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  • Universidade Estadual de Maringá. Departamento de Biologia. Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais.  (81)
  • Wiley-AGU  (46)
  • Cell Press
  • Molecular Diversity Preservation International (MDPI)
  • 2020-2023  (134)
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  • 1
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    Duvalo “Volcano” (North Macedonia): A Purely Tectonic‐Related CO2 Degassing System (2022)
    Wiley-AGU
    Details
    Publication Date: 2022-04-01
    Description: Duvalo “volcano” is a site of anomalous geogenic degassing close to Ohrid (North Macedonia) not related to volcanic activity, despite its name. CO2 flux measurements made with the accumulation chamber (321 sites over ∼50,000 m2) showed fluxes up to nearly 60,000 g m−2 d−1, sustaining a total output of ∼67 t d−1. Soil gas samples were taken at 50 cm depth from sites with high CO2 fluxes and analyzed for their chemical and isotope composition. The gas is mainly composed by CO2 (〉90%) with significant concentrations of H2S (up to 0.55%) and CH4 (up to 0.32%). The isotope compositions of He (R/RA 0.10) and of CO2 (δ13C ∼ 0‰) exclude significant mantle contribution, while δ13C-CH4 (∼−35‰) and δ2H-CH4 (∼−170‰) suggest a thermogenic origin for CH4. The area is characterized by intense seismic activity and Duvalo corresponds to an active tectonic structure bordering the Ohrid graben. The production of H2S within the stratigraphic sequence may be explained by thermochemical reduction of sulfate. The uprising H2S is partially oxidized to sulfuric acid that, reacting with carbonate rocks, releases CO2. The tectonic structure of the area favors fluid circulation, sustaining H2S production and oxidation, CO2 production and allowing the escape of the gases to the atmosphere. In the end, Duvalo represents a tectonic-related CO2 degassing area whose gases originate mostly, if not exclusively, in the shallowest part of the crust (〈10 km). This finding highlights that even systems with trivial mantle contribution may sustain intense CO2 degassing (〉1,000 t km−2 d−1).
    Description: Published
    Description: e2021GC010198
    Description: 6A. Geochimica per l'ambiente e geologia medica
    Description: JCR Journal
    Keywords: Geogenic degassing ; CO2 fluxes ; 04. Solid Earth
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Fault Planes, Fault Zone Structure and Detachment Fragmentation Resolved With High‐Precision Aftershock Locations of the 2016–2017 Central Italy Sequence (2022)
    Wiley-AGU
    Details
    Publication Date: 2022-03-02
    Description: Three devastating earthquakes of MW ≥ 5.9 activated a complex system of high-angle normal, antithetic, and sub-horizontal detachment faults during the 2016–2017 central Italy seismic sequence. Waveform cross-correlation based double-difference location of nearly 400,000 aftershocks illuminate complex, fine-scale structures of interacting fault zones. The Mt. Vettore–Mt. Bove (VB) normal fault exhibits wide and complex damage zones, including a system of bookshelf faults that intersects the detachment zone. In the Laga domain, a comparatively narrow, shallow dipping segment of the deep Mt. Gorzano fault progressively ruptures through the detachment zone in four subsequent MW ∼ 5.4 events. Reconstructed fault planes show that the detachment zone is fragmented in four sub-horizontal, partly overlaying shear planes that correlated with the extent of the mainshock ruptures. We find a new, deep reaching seismic barrier that coincides with a bend in the VB fault and may play a role in controlling rupture evolution.
    Description: Published
    Description: e2021GL092918
    Description: 4T. Sismicità dell'Italia
    Description: 5T. Sismologia, geofisica e geologia per l'ingegneria sismica
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    Dinâmica da comunidade de Chironomidae (Diptera) em eventos de cheias e secas extremas em um rio Neotropical. (2022)
    Universidade Estadual de Maringá. Departamento de Biologia. Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais.
