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  • 1
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    Buried Alive: Imaging the 9 November 2022, Mw 5.5 Earthquake Source on the Offshore Adriatic Blind Thrust Front of the Northern Apennines (Italy) (2023)
    Wiley-AGU
    Details
    Publication Date: 2023-06-05
    Description: The prompt identification of faults responsible for moderate-to-large earthquakes is fundamental for understanding the likelihood of further, potentially damaging events. This is increasingly challenging when the activated fault is an offshore buried thrust, where neither coseismic surface ruptures nor GPS/InSAR deformation data are available after an earthquake. We show that on 9 November 2022, an Mw 5.5 earthquake offshore Pesaro ruptured a portion of the buried Northern Apennines thrust front (the Cornelia thrust system [CTS]). By post-processing and interpreting the seismic reflection profiles crossing this thrust system, we determined that the activated fault (CTS) is an arcuate 30-km-long, NW-SE striking, SW dipping thrust and that older structures at its footwall possibly influenced its position and geometry. The activation of adjacent segments of the thrust system is a plausible scenario that deserves to be further investigated to understand the full earthquake potential of this offshore seismogenic source.
    Description: Published
    Description: e2022GL102299
    Description: 4T. Sismicità dell'Italia
    Description: 5T. Sismologia, geofisica e geologia per l'ingegneria sismica
    Description: 2TR. Ricostruzione e modellazione della struttura crostale
    Description: 2IT. Laboratori analitici e sperimentali
    Description: JCR Journal
    Keywords: Seismic reflection profiles ; Structural geology ; blind thrust ; buried fault ; earthquake sequence ; seismogenic fault ; subsurface modelling ; 04.04. Geology ; 04.02. Exploration geophysics ; 04.07. Tectonophysics ; 04.06. Seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Inferring the depth and magnitude of pre-instrumental earthquakes from intensity attenuation curves (2023)
    Egu-Copernicus
    Details
    Publication Date: 2023-08-29
    Description: The Italian historical earthquake record is among the richest worldwide; as such it allows for the development of advanced techniques for retrieving quantitative information by calibration with recent earthquakes. Building on a pilot elaboration of northern Italian earthquakes, we developed a procedure for determining the hypocentral depth of all Italian earthquakes from macroseismic intensity data alone. In a second step the procedure calculates their magnitude, taking into account the inferred depth. Hypocentral depth exhibits substantial variability countrywide but has so far received little attention: pre-instrumental earthquakes were routinely “flattened” at the upper-crustal level (∼10 km), on the grounds that the calculation of hypocentral depth is heavily dependent on the largely unknown local propagation properties. We gathered a learning set of 42 earthquakes documented by reliable instrumental data and by numerous macroseismic intensity observations. We observe (1) that within 50 km from the epicenter the ground motion attenuation rate is primarily controlled by hypocentral depth and largely independent of magnitude, (2) that within this distance the fluctuations in crustal attenuation properties are negligible countrywide, and (3) that knowing both the depth and the expected epicentral intensity makes it possible to estimate a reliable magnitude.
    Description: INGV DPC, 2019–2021 agreement; All. A, WP 7
    Description: Published
    Description: 1007–1028
    Description: 4T. Sismicità dell'Italia
    Description: 5T. Sismologia, geofisica e geologia per l'ingegneria sismica
    Description: JCR Journal
    Keywords: hypocentral depth ; magnitude ; macroseismology ; pre-instrumental earthquakes ; 04.06. Seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    Nautilus: Biblioteca Scientifica Ragazzi (2023)
    INGV
    Details
    Publication Date: 2023-01-20
    Description: Tutti a bordo! Si parte per un viaggio fantastico sul Nautilus, il sottomarino del Capitano Nemo che dà il nome alla biblioteca scientifica ragazzi dell'Istituto Nazionale di Geofisica e Vulcanologia. Genitori, insegnanti e giovani lettori, navigheranno in un "mare" di libri e approderanno a una selezione di proposte di lettura che spiegano come sono fatti, come funzionano e come si trasformano il nostro pianeta e la sua atmosfera.
    Description: Published
    Description: 1TM. Formazione
    Keywords: scienze della terra ; biblioteca ragazzi
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book
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  • 4
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    Extremely fast Holocene coastal landscape evolution in the Kachchh Upland (NW India): Clues from a multidisciplinary review (2023)
    Taylor & Francis
    Details
    Publication Date: 2023-12-28
    Description: The coastal landscape of the Kachchh Upland (KU) region (NW-India) changed over the last fewthousand years from a shallow marine gulf to a salty desert (1-4 meters asl). In this area,bordered to the south by the Northern Hill Range (NHR), the tectonic-climatic interactiontriggered the sea level fall from +2/4 m circa (6000-2000 BP) to zero. An ancient riverpattern deposited a tidally regulated delta area during the sea level fall that stopped 2000-3000 years ago due to tectonic activity and a dry climate.Deltaic-alluvial fans (DAF) in front of the NHR suggest that the KU’s tectonic activity led tofast landscape evolution. We explored such drastic changes by integrating scientificinformation from a multidisciplinary literature review, identifying terraces and DAFs, andinferring faults through landform recognition, quantitative morphometry, andfield surveys.Our interpretation, summarized in a map, provides new information on active processesalong the NHR.
