Results 211 to 220 of about 9,464 (227)

Seismic and gravity constraints on plate flexure and mantle rheology along the whole Hawaiian-Emperor seamount chain. [PDF]

Nat Commun
Watts AB, Xu C, Wessel P, Shillington DJ, Boston B, Dunn R.   +5 more
europepmc   +1 more source

Deep Learning for P-Wave First-Motion Polarity Determination and Its Application in Focal Mechanism Inversion

IEEE Transactions on Geoscience and Remote Sensing
The focal mechanism provides seismological constraints on the geological faults that generate the earthquakes and thus is important for regional seismotectonic research.
Yangkang Chen, Omar M Saad, Alexandros Savvaidis   +2 more
exaly   +3 more sources

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P‐Wave First‐Motion Polarity Determination Using Order Statistics and Entropy Theory (POSE) With Applications to Southeastern Tibetan Plateau

Journal of Geophysical Research: Solid Earth
Abstract The Focal Mechanism Solutions (FMSs) of small earthquakes provide valuable insights into crustal structure and stress conditions, while its reliability is limited by the accuracy of first‐motion polarity determination, which remains challenging.
Yijian Zhou, Haoran Meng, Shiyong Zhou   +2 more
exaly   +3 more sources

CFM: a convolutional neural network for first-motion polarity classification of seismic records in volcanic and tectonic areas

Frontiers in Earth Science, 2023
First-motion polarity determination is essential for deriving volcanic and tectonic earthquakes’ focal mechanisms, which provide crucial information about fault structures and stress fields. Manual procedures for polarity determination are time-consuming
Giovanni Messuti, Silvia Scarpetta, Ortensia Amoroso   +2 more
exaly   +2 more sources

Polarity specific adaptation to motion in the human visual system

Vision Research, 1991
Three experiments investigated polarity specific adaptation to movement. Experiment I tested for temporal polarity specific adaptation, using counterphase sawtooth gratings as adapting and test stimuli.
George Mather, Bernard Moulden
exaly   +2 more sources

Isolating retrograde and prograde Rayleigh-wave modes using a polarity mute

Geophysics, 2016
Estimates of S-wave velocity with depth from Rayleigh-wave dispersion data are limited by the accuracy of fundamental and/or higher mode signal identification.
Lee M Liberty, T Dylan Mikesell
exaly   +2 more sources

Electrical behavior of T-Wave polarity alternans in patients with congenital long QT syndrome

Journal of the American College of Cardiology, 2000
OBJECTIVESThis study was designed to evaluate the incidence and characteristics of onset of T-wave polarity alternans (TWPA) in patients with long QT syndrome.BACKGROUNDThe T-wave alternans is a phenomenon that consists of beat-to-beat variability in the
Ivan G Maia
exaly   +2 more sources

Comparison of square-wave and sinusoidal signal injection in sensorless polarity detection for PMSMs

2022
István Szalay, Dénes Fodor, Krisztián Enisz   +2 more
exaly  

The significance of U wave polarity in patients with a prior anterior myocardial infarction

European Heart Journal, 1990
Nariaki Kanemoto
exaly