Study of seismic activity during the ascending and descending phases of solar activity

Sukma, Indriani; Abidin, Zainal

doi:10.1007/s12648-016-0943-5

Cited by 6 publications

(3 citation statements)

References 21 publications

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“…The 11-year solar cycle contributes to events such as sunspots, coronal mass ejection, and solar wind. The mechanism of the sun-earth magnetosphere connection is a mystery in relation to earthquakes [1]. Several studies have proposed that solar activity (SA) might be linked to earthquakes [2] [3] [4].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Relation between Solar Activity and Earthquakes with Deep Learning Method

Li¹,

Gu²,

Kikuyama³

et al. 2021

IJG

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Solar activity (SA) has been hypothesized to be a trigger of earthquakes, although it is not as intuitively associated as other potential triggers such as tidal stress, rainfall, and the building of artificial water reservoirs. Here, we investigate the relation between SA and global earthquake numbers (GEN) by using a deep learning method to test the hypothesis. We use the daily data of GEN and SA (1996/01/01-2019/12/31) to construct a temporal convolution network (TCN). From the computational results, we confirm that the TCN captures the relation between SA and earthquakes with magnitudes from 4.0 to 4.9. We also find that the TCN achieves better fitting and prediction performance compared with previous work.

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Section: Introductionmentioning

confidence: 99%

Investigation of Relation between Solar Activity and Earthquakes with Deep Learning Method

Li¹,

Gu²,

Kikuyama³

et al. 2021

IJG

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“…Most studies focus on the seismo-electromagnetic phenomena generated by underground activities before earthquakes or the perturbations in the atmosphere and the ionosphere, especially the ultra-low-frequency electromagnetic phenomena [ 14 , 15 , 16 ] and GPS total electron content changes [ 17 , 18 , 19 ]. In addition, some researchers studied the possible links among earthquakes, solar activity, and geomagnetic storms, and they revealed the seismicity of the earth may be related to the solar activity [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ]. For instance, the earthquakes tend to occur in greater numbers during the sunspot maximum and the descending phase of the solar cycle [ 23 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, some researchers studied the possible links among earthquakes, solar activity, and geomagnetic storms, and they revealed the seismicity of the earth may be related to the solar activity [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ]. For instance, the earthquakes tend to occur in greater numbers during the sunspot maximum and the descending phase of the solar cycle [ 23 , 25 ]. An increase in the Kp Index before large earthquakes is also reported [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

A Statistical Study of the Correlation between Geomagnetic Storms and M ≥ 7.0 Global Earthquakes during 1957–2020

Chen

Wang

Miao

et al. 2020

Entropy

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In order to find out whether the geomagnetic storms and large-mega earthquakes are correlated or not, statistical studies based on Superposed Epoch Analysis (SEA), significance analysis, and Z test have been applied to the Dst index data and M ≥ 7.0 global earthquakes during 1957–2020. The results indicate that before M ≥ 7.0 global earthquakes, there are clearly higher probabilities of geomagnetic storms than after them. Geomagnetic storms are more likely to be related with shallow earthquakes rather than deep ones. Further statistical investigations of the results based on cumulative storm hours show consistency with those based on storm days, suggesting that the high probability of geomagnetic storms prior to large-mega earthquakes is significant and robust. Some possible mechanisms such as a reverse piezoelectric effect and/or electroosmotic flow are discussed to explain the statistical correlation. The result might open new perspectives in the complex process of earthquakes and the Lithosphere-Atmosphere-Ionosphere (LAI) coupling.

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Investigation of Atmospheric Anomalies due to the Great Tohoku Earthquake Disturbance Using NRLMSISE-00 Atmospheric Model Measurement

Endeshaw

2024

Pure Appl. Geophys.

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In this study, the atmospheric changes for the 9.0-magnitude Tohoku earthquake, which occurred on March 11, 2011, are analyzed. The March 11, 2011 earthquake was preceded by a large foreshock on March 09, 2011 with magnitude M 7.3 and depth 32 km at 02:45:20 UT near the east coast of Honshu, Japan. The earthquake doesn’t limit its effects on the Earth’s lithosphere, hydrosphere and biosphere; it also extends its effects to the atmosphere because of the gas emissions, which produce large-scale seismic waves from the ground and release gases into the atmosphere. In this study, the anomalies of the atmospheric parameters are studied by using one of the atmospheric models from the Naval Research Laboratory Mass Spectrometer Incoherent Scatter Extension 2000 (NRLMSISE-00) model data to analyze the atmospheric anomalies of the Tohoku Earthquake on March 11, 2011. The atmospheric parameters of atomic oxygen (O), hydrogen (H), atomic nitrogen (N), helium (He), argon (Ar), molecular oxygen (O2), molecular nitrogen (N2), total mass density (ρ), neutral temperature (Tn), exospheric temperature (Tex) and anomalous oxygen (AO) are used for analysis during the earthquake occurrence. The epicenter of the Tohoku earthquake, with a geographical location of latitude 38.30° N and longitude 142.37° E, is used for the NRLMSISE-00 model as input parameters to analyze the output of atmospheric parameters. To compare the atmospheric changes caused by the earthquake, 5 days before and after the earthquake are considered. To detect where the atmospheric parameters increased or decreased from the earthquake day, the percentage deviation of the NRLMSISE-00 model is applied. The results indicate that there were atmospheric parameter anomalies that occurred a few days before, following and during the earthquake on March 11, 2011. Except for hydrogen (H), all atmospheric parameters average daily percentage deviation values were positive during the 5 days before and after with respect to the main earthquake shock on March 11, 2011. The NRLMSISE-00 model can capture the atmospheric parameter anomalies of the Tohoku earthquake well.

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Study of seismic activity during the ascending and descending phases of solar activity

Cited by 6 publications

References 21 publications

Investigation of Relation between Solar Activity and Earthquakes with Deep Learning Method

Investigation of Relation between Solar Activity and Earthquakes with Deep Learning Method

A Statistical Study of the Correlation between Geomagnetic Storms and M ≥ 7.0 Global Earthquakes during 1957–2020

Investigation of Atmospheric Anomalies due to the Great Tohoku Earthquake Disturbance Using NRLMSISE-00 Atmospheric Model Measurement

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