    Description: Published
    Description: 2167617
    Description: OSA4: Ambiente marino, fascia costiera ed Oceanografia operativa
    Description: JCR Journal
    Keywords: Kachchh ; coastal landscapeevolution ; tectonic-climatic interaction ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
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    Geomorphology of the upper sector of the Roncovetro active landslide (Emilia-Romagna Region, Italy) (2023)
    Taylor & Francis online
    Details
    Publication Date: 2023-11-23
    Description: We present the geomorphological map of the upper sector of the Roncovetro active landslide (Enza Valley, Emilia-Romagna, Italy). The 1:1500 scale map provides an accurate picture of the landslide in October 2014. The map is mainly based on the data collected during an airborne LiDAR survey. The capability of LiDAR to ‘penetrate’ the vegetation cover makes these data the most complete and accurate topographic dataset of this landslide. The map shows that the upper sector of the Roncovetro landslide consists of gravity- and water runoff-related forms. Gravitational features are linked to sliding and flowing movements that characterize the short- and long-term behaviour of the landslide. By comparing the 2014 LiDAR-Digital Elevation Model (DEM) with the 1973 DEM provided by the Emilia-Romagna Region, we calculated that 6.2 ± 0.8 × 105 m3 of material has moved from the top of the Roncovetro landslide in about 40 years.
    Description: Published
    Description: 2277898
    Description: OST2 Deformazione e Hazard sismico e da maremoto
    Description: OST5 Verso un nuovo Monitoraggio
    Description: OSA2: Evoluzione climatica: effetti e loro mitigazione
    Description: JCR Journal
    Keywords: Landslides ; Geomorphological map ; LiDAR ; Digital Elevation Model (DEM) ; Topographic change detection ; 04.03. Geodesy ; 04.04. Geology ; 05.04. Instrumentation and techniques of general interest ; 05.08. Risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
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    Plio-Quaternary coastal landscape evolution of north-western Sicily (Italy) (2023)
    Taylor & Farncis online
    Details
    Publication Date: 2024-05-27
    Description: ABSTRACTWe present and discuss the results of a geomorphological and geological study aimed at reconstructing the Plio-Quaternary evolution of the NW Sicily coastal belt , a low strain rate region in the central Mediterranean Sea.We performed morphometric and field analysis of Quaternary marine terraces extracting more than 300 shoreline location points subdivided into six orders. The obtained dataset was validate by investigating the morphological changes along topographic profiles and comparing the extracted locations and elevations with the stratigraphic boundaries in the Plio-Quaternary units.We distinguished two contiguous coastal sectors characterized by different paleo-shoreline elevations and Plio-Quaternary evolution, whose estimated uplift rates fit well with the well-known, regional eastward uplift rate increase along the Northern Sicilian continental margin.Obtained results, summarized in a geomorphological map and a morpho-evolutionary model, provide new valuable data to characterize the active deformation processes and the seismotectonic setting in this critical sector of the Africa-Europe plate boundary.
    Description: Published
    Description: 2159889
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: Marine terraces ; Coastal landscape evolution ; Low strain rate region ; Quaternary ; Sea level change ; southern Italy ; 04.04. Geology ; 03.01. General ; 04.03. Geodesy ; 04.07. Tectonophysics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 7
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    Holocene surface-rupturing paleo-earthquakes along the Kachchh Mainland Fault: shaping the seismic landscape of Kachchh, Western India (2024)
    Nature PG
    Details
    Publication Date: 2024-05-27
    Description: This study explores the seismotectonics of Kachchh in western India, a region with a low-to-moderate strain rate and a history of significant earthquakes, notably the 1819, Mw 7.8 Allah Bund, and the 2001, Mw 7.6 Bhuj. Despite its substantial seismic risk, comprehensive studies on Kachchh’s seismogenic sources are scarce. This is attributed to the concealed nature of active structures, hindering definitive age constraints in paleoseismological research. Our research comprises a detailed paleoseismic analysis of the north-verging, reverse Jhura Fault underlying the Jhura anticline, a segment of the Kachchh Mainland Fault. This fault segment shows evidence of surface-rupturing earthquakes in the area south of the Great Rann of Kachchh. The investigation reveals three paleoseismic events: Event I before 9.72 ka B.P., Event II between 8.63–8.20 ka B.P., and Event III between 6.20–6.09 ka B.P. The elapsed time since the last event on this fault is 〉 8000 years, suggesting that the area is exposed to a significant earthquake hazard. This highlights the need for more precise characterization of individual seismogenic sources for future earthquake preparedness.
    Description: Published
    Description: 11612
    Description: OST2 Deformazione e Hazard sismico e da maremoto
    Description: OST3 Vicino alla faglia
    Description: JCR Journal
    Keywords: Surface faulting ; Kachchh Mainland Fault ; Paleoseismology ; Seismic landscape ; Western India ; 04.07. Tectonophysics ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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