搜索结果: 1-11 共查到“地球科学总论 precursors”相关记录11条 . 查询时间(0.109 秒)
Are any public-reported earthquake precursors valid?
public-reported earthquake precursors valid
2009/12/14
This article examines retrospective public-supplied precursor reports statistically, and confirms published hypotheses that some alleged precursors within 100km and within a day prior to the large 199...
Correlation analysis technique revealing ionospheric precursors of earthquakes
correlation analysis technique ionospheric precursors earthquakes
2009/12/14
In this paper we focus on the variability of electron concentration in the ionosphere measured by ground based ionosondes and GPS receivers around the time of strong earthquakes. It has been detected ...
A neuro-fuzzy approach to the reliable recognition of electric earthquake precursors
A neuro-fuzzy approach the reliable recognition electric earthquake precursors
2009/12/14
Electric Earthquake Precursor (EEP) recognition is essentially a problem of weak signal detection. An EEP signal, according to the theory of propagating cracks, is usually a very weak electric potenti...
Experience of short term earthquake precursors with VLF–VHF electromagnetic emissions
short term earthquake precursors VLF–VHF electromagnetic emissions
2009/12/11
Electromagnetic anomalies (EMA) covering a wide range of frequencies from ULF, VLF up to VHF have been observed before recent destructive earthquakes in continental Greece. We show that the features o...
Relatively small earthquakes of Javakheti Highland as the precursors of large earthquakes occuring in the Caucasus
small earthquakes Javakheti Highland precursors large earthquakes Caucasus
2009/12/11
Javakheti Highland is one of the most seismic active regions of the Caucasus. The majority of earthquakes observed throughout the region occur within this small area (f = 40.8° – 41.8° ; l = 43.3° – 4...
Search for earthquake precursors in multidisciplinary data monitoring of geophysical and biological parameters
earthquake precursors multidisciplinary data monitoring geophysical and biological parameters
2009/12/11
Short-term variations in sets of geophysical and biological parameters that were monitored at the Garm research site for a long time are considered in relation to an earthquake of magnitude M = 5.3. D...
Possible earthquake precursors revealed by LF radio signals
Possible earthquake precursors LF radio signals
2009/12/9
In this case, it is possible that the pre-seismic processes could have produced irregularities in the troposphere, such as ducts, reflecting layers and scattering zones, so that some local troposphere...
Hydrogeochemical precursors of strong earthquakes in Kamchatka: further analysis
Hydrogeochemical precursors strong earthquakes Kamchatka further analysis
2009/12/9
In this paper, we allow for the cross-correlation found between the gas data sets and in some cases, between the ion data sets. No cross-correlation has been found between gas and ion content data. An...
Detection of hydrogeochemical seismic precursors by a statistical learning model
Detection hydrogeochemical seismic precursors statistical learning model
2010/1/4
The problem of detecting the occurrence of an earthquake precursor is faced in the general framework of the statistical learning theory. The aim of this work is both to build models able to detect sei...
Electrical precursors of earthquakes in Aegean Sea during the last decade (1997–2007)
Electrical precursors Aegean Sea the last decade (1997–2007)
2009/12/29
The purpose of this study is to investigate some properties of the Seismic Electric Signals (SES) that preceded large earthquakes which occurred in the Aegean Sea (24–27)° E, (37–40)° N, during the la...
Retrospective analysis for detecting seismic precursors in groundwater argon content
Retrospective analysis seismic precursors groundwater argon content
2009/12/16
We examined the groundwater Argon content data sampled from 1988 to 2001 at two wells in Kamchatka (Russia) and anomalous increases appeared clearly during June-July 1996. On 21 June, a shallow (1km) ...