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  • 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring  (91)
  • 05. General::05.02. Data dissemination::05.02.01. Geochemical data
  • E31
  • J24
  • Life Sciences (General)
Collection
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  • 11
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    Glutamine synthetase immunoreactivity is present in oligodendroglia of various regions of the central nervous system (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Glutamine synthetase immunoreactive oligodendrocytes were identified in the cerebral cortex, cerebellum, brain stem, and spinal cord. They were mostly confined to the gray matter, particularly close to neurons and processes. The white matter showed few immunoreactive oligodendroglia. It was suggested that some type of oligodendrocytes, specially those in perineuronal location, might fulfill a functional role more akin to astrocytes than to the normally myelinating oligodendroglia.
    Keywords: Life Sciences (General)
    Type: Glia (ISSN 0894-1491); 3; 5; 335-41
    Format: text
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    NASA TECHNICAL REPORTS
  • 12
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    Developmental regulation of collagenase-3 mRNA in normal, differentiating osteoblasts through the activator protein-1 and the runt domain binding sites (2000)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Collagenase-3 mRNA is initially detectable when osteoblasts cease proliferation, increasing during differentiation and mineralization. We showed that this developmental expression is due to an increase in collagenase-3 gene transcription. Mutation of either the activator protein-1 or the runt domain binding site decreased collagenase-3 promoter activity, demonstrating that these sites are responsible for collagenase-3 gene transcription. The activator protein-1 and runt domain binding sites bind members of the activator protein-1 and core-binding factor family of transcription factors, respectively. We identified core-binding factor a1 binding to the runt domain binding site and JunD in addition to a Fos-related antigen binding to the activator protein-1 site. Overexpression of both c-Fos and c-Jun in osteoblasts or core-binding factor a1 increased collagenase-3 promoter activity. Furthermore, overexpression of c-Fos, c-Jun, and core-binding factor a1 synergistically increased collagenase-3 promoter activity. Mutation of either the activator protein-1 or the runt domain binding site resulted in the inability of c-Fos and c-Jun or core-binding factor a1 to increase collagenase-3 promoter activity, suggesting that there is cooperative interaction between the sites and the proteins. Overexpression of Fra-2 and JunD repressed core-binding factor a1-induced collagenase-3 promoter activity. Our results suggest that members of the activator protein-1 and core-binding factor families, binding to the activator protein-1 and runt domain binding sites are responsible for the developmental regulation of collagenase-3 gene expression in osteoblasts.
    Keywords: Life Sciences (General)
    Type: The Journal of biological chemistry (ISSN 0021-9258); 275; 30; 23310-8
    Format: text
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    NASA TECHNICAL REPORTS
  • 13
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    Distributions of microbial activities in deep subseafloor sediments (2004)
    In:  Other Sources
    Details
    Publication Date: 2019-08-14
    Description: Diverse microbial communities and numerous energy-yielding activities occur in deeply buried sediments of the eastern Pacific Ocean. Distributions of metabolic activities often deviate from the standard model. Rates of activities, cell concentrations, and populations of cultured bacteria vary consistently from one subseafloor environment to another. Net rates of major activities principally rely on electron acceptors and electron donors from the photosynthetic surface world. At open-ocean sites, nitrate and oxygen are supplied to the deepest sedimentary communities through the underlying basaltic aquifer. In turn, these sedimentary communities may supply dissolved electron donors and nutrients to the underlying crustal biosphere.
    Keywords: Life Sciences (General)
    Type: Science (ISSN 0036-8075); 306; 5705; 2216-21
    Format: text
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    NASA TECHNICAL REPORTS
  • 14
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    Homozygous diploid deletion strains of Saccharomyces cerevisiae that determine lag phase and dehydration tolerance (2005)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This study identifies genes that determine length of lag phase, using the model eukaryotic organism, Saccharomyces cerevisiae. We report growth of a yeast deletion series following variations in the lag phase induced by variable storage times after drying-down yeast on filters. Using a homozygous diploid deletion pool, lag times ranging from 0 h to 90 h were associated with increased drop-out of mitochondrial genes and increased survival of nuclear genes. Simple linear regression (R2 analysis) shows that there are over 500 genes for which 〉 70% of the variation can be explained by lag alone. In the genes with a positive correlation, such that the gene abundance increases with lag and hence the deletion strain is suitable for survival during prolonged storage, there is a strong predominance of nucleonic genes. In the genes with a negative correlation, such that the gene abundance decreases with lag and hence the strain may be critical for getting yeast out of the lag phase, there is a strong predominance of glycoproteins and transmembrane proteins. This study identifies yeast deletion strains with survival advantage on prolonged storage and amplifies our understanding of the genes critical for getting out of the lag phase.
