GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Publication Date: 2021-05-12
    Description: Mapping and luminescence aging of raised marine terraces and aeolian ridges along an ∼90 km coastal stretch in southwestern Sicily provide the first quantitative assessment of vertical tectonic deformation in this region, which spans the frontal part of an active thrust belt. We recognized a staircase of eleven terraces and nine related aeolian ridges. The elevation profile of terraces parallel to the coast shows a 〉90 km long bell-shaped pattern, onto which shorter-wavelength (∼10 km long) undulations are superimposed. Luminescence ages from terraced beach deposits and aeolian sediments constrain the position of paleoshorelines formed during MIS 5e, 7a and 7c, with a maximum uplift rate of ∼0.75 mm/a, and indicate a late Middle-Late Pleistocene (80–400 ka) age for the sequence of terraces. The elevation of Lower Pleistocene morpho-depositional markers points that uplift may have occurred at similar rates at the beginning of the Early Pleistocene, but almost zeroed between ∼1.5 and 0.4 Ma before the recent renewal. The uneven elevation of Middle-Upper Pleistocene paleoshorelines observed moving along the coast documents that uplift embeds both a regional and a local component. The regional, symmetric bell-shaped uplift is related to involvement in the thrust belt of thicker crustal portions of the northern African continental margin. The short-wavelength undulations represent the local component and correspond to actively growing bedrock folds. The present study contributes to unravel the different spatial and temporal scales of deformation processes at a collisional margin.
    Description: Published
    Description: 106812
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: Marine terraces ; Aeolian ridges ; Luminescence dating ; Pleistocene ; Frontal thrust belt ; Fold growth ; Southwestern Sicily ; Mediterranean sea ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2021-06-25
    Description: Seeps are the expression of the migration of hydrocarbons from subsurface accumulations to the surface in sedimentary basins. They may represent an important indication of the presence of petroleum (gas and oil) reservoirs and faults, and are a natural source of greenhouse gas (methane) and atmospheric pollutants (ethane, propane) to the atmosphere. Romania is one of the countries with the largest number of seeps in the world, due to the high petroleum potential and active tectonics. Based on a review of the available literature, and on the field surveys performed by the authors during the last 17 years, we report the first comprehensive GIS-based inventory of 470 seeps in Romania (HYSED-RO), including gas seeps (10.4% of the total), oil seeps (11.7%), mud volcanoes (50.4%), gas-rich springs (12.6%), asphalt (solid) seeps (4.3%), unclassified manifestations (4.0%), and uncertain seeps (6.6%). Seeps are typically located in correspondence with major faults and vertical and fractured stratigraphic contacts associated to petroleum reservoirs (anticlines) in low heat flow areas, and their gas-geochemistry reflects that of the subsurface reservoirs. The largest and most active seeps occur in the Carpathian Foredeep, where they release thermogenic gas, and subordinately in the Transylvanian Basin, where gas is mainly microbial. HYSED-RO may represent a key reference for baseline characterization prior to subsurface petroleum extraction, for environmental studies, and atmospheric greenhouse gas emission estimates in Romania.
    Description: Published
    Description: 39
    Description: 6A. Geochimica per l'ambiente
    Description: JCR Journal
    Keywords: hydrocarbon seeps ; methane ; mud volcanoes ; petroleum systems ; seep database ; 03.04. Chemical and biological
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2017-04-04
    Description: On the Ionian Sea coast of southern Italy, spanning the transition from the Calabrian Arc to the Apennines, NE-directed motion of the thin-skinned frontal thrust belt of the Apennines toward the Apulian foreland reportedly ceased during the Early-Middle Pleistocene. The submarine extension of the frontal thrust belt is represented by the Amendolara ridge, which stretches for over 80 km to the SE beneath the Taranto Gulf. High-resolution marine geophysical data collected on the Amendolara ridge during the TEATIOCA_2011 cruise provided unequivocal constraints to assert active fault-related fold growth. Single-channel seismic (sparker) and acoustic CHIRP profiles, corroborated by multibeam mapping and shallow coring, form the novel dataset to constrain the near-bottom evolution. The new data were benchmarked to the crustal geometry by means of interpretation of existing multichannel seismic profiles.
