搜索结果: 16-30 共查到“理学 Sources”相关记录341条 . 查询时间(0.039 秒)
Towards new research strategies: silent seismogenic areas or silent sources?
Historical seismology paleoseismology Apennines
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2015/9/30
Some earthquakes, particularly the strongest ones, can re-occur within hundreds or thousands of years. Therefore, the areas whose "seismic history" seems to be totally lacking in information are indee...
From earthquake intensities to earthquake sources: extending the contribution of historical seismology to seismotectonic studies
Historical earthquakes source orientation seismotectonics seismic intensity
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2015/9/30
The epicentral locations and magnitudes of the events reported in the Catalogue of Strong Italian Earthquakes are obtained from intensity data through a standardized and established algorithm. However...
Convolutive Demixing with Sparse Discrete Prior Models for Markov Sources
Convolutive Demixing Sparse Discrete Prior Models Markov Sources
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2015/9/29
In this paper we present a new source separation method based on dynamic sparse source signal models. Source signals are modeled in frequency domain as a product of a Bernoulli selection variable with...
Estimator for Number of Sources using Minimum Description Length Criterion for Blind Sparse Source Mixtures
Minimum Description Length Criterion Blind Sparse Source Mixtures
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2015/9/29
In this paper I present a Minimum Description Length Estimator for number of sources in an anechoic mixture of sparse signals.The criterion is roughly equal to the sum of negative normalized maximum l...
Information Theory Based Estimator of the Number of Sources in a Sparse Linear Mixing Model
Information Theory Estimator of the Number of Sources Sparse Linear Mixing Model
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2015/9/29
In this paper we present an Information Theoretic Estimator for the number of sources mutuallydisjoint in a linear mixing model. The approach follows the Minimum Description Length prescription and is...
Evidence of historical seismicity and volcanism in the Armenian Highland (from Armenian and other sources)
historical seismicity volcanism catalogue
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2015/9/14
This work presents a summary on the development of studies of historical earthquakes in Armenia and adjacent parts of Turkey and Iran. Since ancient times, this region has been an arena where active g...
Implications of some early Jewish sources for estimates of earthquake hazardin the Holy Land
historical seismology paleoseismology Dead Sea Rift
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2015/9/14
For the past two millennia the Holy Land was under the yoke of successive invaders and oppressors, not a fertile ground for growth of historiographic traditions. Consequently, earthquake cataloguers h...
The study of local sources of ULF geoelectric signals with steep fronts
geoelectricity earthquakes prediction method VAN
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2015/9/14
The method for recognition and monitoring of ULF electrotelluric signals with steep fronts is presented. The method is based on the multicomponent measurements of the geoelectric field and recognition...
Numerical model of gas dispersion emitted from volcanic sources
gas dispersion volcanic gas K-theory computer model
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2015/9/10
An Eulerian model for passive gas dispersion based on the K-theory for turbulent diffusion, coupled with a mass
consistent wind model is presented. The procedure can be used to forecast gas concentra...
Seven missing damaging earthquakes in Upper Valtiberina (Central Italy) in 16th-18th century: research strategies and historical sources
missing earthquakes historical seismology Italian earthquake catalogues Upper Valtiberina
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2015/9/8
The Italian earthquake catalogue is considered to be fairly complete starting from the 17th century and for classes
of earthquakes of magnitude greater than 5.5. However, dedicated historical researc...
Gravity changes due to overpressure sources in 3D heterogeneous media: application to Campi Flegrei caldera, Italy
Campi Flegrei Deformation gravity finite element method heterogeneous medium
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2015/9/1
Employing 3D finite element method, we develop an algorithm to calculate gravity changes
due to pressurized sources of any shape in elastic and inelastic heterogeneous media. We
consider different s...
Gravity changes due to overpressure sources in 3D heterogeneous media: application to Campi Flegrei caldera, Italy
Campi Flegrei deformation gravity finite element method heterogeneous medium
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2015/9/1
Employing a 3D finite element method, we develop an algorithm to calculate gravity changes due to pressurized
sources of any shape in elastic and inelastic heterogeneous media. We consider different ...
Extended sources of the main events of the Umbria-Marche (1997) seismic sequence inverted from geophysical data
DInSAR GPS strong-motion teleseismic data seismic source
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2015/9/1
The three largest events of the 1997 Umbria-Marche (Italy) sequence occurred on September 26, 1997 at 00:33 GMT (Event 1, MW=5.7) and 09:40 GMT (Event 2, MW=6.0) in the Colfiorito area and on the Octo...
The Greek Database of Seismogenic Sources (GreDaSS): state-of-the-art for northern Greece
North Aegean seismotectonics earthquake geology active faults
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2015/8/26
The Greek Database of Seismogenic Sources (GreDaSS) is a repository of geological, tectonic and active-fault data for the Greek territory and its surroundings. In this report, we present the state-of-...
An ethical approach to socio-economic information sources in ongoing vulnerability and resilience studies: the Mount Cameroon case
Vulnerability Resilience Social recovery Mount Cameroon MIA-VITA Project
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2015/8/26
The study of the vulnerability of facing natural and man-made hazards, with the related resilient answers belong to the complex and articulate field of social sciences called ‘Disaster Anthropology’. ...