Magnitude-frequency distribution of submarine landslides in the Gioia Basin (southern Tyrrhenian Sea)

Casas, David; Chiocci, Francesco Latino; Casalbore, Daniele; Ercilla, Gemma; Urbina, Josetxu Ortiz de

doi:10.1007/s00367-016-0458-2

Cited by 33 publications

(17 citation statements)

References 48 publications

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“…A basin-scale mass-transport deposit (the Nicotera Slump, [23]) covering an area of 636 km 2 and with an estimated volume of about 30 km 3 is recognizable in the continental slope stratigraphy. The Gioia-Mesima canyon-channel system, draining the entire continental margin, is well recognizable along with over 400 landslide scars on the morpho-bathymetric data ( Figure 1); these landslide scars affected an area of >85 km 2 and mobilized approximately 1.4 km 3 of sediment [15].…”

Section: Introductionmentioning

confidence: 90%

“…This type of slope failure mostly occurs along canyons, accounting for more than half of the total observations (59%), even if they are generally of small-and medium-size, contributing only to the 5.2% of the mobilized sediment volume [15]. Another main cluster of small-and medium-size, disintegrative-like landslide scars is observed along the tectonically-controlled scarps affecting the area.…”

Section: Disintegrative-like Landslides Along Canyons and Tectonicallmentioning

confidence: 99%

“…In this paper, our aim is to outline the large variability of geomorphic features related to the submarine mass movements along the Calabro-Tyrrhenian Margin through a review of selected case studies. This dataset is used to discuss the main factors in controlling the failure and post-failure behavior of the recognized landslides as well as a preliminary assessment of their [15]), the main faults (violet lines from [16]) and the location of the following figures (blue boxes). The inset shows a simplified structural sketch of Southern Italy (modified from [17]); KCC: Kabilo-Calabride Chain Units; AMC: Appennine-Maghrebian Chain Units; PBF: Pelagian Block Foreland Units; QV: Quaternary Volcanoes; 1 regional overthrust of the Kabilo-Calabride units upon the Apennine-Maghrebian; 2 external front of the Apennine-Maghrebian Chain upon the Foreland units and the External Thrust System Chain; 3 main normal and strike-slip faults.…”

Section: Introductionmentioning

confidence: 99%

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Morphological Variability of Submarine Mass Movements in the Tectonically–Controlled Calabro–Tyrrhenian Continental Margin (Southern Italy)

et al. 2019

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The analysis of high resolution morpho–bathymetric data on the Calabro Tyrrhenian continental margin (Southern Italy) enabled us to identify several morphological features originated by mass–wasting processes, including shallow gullies, shelf–indenting canyons and landslides. Specifically, we focus our attention on submarine landslides occurring from the coast down to −1700 m and affecting variable areas from thousands of square meters up to few tens of square kilometers. These landslides also show a large variability of geomorphic features which seems strictly related to the physiographic/morphological domains where the landslide formed. Tectonically–controlled scarps and canyon flanks are typically characterized by several coalescent and nested landslides, with diameters ranging from hundreds to a few thousands of meters. Canyon headwalls are commonly characterized by a cauliflower shape due to an array of small (diameters of tens of meters) and coalescent scars. In all these sectors, disintegrative–like landslides dominate and are generally characterized by a marked retrogressive evolution, as demonstrated by their morphology and comparison of repeated bathymetric surveys at the canyon headwall. Only in the lower part of tectonically–controlled scarps, a few cohesive–like and isolated landslides are present, indicating the main role of slope gradients and height drop in controlling the post–failure behavior of the mobilized material. Open slopes are generally characterized by large–scale (diameters of thousands of meters) and isolated scars, with associated landslide deposits. A peculiar case is represented by the Capo Vaticano Scar Complex that affected an area of about 18 km2 and is characterized by an impressive variability of landslide morphologies, varying also at short distance. The large extent and variability of such scar complex are thought to be associated with the occurrence of a mixed contouritic–turbidite system. By integrating the high–resolution morpho–bathymetric dataset with the results of previous studies, we discuss the main factors controlling the variability in size and morphology of submarine landslides developed in a tectonically–controlled setting and provide preliminary considerations on their potential geohazard in a densely populated coastal area.

