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  • 1
    ISSN: 1573-157X
    Keywords: Nocera Umbra ; site effects ; weak motions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract During the ML = 5.6 and 5.8 earthquakes occurredin central Italy on 26 September 1997 the historiccentre of Nocera Umbra, lying on top of a 120 m highhill, was diffusely damaged (VII-VIII degrees of MCSintensity). Some recently built houses in the modernpart of the town suffered an even higher level ofdamage. A temporary seismic array was deployed toinvestigate a possible correlation between localamplifications of ground motion in this area and theobserved pattern of damage. After a geologic andmacroseismic survey, eight sites were selected asrepresentative of different local conditions, such astopographic irregularities, sharp hard-to-softlithology transitions, alluvium-filled valleys, andboth undisturbed and deformed rocks.Horizontal-to-vertical spectral ratios for bothmicrotremor and earthquake recordings, as well asspectral ratios referred to undisturbed rock sites,were used to quantify local variations of groundmotion. In spite of the diffuse damage in the historiccentre of Nocera Umbra, a small amplification isobserved at the stations on the hill's top. Thissuggests that the higher vulnerability of the ancientbuildings mainly accounts for the diffuse damage inthat part of the town. In the frequency band ofengineering interest (1 to 10 Hz) the largestamplifications of ground motion are found at softsites: in the Topino river valley, where many episodesof severe structural damage occurred, spectralamplification is significant over a broad frequencyband ranging from 2 Hz to more than 20 Hz. Inparticular, in the central part of the valley highamplification (〉 4) is found from 3 to 10 Hz,reaching a maximum of 20 around 4 Hz. At the edge ofthe valley, close to the soil-to-rock transition,amplification is as large as 10 in a frequency bandranging from 4 to more than 20 Hz. A significantamplification (by a factor of 10 around 10 Hz) isobserved also at one of the rock sites, possibly dueto the presence of a cataclastic zone related to theactivity of a regional fault that altered themechanical properties of the rock.
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  • 2
    ISSN: 1573-157X
    Keywords: fault zone ; ground motion ; Nocera Umbra ; site effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract During the two mainshocks of September 26, 1997 inthe Umbria-Marche border a strong-motion accelerographrecorded peak ground accelerations as large as 0.6 g,approximately, in the town of Nocera Umbra, atdistances of 10 to 15 km from the epicentres. Thisvalue is significantly larger than expected on thebasis of the usual regressions with magnitude anddistance. A broad-band amplification up to a factor of10 was consistently estimated in previous papers,using both weak and strong motion data recorded at theaccelerograph site during local moderate earthquakes.To study the cause of this amplification we deployedsix seismologic stations across the tectonic contactbetween the Ceno-Mesozoic limestone and the Mesozoicmarly sandstone where the accelerograph is installed.Seismograms of 21 shallow aftershocks in the magnituderange from 2.2 to 4.0 and a subcrustal Mw = 5.3event are analysed. Regardless of epicentre location,waveforms show a large complexity in an approximately200 m wide band adjacent to the tectonic contact. Thisis interpreted as the effect of trapped waves in thehighly fractured, lower velocity materials within thefault zone.