    Details
    Publication Date: 2022-05-04
    Description: Climate change can make extreme drought and flood events more frequent, while damming large rivers can alter the hydrological regime by making droughts more prolonged and floods less intense. Together, both factors can affect aquatic communities. Here, the variation of Chironomidae community attributes between extreme floods and droughts in a neotropical floodplain river was investigated. The hypothesis that the abundance, richness, diversity and variability attributes of the Chironomidae community are reduced after extreme events was tested. Sampling took place quarterly from 2000 to 2012, although only a few years were selected to investigate our predictions. Twelve sampling periods were selected, which were divided into years in which, El Niño (extreme flood) and La Niña (extreme drought) phenomena occurred. In the Paraná River, three points were determined for the collection of benthic material, in transect: right bank, center and left bank of the river. We recorded 75 morphospecies of Chironomidae. The most common taxa in periods of extreme flooding were Djalmabatista sp 2, Lopescladius sp 1 and Tanytarsus type E. For periods of extreme drought, the most common taxa were Polypedilum (Tripodura) sp 4, Polypedilum sp 3 and Lopescladius sp 1. A composition and attributes of the Chironomidae community in the Paraná River varied between before and after extreme flood and drought events. Attributes such as Shannon-Wiener abundance, richness and diversity were reduced after extreme floods and, in contrast, tended to increase after extreme drought events (except Shannon diversity). Thus, it can be stated that the evaluated flood and drought events, despite being extreme, have different consequences in the Chironomidae community of the Paraná River. Given the environmental and global conditions we experience today, including climate change and dams, extreme events could be even more frequent in aquatic ecosystems. Therefore, it is essential to understand the consequences of extreme flood and drought events on ecosystems with high biodiversity and that provide relevant ecosystem services such as floodplain rivers.
    Description: As mudanças climáticas podem tornar eventos de secas e cheias extremas mais frequentes, enquanto barramentos de grandes rios podem alterar o regime hidrológico por tornar as secas mais prolongadas e as cheias menos intensas. Em conjunto, ambos fatores podem afetar as comunidades aquáticas. Aqui, a variação dos atributos da comunidade de Chironomidae entre as cheias e secas extremas em um rio de planície de inundação neotropical. Testou-se a hipótese de que os atributos abundância, riqueza, diversidade e variabilidade da comunidade de Chironomidae são reduzidos após eventos extremos. As amostragens ocorreram trimestralmente 2000 a 2012, embora apenas alguns anos foram selecionados para investigar nossas predições. Selecionou-se 12 períodos de amostragem, que foram divididos em anos que ocorreram fenômenos de El Niño (cheia extrema) e La Niña (seca extrema). No rio Paraná foram determinados três pontos para coleta do material bentônico, em transecto: margem direita, centro e margem esquerda do rio. Registrou-se 75 morfoespécies de Chironomidae. Os táxos mais comuns nos períodos de cheia extrema foram Djalmabatista sp 2, Lopescladius sp 1 e Tanytarsus tipo E. Para os períodos de seca extrema, os táxons mais comuns foram Polypedilum (Tripodura) sp 4, Polypedilum sp 3 e Lopescladius sp 1. A composição e os atributos da comunidade de Chironomidae no rio Paraná variaram entre antes e depois de eventos de cheia e seca extremas. Os atributos, como abundância, riqueza e diversidade de Shannon-Wiener, foram reduzidos após cheias extremas e em contrapartida, tenderam a aumentar após eventos de seca extrema (exceto diversidade de Shannon). Pode-se afirmar que os eventos de cheias e secas avaliados, apesar de extremos, acarretam em diferentes consequências na comunidade de Chironomidae do rio Paraná. Considerando que as condições ambientais e globais que vivenciamos hoje, incluindo mudanças climáticas e barragens, os eventos extremos poderão ser ainda mais frequentes nos ecossistemas aquáticos. Portanto, é fundamental compreendermos as consequências dos eventos de cheia e seca extremas em ecossistemas com elevada biodiversidade e que fornecem relevantes serviços ecossistêmicos como rios de planícies de inundação.
    Description: Masters
    Keywords: Chironomidae (Diptera: Insecta) ; Zoobentos de água doce ; Comunidades, Ecologia de ; Pulso de inundação ; Mudanças climáticas ; ASFA_2015::Y::Zoobenthos ; ASFA_2015::F::Freshwater ecology ; ASFA_2015::C::Communities (ecological) ; ASFA_2015::F::Floodplains ; ASFA_2015::C::Climatic changes
    Repository Name: AquaDocs
    Type: Thesis/Dissertation
    Format: 26pp.
