scholarly journals Magnetospheric-Ionospheric-Lithospheric coupling model. Observations  during the August 5, 2018 Bayan Earthquake

2021 ◽  
Author(s):  
Mirko Piersanti ◽  
Massimo Materassi ◽  
Roberto Battiston ◽  
Vincenzo Carbone ◽  
Antonio Cicone ◽  
...  
Keyword(s):  
Human Life ◽  
Coupling Model ◽  
Lower Atmosphere ◽  
Quality Data ◽  
Atmospheric Gravity Wave ◽  
Instrumental Approach ◽  
The Moment ◽  
Short Term Prediction ◽  
Atmospheric Gravity ◽  
Quantitative Indicators

<p>The short-term prediction of earthquakes is an essential issue connected with human life protection and related social and economics matter. Recent papers have provided some evidence of the link between the lithosphere, lower atmosphere, and ionosphere, even though with marginal statistical evidence. The basic coupling hypothesized being via atmospheric gravity wave (AGW)/acoustic wave (AW) channel. In this work we analyse the scenario of the low latitude earthquake (Mw=6.9) occurred in Indonesia on August 5, 2018, through a multi-instrumental approach, using ground and satellites high quality data. As a result, we derive a new analytical lithospheric-atmospheric-ionospheric-magnetospheric coupling model with the aim to provide quantitative indicators to interpret the observations around 6 hours before and at the moment of the earthquake occurrence.</p>

scholarly journals Magnetospheric–Ionospheric–Lithospheric Coupling Model. 1: Observations during the 5 August 2018 Bayan Earthquake

2020 ◽  
Vol 12 (20) ◽  
pp. 3299 ◽  
Author(s):  
Mirko Piersanti ◽  
Massimo Materassi ◽  
Roberto Battiston ◽  
Vincenzo Carbone ◽  
Antonio Cicone ◽  
...  
Keyword(s):  
Human Life ◽  
Coupling Model ◽  
Lower Atmosphere ◽  
Quality Data ◽  
Atmospheric Gravity Wave ◽  
Instrumental Approach ◽  
The Moment ◽  
Short Term Prediction ◽  
Atmospheric Gravity ◽  
Quantitative Indicators

The short-term prediction of earthquakes is an essential issue connected with human life protection and related social and economic matters. Recent papers have provided some evidence of the link between the lithosphere, lower atmosphere, and ionosphere, even though with marginal statistical evidence. The basic coupling is hypothesized as being via the atmospheric gravity wave (AGW)/acoustic wave (AW) channel. In this paper we analyze a scenario of the low latitude earthquake (Mw = 6.9) which occurred in Indonesia on 5 August 2018, through a multi-instrumental approach, using ground and satellites high quality data. As a result, we derive a new analytical lithospheric–atmospheric–ionospheric–magnetospheric coupling model with the aim to provide quantitative indicators to interpret the observations around 6 h before and at the moment of the earthquake occurrence.

scholarly journals Studies on atmospheric gravity wave activity in the troposphere and lower stratosphere over a tropical station at Gadanki

2005 ◽  
Vol 23 (10) ◽  
pp. 3237-3260 ◽  
Author(s):  
I. V. Subba Reddy ◽  
D. Narayana Rao ◽  
A. Narendra Babu ◽  
M. Venkat Ratnam ◽  
P. Kishore ◽  
...  
Keyword(s):  
Gravity Wave ◽  
Gravity Waves ◽  
Lower Stratosphere ◽  
Wave Length ◽  
Wave Activity ◽  
Lower Atmosphere ◽  
Wind Fields ◽  
Atmospheric Gravity Wave ◽  
Short Period ◽  
Atmospheric Gravity

Abstract. MST radars are powerful tools to study the mesosphere, stratosphere and troposphere and have made considerable contributions to the studies of the dynamics of the upper, middle and lower atmosphere. Atmospheric gravity waves play a significant role in controlling middle and upper atmospheric dynamics. To date, frontal systems, convection, wind shear and topography have been thought to be the sources of gravity waves in the troposphere. All these studies pointed out that it is very essential to understand the generation, propagation and climatology of gravity waves. In this regard, several campaigns using Indian MST Radar observations have been carried out to explore the gravity wave activity over Gadanki in the troposphere and the lower stratosphere. The signatures of the gravity waves in the wind fields have been studied in four seasons viz., summer, monsoon, post-monsoon and winter. The large wind fluctuations were more prominent above 10 km during the summer and monsoon seasons. The wave periods are ranging from 10 min-175 min. The power spectral densities of gravity waves are found to be maximum in the stratospheric region. The vertical wavelength and the propagation direction of gravity waves were determined using hodograph analysis. The results show both down ward and upward propagating waves with a maximum vertical wave length of 3.3 km. The gravity wave associated momentum fluxes show that long period gravity waves carry more momentum flux than the short period waves and this is presented.

