Results 81 to 90 of about 138 (115)

Statistics of Seismic Tremors with Harmonic Overtones Recorded at Syowa Station, Antarctica: October 2014-March 2015

International Journal of Geosciences, 2017
During the period from October 2014 to March 2015, a total number of 82 seismic tremors and 66 ice-quakes were identified in both three-component short-period seismographs (HES) and broadband seismographs (STS-1) at Syowa Station (SYO), Antarctica. Statistics of the number of these tremors indicated that many tremors were likely to occur when large ...
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Additional file 1 of Linking the flow-induced tremor model to the seismological observation: application to the deep harmonic tremor at Hakone volcano, Japan

Additional file 1. Delivation of the basic equations.
Ozaki, Tomonori, Yukutake, Yohei, Ichihara, Mie   +2 more
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Characterization of harmonic tremor at Santiaguito volcano and its implications for eruption mechanisms

, 2020
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A non-linear time-series analysis of the harmonic tremor observed at Shinmoedake volcano, Japan

Geophysical Journal International, 2018
Yuki Natsume, Mie Ichihara, Minoru Takeo
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Mechanisms of harmonic tremors at Sakurajima volcano, Japan

Mechanisms of harmonic tremors at Sakurajima volcano, Japan
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Characteristics of Seismic Wave Propagation of Harmonic Tremors Observed at the Margin in the Lützow-Holm Bay, East Antarctica

, 2017
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Cortical correlates of the basic and first harmonic frequency of Parkinsonian tremor [PDF]

Clinical Neurophysiology, 2009
It has been hypothesized that the basic and first harmonic frequency of Parkinsonian tremor are somewhat independent oscillations the biological basis of which remains unclear.We recorded 64-channel EEG in parallel with EMG of the forearm muscles most affected by rest tremor in 21 PD patients.
GÜNTHER Deuschl, Jens Volkmann, Jan Raethjen   +2 more
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Physical models for the source of Lascar's harmonic tremor

Journal of Volcanology and Geothermal Research, 2000
Abstract Over an 18 h interval in April 1994, the tremor at Lascar volcano, Chile, was characterized by a spectrum with narrow peaks at a fundamental freqency of about 0.63 Hz and more than 25 overtones at exact integer multiples. This harmonic tremor was recorded at four three-component, high-dynamic range stations during the deployment of the ...
M Hellweg
exaly   +2 more sources

The origin of harmonic tremor at Old Faithful geyser

Nature, 1996
Volcanic tremor, the seismic signal which is often associated with eruptions, is among the least understood phenomena in seismology. Large variations in the physical properties of volcanic rocks and fluids along with the complex geological structure make it difficult to obtain reliable source models.
Sharon Kedar, Hiroo Kanamori, Kanamori Hiroo   +2 more
exaly   +4 more sources

Characteristics of Current-Induced Harmonic Tremor Signals in Ocean-Bottom Seismometer Records

Seismological Research Letters, 2021
Abstract Long-lasting harmonic tremor signals are frequently observed in spectrograms of seismological data. Natural sources, such as volcanoes and icebergs, or artificial sources, such as ships and helicopters, produce very similar harmonic tremor episodes.
Vera Schlindwein, David Essing, Simon C Stähler   +2 more
exaly   +4 more sources