Results 11 to 20 of about 9,464 (227)

A Microseismic Phase Picking and Polarity Determination Model Based on the Earthquake Transformer

Applied Sciences
Phase arrival times and polarities provide essential kinematic constraints for and dynamic insights into seismic sources, respectively. This information serves as fundamental data in seismological study.
Ling Peng, Lei Li, Xiaobao Zeng
doaj   +2 more sources

MOESM1 of P-wave first-motion polarity determination of waveform data in western Japan using deep learning

, 2019
Additional file 1: Fig. S1. Polarity plots on maps. Polarities determined by the CNN models and human experts are plotted on a map. Black and white circles represent match examples, which denote Up and Down, respectively. Dark blue and light blue circles represent mismatch examples. Dark (Light) blue means that the decision by human experts is Up (Down)
Hara, Shota, Fukahata, Yukitoshi, Iio, Yoshihisa   +2 more
openaire   +2 more sources

DataSheet1_DiTingMotion: A deep-learning first-motion-polarity classifier and its application to focal mechanism inversion.docx

, 2023
Accurate P-wave first-motion-polarity (FMP) information can contribute to solving earthquake focal mechanisms, especially for small earthquakes, to which waveform-based methods are generally inapplicable due to the computationally expensive high ...
Ming Zhao (48501), Miao Zhang (17216), Zhuowei Xiao (12055961), Lin Tang (65412), Yun Yang (417125), Shi Chen (120917)   +5 more
core   +1 more source

Mechanism of High Frequency Shallow Earthquake Source in Mount Soputan, North Sulawesi

Indonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v6i3.122Moment tensor analysis had been conducted to understand the source mechanism of earthquakes in Soputan Volcano during October - November 2010 period. The record shows shallow earthquakes with frequency about 5 - 9 Hz.
Yasa Suparman, E. Kriswati, Y. E. Pamitro   +2 more
doaj   +1 more source

Focal mechanism of Luding M 6.8 earthquake, September 2022 and analysis of the loading role of the tectonic stress on the seismogenic fault

Earthquake Research Advances, 2023
To reveal the seismogenic mechanism of the Luding earthquake, we employed the 118 China Seismic Network stations to collect the P-wave polarity data from each station, which was then used in the P-wave first motion approach to calculate the focal ...
Yansong Hu, Zhenyue Li, Ruifeng Liu, Zibo Wang   +3 more
doaj   +1 more source

The integration of local chromatic motion signals is sensitive to contrast polarity [PDF]

, 2011
Peer ...
Martinovic, Jasna, Malek, Stephanie, Ruppertsberg, Alexa, MARCO BERTAMINI, JASNA MARTINOVIC, SOPHIE M. WUERGER, STEPHANIE MALEK, Bertamini, Marco, Wuerger, Sophie M., ALEXA RUPPERTSBERG   +9 more
core   +1 more source

Event-related alpha suppression in response to facial motion [PDF]

, 2014
This article has been made available through the Brunel Open Access Publishing Fund.While biological motion refers to both face and body movements, little is known about the visual perception of facial motion. We therefore examined alpha wave suppression
Michael J. Wright (524298), Spencer Janine V., Christine Girges, Girges, C, Michael J Wright, Janine V. Spencer (524299), Wright, MJ, Spencer, JV, O'Brien, JMD, O’Brien Justin M. D., O'Brien, J, Janine V Spencer, Justin M. D. O’Brien (524300), Girges Christine, Justin M D O'Brien, Spencer, J, Christine Girges (524297), Wright, M, O’Brien, JMD, Wright Michael J.   +19 more
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The Polarity Reversal of Lightning‐Generated Sky Wave

, 2020
The polarity reversal of the lightning‐generated first sky wave as a function of the observation distance is studied using a novel approach combining the finite‐difference time domain (FDTD) method and the superposition principle of electromagnetic waves.
Azadifar, M., Rachidi, F., Hou, W., Zhang, Q., Rubinstein, M.   +4 more
core   +2 more sources

Non‐Double‐Couple Microearthquakes in the Focal Area of the 2000 Western Tottori Earthquake (M 7.3) via Hyperdense Seismic Observations

Geophysical Research Letters, 2020
Earthquakes with non‐double‐couple (NDC) components are indicators of geometric fault complexity, anisotropy, tensile failure, and fluid flow effects.
Yuto Hayashida, Satoshi Matsumoto, Yoshihisa Iio, Shin'ich Sakai, Aitaro Kato   +4 more
doaj   +1 more source

Focal mechanisms and the stress field in the aftershock area of the 2018 Hokkaido Eastern Iburi earthquake (M JMA = 6.7)

Earth, Planets and Space, 2021
The tectonic stress field was investigated in and around the aftershock area of the Hokkaido Eastern Iburi earthquake (M JMA = 6.7) occurred on 6 September 2018.
Yuki Susukida, Kei Katsumata, Masayoshi Ichiyanagi, Mako Ohzono, Hiroshi Aoyama, Ryo Tanaka, Masamitsu Takada, Teruhiro Yamaguchi, Kazumi Okada, Hiroaki Takahashi, Shin’ichi Sakai, Satoshi Matsumoto, Tomomi Okada, Toru Matsuzawa, Hiroki Miyamachi, Shuichiro Hirano, Yoshiko Yamanaka, Shinichiro Horikawa, Masahiro Kosuga, Hiroshi Katao, Yoshihisa Iio, Airi Nagaoka, Noriko Tsumura, Tomotake Ueno, The Group for the Aftershock Observations of the 2018 Hokkaido Eastern Iburi Earthquake   +24 more
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