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  • 1
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    Defining the scalar moment of a seismic source with a general moment tensor (1999)
    In:  Bull. Seism. Soc. Am., Leipzig, 3-4, vol. 89, no. 5, pp. 1390-1394, pp. L19606, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1999
    Keywords: Seismology ; seismic Moment ; Moment tensor ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Discriminating between large mine collapses and explosions using teleseismic P waves (2002)
    In:  Pageoph, Leipzig, 3-4, vol. 159, no. 4, pp. 803-830, pp. L19606, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 2002
    Keywords: Discrimination ; Mining geophysics ; Teleseismic events ; P-waves ; Seismology ; Nuclear explosion ; Induced seismicity ; Rock bursts (see also ERDSTOSS and GEBIRGSSCHLAG) ; PAG
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Seismic discrimination in southern Xinjiang: The 13 March 2003 Lop Nor earthquake (2005)
    In:  Bull. Seism. Soc. Am., Luxembourg, Deutsche Geophys. Gesellschaft, vol. 95, no. 1, pp. 197-211, pp. B09316, (ISSN: 1340-4202)
    Details
    Publication Date: 2005
    Keywords: Seismology ; Earthquake ; China ; Discrimination ; Nuclear explosion ; CTBT ; Magnitude ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Seismological identification of the 1998 May 28 Pakistan nuclear test (2002)
    In:  Geophys. J. Int., Leipzig, 3-4, vol. 150, no. 1, pp. 153-161, pp. L19606, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 2002
    Keywords: Nuclear explosion ; Seismology ; Earthquake ; Magnitude ; P-waves ; Discrimination ; GJI
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    The mechanisms of shallow earthquakes and the monitoring of a comprehensive test ban (1997)
    In:  Geophys. J. Int., Leipzig, 3-4, vol. 128, no. 3, pp. 701-707, pp. L19606, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1997
    Keywords: Seismology ; Nuclear explosion ; Source parameters ; Detectors ; GJI
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    mb:Ms Event Screening Revisited (2012)
    Seismological Society of America (SSA)
    Details
    Publication Date: 2012-02-01
    Description: The ratio of body-wave to surface-wave magnitude, mb:Ms, has historically been one of the most effective methods for distinguishing earthquakes from underground explosions. In the context of the Comprehensive Nuclear-Test-Ban Treaty (CTBT), mb:Ms is currently one of the experimental standard event-screening criteria being provisionally tested at the International Data Centre (IDC). An event in the IDC analyst-reviewed bulletin is screened out if the hypothesis that it is an underground explosion can be rejected with high confidence.Recently, two announced nuclear tests by the Democratic People’s Republic of Korea have raised interest because the Ms values for these explosions are high compared to historical explosions with similar mb. On an mb:Ms plot, both explosions lie close to the contemporary IDC experimental screening line, Ms=1.25mb-2.2. Although neither explosion was screened out by the IDC, the two explosions indicate that a revision of the line is advisable to ensure with high confidence that any future underground nuclear explosion is not screened out.Here, mb and Ms magnitudes for 409 past underground nuclear explosions are collated and presented. The magnitudes include new measurements, an archive of historical measurements made over the years at AWE Blacknest, and a reworking of bulletin data. The revised mb:Ms screening line based on these magnitudes is Ms=mb-0.64. The effect of the revised line on event screening at the IDC is assessed. It is found that the new criterion screens out 42% of a set of events from 2008, whereas the old criterion screened out 87%, which is a large reduction. The revised provisional mb:Ms screening line was agreed upon by the Waveform Expert Group at Working Group B of the CTBT Preparatory Commission in February 2010 and has been tested in operations at the IDC since 3 June 2010.
