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  • Springer Nature  (28,732)
  • Wiley-Blackwell
  • 2005-2009  (24,939)
  • 1955-1959  (6,628)
  • 2009  (13,732)
  • 2006  (11,207)
  • 1957  (6,628)
Collection
Keywords
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Years
  • 2005-2009  (24,939)
  • 1955-1959  (6,628)
Year
  • 1
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    Empirical H/V spectral ratios estimated in two deep sedimentary basins using microseisms recorded by short-period seismometers (2009)
    Wiley-Blackwell
    Details
    Publication Date: 2021-06-22
    Description: In this work, we analyse continuous measurements of microseisms to assess the reliability of the fundamental resonance frequency estimated by means of the horizontal-to-vertical (H/V) spectral ratio within the 0.1–1 Hz frequency range, using short-period sensors (natural period of 1 s). We apply the H/V technique to recordings of stations installed in two alluvial basins with different sedimentary cover thicknesses—the Lower Rhine Embayment (Germany) and the Gubbio Plain (Central Italy). The spectral ratios are estimated over the time–frequency domain, and we discuss the reliability of the results considering both the variability of the microseism activity and the amplitude of the instrumental noise. We show that microseisms measured by short period sensors allow the retrieval of fundamental resonance frequencies greater than about 0.1–0.2 Hz, with this lower frequency bound depending on the relative amplitude of themicroseism signal and the self-noise of the instruments. In particular,we show an examplewhere the considered short-period sensor is connected to instruments characterized by an instrumental noise level which allows detecting only fundamental frequencies greater than about 0.4 Hz. Since the frequency at which the peak of the H/V spectral ratio is biased depends upon the seismic signal-to-instrument noise ratio, the power spectral amplitude of instrumental self-noise should be always considered when interpreting the frequency of the peak as the fundamental resonance frequency of the investigated site.
    Description: Published
    Description: 175-184
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: JCR Journal
    Description: open
    Keywords: site effects ; fourier analysis ; 04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Gas hazard assessment at the Monticchio Mt. Vulture, a volcano in Southern Italy (2009)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: Geochemical investigations have shown that there is a considerable inflow of gas into both crater lakes of Monticchio, Southern Italy. These lakes are located in two maars that formed 140 000 years ago during Mt. Vulture volcano s last eruptive activity. Isotopic analyses suggest that CO2 and helium are of magmatic origin; the latter displays 3He ⁄ 4He isotope ratios similar to those measured in olivines of the maar ejecta. In spite of the fact that the amount of dissolved gases in the water is less than that found in Lake Nyos (Cameroon), both the results obtained and the historical reports studied indicate that these crater lakes could be highly hazardous sites, even though they are located in a region currently considered inactive. This could be of special significance in very popular tourist areas such as the Monticchio lakes, which are visited by about 30 000 people throughout the summer, for the most part on Sundays.
    Description: Published
    Description: 83-87
    Description: 2.4. TTC - Laboratori di geochimica dei fluidi
    Description: JCR Journal
    Description: reserved
    Keywords: volcanic gases ; gas hazard ; crater lakes ; 04. Solid Earth::04.04. Geology::04.04.12. Fluid Geochemistry ; 04. Solid Earth::04.08. Volcanology::04.08.01. Gases ; 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    Seismic moment tensors of the April 2009, L’Aquila (Central Italy), (2009)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: On 2009 April 6, the Central Apennines were hit by an Mw = 6.3 earthquake. The region had been shaken since 2008 October by seismic activity that culminated in two foreshocks with Mw 〉 4, 1 week and a few hours before the main shock. We computed seismic moment tensors for 26 events with Mw between 3.9 and 6.3, using the Regional Centroid Moment Tensor (RCMT) scheme. Most of these source parameters have been computed within 1 hr after the earthquake and rapidly revised successively. The focal mechanisms are all extensional, with a variable and sometimes significant strike-slip component. This geometry agrees with the NE–SW extensional deformation of the Apennines, known from previous seismic and geodetic observations. Events group into three clusters. Those located in the southern area have larger centroid depths and a wider distribution of T-axis directions. These differences suggest that towards south a different fault systemwas activated with respect to the SW-dipping normal faults beneath L’Aquila and more to the north.
    Description: In press
    Description: 1.1. TTC - Monitoraggio sismico del territorio nazionale
    Description: JCR Journal
    Description: open
    Keywords: moment tensor ; seismotectonics ; L'Aquila ; 04. Solid Earth::04.07. Tectonophysics::04.07.04. Plate boundaries, motion, and tectonics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
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    The Mw 6.3, 2009 L’Aquila earthquake: source, path and site effects from spectral analysis of strong motion data (2009)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: The strong motion data of 2009 April 6 L’Aquila (Central Italy) earthquake (Mw = 6.3) and of 12 aftershocks (4.1 ≤ Mw ≤ 5.6) recorded by 56 stations of the Italian strong motion network are spectrally analysed to estimate the source parameters, the seismic attenuation, and the site amplification effects. The obtained source spectra for S wave have stress drop values ranging from 2.4 to 16.8 MPa, being the stress drop of the main shock equal to 9.2 MPa. The spectral curves describing the attenuation with distance show the presence of shoulders and bumps, mainly around 50 and 150 km, as consequence of significant reflected and refracted arrivals from crustal interfaces. The attenuation in the first 50 km is well described by a quality factor equal to Q( f ) = 59 f 0.56 obtained by fixing the geometrical spreading exponent to 1. Finally, the horizontal-to-vertical spectral ratio provides unreliable estimates of local site effects for those stations showing large amplifications over the vertical component of motion.