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Section: Introductionmentioning

confidence: 90%

Section: Disintegrative-like Landslides Along Canyons and Tectonicallmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphological Variability of Submarine Mass Movements in the Tectonically–Controlled Calabro–Tyrrhenian Continental Margin (Southern Italy)

et al. 2019

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“…First, what is the nature of the undisturbed sediment and do material heterogeneities explain the location of the failure plane? As many aspects of cohesive landslides appear to be scale invariant, this study of a relatively small landslide may provide key insights into our understanding of much larger ones (Micallef et al, 2008;Chaytor et al, 2009;Baeten et al, 2013;Casas et al, 2016;Clare et al, 2018). Second, what causes the observed heterogeneities within the stratigraphy?…”

Section: Aimsmentioning

confidence: 97%

A multi-disciplinary investigation of the AFEN Slide: the relationship between contourites and submarine landslides

Gatter

Clare

Hunt

et al. 2020

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The manuscript will undergo copyediting, typesetting and correction before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the book series pertain. Although reasonable efforts have been made to obtain all necessary permissions from third parties to include their copyrighted content within this article, their full citation and copyright line may not be present in this Accepted Manuscript version. Before using any content from this article, please refer to the Version of Record once published for full citation and copyright details, as permissions may be required.

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“…Over 400 landslide scars are recognizable on the morpho-bathymetric data, affecting an area of >85 km 2 and mobilizing approximately 1.4 km 3 of sediment ( Fig. 1; [15]).…”

Section: Fig 1 Shaded Relief Map Of the Calabro-tyrrhenian Continentmentioning

confidence: 99%

Morphological Variability of Submarine Mass Movements in the Tectonically-Controlled Calabro-Tyrrhenian Continental Margin (Southern Italy)

Casalbore¹,

Bosman²,

Casas³

et al. 2018

Preprint

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The acquisition of high resolution morpho-bathymetric data on the Calabro Tyrrhenian continental margin (Southern Italy) enabled us to identify several mass-wasting processes, including shallow gullies, shelf-indenting canyons and landslides. In particular, we focus our attention on submarine landslides occurring from the coast down to -1700 m, with mobilized volumes ranging from some hundreds up to tens of millions of cubic meters. These landslides also show a large variability of geomorphic features in the headwall, translational and toe domain. Based on their morphology and distribution, four main classes of coastal/submarine landslides have been recognized: a) rocky coastal/shallow-water failures characterized by large hummocky deposits offshore; b) large-size and isolated scars with associated landslide deposits, mostly occurring on open slope environment and lower part of tectonically-controlled escarpments; c) a linear array of coalescent and nested landslide scars occurring in the upper part of tectonically-controlled escarpments and canyon flanks; d) a cauliflower array of small and coalescent scars occurring in canyon headwall.  The latter two classes of landslides are also characterized by a marked retrogressive evolution and their landslide deposits are generally not recognizable on the morpho-bathymetric data. By integrating the morpho-bathymetric dataset with the results of previous studies, we also discuss the main factors controlling the variability in size and morphology of these submarine landslides to provide insights on their failure and post-failure behavior.

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Magnitude-frequency distribution of submarine landslides in the Gioia Basin (southern Tyrrhenian Sea)

Cited by 33 publications

References 48 publications

Morphological Variability of Submarine Mass Movements in the Tectonically–Controlled Calabro–Tyrrhenian Continental Margin (Southern Italy)

Morphological Variability of Submarine Mass Movements in the Tectonically–Controlled Calabro–Tyrrhenian Continental Margin (Southern Italy)

A multi-disciplinary investigation of the AFEN Slide: the relationship between contourites and submarine landslides

Morphological Variability of Submarine Mass Movements in the Tectonically-Controlled Calabro-Tyrrhenian Continental Margin (Southern Italy)

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