Results 1 to 10 of about 18,474 (268)

Effectiveness Criteria for Methods of Identifying Ionospheric Earthquake Precursors by Parameters of a Sporadic E Layer and Regular F2 Layer [PDF]

Journal of Astronomy and Space Sciences, 2015
The results of the study of ionospheric variations in the summer months of 1998-2002 at an ionospheric station of vertical sounding "Petropavlovsk-Kamchatsky" are presented.
Lidiya P. Korsunova, Valery V. Hegai
doaj   +3 more sources

Deep Machine Learning Based Possible Atmospheric and Ionospheric Precursors of the 2021 Mw 7.1 Japan Earthquake

Remote Sensing, 2023
Global Navigation Satellite System (GNSS)- and Remote Sensing (RS)-based Earth observations have a significant approach on the monitoring of natural disasters. Since the evolution and appearance of earthquake precursors exhibit complex behavior, the need
Muhammad Umar Draz, Munawar Shah, Punyawi Jamjareegulgarn, Rasim Shahzad, Ahmad M. Hasan, Nivin A. Ghamry   +5 more
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Spatiotemporal evolution of crustal strains preceding destructive earthquakes using GNSS [PDF]

Scientific Reports
The effective detection of earthquake precursors is pivotal for mitigating the hazards of earthquakes. However, its feasibility has been controversial for decades and remains unanswered.
Makoto Kamiyama, Atsushi Mikami, Yasuji Sawada, Hiroshi Akita   +3 more
doaj   +2 more sources

A Critical Review of Ground Based Observations of Earthquake Precursors

Frontiers in Earth Science, 2021
We aim at giving a short review of the seismo-associated phenomena detected on ground that in recent years have been investigated as possible earthquake precursors.
Livio Conti, Livio Conti, Piergiorgio Picozza, Piergiorgio Picozza, Piergiorgio Picozza, Alessandro Sotgiu, Alessandro Sotgiu   +6 more
doaj   +3 more sources

Regional Seismic Information Entropy to Detect Earthquake Activation Precursors

Entropy, 2018
A method is presented to detect earthquake precursors from time series data on earthquakes in a target region. The Regional Entropy of Seismic Information (RESI) is an index that represents the average influence of an earthquake in a target region on the
Yukio Ohsawa
doaj   +3 more sources

On the existence of earthquake precursors

Annals of Geophysics, 1999
Earthquake prediction based on precursors can aim to provide fully quantified, time-varying, synoptic forecasts, which do not depart from physical and geological principles, and are amenable to formal testing.
F. Evison
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A review on precursors of the 1999 Mw7.6 Chi-Chi, Taiwan, earthquake

Terrestrial, Atmospheric and Oceanic Sciences, 2021
Earthquake prediction has been a long-term debatable problem in earthquake science. There were numerous studies of possible precursors after the Mw 7.6 Chi-Chi, Taiwan, earthquake of 20 September 1999.
Jeen-Hwa Wang
doaj   +1 more source

Investigating short-term earthquake precursors detection through monitoring of total electron content variation in ionosphere

Frontiers in Astronomy and Space Sciences, 2023
The effectiveness and accuracy of earthquake precursors are measured by the ability of the precursors to predict the time, epicentral distance, and magnitude of the earthquake for short-term earthquake prediction.
Nur Fatin Irdina Zulhamidi, Mardina Abdullah, Mardina Abdullah, Nurul Shazana Abdul Hamid, Nurul Shazana Abdul Hamid, Khairul Adib Yusof, Khairul Adib Yusof, Siti Aminah Bahari   +7 more
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Geological and Geophysical Factors Constraining the Occurrence of Earthquake Precursors in Geofluids: A Review and Reinterpretation

Frontiers in Earth Science, 2020
In this paper, we update the previous compilations of observed earthquake precursors from the published scientific literature of the last decade. We collected the epicentral coordinates, magnitude, hypocentral depth of each earthquake and the distance ...
Giovanni Martinelli, Giovanni Martinelli, Giovanni Martinelli, Giancarlo Tamburello   +3 more
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FUSION OF MULTI PRECURSORS EARTHQUAKE PARAMETERS TO ESTIMATE THE DATE, MAGNITUDE AND AFFECTED AREA OF THE FORTHCOMING POWERFUL EARTHQUAKES [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
Since not any individual precursor can be used as an accurate stand alone means for the earthquake prediction, it is necessary to integrate different kinds of precursors. The precursors selected for analysis in this study include electron and ion density,
M. Akhoondzadeh, M. R. Saradjian
doaj   +1 more source