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  • 3
    Publication Date: 2012-04-03
    Description: IL-17-producing CD4+ T helper cells (TH17) have been extensively investigated in mouse models of autoimmunity. However, the requirements for differentiation and the properties of pathogen-induced human TH17 cells remain poorly defined. Using an approach that combines the in vitro priming of naive T cells with the ex vivo analysis of memory T cells, we describe here two types of human TH17 cells with distinct effector function and differentiation requirements. Candida albicans-specific TH17 cells produced IL-17 and IFN-gamma, but no IL-10, whereas Staphylococcus aureus-specific TH17 cells produced IL-17 and could produce IL-10 upon restimulation. IL-6, IL-23 and IL-1beta contributed to TH17 differentiation induced by both pathogens, but IL-1beta was essential in C. albicans-induced TH17 differentiation to counteract the inhibitory activity of IL-12 and to prime IL-17/IFN-gamma double-producing cells. In addition, IL-1beta inhibited IL-10 production in differentiating and in memory TH17 cells, whereas blockade of IL-1beta in vivo led to increased IL-10 production by memory TH17 cells. We also show that, after restimulation, TH17 cells transiently downregulated IL-17 production through a mechanism that involved IL-2-induced activation of STAT5 and decreased expression of ROR-gammat. Taken together these findings demonstrate that by eliciting different cytokines C. albicans and S. aureus prime TH17 cells that produce either IFN-gamma or IL-10, and identify IL-1beta and IL-2 as pro- and anti-inflammatory regulators of TH17 cells both at priming and in the effector phase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zielinski, Christina E -- Mele, Federico -- Aschenbrenner, Dominik -- Jarrossay, David -- Ronchi, Francesca -- Gattorno, Marco -- Monticelli, Silvia -- Lanzavecchia, Antonio -- Sallusto, Federica -- England -- Nature. 2012 Apr 26;484(7395):514-8. doi: 10.1038/nature10957.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Research in Biomedicine, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland. christina.zielinski@charite.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22466287" target="_blank"〉PubMed〈/a〉
    Keywords: Antigen Presentation/immunology ; Candida albicans/*immunology ; Cell Differentiation ; Down-Regulation ; Humans ; Immunologic Memory/immunology ; Interferon-gamma/*biosynthesis ; Interleukin-10/*biosynthesis ; Interleukin-17/biosynthesis ; Interleukin-1beta/*immunology ; Interleukin-2/antagonists & inhibitors/immunology ; Lymphocyte Activation ; Nuclear Receptor Subfamily 1, Group F, Member 3/genetics/metabolism ; STAT5 Transcription Factor/metabolism ; Staphylococcus aureus/*immunology ; Th17 Cells/cytology/*immunology/*metabolism/secretion ; Tumor Necrosis Factor-alpha/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2015-07-15
    Description: Human inborn errors of immunity mediated by the cytokines interleukin-17A and interleukin-17F (IL-17A/F) underlie mucocutaneous candidiasis, whereas inborn errors of interferon-gamma (IFN-gamma) immunity underlie mycobacterial disease. We report the discovery of bi-allelic RORC loss-of-function mutations in seven individuals from three kindreds of different ethnic origins with both candidiasis and mycobacteriosis. The lack of functional RORgamma and RORgammaT isoforms resulted in the absence of IL-17A/F-producing T cells in these individuals, probably accounting for their chronic candidiasis. Unexpectedly, leukocytes from RORgamma- and RORgammaT-deficient individuals also displayed an impaired IFN-gamma response to Mycobacterium. This principally reflected profoundly defective IFN-gamma production by circulating gammadelta T cells and CD4(+)CCR6(+)CXCR3(+) alphabeta T cells. In humans, both mucocutaneous immunity to Candida and systemic immunity to Mycobacterium require RORgamma, RORgammaT, or both.