    Keywords: Life Sciences (General)
    Type: Applied microbiology and biotechnology (ISSN 0175-7598); 67; 6; 816-26
    Format: text
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    NASA TECHNICAL REPORTS
  • 15
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    Analysis of the seismo-volcanic and hydrothermal activity recorded on the Marsili submarine volcano (2011)
    Details
    Publication Date: 2012-02-03
    Description: Marsili is a back-arc volcano with a dominant tholeitic petrochemical affinity. This seamount, having an elevation of about 3000 m above the sea floor, an approximate length of 60 km in a NNE-SSW direction and a mean width of 25 km, is the biggest European volcano. The opening of the Marsili basin was related to a sharp acceleration of the roll-back of the Ionian lithosphere subducting below the Southern Tyrrhenian Basin. On the basis of all the geophysical, geological and petrological information knower, Marsili volcano can be considered as being the key needed to understand the dynamics of spreading and back-arc lithosphere formation in this Tyrrhenian sector. However, despite its importance in the Mediterranean geodynamical contest the seismo-volcanic and hydrothermal activity of this seamount remained little known. For this reason in 2006, in the framework of PRO.ME.TH.E.US project (Program of Mediterranean Exploration for Thermal Energy Use), founded by PRAMA s.r.l (Italy) (now Eurobuilding SpA), a multi-disciplinary research was conducted on the Marsili volcano area. In the framework of this project the INGV’s staff placed a broadband OBS/H (Ocean Bottom Seismometer with Hydrophone) on Marsili’s flat top (39° 16,383’ lat. Nord, 14° 23,588’ long. Est.) at a depth of 790 m. For this experiment the OBS/H operated from July 12th to 21st 2006. In only 9 days the submarine seismic station recorded more than 1000 seismo-volcanic and hydrothermal signals. By comparing the signals recorded with typical volcanic seismic activity, we group the recorded signals into: Volcano-Tectonic type B (817 VTB) events, occurrences of High Frequency Tremor (159 HFT) and quasi-monochromatic Short Duration Events (32 SDE). The small-magnitude VT-B swarms, having a frequency band of 2 - 6 Hz and a mean length of about 30 seconds, were almost all recorded during the first 7 days. During the last 2 days, the OBS/H mainly recorded HFT events with frequencies of over 40 Hz and few minutes length. On February 14th 2010, about three years and half after the first monitoring campaign another OBS/H was deployed in the same point for a long monitoring campaign (9 mouths). For this experiment the OBS/H was equipped with a Guralp CMG40T-OBS 3C seismometer, with flat transfer function in the band 60 s - 100 Hz, housed in a glass sphere with an autoleveling system that allows the sensor leveling in a range of ± 70° from the vertical. To monitor high frequency seismic and pressure signals the OBS/H was also equipped with a HTI-04- PCA/ULF Hydrophone, with a flat transfer function in the band 100s - 8 kHz. Both the signals were recorded by a 4 channels 21 bits SEND Geolon-MLS datalogger, at a sampling frequency of 200 Hz. During the nine months of the monitoring experiment the OBS/H recorded some thousand of little magnitude events very similar to that of the first experiment. The signals recorded in both the experiments were analyzed using polarization, spectral and clustering techniques. Both methods and results will be presented during the workshop.
