The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakes
Several methods are presently suggested for investigating pre-earthquake evolution of the regions of high tectonic activity based on analysis of the seismicity spatial distribution. Some precursor signatures are detected before strong earthquakes: decrease in fractal dimension of the continuum...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2001-01-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/1/145/2001/nhess-1-145-2001.pdf |
| _version_ | 1818056706260729856 |
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| author | D. Kiyashchenko V. Troyan |
| author_facet | D. Kiyashchenko V. Troyan |
| author_sort | D. Kiyashchenko |
| collection | DOAJ |
| description | Several methods are presently suggested for investigating pre-earthquake evolution of the regions of high tectonic activity based on analysis of the seismicity spatial distribution. Some precursor signatures are detected before strong earthquakes: decrease in fractal dimension of the continuum of earthquake epicenters, cluster formation, concentration of seismic events near one of the nodal planes of the future earthquake, and others. In the present paper, it is shown that such peculiarities are typical of the evolution of the shear crack network under external stresses in elastic bodies with inhomogeneous distribution of strength. The results of computer modeling of crack network evolution are presented. It is shown that variations of the fractal dimension of the earthquake epicenters’ continuum and other precursor signatures contain information about the evolution of the destruction process towards the main rupture. |
| first_indexed | 2024-12-10T12:33:06Z |
| format | Article |
| id | doaj.art-4286282dae5a4497bb8f3ccf275ad983 |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-12-10T12:33:06Z |
| publishDate | 2001-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-4286282dae5a4497bb8f3ccf275ad9832022-12-22T01:48:44ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812001-01-0113145158The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakesD. KiyashchenkoV. TroyanSeveral methods are presently suggested for investigating pre-earthquake evolution of the regions of high tectonic activity based on analysis of the seismicity spatial distribution. Some precursor signatures are detected before strong earthquakes: decrease in fractal dimension of the continuum of earthquake epicenters, cluster formation, concentration of seismic events near one of the nodal planes of the future earthquake, and others. In the present paper, it is shown that such peculiarities are typical of the evolution of the shear crack network under external stresses in elastic bodies with inhomogeneous distribution of strength. The results of computer modeling of crack network evolution are presented. It is shown that variations of the fractal dimension of the earthquake epicenters’ continuum and other precursor signatures contain information about the evolution of the destruction process towards the main rupture.http://www.nat-hazards-earth-syst-sci.net/1/145/2001/nhess-1-145-2001.pdf |
| spellingShingle | D. Kiyashchenko V. Troyan The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakes Natural Hazards and Earth System Sciences |
| title | The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakes |
| title_full | The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakes |
| title_fullStr | The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakes |
| title_full_unstemmed | The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakes |
| title_short | The pecularities of shear crack pre-rupture evolution and distribution of seismicity before strong earthquakes |
| title_sort | pecularities of shear crack pre rupture evolution and distribution of seismicity before strong earthquakes |
| url | http://www.nat-hazards-earth-syst-sci.net/1/145/2001/nhess-1-145-2001.pdf |
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