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4668938/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4668938/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Okada, Satoshi -- Markle, Janet G -- Deenick, Elissa K -- Mele, Federico -- Averbuch, Dina -- Lagos, Macarena -- Alzahrani, Mohammed -- Al-Muhsen, Saleh -- Halwani, Rabih -- Ma, Cindy S -- Wong, Natalie -- Soudais, Claire -- Henderson, Lauren A -- Marzouqa, Hiyam -- Shamma, Jamal -- Gonzalez, Marcela -- Martinez-Barricarte, Ruben -- Okada, Chizuru -- Avery, Danielle T -- Latorre, Daniela -- Deswarte, Caroline -- Jabot-Hanin, Fabienne -- Torrado, Egidio -- Fountain, Jeffrey -- Belkadi, Aziz -- Itan, Yuval -- Boisson, Bertrand -- Migaud, Melanie -- Arlehamn, Cecilia S Lindestam -- Sette, Alessandro -- Breton, Sylvain -- McCluskey, James -- Rossjohn, Jamie -- de Villartay, Jean-Pierre -- Moshous, Despina -- Hambleton, Sophie -- Latour, Sylvain -- Arkwright, Peter D -- Picard, Capucine -- Lantz, Olivier -- Engelhard, Dan -- Kobayashi, Masao -- Abel, Laurent -- Cooper, Andrea M -- Notarangelo, Luigi D -- Boisson-Dupuis, Stephanie -- Puel, Anne -- Sallusto, Federica -- Bustamante, Jacinta -- Tangye, Stuart G -- Casanova, Jean-Laurent -- 8UL1TR000043/TR/NCATS NIH HHS/ -- HHSN272200900044C/AI/NIAID NIH HHS/ -- HHSN272200900044C/PHS HHS/ -- R37 AI095983/AI/NIAID NIH HHS/ -- R37AI095983/AI/NIAID NIH HHS/ -- T32 AI007512/AI/NIAID NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Aug 7;349(6248):606-13. doi: 10.1126/science.aaa4282. Epub 2015 Jul 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065, USA. Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan. ; St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065, USA. jmarkle@rockefeller.edu jean-laurent.casanova@rockefeller.edu. ; Immunology Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales, Australia. St Vincent's Clinical School, University of New South Wales, Sydney, New South Wales, Australia. ; Institute for Research in Biomedicine, University of Italian Switzerland, Bellinzona, Switzerland. ; Department of Pediatrics, Hadassah University Hospital, Jerusalem, Israel. ; Department of Immunology, School of Medicine, Universidad de Valparaiso, Santiago, Chile. Department of Pediatrics, Padre Hurtado Hospital and Clinica Alemana, Santiago, Chile. ; Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia. ; Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia. Department of Pediatrics, Prince Naif Center for Immunology Research, College of Medicine, King Saud University, Riyadh, Saudi Arabia. ; Department of Pediatrics, Prince Naif Center for Immunology Research, College of Medicine, King Saud University, Riyadh, Saudi Arabia. ; Immunology Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales, Australia. ; Institut Curie, INSERM U932, Paris, France. ; Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA. ; Caritas Baby Hospital, Post Office Box 11535, Jerusalem, Israel. ; Department of Immunology, School of Medicine, Universidad de Valparaiso, Santiago, Chile. ; St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065, USA. ; Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM UMR 1163, Paris, France. Paris Descartes University, Imagine Institute, Paris, France. ; Trudeau Institute, Saranac Lake, NY 12983, USA. ; La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA. ; Department of Radiology, Assistance Publique-Hopitaux de Paris (AP-HP), Necker Hospital for Sick Children, Paris, France. ; Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, Victoria, Australia. ; Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria, Australia. Australian Research Council Centre of Excellence for Advanced Molecular Imaging, Monash University, Clayton, Victoria, Australia. Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK. ; Laboratoire Dynamique du Genome et Systeme Immunitaire, INSERM UMR 1163, Universite Paris Descartes-Sorbonne Paris Cite, Imagine Institute, Paris, France. ; Laboratoire Dynamique du Genome et Systeme Immunitaire, INSERM UMR 1163, Universite Paris Descartes-Sorbonne Paris Cite, Imagine Institute, Paris, France. Pediatric Hematology-Immunology Unit, AP-HP, Necker Hospital for Sick Children, Paris, France. ; Institute of Cellular Medicine, Newcastle University and Great North Children's Hospital, Newcastle upon Tyne NE4 6BE, UK. ; Laboratory of Lymphocyte Activation and Susceptibility to EBV Infection, INSERM UMR 1163, Universite Paris Descartes-Sorbonne Paris Cite, Imagine Institute, Paris, France. ; Department of Paediatric Allergy Immunology, University of Manchester, Royal Manchester Children's Hospital, Manchester, UK. ; St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065, USA. Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM UMR 1163, Paris, France. Paris Descartes University, Imagine Institute, Paris, France. Pediatric Hematology-Immunology Unit, AP-HP, Necker Hospital for Sick Children, Paris, France. Center for the Study of Primary Immunodeficiencies, AP-HP, Necker Hospital for Sick Children, Paris, France. ; Department of Pediatrics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan. ; St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065, USA. Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM UMR 1163, Paris, France. Paris Descartes University, Imagine Institute, Paris, France. ; Division of Immunology, Boston Children's Hospital, Boston, MA 02115, USA. Manton Center for Orphan Disease Research, Children's Hospital, Boston, MA 02115, USA. ; Institute for Research in Biomedicine, University of Italian Switzerland, Bellinzona, Switzerland. Center of Medical Immunology, Institute for Research in Biomedicine, University of Italian Switzerland, Bellinzona, Switzerland. ; St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065, USA. Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM UMR 1163, Paris, France. Paris Descartes University, Imagine Institute, Paris, France. Center for the Study of Primary Immunodeficiencies, AP-HP, Necker Hospital for Sick Children, Paris, France. ; St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065, USA. Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM UMR 1163, Paris, France. Paris Descartes University, Imagine Institute, Paris, France. Pediatric Hematology-Immunology Unit, AP-HP, Necker Hospital for Sick Children, Paris, France. Howard Hughes Medical Institute, New York, NY 10065, USA. jmarkle@rockefeller.edu jean-laurent.casanova@rockefeller.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26160376" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Candida albicans/*immunology ; Candidiasis, Chronic Mucocutaneous/complications/*genetics/immunology ; Cattle ; Child ; Child, Preschool ; DNA Mutational Analysis ; Exome/genetics ; Female ; Gene Rearrangement, alpha-Chain T-Cell Antigen Receptor ; Humans ; Immunity/*genetics ; Interferon-gamma/immunology ; Interleukin-17/immunology ; Mice ; Mutation ; Mycobacterium bovis/immunology/isolation & purification ; Mycobacterium tuberculosis/immunology/isolation & purification ; Nuclear Receptor Subfamily 1, Group F, Member 3/*genetics ; Pedigree ; Receptors, Antigen, T-Cell, alpha-beta/genetics/immunology ; Receptors, Antigen, T-Cell, gamma-delta/genetics/immunology ; Severe Combined Immunodeficiency/*genetics ; T-Lymphocytes/immunology ; Thymus Gland/abnormalities/immunology ; Tuberculosis, Bovine/*genetics/immunology ; Tuberculosis, Pulmonary/*genetics/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2014-12-06
    Description: Distinct types of CD4(+) T cells protect the host against different classes of pathogens. However, it is unclear whether a given pathogen induces a single type of polarized T cell. By combining antigenic stimulation and T cell receptor deep sequencing, we found that human pathogen- and vaccine-specific T helper 1 (T(H)1), T(H)2, and T(H)17 memory cells have different frequencies but comparable diversity and comprise not only clones polarized toward a single fate, but also clones whose progeny have acquired multiple fates. Single naive T cells primed by a pathogen in vitro could also give rise to multiple fates. Our results unravel an unexpected degree of interclonal and intraclonal functional heterogeneity of the human T cell response and suggest that polarized responses result from preferential expansion rather than priming.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Becattini, Simone -- Latorre, Daniela -- Mele, Federico -- Foglierini, Mathilde -- De Gregorio, Corinne -- Cassotta, Antonino -- Fernandez, Blanca -- Kelderman, Sander -- Schumacher, Ton N -- Corti, Davide -- Lanzavecchia, Antonio -- Sallusto, Federica -- New York, N.Y. -- Science. 