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  • 4
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    Sucessão de macroinvertebrados na decomposição da planta aquática exótica Hydrilla verticillata e da nativa Egeria najas. (2022)
    Universidade Estadual de Maringá. Departamento de Biologia. Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais.
    Details
    Publication Date: 2022-05-04
    Description: Decomposition is a process of great importance to the ecosystem. Macroinvertebrates together with fungi and bacteria play a very important role in the cycling of organic matter. Through decomposition, nutrients that make up the organisms can be reused and macroinvertebrates act by fractionating the organic matter in this process. The exotic species Hydrilla verticillata (L.f) Royle usually causes problems in various regions of the globe such as economic damage in hydroelectric plants. This exotic species competes with native species and can facilitates new invasions. The objective of the present work is to evaluate how the colonization of macroinvertebrates occurs during the decomposition of H. verticillata and E. najas macrophytes, as well as other community attributes during the process such as density, richness, Shannon diversity and Pielou evenness. The experiment was carried out in Garças Lake and the macrophytes were collected in Paraná River. Macrophytes were dried at room temperature and 5 g of each species were added in two types of litterbags, one thin mesh (0.5 mm) and another with thick mesh (4 mm), totalling 100 litterbags. The litterbags were fixed at 5 points in the lake and removed each 4 days. In the laboratory the litterbags were washed with a 0.2 μm mesh sieve, the decomposing material was sorted and the remainder was oven dried for further decay calculation. There was no significant difference in community attributes, except when time was applied assigned to analysis. The decomposition was similar in both species because both had similar characteristics, including phylogenetic proximity. The most observed taxon during the process was Chironomidae. Thus, it is worth noting that more studies are needed to elucidate questions related to the colonization process and quantify the degradation of organic matter of exotic and native species in the Upper Paraná River floodplain.
    Description: A decomposição é um processo de grande importâcia para os ecossistemas, e os macroivertebrados juntamente com fungos e bactérias possuem um importante papel na ciclagem da matéria orgânica. Pela decomposição, os nutrientes que compõem os organismos podem ser novamente reutilizados, e os macroinvertebrados atuam fracionando essa matéria orgânica. A espécie exótica Hydrilla verticillata (L.f) Royle é uma espécie de macrófita submersas que atualmente tem causado problemas em diversas regiões do globo. Além de causar prejuízos econômicos em usinas hidroelétricas H. verticillata causa prejuízos para as espécies nativas devido a competição por recursos, o que pode facilitar novas invasões. Avaliou-se como ocorre a colonização de macroinvertebrados durante a decomposição das macrófitas H. verticillata e E. najas, além de avaliar outros atributos de comunidade durante o processo como, por exemplo, densidade, riqueza, diversidade de Shannon e equitabilidade de Pielou. O experimento foi realizado na Lagoa das Garças e as macrófitas foram coletadas no Rio Paraná. Após a coleta, as plantas foram secas em temperatura ambiente. Foram acondicionadas 5 g de material seco de cada espécie em dois tipos de litterbag, um com malha fina (0,5mm) e outro com malha grossa (4 mm), totalizando 100 litterbags. Os litterbags foram fixados em 5 pontos na lagoa e retirados em um intervalo de 4 em 4 dias. Em laboratório, os litterbags foram lavados com auxílio de peneira de malha de 0,2 μm. O material em decomposição foi triado e o restante foi seco em estufa para posterior cálculo de decaimento. Não houve diferença significativa nos atributos de comunidade, exceto quando o tempo foi aplicado como uma variável à análise. A decomposição foi similar nas duas espécies devido a ambas possuírem características semelhantes. Talvez, a proximidade filogenética entre as macrófitas possa ter gerado a similaridade dos resultados obtidos durante o experimento. O táxon mais observado durante o processo foi de Chironomidae e o processo de colonização ocorreu de forma muito semelhante para ambos os tratamentos. Os tipos de malhas mostraram resultados parecidos, pois podem não ter influenciado a colonização e a entrada dos macroinvertebrados durante o processo de decomposição. Desse modo, a colonização dos invertebrados não dependeu das espécies de macrófita e/ou tipo de malha. Por isso ressalta-se a importância de novos estudos para melhor direcionar questões voltadas para a colonização e quantificar a degradação da matéria orgânica relativa a espécies exóticas e nativas na planície de inundação do alto rio Paraná.
