Investigating non-uniform scaling behaviour in temporal fluctuations of seismicity
Scaling behaviour in nonstationary time series can be successfully detected using the detrended fluctuation analysis (DFA). Observational time series often do not show a stable and uniform scaling behaviour, given by the presence of a unique clear scaling region. The deviations from uniform power-la...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2008-09-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/8/973/2008/nhess-8-973-2008.pdf |
| _version_ | 1818938619213119488 |
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| author | L. Telesca M. Lovallo |
| author_facet | L. Telesca M. Lovallo |
| author_sort | L. Telesca |
| collection | DOAJ |
| description | Scaling behaviour in nonstationary time series can be successfully detected using the detrended fluctuation analysis (DFA). Observational time series often do not show a stable and uniform scaling behaviour, given by the presence of a unique clear scaling region. The deviations from uniform power-law scaling, which suggest the presence of changing dynamics in the system under study, can be identified and quantified using an appropriate instability index. In this framework, the scaling behaviour of the 1981–2007 seismicity in Umbria-Marche (central Italy), which is one of the most seismically active areas in Italy, was investigated. Significant deviations from uniform power-law scaling in the seismic temporal fluctuations were revealed mostly linked with the occurrence of rather large earthquakes or seismic clusters. |
| first_indexed | 2024-12-20T06:10:44Z |
| format | Article |
| id | doaj.art-36a6d3dca35e4bc6911bc767ec50d470 |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-12-20T06:10:44Z |
| publishDate | 2008-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-36a6d3dca35e4bc6911bc767ec50d4702022-12-21T19:50:42ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812008-09-0185973976Investigating non-uniform scaling behaviour in temporal fluctuations of seismicityL. TelescaM. LovalloScaling behaviour in nonstationary time series can be successfully detected using the detrended fluctuation analysis (DFA). Observational time series often do not show a stable and uniform scaling behaviour, given by the presence of a unique clear scaling region. The deviations from uniform power-law scaling, which suggest the presence of changing dynamics in the system under study, can be identified and quantified using an appropriate instability index. In this framework, the scaling behaviour of the 1981–2007 seismicity in Umbria-Marche (central Italy), which is one of the most seismically active areas in Italy, was investigated. Significant deviations from uniform power-law scaling in the seismic temporal fluctuations were revealed mostly linked with the occurrence of rather large earthquakes or seismic clusters.http://www.nat-hazards-earth-syst-sci.net/8/973/2008/nhess-8-973-2008.pdf |
| spellingShingle | L. Telesca M. Lovallo Investigating non-uniform scaling behaviour in temporal fluctuations of seismicity Natural Hazards and Earth System Sciences |
| title | Investigating non-uniform scaling behaviour in temporal fluctuations of seismicity |
| title_full | Investigating non-uniform scaling behaviour in temporal fluctuations of seismicity |
| title_fullStr | Investigating non-uniform scaling behaviour in temporal fluctuations of seismicity |
| title_full_unstemmed | Investigating non-uniform scaling behaviour in temporal fluctuations of seismicity |
| title_short | Investigating non-uniform scaling behaviour in temporal fluctuations of seismicity |
| title_sort | investigating non uniform scaling behaviour in temporal fluctuations of seismicity |
| url | http://www.nat-hazards-earth-syst-sci.net/8/973/2008/nhess-8-973-2008.pdf |
| work_keys_str_mv | AT ltelesca investigatingnonuniformscalingbehaviourintemporalfluctuationsofseismicity AT mlovallo investigatingnonuniformscalingbehaviourintemporalfluctuationsofseismicity |