2015 Jan 23;347(6220):400-6. doi: 10.1126/science.1260668. Epub 2014 Dec 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Research in Biomedicine, Bellinzona, Universita della Svizzera Italiana, Lugano, Switzerland. Institute of Microbiology, ETH Zurich, Zurich, Switzerland. ; Institute for Research in Biomedicine, Bellinzona, Universita della Svizzera Italiana, Lugano, Switzerland. ; Division of Immunology, Netherlands Cancer Institute, Amsterdam, Netherlands. ; Institute for Research in Biomedicine, Bellinzona, Universita della Svizzera Italiana, Lugano, Switzerland. federica.sallusto@irb.usi.ch.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25477212" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; CD4-Positive T-Lymphocytes/*immunology ; Candida albicans/*immunology ; Cells, Cultured ; Clone Cells ; High-Throughput Nucleotide Sequencing ; Host-Pathogen Interactions/*immunology ; Humans ; *Immunologic Memory ; Lymphocyte Activation ; Molecular Sequence Data ; Mycobacterium tuberculosis/*immunology ; Receptors, Antigen, T-Cell/genetics ; T-Lymphocyte Subsets/*immunology ; Th1 Cells/immunology ; Th17 Cells/immunology ; Th2 Cells/immunology ; Vaccines/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2017-04-04
    Description: During three moderate-magnitude earthquakes occurred in September–October 1997 in the central Apennines, Italy, accelerations larger than 0.5 g were recorded in the town of Nocera Umbra, 10 to 15 km N-NW of the epicenters. The accelerograph is sited in a fault zone, close to a N30 E tectonic contact. Six temporary seismological stations installed across the fault recorded 82 aftershocks occurred in two seismogenic zones: the Colfiorito-Sellano area, S-SE of the array, and the Gualdo Tadino area, to the north. The array data reveal large variations in terms of both peak ground motions and spectral amplitudes. Within the fault zone, amplifications show a strong dependence on the source azimuth. At the accelerograph site, the effects are particularly large for events from S-SE: peak ground motions are a factor of 14 larger than those of a reference site and conventional spectral ratios attain amplitudes as large as 50 at 7 Hz along the N30 E direction of motion, parallel to the strike of the fault. Nineteen strong motion accelerograms were then used to compare ground motion properties between weak and strong events up to M0 = 1.2 1025 dyn cm. A particle motion analysis shows that the directional effect is also present in the strongest motions, even though the amplification of peak ground motion decreases when M0 increases. Results from stochastic simulations indicate that such a behavior is not due to nonlinearity: applying the empirical weak motion transfer functions in a purely linear model the observed peak ground motions of the largest events are fit satisfactorily.
    Description: Published
    Description: 2156
    Description: JCR Journal
    Description: reserved
    Keywords: site effects ; fault zone ; 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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  • 7
    Publication Date: 2017-04-04
    Description: During the two mainshocks of September 26, 1997 in the Umbria-Marche border a strong-motion accelerograph recorded peak ground accelerations as large as 0.6 g, approximately, in the town of Nocera Umbra, at distances of 10 to 15 km from the epicentres. This value is significantly larger than expected on the basis of the usual regressions with magnitude and distance. A broad-band amplification up to a factor of 10 was consistently estimated in previous papers, using both weak and strong motion data recorded at the accelerograph site during local moderate earthquakes. To study the cause of this amplification we deployed six seismologic stations across the tectonic contact between the Ceno-Mesozoic limestone and the Mesozoic marly sandstone where the accelerograph is installed. Seismograms of 21 shallow aftershocks in the magnitude range from 2.2 to 4.0 and a subcrustal Mw = 5.3 event are analysed. Regardless of epicentre location, waveforms show a large complexity in an approximately 200 m wide band adjacent to the tectonic contact. This is interpreted as the effect of trapped waves in the highly fractured, lower velocity materials within the fault zone.