    Description: Masters
    Keywords: Macroinvertebrados de água doce ; Colonização ; Lagos rasos ; Indicadores biológicos ; Macrófitas aquáticas submersas ; Decomposição ; Ecologia de lagos rasos ; Processos ecossistêmicos ; ASFA_2015::M::Macrophytes ; ASFA_2015::F::Freshwater ecology ; ASFA_2015::F::Floodplains ; ASFA_2015::D::Decomposition ; ASFA_2015::C::Colonization ; ASFA_2015::L::Lakes
    Repository Name: AquaDocs
    Type: Thesis/Dissertation
    Format: 25pp.
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  • 5
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    Comment on “Fragmentation of the Adriatic Promontory: New Chronological Constraints From Neogene Shortening Rates Across the Southern Alps (NE Italy)” by Moulin & Benedetti (2022)
    Wiley-AGU
    Details
    Publication Date: 2022-04-29
    Description: Moulin and Benedetti (2018), https://doi.org/10.1029/2018tc00495810.1029/2018tc004958 present a new interpretation of the Neogene-Quaternary tectonic evolution of the Eastern Southern Alps (ESA) in Friuli. After the reinterpretation of literature field data by means of remote sensing analysis (Digital Elevation Model interpretation), they calculated deformation rates of the tectonic structures through age interpretation of geomorphological surfaces of the Veneto-Friuli piedmont plain. The authors linked the result of surface analysis to the thrust and fold architecture of the ESA basing on the Castellarin et al. (2006), https://doi.org/10.1016/j.tecto.2005.10.013 interpretation of TRANSALP project and the Friuli geological map at the scale 1:150,000 (Carulli, 2006). Discussing their new architecture of the ESA, the Authors finally yielded rates of Europe-Adria plates convergence and suggest fragmentation of Adria over the last 1–2 Ma. The present comment is aimed at discussing several critical points concerning: the use of the geomorphological and chronological data; the misinterpretation of the Digital Terrain Model; the reconstruction of the balanced geological cross section. Moreover, the application of a structural model defined in a certain area to another without considering peculiar structural complexities available in the literature results is geologically and methodologically questionable.
    Description: Published
    Description: e2019TC005696
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: Comment ; active tectonics ; NE Italy ; Eastern Southern Alps ; Geodynamics ; 04.07. Tectonophysics ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 6
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    Tephra Fallout Probabilistic Hazard Maps for Cotopaxi and Guagua Pichincha Volcanoes (Ecuador) With Uncertainty Quantification (2022)
    Wiley-AGU
    Details
    Publication Date: 2022-05-03
    Description: Tephra fallout hazard assessment is undertaken with probabilistic maps that rely on numerical models. Regarding maps production, the input parameters of the model (including atmospheric conditions), the physical approximations of the numerical simulations, and the probabilities of occurrence of different eruption types in specific time frames are among the most critical sources of uncertainty. We therefore present a tephra fallout hazard assessment study for two active volcanoes (Cotopaxi and Guagua Pichincha) in Ecuador. We utilize PLUME-MoM/HYSPLIT models, and a procedure for uncertainty quantification where: (a) the uncertainty on eruptive source parameters and eruption type occurrence is quantified through expert elicitation; (b) we implement a new procedure for correlations between the different parameters, and (c) we use correction coefficients to take into account the uncertainty of the numerical model. Maps of exceedance probability given a deposit thickness threshold, and thickness maps given a probability of exceedance, are produced (a) for two eruptive scenarios (sub-Plinian and Plinian) and (b) as a combination of these scenarios in case the next eruption will be sub-Plinian or Plinian. These maps are described according to the uncertainty distribution of eruption type occurrence probabilities, considering their 5th percentile, mean, and 95th percentile values. We finally present hazard curves describing exceeding probabilities in 10 sensitive sites within the city of Quito. Additional information includes the areal extent and the population potentially affected by different isolines of tephra accumulation. This work indicates that full uncertainty quantification helps in providing more robust scientific information, improving the hazard assessment reliability.