    Description: Published
    Description: Salina Islands, Italy
    Description: 2.5. Laboratorio per lo sviluppo di sistemi di rilevamento sottomarini
    Description: open
    Keywords: Seismo-volcanic signals ; Marsili Seamount ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 16
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    Evidence of persistent seismo-volcanic activity at Marsili seamount (2012)
    Details
    Publication Date: 2017-04-04
    Description: The Marsili, the biggest European volcano, can be considered as being the key needed to understand the dynamics of spreading and back-arc lithosphere formation in the Tyrrhenian sector (Marani et al., 2004, and references therein). Despite of its dimensions, due to its geographical position, it is very difficult to monitor (D'Alessandro et al., 2011) and it still remains little known. In 2006 the INGV staff deployed a broadband OBS/H (Mangano et al., 2011) on the Marsili’s flat top at a depth of about 790 m. In only 9 days, the instrument recorded about 800 seismo-volcanic events (D'Alessandro et al., 2009). This experiment, for the first time, revealed an intense seismo-volcanic activity of the Marsili. However, the short duration of the experiment didn’t allow to characterize, in an exhaustively way, the seismo-volcanic activities currently in act on the seamount. For this reason, on February the 14th 2010 another OBS/H was deployed in the same point for a long time experiment (9 months). During the monitoring campaign, the submarine station recorded some thousands of local little magnitude events. The entire data set was classified, on the basis of the time and frequency domain appearances following Wasserman (2002); we recognized 589 Volcano-Tectonic type A (VT-A) events and 1952 Volcano-Tectonic type B (VT-B) events (Fig. 1), measuring their local magnitude following Havskov et al. (2003). The seismogram of a typical VT-A event is dominated by P and S phases and by a short coda (Fig. 1a). These events are characterized by P phases with impulsive and high-amplitude onsets. The spectrogram shows broadband body phases with very high frequency and energy content extending up to 80 Hz (Fig. 1c). The VT-A events recorded have local magnitude between 0.5 and 3 and time length between 40 and 70 s. For these earthquakes, separation of P and S waves is clear and TS-TP is between 0.35 and 0.55 s. Their average recurrence time is about 2-3 events a week, with moderate variation in the observed period. The VT-B events are characterized by P phases with emergent and low-amplitude onsets (Fig. 1b ). The waveforms don't show any clear S wave arrival and they are featured by long coda (Fig. 1b). The VT-B events have time length between 15 and 40 s and local magnitude between -0.5 and 1.5. Their spectrograms shows a narrow frequency content (Fig. 1d). The time distribution of VT-B occurrence shows periods of moderate activity (some events a week) alternating with periods of intense activity (70 events a day). From Fig. 1f is also clear a time cyclic process and an upward trend in the VT-B activity. An increase in VT-B activity is often reported in some active volcanoes before significant eruptions. The observation of VT swarms on the Marsili volcano strongly suggest that it is still active. Further, it should not be ignored that potential volcanic eruptions could efficiently generate tsunami along the nearby coastlines.
    Description: Published
    Description: 213-214
    Description: 2.5. Laboratorio per lo sviluppo di sistemi di rilevamento sottomarini
    Description: JCR Journal
    Description: open
    Keywords: Marsili, seismo-volcanic activity, Ocean Bottom Seismometer, Hydrophone ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 17
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    Rete gravimetrica di precisione all'isola di Pantelleria. Monografie delle stazioni. Situazione al mese di luglio 2011 (2012)
    Details
    Publication Date: 2020-11-10
    Description: Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Napoli Osservatorio Vesuviano
    Description: Published
    Description: 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive
    Description: open
    Keywords: Rete gravimetrica ; Schede monografiche ; Misure gravimetriche ; Pantelleria ; 04. Solid Earth::04.02. Exploration geophysics::04.02.02. Gravity methods ; 04. Solid Earth::04.03. Geodesy::04.03.05. Gravity variations ; 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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  • 18
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    The stress field beneath a quiescent stratovolcano: The case of Mount Vesuvius (2015)
    American Geophysical Union
    Details
    Publication Date: 2020-12-15
    Description: We have analyzed a focal mechanism data set for Mount Vesuvius, consisting of 197 focal mechanisms of events recorded from 1999 to 2012. Using different approaches and a comparison between observations and numerical models, we have determined the spatial variations in the stress field beneath the volcano. The main results highlight the presence of two seismogenic volumes characterized by markedly different stress patterns. The two volumes are separated by a layer where the seismic strain release shows a significant decrease. Previous studies postulated the existence, at about the same depth, of a ductile layer allowing the spreading of the Mount Vesuvius edifice. We interpreted the difference in the stress pattern within the two volumes as the effect of a mechanical decoupling caused by the aforementioned ductile layer. The stress pattern in the top volume is dominated by a reverse faulting style, which agrees with the hypothesis of a seismicity driven by the spreading process. This agrees also with the persistent character of the seismicity located within this volume. Conversely, the stress field determined for the deep volume is consistent with a background regional field locally perturbed by the effects of the topography and of heterogeneities in the volcanic structure. Since the seismicity of the deep volume shows an intermittent behavior and has shown to be linked to geochemical variations in the fumaroles of the volcano, we hypothesize that it results from the effect of fluid injection episodes, possibly of magmatic origin, perturbing the pore pressure within the hydrothermal system.
