Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2311
DC Field | Value | Language |
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dc.contributor.authorall | Scalera, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.date.accessioned | 2007-07-21T05:35:30Z | en |
dc.date.available | 2007-07-21T05:35:30Z | en |
dc.date.issued | 2007-03 | en |
dc.identifier.uri | http://hdl.handle.net/2122/2311 | en |
dc.description.abstract | The displacement of the Earth’s instantaneous rotation pole – observed at ASI of Matera, Italy – the seismic data (USGS) in the two days following the main shock, the high frequency P-wave radiation, the geomorphologic data, and the satellite data of uplift/subsidence of the coasts (IGG) converge toward a new interpretation of the Great Sumatran earthquake (TU=26 December 2004 - 00h 58m, Lat=3.3°N, Lon=95.8°E, H=10 km, M=9.3) based on the second conjugate – nearly vertical – CMT fault plane solution. In a non-double-couple treatment that considers non-negligible non-elastic contributions to the earthquake phenomena, only a nearly vertical fault can explain both high values of seismic moment and the ≈3.0 mas (≈10 cm) polhody displacement toward an azimuth exactly opposite to the epicentre azimuth. Case-histories of great earthquakes are then reviewed to highlight the overall analogies. The similarity of the vertical displacements shown by these earthquakes (Chile 1960, Alaska 1964, …) leads to a common interpretation necessitating resort to a prevailing uprising of lithospheric material. This interpretation is supported by the inspection of the irregularities of the hypocentre distribution along the Wadati-Benioff zones. Moreover, in the case of great South American earthquakes, a volcanic eruptions-earthquakes correlation is clearly recognisable. A thorough revision of the pure elastic rebound model of great earthquakes occurrence and a complete overcoming of the large scale subduction concept is then needed. | en |
dc.language.iso | English | en |
dc.publisher.name | University of Mexico | en |
dc.relation.ispartof | Geofisica Internacional | en |
dc.relation.ispartofseries | 1/46 (2007) | en |
dc.subject | Geodynamics | en |
dc.subject | Polar Motion | en |
dc.subject | Great Earthquakes | en |
dc.subject | Volcanic eruptions | en |
dc.subject | Expanding Earth | en |
dc.title | Geodynamics of tha Wadati-Benioff zone earthquakes: The 2004 Sumatra earthquake and other great earthquakes | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 19-50 | en |
dc.identifier.URL | http://www.igeofcu.unam.mx/divulgacion/geofinter/2007/01/scalera.pdf | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.02. Geological and geophysical evidences of deep processes | en |
dc.description.obiettivoSpecifico | 3.3. Geodinamica e struttura dell'interno della Terra | en |
dc.description.journalType | N/A or not JCR | en |
dc.description.fulltext | open | en |
dc.contributor.author | Scalera, G. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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File | Description | Size | Format | |
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LOW_RES_.PDF | Main article | 3.98 MB | Adobe PDF | View/Open |
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