Geodynamic implications of earthquake data in the southern Tyrrhenian sea

Neri, G.; Caccamo, D.; Cocina, O.; Montalto, A.

doi:10.1016/0040-1951(95)00202-2

Cited by 55 publications

(36 citation statements)

References 39 publications

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“…The earthquake fault plane solutions with errors on fault parameters less than 20°a vailable for sector S are also plotted, with the corresponding focal data listed in Table 1. northeastern Sicily during the period of analysis (1978 -2002). The M = 5.5 earthquake of 15 April 1978 (i.e., datum 1 in Table 1 and fault plane solution 1 in Figure 9) represents the seismic event with the highest magnitude during 1978 -2002 [Neri et al, 1996]. We recognized a high concentration of seismic events in the central part of the map (sector S in Figure 9), which includes the northern sector of the Tindari-Barcellona tectonic depression and its offshore area.…”

Section: Earthquake Datamentioning

confidence: 97%

“…Published age constraints allow only to date the fault activity as young as middle-upper Pleistocene in the Tindari area [Ghisetti, 1979;Catalano and Cinque, 1995;Catalano and Di Stefano, 1997], and as young as 50-25 kyr B.P. at Vulcano Island [Voltaggio et al, 1997]; however, this fault system is ongoing seismically active in the northern sector, with earthquakes since 1978 characterized by both extensional and strike-slip fault plane solutions, and by magnitudes 5.5 [Neri et al, 1996]. In particular, the offshore region that includes the Tindari Fault System has been the area of the greatest earthquake activity in the last decades along the Calabro-Sicilian portion of the Tyrrhenian margin [Neri et al, 2003].…”

Section: Introductionmentioning

confidence: 99%

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Tectonics and seismicity of the Tindari Fault System, southern Italy: Crustal deformations at the transition between ongoing contractional and extensional domains located above the edge of a subducting slab

et al. 2006

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The Tindari Fault System (southern Tyrrhenian Sea, Italy) is a regional zone of brittle deformation located at the transition between ongoing contractional and extensional crustal compartments and lying above the western edge of a narrow subducting slab. Onshore structural data, an offshore seismic reflection profile, and earthquake data are analyzed to constrain the present geometry of the Tindari Fault System and its tectonic evolution since Neogene, including the present seismicity. Results show that this zone of deformation consists of a broad NNW trending system of faults including sets of right‐lateral, left‐lateral, and extensional faults as well as early strike‐slip faults reworked under late extension. Earthquakes and other neotectonic data provide evidence that the Tindari Fault System is still active in the central and northern sectors and mostly accommodates extensional or right‐lateral transtensional displacements on a diffuse array of faults. From these data, a multiphase tectonic history is inferred, including an early phase as a right‐lateral strike‐slip fault and a late extensional reworking under the influence of the subduction‐related processes, which have led to the formation of the Tyrrhenian back‐arc basin. Within the present, regional, geodynamic context, the Tindari Fault System is interpreted as an ongoing accommodation zone between the adjacent contractional and extensional crustal compartments, these tectonic compartments relating to the complex processes of plate convergence occurring in the region. The Tindari Fault System might also be included in an incipient, oblique‐extensional, transfer zone linking the ongoing contractional belts in the Calabrian‐Ionian and southern Tyrrhenian compartments.

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Section: Earthquake Datamentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Tectonics and seismicity of the Tindari Fault System, southern Italy: Crustal deformations at the transition between ongoing contractional and extensional domains located above the edge of a subducting slab

et al. 2006

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“…This event can be associated with the Tindari-Giardini fault system, which caused the 1978 earthquake, with its epicenter in the Patti Gulf (I 0 ϭ IX MCS and M aw ϭ 6.06), and the 1980 earthquake, with its epicenter in the Tyrrhenian Sea (M aw ϭ 5.71). This fault system is seismically active in its northern portion, with earthquakes characterized by extensional and strike-slip fault-plane solution, and by M Ն 5.5 (Neri et al, 1996(Neri et al, , 2003. However, the state of knowledge allows us only to hypothesize which causative seismogenetic structures would have produced such a style of collapse.…”

Section: Discussionmentioning

confidence: 99%

Archaeological evidence for destructive earthquakes in Sicily between 400 B.C. and A.D. 600

2009

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A systematic archaeoseismological study indicates that at least three earthquakes occurred between 400 B.C. and A.D. 600, causing destruction to numerous ancient monuments in Sicily. Evidence for these earthquakes comes from the collapse style of buildings (toppled walls, column drums in a domino‐style arrangement, directional collapses, etc.), and the exclusion of other likely causes for such effects. Dating of inferred earthquakes is based on coins (accurate to within 5–10 years), pottery (accurate to within 50–200 years), and other artifacts. The oldest documented earthquake occurred between 370 and 300 B.C. and caused the collapse of two Greek temples in Selinunte. This otherwise poorly documented event was probably also the cause of extensive destruction in northeastern Sicily in the first century A.D. Destruction of some sites may be assigned to an earthquake that occurred between 360 and 374 and correlates with the A.D. 365 seismic sequence known from historical sources. This study covers a wider region and provides a more precise dating of earthquakes than previous studies. Although it focuses on a certain period (4th–3rd centuries B.C., 4th–7th centuries A.D.), it indicates that the period before A.D. 1000 is not a period of seismic quiescence in Sicily as was previously believed, but to a period characterized by strong and destructive earthquakes. © 2009 Wiley Periodicals, Inc.

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“…Besides the interest in understanding the regional geodynamic processes (ANDERSON and JACKSON, 1987;LUONGO et al, 1991;MILANO et al, 1994;NERI et al, 1996;BASSI et al, 1997), there is a fundamental interest in evaluating seismic risk. Recently, the seismicity observed in the Southern Tyrrhenian basin has been shown to follow fractal laws in its five dimensional data set (magnitude, time and space) (LUONGO and MAZ- ZARELLA, 1997).…”

Section: Introductionmentioning

confidence: 99%

The Seismicity in the Southern Tyrrhenian Area and its Neural Forecasting

Falco

Iazzetta

Luongo

et al. 2000

Pure and Applied Geophysics

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The Southern Tyrrhenian basin is a region characterized by complex tectonics and large-scale geodynamic deformations, and its seismicity has been recently recognized as following fractal laws in its five dimensional set (magnitude, time and space). In particular, the time occurrences of earthquakes are found to follow a significant fractal clustering within the interval ranging from 16 minutes to 24 hours; for longer intervals, the time clustering regime was not significantly different from that of a random process. An artificial neural network is applied here to the same seismicity data set and further evidence of the nonlinear dynamic process, for which the fractal approach failed, is obtained. The monthly values of magnitude predicted by extrapolation are found to be in fair agreement with the historical data.

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Geodynamic implications of earthquake data in the southern Tyrrhenian sea

Cited by 55 publications

References 39 publications

Tectonics and seismicity of the Tindari Fault System, southern Italy: Crustal deformations at the transition between ongoing contractional and extensional domains located above the edge of a subducting slab

Tectonics and seismicity of the Tindari Fault System, southern Italy: Crustal deformations at the transition between ongoing contractional and extensional domains located above the edge of a subducting slab

Archaeological evidence for destructive earthquakes in Sicily between 400 B.C. and A.D. 600

The Seismicity in the Southern Tyrrhenian Area and its Neural Forecasting

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