Atmospheric gravity wave production for the solar eclipse of October 23, 1976

Nature ◽  
1976 ◽  
Vol 264 (5585) ◽  
pp. 420-421 ◽  
Author(s):  
TOM BEER ◽  
G. L. GOODWIN ◽  
G. J. HOBSON
Keyword(s):  
Gravity Wave ◽  
Solar Eclipse ◽  
Atmospheric Gravity Wave ◽  
Atmospheric Gravity

Calculating Atmospheric Gravity Wave Parameters from Infrasound Measurements

2018 ◽  
pp. 701-719 ◽  
Author(s):  
Graeme Marlton ◽  
Andrew Charlton-Perez ◽  
Giles Harrison ◽  
Christopher Lee
Keyword(s):  
Gravity Wave ◽  
Atmospheric Gravity Wave ◽  
Wave Parameters ◽  
Atmospheric Gravity

scholarly journals Changes in the ultra-low frequency wave field during the precursor phase to the Sichuan earthquake: DEMETER observations

2013 ◽  
Vol 31 (9) ◽  
pp. 1597-1603 ◽  
Author(s):  
S. N. Walker ◽  
V. Kadirkamanathan ◽  
O. A. Pokhotelov
Keyword(s):  
Low Frequency ◽  
Large Earthquake ◽  
Short Term ◽  
Frequency Wave ◽  
Sichuan Earthquake ◽  
Ulf Wave ◽  
Precursor Phase ◽  
Demeter Satellite ◽  
Short Term Prediction ◽  
Atmospheric Gravity

Abstract. Electromagnetic phenomena observed in association with increases in seismic activity have been studied for several decades. These phenomena are generated during the precursory phases of an earthquake as well as during the main event. Their occurrence during the precursory phases may be used in short-term prediction of a large earthquake. In this paper, we examine ultra-low frequency (ULF) electric field data from the DEMETER satellite during the period leading up to the Sichuan earthquake. It is shown that there is an increase in ULF wave activity observed as DEMETER passes in the vicinity of the earthquake epicentre. This increase is most obvious at lower frequencies. Examination of the ULF spectra shows the possible occurrence of geomagnetic pearl pulsations, resulting from the passage of atmospheric gravity waves generated in the vicinity of the earthquake epicentre.

scholarly journals Spectral variability in high frequency in sea level and atmospheric pressure on Buenos Aires Coast, Argentina

2017 ◽  
Vol 65 (1) ◽  
pp. 69-78 ◽  
Author(s):  
Iael Perez ◽  
Dragani Walter
Keyword(s):  
Gravity Waves ◽  
Atmospheric Pressure ◽  
Buenos Aires ◽  
Numerical Models ◽  
Spectral Energy ◽  
Spectral Variability ◽  
Atmospheric Gravity Wave ◽  
Atmospheric Gravity Waves ◽  
Atmospheric Gravity ◽  
Low Activity

Abstract There are some observational evidences which support that atmospheric gravity waves constitute an efficient forcing for meteorological tsunamis (meteotsunamis) along the coast of Buenos Aires, Argentina. Meteotsunamis and atmospheric gravity waves, which propagate simultaneously on the sea surface and the atmosphere, respectively, are typical examples of non-stationary geophysical signals. The variability of meteotsunamis and atmospheric gravity waves recorded at Mar del Plata was investigated in this paper. Results obtained in this work reinforce the idea of a cause (atmospheric gravity waves) effect (meteotsunami) relationship, because wavelet spectra obtained from both signals resulted quite similar. However, several very short episodes of mod-erate/low activity of atmospheric gravity waves were detected without detecting meteotsunami activity. On the other hand, it was found that atmospheric gravity wave spectral energy can appear in the wavelets as a single or multiple burst as relatively long and irregular events or as regular wave packets. Results obtained in this paper provide original spectral data about atmospheric gravity waves along the coast of Buenos Aires. This information is useful to be included in realistic numerical models in order to investigate the genesis of this complex atmosphere-ocean interaction.

scholarly journals QUALIFICATION OF CRIMES AGAINST LIFE: COMPARATIVE LEGAL ANALYSIS

2021 ◽  
Vol 1 (1) ◽  
pp. 61-67
Author(s):  
Olha Peresada ◽  
Keyword(s):  
Public Relations ◽  
Criminal Law ◽  
Human Life ◽  
Criminal Code ◽  
Legal Analysis ◽  
Right To Life ◽  
Special Part ◽  
Criminal Protection ◽  
The Moment ◽  
The Right

The article considers topical issues of definition and qualification of crimes against human life in Ukraine and abroad. It is proved that the problematic issue of criminal law protection of human life is a significant differentiation of approaches to determining the moment of its onset, which reflects the medical and social criteria for the formation of an individual who has the right to life. It is shown that Ukrainian criminal law gives a person the right to life from birth, while the correct approach is to recognize the beginning of human life and appropriate criminal protection from the moment of onset 10 days after conception, which is consistent with European experience (in particular, France) and sufficiently reflects the medical features of the period of formation of a full-fledged embryo. The article also addresses the issue of the fact that Section II of the Special Part of the Criminal Code of Ukraine combines encroachment on two different generic objects - public relations for the protection of life and public relations for the protection of personal health. This provision of the criminal law of Ukraine does not correspond to the international practice on this issue. In addition, it is reasonable to believe that the two relevant categories of the object of criminal encroachment cannot be considered similar, as such an approach in certain cases can significantly complicate the classification of a criminal offense. It is emphasized that, given the exceptional importance of criminal law protection of human life, it is necessary to formulate a separate section of the Special Part of the Criminal Code of Ukraine, which covers only crimes against life as the main object of criminal encroachment.

Sign in / Sign up

Export Citation Format

Share Document