    Description: Published
    Description: 543-554
    Description: JCR Journal
    Description: reserved
    Keywords: site effects ; central Italy ; 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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  • 8
    Publication Date: 2017-04-04
    Description: During the ML = 5.6 and 5.8 earthquakes occurred in central Italy on 26 September 1997 the historic centre of Nocera Umbra, lying on top of a 120 m high hill, was diffusely damaged (VII-VIII degrees of MCS intensity). Some recently built houses in the modern part of the town suffered an even higher level of damage. A temporary seismic array was deployed to investigate a possible correlation between local amplifications of ground motion in this area and the observed pattern of damage. After a geologic and macroseismic survey, eight sites were selected as representative of different local conditions, such as topographic irregularities, sharp hard-to-soft lithology transitions, alluvium-filled valleys, and both undisturbed and deformed rocks. Horizontal-to-vertical spectral ratios for both microtremor and earthquake recordings, as well as spectral ratios referred to undisturbed rock sites, were used to quantify local variations of ground motion. In spite of the diffuse damage in the historic centre of Nocera Umbra, a small amplification is observed at the stations on the hill’s top. This suggests that the higher vulnerability of the ancient buildings mainly accounts for the diffuse damage in that part of the town. In the frequency band of engineering interest (1 to 10 Hz) the largest amplifications of ground motion are found at soft sites: in the Topino river valley, where many episodes of severe structural damage occurred, spectral amplification is significant over a broad frequency band ranging from 2 Hz to more than 20 Hz. In particular, in the central part of the valley high amplification (〉 4) is found from 3 to 10 Hz, reaching a maximum of 20 around 4 Hz. At the edge of the valley, close to the soil-to-rock transition, amplification is as large as 10 in a frequency band ranging from 4 to more than 20 Hz. A significant amplification (by a factor of 10 around 10 Hz) is observed also at one of the rock sites, possibly due to the presence of a cataclastic zone related to the activity of a regional fault that altered the mechanical properties of the rock.
    Description: Published
    Description: 555-565
    Description: JCR Journal
    Description: reserved
    Keywords: site effects ; Nocera Umbra ; 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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  • 9
    Publication Date: 2023-01-27
    Description: Il giorno 9 novembre 2022, alle 06:07:24 UTC (07:07:24 ora locale) un terremoto di magnitudo momento (MW) pari a 5.5 ha interessato la Costa Marchigiana Pesarese (Pesaro Urbino). A causa della magnitudo del mainshock e del livello di danneggiamento riscontrato, l’INGV ha attivato il gruppo operativo EMERSITO (http://emersitoweb.rm.ingv.it/index.php/it/), il cui obiettivo è di svolgere e coordinare le campagne di monitoraggio per studi di effetti di sito e di microzonazione sismica. Il gruppo operativo ha provveduto all’installazione di una rete sismica temporanea nel territorio del comune di Ancona; molte delle stazioni sismiche sono state installate in corrispondenza di edifici pubblici (scuole, Tribunale, Marina Militare, strutture religiose), grazie alla collaborazione con la sede INGV di Ancona, con la Protezione Civile Regione Marche, la Marina militare e la Capitaneria di Porto. Nel presente Report vengono brevemente riassunte le attività già svolte (si vedano i Report precedenti), discusse le analisi dei dati raccolti e mostrati alcuni risultati preliminari riguardanti la rete sismica temporanea. Sono state effettuate le seguente analisi preliminari: qualità delle registrazioni; rapporti spettrali su rumore sismico ambientale e su una selezione di terremoti registrati; analisi della dipendenza dei risultati dei rapporti spettrali dalla direzione del moto sismico (polarizzazione del segnale); calcolo dei meccanismi focali su alcuni eventi selezionati. Infine è stato prodotto un modello geologico semplificato, inclusivo delle informazioni derivanti dalle indagini geologiche e geofisiche preesistenti, che fornisce una chiave interpretativa dei risultati ottenuti.
    Description: Istituto Nazionale di Geofisica e Vulcanologia
    Description: Unpublished
    Description: 2SR TERREMOTI - Gestione delle emergenze sismiche e da maremoto
    Keywords: site effects ; emergency intervention ; microzoning studies ; 04.06. Seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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