    Print ISSN: 0037-1106
    Electronic ISSN: 1943-3573
    Topics: Geosciences , Physics
    Published by Seismological Society of America (SSA)
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  • 7
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    The effects of enriched carbon dioxide atmospheres on plant--insect herbivore interactions (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-03-03
    Description: Little is known about the effects of enriched CO(2) atmospheres, which may exist in the next century, on natural plant-insect herbivore interactions. Larvae of a specialist insect herbivore, Junonia coenia (Lepidoptera: Nymphalidae), were reared on one of its host plants, Plantago lanceolata (Plantaginaceae), grown in either current low (350 parts per million) or high (700 ppm) CO(2) environments. Those larvae raised on high-CO(2) foliage grew more slowly and experienced greater mortality, especially in early instars, than those raised on low-CO(2) foliage. Poor larval performance on high-CO(2) foliage was probably due to the reduced foliar water and nitrogen concentrations of those plants and not to changes in the concentration of the defensive compounds, iridoid glycosides. Adult pupal weight and female fecundity were not affected by the CO(2) environment of the host plant. These results indicate that interactions between plants and herbivorous insects will be modified under the predicted CO(2) conditions of the 21st century.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fajer, E D -- Bowers, M D -- Bazzaz, F A -- New York, N.Y. -- Science. 1989 Mar 3;243(4895):1198-200.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17799901" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 8
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    A European insect species (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-10-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bowers, M D -- New York, N.Y. -- Science. 1982 Oct 8;218(4568):150.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17753442" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 9
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    The genome-wide distribution of non-B DNA motifs is shaped by operon structure and suggests the transcriptional importance of non-B DNA structures in Escherichia coli (2013)
    Oxford University Press
    Details
    Publication Date: 2013-06-28
    Description: Although the right-handed double helical B-form DNA is most common under physiological conditions, DNA is dynamic and can adopt a number of alternative structures, such as the four-stranded G-quadruplex, left-handed Z-DNA, cruciform and others. Active transcription necessitates strand separation and can induce such non-canonical forms at susceptible genomic sequences. Therefore, it has been speculated that these non-B DNA motifs can play regulatory roles in gene transcription. Such conjecture has been supported in higher eukaryotes by direct studies of several individual genes, as well as a number of large-scale analyses. However, the role of non-B DNA structures in many lower organisms, in particular proteobacteria, remains poorly understood and incompletely documented. In this study, we performed the first comprehensive study of the occurrence of B DNA–non-B DNA transition-susceptible sites (non-B DNA motifs) within the context of the operon structure of the Escherichia coli genome. We compared the distributions of non-B DNA motifs in the regulatory regions of operons with those from internal regions. We found an enrichment of some non-B DNA motifs in regulatory regions, and we show that this enrichment cannot be simply explained by base composition bias in these regions. We also showed that the distribution of several non-B DNA motifs within intergenic regions separating divergently oriented operons differs from the distribution found between convergent ones. In particular, we found a strong enrichment of cruciforms in the termination region of operons; this enrichment was observed for operons with Rho-dependent, as well as Rho-independent terminators. Finally, a preference for some non-B DNA motifs was observed near transcription factor-binding sites. Overall, the conspicuous enrichment of transition-susceptible sites in these specific regulatory regions suggests that non-B DNA structures may have roles in the transcriptional regulation of specific operons within the E. coli genome.
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
    Published by Oxford University Press
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  • 10
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    Changing the layer cake: Stratification trends in the Barents-Kara Seas (BKS) (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2023-09-06
    Description: The Barents-Kara region is an Arctic warming hotspot. It has experienced increased water column and lower troposphere temperatures, pronounced sea ice loss, and ecosystem change. Ocean stratification here is a pertinent focus for study: the strength of density stratification controls vertical mixing and the fluxes of quantities, including heat and salt, which determine the properties (temperature, salinity, and density) of water throughout the water column. At the surface, these properties influence sea ice processes and heat loss to the atmosphere in a region ostensibly linked to Northern Hemisphere mid-latitude weather. More generally, they govern the characteristics and behaviour of water masses, undergoing transformation in the BKS, that participate in Arctic and North Atlantic circulation. We use the potential energy anomaly (PEA), a metric of density stratification, to investigate changes in the region from 1993 to present day. Representing the energy required to hypothetically mix stratified water to vertical homogeneity (strongly stratified water columns require more energy to mix), PEA is calculated spatio-temporally from the ARMOR-3D reanalysis product. The rate of change of PEA with time can be expressed as the sum of contributions from physical processes that increase stratification (e.g., surface heating and sea ice melting) or decrease it (e.g., wind-driven mixing and tidal stirring), each of which can be computed from reanalysis products or model outputs. We thus determine the processes dominating BKS stratification and identify those driving long-term trends in parts of the region. Implications for ocean-atmosphere coupled interactions, water masses, and broader circulation are discussed.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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