Continuous dynamic response along a pre-existing structural discontinuity induced by the 2001 eruption at Mt. Etna
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- Gambino Salvatore
- Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania
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説明
The intrusive process of the 2001 Mt. Etna eruption was accompanied by marked ground deformation and relevant seismic activity recorded between 12 and 17 of July (INGV-CT, 2001). At the same time, extensometer data evidenced the re-activation of a dry surface failure zone on the high south-eastern sector of Mt. Etna; this fracture system, formed in 1989, has been related to the propagation of a shallow blade-like dike along a NNESSW discontinuity (Bonaccorso and Davis, 1993; Bianco et al., 1998). The NNW-SSE discontinuity represents a complex low cohesion structure in which deformation may concentrate. Displacement measurements recorded on the surface fracture and the constraints obtained from seismicity show that the intrusion phase of the 2001 eruption has forced the NNE-SSW structure to move continuously with prevalent left-lateral displacement from a depth of 2-2.5 km b. s. l. to the surface with a compositive slip of about 3-5 centimeters.
収録刊行物
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- Earth, Planets and Space
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Earth, Planets and Space 56 (4), 447-456, 2004
地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会
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詳細情報 詳細情報について
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- CRID
- 1390282681489652096
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- NII論文ID
- 10017464206
- 130003781034
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- NII書誌ID
- AA11211921
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- ISSN
- 18805981
- 13438832
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- NDL書誌ID
- 6981585
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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