    Description: Published
    Description: e2021JB022780
    Description: 6V. Pericolosità vulcanica e contributi alla stima del rischio
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 7
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    A meta-analysis of fault slip rates across the central Apennines (2021)
    Wiley-AGU
    Details
    Publication Date: 2022-03-16
    Description: Several methods such as paleoseismic trenching, mapping of offset geomorphic markers, and dating of scarp profiles have been used to determine slip rates of normal faults in the central Apennines. Combining measurements obtained with different methods remains challenging because non-tectonic processes can introduce noise or spurious signals that are elusive to quantify, and these influence slip rate estimates. To this end, we meta-analyzed throw measurements with associated ages collected in the central Apennines with several methods to quantify such erratic fluctuations and method-related variances. We show that throw rates are overdispersed with respect to nominal uncertainties in throw and age; therefore, they are commonly affected by unmodeled noise processes. After comparing throw rate distributions sampling the same faults with different techniques, no clear spatiotemporal patterns appear, but only quasi-random noise. Assuming that field investigators sampled real tectonic features (i.e., fault scarps), we find that such erratic throw rates indicate total uncertainties are two to three times greater than the stated observation uncertainties. In this situation, a simple and robust null hypothesis is appropriate. We propose that most faults should be assumed to have uniform throw rate along their traces, except for possible tapering near unconnected ends. We also propose that models in which throw rates are time-dependent (within the last 25 ka) are not yet justified. Then, relying on the estimated total uncertainties, we determine the most probable long-term fault throw rate for each active fault by combining different throw-rate probability density functions.
    Description: Published
    Description: e2021JB023252
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 8
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    New insights into the recent magma dynamics under Campi Flegrei caldera (Italy) from petrological and geochemical evidence (2022)
    Wiley-AGU
    Details
    Publication Date: 2022-03-16
    Description: The Campi Flegrei caldera is considered the most dangerous volcano in Europe and is currently in a new phase of unrest (started in 2000 and still ongoing) that has persisted intermittently for several decades (main crisis occurred from 1950-52, 70-72 and 82-84). Here, by combining the petrological and geochemical data collected in recent decades with numerical simulations, we place new constraints on the source(s) of the current dynamics of the volcano. In particular, we show that the measured (N2-He-CO2) geochemical changes at the fumaroles of Solfatara hydrothermal site are the result of massive (about 3 km3) magma degassing in the deep portion (≥ 200 MPa, 8 km of depth) of the plumbing system. This degassing mechanism would be able to flood the overlying hydrothermal system with hot gas, thus heating and fracturing the upper crust inducing shallow seismicity and deformation. This implies that the deep magma transfer process (≥8 km) has been decoupled from the source of deformation and seismicity, localized in the first kilometers (0-4 km) of caldera-filling rocks. This information on magma transfer depth can have important implications for defining the best monitoring strategies and for forecasting a future eruption. Finally, this study highlights how petrological and geochemical data allow us to explore the dynamics of the deep portion of the plumbing system and thus trace the occurrence of recharge episodes, in a portion of the ductile lower crust where magma transfer occurs in the absence of earthquakes. Plain Language Summary Calderas are volcanic depressions formed as the ground collapses during huge volcanic eruptions. They often exhibit pronounced unrest, with frequent earthquakes, ground uplift, and considerable heat and mass flux that are monitored by volcanologists for eruption forecasting. However, as this activity is due to the complex interactions among magma and hydrothermal system stored beneath the volcano, it is always difficult to predict the evolution of the unrest towards critical conditions until to eruption. The Campi Flegrei caldera is among the most dangerous volcanos in Europe and is currently in a new phase of unrest that has lasted for several decades, whose nature (magmatic or not magmatic) has remained unclear. Here, we combine petrological and geochemical observations collected in recent decades with numerical simulations to place new constraints on the source of the recent dynamics of the volcano. In particular, we show that new deep magma has recharged the shallow reservoir beneath the volcano and flooded the overlying hydrothermal system with hot gas; thereby weakening the upper rocks allowing deformation (ground uplift) and fracturing (seismicity). This information is particularly important in the case of high-risk Campi Flegrei caldera, because it can help to improve defense strategies in case of future eruption.
