Results 41 to 50 of about 425 (169)

Using Tectonic Tremor to Constrain Seismic Wave Attenuation in Cascadia [PDF]

Geophysical Research Letters, 2018
AbstractTectonic tremor can be used to constrain seismic wave attenuation for use in ground motion prediction equations in regions where moderately sized earthquakes occur infrequently. Here we quantify seismic wave attenuation by inverting tremor ground motion amplitudes in different frequency bands of interest, to determine frequency dependence of ...
Geena F. Littel, Amanda M. Thomas, Annemarie S. Baltay   +2 more
openaire   +1 more source

Automated hypocenter determination of tectonic tremors in the Nankai subduction zone using convolutional neural networks combined with semblance analysis

Earth, Planets and Space
Recent advances in deep learning have enhanced our ability to analyze seismic waveforms. Here, we developed and evaluated a convolutional neural network (CNN) model to classify tectonic tremors, earthquakes, and noise in seismic waveform data recorded by
Amane Sugii, Yoshihiro Hiramatsu, Takahiko Uchide, Kazutoshi Imanishi   +3 more
doaj   +1 more source

Development of a modified envelope correlation method based on maximum-likelihood method and application to detecting and locating deep tectonic tremors in western Japan

Earth, Planets and Space, 2019
We develop a modified envelope correlation method for locating deep tectonic tremors and apply it to construct a tremor catalog for western Japan.
Naoto Mizuno, Satoshi Ide
doaj   +1 more source

Citizen Scientists Help Detect and Classify Dynamically Triggered Seismic Activity in Alaska

Frontiers in Earth Science, 2020
In this citizen science project, we ask citizens to listen to relevant sections of seismograms that are converted to audible frequencies. Citizen scientists helped identify local seismic events whose recorded signals are much smaller than those ...
Vivian Tang, Boris Rösler, Jordan Nelson, JaCoya Thompson, JaCoya Thompson, Suzan van der Lee, Suzan van der Lee, Suzan van der Lee, Kevin Chao, Kevin Chao, Michelle Paulsen   +10 more
doaj   +1 more source

Volcanic and Tectonic Sources of Seismicity Near the Tanaga Volcanic Cluster, Alaska

Geochemistry, Geophysics, Geosystems, 2023
Tanaga Island in the Central Aleutian Islands includes four stratovolcanoes: Sajaka, Tanaga, and East Tanaga in the northwest, and Takawangha in the central part of the island. Of these volcanoes, only Tanaga has a confirmed record of historical eruptive
Kevin F. Lally, Jacqueline Caplan‐Auerbach, John A. Power   +2 more
doaj   +1 more source

Advances in vital‐sign prediction and early‐warning models for underground coal mine workers integrating environmental factors

Deep Underground Science and Engineering, EarlyView.
This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu, Dawei Cui, Yingjie Liu, Yuntao Liang, Yue Zhang   +4 more
wiley   +1 more source

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki, Michael E. Jackson, Glen S. Mattioli, David J. Mencin, Karl Feaux, Donna J. Charlevoix   +5 more
wiley   +1 more source

Tectonic Tremor Reveals Slow Deformation Along the Antarctic–South American Subduction Zone

Geophysical Research Letters
The Antarctic–South American subduction zone is among the least explored convergent margins and lacks documented large interplate earthquakes despite ongoing convergence.
K. Azúa, S. Ruiz, S. Ide
doaj   +1 more source

Environmental pollution and sustainable restoration of the Yamuna River: A review of water quality, health risks, and phycoremediation

River, Volume 5, Issue 3, Page 398-418, August 2026.
Abstract The Yamuna River, one of India's most significant river systems and the largest tributary of the Ganges River, serves critical ecological, socio‐economic, and cultural functions. However, rapid urbanization, industrialization, and intensive agriculture have severely degraded its water quality, resulting in extensive pollution with untreated ...
Dharmendra Kumar, Gaurav Kumar, Elangbam Geetanjali, Rashmi Shakya, Deepali Verma, Shivankar Agrawal, Dinabandhu Sahoo   +6 more
wiley   +1 more source

Preliminary geological evidence for multiple tremors in Kwoi, Central Nigeria

Geoenvironmental Disasters, 2020
Preliminary field assessment of the geological evidence for the September 2016 multiple tremors was felt as far as 10 km in Nok and Chori villages in the north and northwest of Kwoi respectively.
Nathaniel Goter Goki, Solomon Anayo Onwuka, Adama Baba Oleka, Shekwoyandu Iyakwari, Ishak Yau Tanko, Aisha Abubakar Kana, Allu Augustine Umbugadu, Halima Osu Usman   +7 more
doaj   +1 more source