    Description: Published
    Description: Arcavacata di Rende (CS)
    Description: 3.2. Tettonica attiva
    Description: open
    Keywords: Active fault-propagation folds ; Blind faults ; Seismogenic sources ; Jonian Sea ; 04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology ; 04. Solid Earth::04.04. Geology::04.04.03. Geomorphology ; 04. Solid Earth::04.04. Geology::04.04.04. Marine geology ; 04. Solid Earth::04.04. Geology::04.04.09. Structural geology ; 04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Extended abstract
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2020-05-27
    Description: On 24 August 2016 a Mw 6.0 earthquake marked the beginning of a severe seismic sequence that struck Central Italy. This shock was followed by a Mw 5.9 on 26 October, by a Mw 6.5 on 30 October, by two Mw 5.4 aftershocks and by over 30,000 smaller shocks. Based on the widespread occurrence of surface breaks the majority of workers agreed that this sequence was caused by a widely-recognized system of Quaternary normal faults crossing the region, namely the Monti della Laga - Monte Vettore fault system. In this study we use surface and subsurface geological data, coupled with distributions of relocated seismicity and InSAR evidence of ground displacement, to show that the earthquake sequence was caused by the reactivation at depth of tectonic structures inherited from older tectonic phases combined with sympathetic slip along shallow ruptures. In particular we maintain that an inherited thrust fault is the most likely source of the 30 October, Mw 6.5 earthquake, the largest of the sequence. We also propose that the sequence involved slip along a normal fault partially located in the footwall of such thrust, and that this was the source of the 24 August, Mw 6.0 event. This latter fault partially reactivated the thrust in an extensional sense. The 26 October, Mw 5.9 event was caused by the extensional reactivation of an eastern portion of the same thrust; together with the 24 August earthquake this event triggered the reactivation of the whole thrust with extensional kinematics, ultimately leading to the Mw 6.5 shock. The 2016 sequence illuminates several aspects of the seismotectonics of the Central Apennines, casting doubts on a number of hypotheses that were put forward based exclusively on observations of exposed brittle structures. It also shows the key role of reactivated inherited structures as potential sources for large earthquakes, in addition to the activation of younger extensional fault systems.
    Description: Published
    Description: Vienna
    Description: 1T. Deformazione crostale attiva
    Keywords: Amatrice earthquake ; Norcia earthquake ; Geological cross-sections ; Seismotectonic model ; solid earth
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2017-04-04
    Description: INGV is currently the largest European scientific institution dealing with Earth Sciences research and real-time surveillance, early warning, and forecast activities in geophysics and volcanology. The Laboratorio Didattica e Divulgazione Scientifica of INGV organizes every year rich educational and outreach activities with schools of different levels and with general public to convey scientific knowledge and to promote research on science and nature, focusing on volcanic and seismic hazard. The activities encompass a wide variety of formats, such as the opening of our labs to schools for guided visits, contributing to national (e.g., the Italian “Week of the Scientific Culture”, launched by the Ministry of Education and Research) and international (e.g., the European “Night of the Researchers”) events, editing educational videos, creating multimedia tools also available on the Web. Moreover, we contribute to expositions and science festivals organizing exhibitions with experiments, models, and exhibits designed to teaching and learning geophysics. Finally, we offer guided visits to the control rooms run by our Institute, which ensures the round-the-clock volcanic and seismic surveillance of the whole Italian territory. During the Week of the Scientific Culture and the Night of the Researchers we opened our Institute to the general public, in order to show our laboratories, to talk about new researches on Earth Sciences and to explain the volcanic and seismic risk and the related surveillance activities. These initiatives are widely appreciated by the community and we organized special events with the aim to inspire curiosity toward scientific research, and to facilitate the approach of the general public to science and nature. The special event of the 2010 programmes was a scientific-musical format: Seismic waves and acoustic waves, from earthquake to music. The aim of this project was to involve the public in scientific events offering happening where the scientific language is mediate through the language of the music. In this way, scientific phenomenon are brought in using emotion, making easier the understanding of the scientific themes. The format started with short lectures on earthquake and seismic wave propagation to move on the comparison between the seismic waves and the acoustic waves. We used seismograms, acoustic instruments, the voice, and the Earth sounds to explain the relation between earthquake waves and music. The scientific talks were organized to create a trail that, through emotion and curiosity, guides the public to the discovery and comprehension of the scientific phenomenon. The final part of the event was devoted to classical/jazz/blues live concerts performed by groups and ensembles, some of them arranged by INGV researchers. As a general result, thanks to this project we joined science and community, merging the INGV mission with the public expectation. This scientific-musical format represented an experimental outreach project, new, stimulating, and appreciated by the audience that can be used as good practice of scientific divulgation.