    Description: Published
    Description: 1181–1199
    Description: 4T. Fisica dei terremoti e scenari cosismici
    Description: 2V. Dinamiche di unrest e scenari pre-eruttivi
    Description: 5V. Sorveglianza vulcanica ed emergenze
    Description: JCR Journal
    Description: restricted
    Keywords: vesuvius ; stress inversion ; focal mechanisms ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniques ; 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 19
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    Real-time monitoring and massive inversion of source parameters of very long period seismic signals:An application to Stromboli Volcano, Italy. (2007)
    AGU
    Details
    Publication Date: 2021-01-11
    Description: We present a comprehensive processing tool for the real-time analysis of the source mechanism of very long period (VLP) seismic data based on waveform inversions performed in the frequency domain for a point source. A search for the source providing the best-fitting solution is conducted over a three-dimensional grid of assumed source locations, in which the Green’s functions associated with each point source are calculated by finite differences using the reciprocal relation between source and receiver. Tests performed on 62 nodes of a Linux cluster indicate that the waveform inversion and search for the best-fitting signal over 100,000 point sources require roughly 30 s of processing time for a 2-min-long record. The procedure is applied to post-processing of a data archive and to continuous automatic inversion of real-time data at Stromboli, providing insights into different modes of degassing at this volcano
    Description: Published
    Description: L04301
    Description: reserved
    Keywords: NONE ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Format: 1736327 bytes
    Format: application/pdf
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  • 20
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    The 2006 eruption of Mt. Etna (Italy): new multidisciplinary approach implemented by the UFSO staff of INGV Catania Section (2008)
    Details
    Publication Date: 2012-02-03
    Description: The 2006 eruption of Mt. Etna (Italy): new multidisciplinary approach implemented by the UFSO staff of INGV Catania Section S. Mangiagli, M. Neri, E. Pecora, D. Reitano, A. Amantia, E. Biale, M. D’Agostino, M. La Via and O. Torrisi Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania, P. Roma, 2 - 95125, Catania Italy (mangiagli@ct.ingv.it, reitano@ct.ingv.it) During the latest (2006) eruptive activity of Mount Etna (Sicily - Italy) multidisciplinary instrumental networks and observations produced useful and significant data in order to understand the eruptive dynamics of this volcano. In this context, the staff of the INGV Catania Section Department called Unità Funzionale Sala Operativa (UFSO) actively participates in national and European research projects dealing with the development and use of new systems with high technological content useful, in particular, during eruptions or seismic crises. Another aspect of this work is represented by the development of software for the supervisory and automatic control of the working systems. For example during the last few weeks of 2006, ash-rich columns several km in height, and consequent fallout characterized the eruption of Mt Etna and severely hampered the functioning of the nearby International Airport of Catania. Therefore, for a better evaluation of real time systems a new dedicated web site has been realized, improving the availability of fundamental data for the Italian Department of Civil Defence (DPC). The DPC staff, using also INGV scientific data, releases daily bulletins to Italian government authorities. Multidisciplinary data are collected and well represented in risk maps. Moreover, various algorithms have been implemented and used to make simulations of eruptive clouds from Mt. Etna. All realized maps also use wind forecasts at different altitude and different scenarios are available in a new software able to plot different parameters like, for example, temperature and wind speed/direction in different isobaric levels, precipitation rate and total cloud cover.
    Description: INGV, Sezione Catania
    Description: Published
    Description: Vienna, Austria
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 5.5. Attività di Sala Operativa
    Description: open
    Keywords: Mmultidisciplinary approach ; Etna 2006 ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 05. General::05.06. Methods::05.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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