    Description: Published
    Description: e2021JB023773
    Description: 4V. Processi pre-eruttivi
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 9
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    Seasonal Variation of Methane Microseepage in the Dawanqi Oilfield (China): A Possible Climatic Control (2022)
    Wiley-AGU
    Details
    Publication Date: 2022-03-17
    Description: Natural gas microseepage in petroleum-bearing sedimentary basins is an important complement to geophysical methods in oil-gas exploration and a natural source of methane (CH4) for the atmosphere. Microseepage, typically occurring in correspondence with petroleum fields throughout the world, is generally lower in summer, due to temperature-driven methanotrophic consumption, and higher in winter. The global estimates of microseepage methane emission have, however, relatively high uncertainties because of limited amounts of flux data, leading to poor knowledge of the spatial distribution and temporal variability of the gas emission factors. We studied the seasonal variation of microseepage flux to the atmosphere from a petroleum field in China (the Dawanqi oilfield), through methane flux measurements performed in summer 2014, winter 2015, and summer 2019. Winter data refer to frozen soil conditions, with snow cover and ice thickness in the soil exceeding 60 cm. Gas concentration (CH4, CO2, C2+ alkanes) and stable C isotopic composition of CH4 and CO2 in shallow (4 m deep) boreholes confirmed the existence of thermogenic gas seepage. Methane microseepage is higher in summer and lower or nil in winter. This seasonal trend is opposite to what was observed in areas where winter soil is not or poorly frozen. Our data suggest that seasonal microseepage variation may not be univocal worldwide, being strongly dependent on the presence of ice and snow cover in winter. The regional increase of temperature due to climate change, already demonstrated for the Tarim Basin over the last 50 years, could, in the future, reduce winter ice and enhance annual methane emission to the atmosphere.
    Description: Published
    Description: e2021JD034637
    Description: 6A. Geochimica per l'ambiente e geologia medica
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 10
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    Slip Tendency Analysis, Fault Reactivation Potential and Induced Seismicity in the Val d'Agri Oilfield (Italy) (2022)
    Wiley-AGU
    Details
    Publication Date: 2022-03-18
    Description: The Val d'Agri basin hosts an oil-field, the largest in onshore Europe, and it is one of the areas of highest seismic hazard in Italy. In an unproductive marginal portion of the reservoir, wastewater is re-injected by a high-rate well. Since the beginning of re-injection in June 2006, a spatio-temporal correlation between microseismicity (ML ≤ 2.0) and wastewater injection has been observed (suggesting induced seismicity). In this study, we perform a slip-tendency analysis on the fault system involved in the induced seismicity through a coupled fluid-flow and geomechanical numerical model simulating the stress partitioning due to the tectonic forces and to the fluid injection. The model results show that the fluid diffusion is strongly dependent on the active stress field and the geological structure in which fluids are injected, which conditioned the occurrence of seismicity that aligned on a small portion of a NE-dipping fault. However, another fault located closer to the injection well and where no seismicity was detected, is the better well-oriented fault with the active stress field and, also, the one more susceptible to the pore pressure increase. These results suggest different types of fault deformation acting in the Val d'Agri oilfield as response to the fluid injection (i.e., a mixed-mode fault slip behavior). Understanding the stress partitioning in tectonically active regions where underground activities such as fluid injection are ongoing is fundamental to give strong constraints for the discrimination between natural and induced seismicity, and finally for a more reliable and robust definition of seismic hazard.
    Description: Published
    Description: 2019JB019185
    Description: 1T. Struttura della Terra
    Description: 2T. Deformazione crostale attiva
    Description: 6T. Studi di pericolosità sismica e da maremoto
    Description: 7T. Variazioni delle caratteristiche crostali e "precursori"
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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