    Description: Published
    Description: Vienna- Austria
    Description: 5.9. Formazione e informazione
    Description: open
    Keywords: Seismic waves ; earthquake ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2017-04-04
    Description: The present study is focused on a morphometric analysis of high resolution multibeam data (10m, 5m and, locally, 2m resolution), that were acquired during the oceanographic TEATIOCA 2011 campaign along a sector of the Ionian margin of northern Calabria. The integration of morphometric analysis with sparker and chirp data allowed to unveil basic but robust information about: 1. hierarchy of the fault systems controlling the bathymetric evolution; 2. the interplay between tectonic and erosional processes in sea-floor modeling; 3. uplift rates; 4. tilting processes.
    Description: Published
    Description: Arcavacata di Rende (CS)
    Description: 3.2. Tettonica attiva
    Description: open
    Keywords: fault modeling ; erosional marine terraces ; 04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology ; 04. Solid Earth::04.04. Geology::04.04.03. Geomorphology ; 04. Solid Earth::04.04. Geology::04.04.04. Marine geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Extended abstract
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2017-04-04
    Description: Morphotectonic analysis and fault numeric modeling of uplifted marine terraces along the southern half of the Taranto Gulf , between the Sibari and San Nicola plains (Fig. 1), allow us to place quantitative constraints on Middle Pleistocene-Holocene deformation in the Southern Apennines.
    Description: Published
    Description: Arcavacata di Rende (CS)
    Description: 3.2. Tettonica attiva
    Description: open
    Keywords: Marine terraces ; Regional uplift ; Fault propagation folds ; Fault modeling ; 04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismology ; 04. Solid Earth::04.04. Geology::04.04.02. Geochronology ; 04. Solid Earth::04.04. Geology::04.04.03. Geomorphology ; 04. Solid Earth::04.04. Geology::04.04.09. Structural geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Extended abstract
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2019-03-26
    Description: Seismotectonics in Italy: data and models
    Description: Published
    Description: 139-147
    Description: 2T. Deformazione crostale attiva
    Description: N/A or not JCR
    Keywords: sorgente sismogenetica ; faglia attiva ; sismotettonica ; 04.07. Tectonophysics ; 05.08. Risk ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2019-05-24
    Description: We adopted a multidisciplinary approach to investigate the seismotectonic scenario of the 30 October 2016, Mw 6.5, Norcia earthquake, the largest shock of the 2016-2017 central Italy earthquake sequence. First, we used seismological and geodetic data to infer the dip of the main slip patch of the seismogenic fault, that turned out to be rather low-angle (37°). To evaluate whether this is an acceptable dip for the main seismogenic source, we modeled earthquake deformation using single- and multiple-fault models deduced from aftershock pattern analyses. These models show that the coseismic deformation generated by the Norcia earthquake is coherent with slip along a rather shallow-dipping plane. To understand the geological significance of this solution we reconstructed the sub-surface architecture of the epicentral area. As the available data are not robust enough to converge on a single fault model, we built three different models encompassing all major geological evidence and the associated uncertainties, including the tectonic style and the location of major decollement levels. In all models the structures derived from the contractional phase play a significant role: from controlling segmentation to partially reusing inherited faults, to fully reactivating in extension a regional thrust, geometrically compatible with the source of the Norcia earthquake. Based on our conclusions, some additional seismogenic sources falling in the eastern, external portions of the Apennines may coincide with inherited structures. A circumstance that may be a common occurrence in this region of the chain, where the inception of extension is as recent as Middle-Upper Pleistocene.
