, at the western edge of the Nankai Trough, Japan, provides a natural laboratory for investigating ...
Kodai Sagae, Masayuki Kano, Suguru Yabe, Takahiko Uchide   +3 more
doaj   +1 more source

Detailed Shallow Shear Velocity Structure in the Nankai Trough From Ambient Noise Differential Adjoint Tomography: Implications for Earthquake Generation Mechanisms

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Seismic and aseismic slip has been reported in the Nankai Trough. In this study we apply ambient noise differential adjoint tomography to obtain a high‐resolution S‐wave velocity (Vs) model in the Nankai Trough. The Vs in the very shallow imbricate thrust zone is higher than that on both the seaward and landward sides.
Lina Gao, Xin Liu, Ayako Nakanishi, Haoran Meng, Xi Wang, Zhanwen Li, Gou Fujie   +6 more
wiley   +1 more source

Event‐Feature‐Based Clustering Reveals Continuous Distribution of Tectonic Tremors of 0.3–100 s: Application to Western Japan

Geophysical Research Letters
We develop a methodology to compile an objective tremor catalog by utilizing distinctive event features that differentiate tectonic tremors from non‐tremor events, and combining the envelope cross‐correlation method with clustering technique and neural ...
Seiya Yano, Satoshi Ide
doaj   +1 more source

An Integrated Geophysical Approach to Track Magma Intrusion: The 2018 Christmas Eve Eruption at Mount Etna

Geophysical Research Letters, 2019
On 24 December 2018, a violent eruption started at Mount Etna from a fissure on the southeastern flank. The intrusive phenomenon, accompanied by intense Strombolian and lava fountain activity, an ash‐rich plume, and lava flows, was marked by significant ...
F. Cannavo', M. Sciotto, A. Cannata, G. Di Grazia   +3 more
doaj   +1 more source

Statistical characteristics of non-volcanic tremor distributions along the Mexican Subduction Zone [PDF]

Solid Earth
We analyze the statistical characteristics of non-volcanic tremor (NVT) sequences in the Mexican subduction zone. To this end, we employ various techniques, including the Gutenberg–Richter relationship, non-extensive statistics, and multifractal ...
Q. Rodríguez-Pérez, Q. Rodríguez-Pérez, V. H. Márquez-Ramírez, F. R. Zúñiga   +3 more
doaj   +1 more source

Evidence for Stress Diffusion and Along‐Strike Segmentation in Cascadia Tremor Migrations Lasting Minutes to Weeks

AGU Advances
The properties and rheology of subduction zones have been intensively studied to forecast potential megathrust earthquake scenarios. However, in Cascadia, the absence of recent megathrust events limits available seismic evidence.
Siyuan Zhang, Heidi Houston
doaj   +1 more source

Does Episodic Tremor and Slip Influence Seismicity in Northern Cascadia?

Seismica
This paper presents a spatial-temporal analysis of potential links between episodic tremor and slip (ETS) and seismicity in northern Cascadia. We define spatial-temporal clusters of tremor episodes to represent ETS between 2006 and 2024, and we merge ...
Madison Bombardier, Johh F. Cassidy, Stan E. Dosso   +2 more
doaj   +1 more source

Relationship between moment rate of short-term slow slip events and moment rate of tectonic tremors in a frequency range of 1–10 Hz

Earth, Planets and Space
Simultaneous activations of slow slip events (SSEs) and tectonic tremors are observed along subduction zones, and collectively referred to as episodic tremor and slip (ETS).
Akio Katsumata, Kazuki Miyaoka, Takahiro Tsuyuki, Satoshi Itaba, Masayuki Tanaka, Takeo Ito, Akiteru Takamori, Akito Araya   +7 more
doaj   +1 more source