    Description: Published
    Description: 1573–1579
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: JCR Journal
    Description: open
    Keywords: Generalized inversion ; strong-motion ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
    Electronic Resource
    Electronic Resource
    Masthead (1957)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 29 (1957) 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330290101
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  • 6
    Electronic Resource
    Electronic Resource
    Forschungsergebnisse und Forschungstendenzen in der TrocknungstechnikVorgetragen auf dem Jahrestreffen der Verfahrens-Ingenieure am 2. Oktober 1956 in Hamburg. (1957)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 29 (1957), S. 170-176 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Durch die bisherigen Forschungsarbeiten wurden die Gesetzmäßigkeiten für die einzelnen Teilvorgänge der Trocknung und für deren Zusammenwirken unter den verschiedenartigen Bedingungen weitgehend aufgeklärt. Damit wurde es möglich, das Trocknungsverhalten der einzelnen Trocknungsgüter zu analysieren und spezielle Trocknungseigenschaften zu definieren, bei deren Kenntnis die wichtigsten charakteristischen Punkte im Trocknungsverlauf im voraus bestimmt werden können.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330290310
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  • 7
    Electronic Resource
    Electronic Resource
    Neuere Ergebnisse wärmetechnischer Grundlagenforschung (1957)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 29 (1957), S. 176-186 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zunächst wird über Untersuchungen berichtet, bei denen Wärmeübergang, Druckabfall sowie die Temperatur- und Geschwindigkeitsverteilung im rauhen Rohr gemessen wurden. Die Ergebnisse konnten allgemeingültig dargestellt und theoretisch begründet werden. Ferner wird auf wirtschaftliche Fragen und den Einfluß von Schmutzschichten im Rohr auf den Wärmeübergang eingegangen. Bei Untersuchungen an einem linsenförmigen Rohr und außen beheizten Ringspalten stand die Frage nach dem maßgebenden gleichwertigen Durchmesser im Vordergrund. Weiterhin wurde der Wärmeübergang zwischen staubhaltiger Luft und einer Kugelschüttung gemessen; dabei war kein merklicher Einfluß des Staubgehaltes zu erkennen. Sehr eingehend wurde schließlich das Strömungsverhalten von Rieselfilmen untersucht. Die kritische Reynolds-Zahl konnte zu 400 bestimmt werden. Außerdem wurden die Höhe der Wellen, die Filmdicke und die Wandschubspannung gemessen, so daß auch das Widerstandsgesetz der welligen Filmströmung angegeben und eine Näherungstheorie für den Wärmeübergang aufgestellt werden konnte.
    Additional Material: 22 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330290311
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  • 8
    Electronic Resource
    Electronic Resource
    Arbeitsgebiete und Grundlagen der bergmännischen VerfahrenstechnikVorgetragen beim Jahrestreffen der Verfahrens-Ingenieure am 2. Okt. 1956 in Hamburg. (1957)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 29 (1957), S. 201-206 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Aufbereitung ist angewandte Physik, physikalische Technologie und bergmännische Verfahrenstechnik. In der Verbrauchsgüter- und Genußmittelindustrie werden die gleichen Grundverfahren angewandt wie bei der Aufbereitung der Erze, der Kohlen, der Steine und Erden. Zweckentsprechende Kombinationen dieser Grundverfahren führen zur erfolgreichen Aufbereitung bergmännisch gewonnener Haufwerke. Die gleichen Grundverfahren und Grundvorgänge verbinden den Verfahrenstechniker mit dem Aufbereiter und veranlassen ihn, die Aufbereitung als „bergmännische Verfahrenstechnik“ zu kennzeichnen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330290314
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  • 9
    Electronic Resource
    Electronic Resource
    Versammlungsberichte (1957)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 29 (1957), S. 221-223 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330290318
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  • 10
    Electronic Resource
    Electronic Resource
    Einige neue Verfahrensprinzipien mit WirbelschichtenGekürzte Fassung des Vortrages, gehalten anläßlich des Jahrestreffens 1956 der Verfahrens-Ingenieure in Hamburg am 2. 10. 1956. Ausführliche Wiedergabe in Chem. Engng. Science 7, [1957]. (1957)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 29 (1957), S. 219-220 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Beschrieben werden die Wirbelschicht-Funkenentladung sowie die heiß-kalte Wirbelschicht als Arbeitsprinzipien, die es ermöglichen, schnelle, mehrstufige chemische Reaktionen abzubrechen und dabei instabile Zwischenprodukte zu erfassen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330290317
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