    Description: This work was supported by INGV R.U. 0865.050, P.I. U. Fracassi, of Project MIUR-FISR 2016 “Centro di studio e monitoraggio dei rischi naturali dell'Italia centrale”, and by “Finanziamenti di Ateneo per Progetti Scientifici” - FRA 2015, P.I. L. Bonini. Petroleum Expert Ltd is acknowledged for making available the Move software to the to the University of Trieste.
    Description: Published
    Description: 990-1017
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: 2016 central Italy earthquake sequence ; geodetic inversion ; geological modeling ; 04.07. Tectonophysics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2019-09-20
    Description: La fotogrammetria digitale Structure-from-Motion (SfM) oggi è molto utilizzata poiché permette di ottenere modelli digitali completi e ad alta precisione con operazioni semplici tanto nella fase di misura, attuata mediante una normale fotocamera ed eventualmente basata su una rete di appoggio topografico, quanto in quella di analisi dati. Si tratta di una tecnologia versatile che risulta utile sia in ambito topografico/geomorfologico [Westoby et al., 2012], sia in ambito architettonico [Teza et al., 2016]. In questo lavoro sono presentati i risultati di una campagna di misura esclusivamente terrestre, quindi realizzata senza l’ausilio di sistemi aerei quali droni, finalizzata al rilievo di un versante in zona aquilana. Lo scopo è quello di capire se sia possibile o meno realizzare monitoraggi del terreno realmente utili per misurare variazioni morfologiche mediante comparazione di modelli multitemporali ottenuti con procedure di acquisizione dati a basso costo. Tali procedure sono caratterizzate da una logistica di lavoro semplice e indipendente, senza l’uso di punti di controllo a terra (Ground Control Points, GCPs), tenendo ben presente il fatto che, in condizioni di emergenza, un rilievo terrestre è fortemente vincolato alla accessibilità delle aree su cui è possibile camminare ed alla visuale spesso ostruita dalla presenza di vegetazione. Si sottolinea pertanto che la valenza del lavoro si riferisce essenzialmente al monitoraggio rapido e in presenza di fattori ostativi all’uso di GCPs, anche se alcuni dei risultati ottenuti riguardo alla risoluzione e alla scelta di una particolare fotocamera rispetto ad un’altra hanno validità generale. È infatti di particolare interesse comprendere quale sia la risoluzione spaziale realmente ottenibile, la quale dipende dall’ottica della camera utilizzata per gli scatti e dalla distanza di lavoro, ma anche dalla copertura raggiungibile da osservazioni terrestri. È chiaro che, nel quadro di un monitoraggio libero e a basso costo, si tratta altresì di valutare le prestazioni, in termini di bontà dei modelli fotogrammetrici ottenuti, di fotocamere di fascia medio-alta ma non necessariamente di tipo professionale. Si parla cioè di apparecchi acquistabili con cifre contenute in alcune centinaia di euro e non migliaia. Per questo lavoro sono state utilizzate due fotocamere digitali di produzione Nikon: la D3300 e la Coolpix P520. Inoltre, per avere un riferimento stabile e preciso per scopi di confronto e validazione dei risultati, è stato utilizzato un laser scanner terrestre (TLS) long range Optech ILRIS-ER [Optech, 2017]. Il presente lavoro si aggiunge, completandole, alle esperienze precedenti condotte presso la sezione di Bologna dell’INGV e inerenti al confronto SfM e TLS [Pesci et al., 2015; Teza et al., 2016], all’ottimizzazione del numero di scatti fotografici [Pesci e Teza, 2016], alla valutazione della risoluzione del modello fotogrammetrico in funzione del pixel a terra [Pesci et al., 2016a] e alla valutazione dei risultati ottenibili con fotocamere diverse ma compatibili [Pesci et al., 2016b].
    Description: Published
    Description: 1-24
    Description: 7A. Geofisica per il monitoraggio ambientale
    Description: N/A or not JCR
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...