Violante, Crescenzo (2003) Submerged hummocky topographies and relations with landslides on the northwestern flank of Ischia island, southern Italy. In: International conference on ‘Occurrence and mechanisms of flow-like landslides in natural slopes and earthfills.
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Abstract
High resolution sidescan sonar and multibeam surveys carried out offshore northwestern sector of the Ischia volcanic island revealed a complex seafloor topography controlled by hummocky features. This peculiar morphology results from irregular mounds and ridges characterizing landslide deposits of catastrophic events. Mostly of these landslide accumulations are related to historical events, but their stratigraphic positions testify an older slope instability. The morphologic features point to a recurrence of landslide events with catastrophic implications. Historical seismicity has been recognized as a main triggering factor for slope instabilities along the northern border of Mt. Epomeo. Macroseismic analyses suggest a restricted epicentral area coincident with such a border and controlled by a principal seismo-tectonic structure ENE-WSW oriented. This situation well conforms with the recent individuation of the submerged hummocky topography found offshore Lacco Ameno village.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | 500 Scienze naturali e Matematica 500 Scienze naturali e Matematica > 501 Scienze naturali e Matematica - Filosofia e teoria 500 Scienze naturali e Matematica > 550 Scienze della Terra 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia |
| Depositing User: | Dr Crescenzo Violante |
| Date Deposited: | 15 Oct 2024 13:38 |
| Last Modified: | 15 Oct 2024 13:38 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/22501 |
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