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  • American Institute of Physics  (27,145)
  • Nature Publishing Group  (26,606)
  • 2020-2023  (5)
  • 1965-1969  (53,746)
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Year
  • 1
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    Return to rapid ice loss in Greenland and record loss in 2019 detected by the GRACE-FO satellites (2020)
    Nature Publishing Group
    In:  EPIC3Communications Earth & Environment, Nature Publishing Group, 1(1), pp. 1-8
    Details
    Publication Date: 2022-06-20
    Description: Between 2003-2016, the Greenland ice sheet (GrIS) was one of the largest contributors to sea level rise, as it lost about 255 Gt of ice per year. This mass loss slowed in 2017 and 2018 to about 100 Gt yr−1. Here we examine further changes in rate of GrIS mass loss, by analyzing data from the GRACE-FO (Gravity Recovery and Climate Experiment – Follow On) satellite mission, launched in May 2018. Using simulations with regional climate models we show that the mass losses observed in 2017 and 2018 by the GRACE and GRACE-FO missions are lower than in any other two year period between 2003 and 2019, the combined period of the two missions. We find that this reduced ice loss results from two anomalous cold summers in western Greenland, compounded by snow-rich autumn and winter conditions in the east. For 2019, GRACE-FO reveals a return to high melt rates leading to a mass loss of 223 ± 12 Gt month−1 during the month of July alone, and a record annual mass loss of 532 ± 58 Gt yr−1.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 2
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    Arctic glaciers record wavier circumpolar winds (2022)
    Nature Publishing Group
    In:  EPIC3Nature Climate Change, Nature Publishing Group, 12(3), pp. 249-255
    Details
    Publication Date: 2022-06-20
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 3
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    Small sinking particles control anammox rates in the Peruvian oxygen minimum zone (2021)
    Nature Publishing Group
    In:  EPIC3Nature Communications, Nature Publishing Group, 12(1), pp. 1-12
    Details
    Publication Date: 2022-08-15
    Description: Anaerobic oxidation of ammonium (anammox) in oxygen minimum zones (OMZs) is a major pathway of oceanic nitrogen loss. Ammonium released from sinking particles has been suggested to fuel this process. During cruises to the Peruvian OMZ in April–June 2017 we found that anammox rates are strongly correlated with the volume of small particles (128–512 µm), even though anammox bacteria were not directly associated with particles. This suggests that the relationship between anammox rates and particles is related to the ammonium released from particles by remineralization. To investigate this, ammonium release from particles was modelled and theoretical encounters of free-living anammox bacteria with ammonium in the particle boundary layer were calculated. These results indicated that small sinking particles could be responsible for ~75% of ammonium release in anoxic waters and that free-living anammox bacteria frequently encounter ammonium in the vicinity of smaller particles. This indicates a so far underestimated role of abundant, slow-sinking small particles in controlling oceanic nutrient budgets, and furthermore implies that observations of the volume of small particles could be used to estimate N-loss across large areas.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , NonPeerReviewed
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  • 4
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    Non-syntrophic methanogenic hydrocarbon degradation by an archaeal species (2022)
    Nature Publishing Group
    In:  EPIC3Nature, Nature Publishing Group, 601(7892), pp. 257-262
    Details
    Publication Date: 2022-08-11
    Description: The methanogenic degradation of oil hydrocarbons can proceed through syntrophic partnerships of hydrocarbon-degrading bacteria and methanogenic archaea1,2,3. However, recent culture-independent studies have suggested that the archaeon ‘Candidatus Methanoliparum’ alone can combine the degradation of long-chain alkanes with methanogenesis4,5. Here we cultured Ca. Methanoliparum from a subsurface oil reservoir. Molecular analyses revealed that Ca. Methanoliparum contains and overexpresses genes encoding alkyl-coenzyme M reductases and methyl-coenzyme M reductases, the marker genes for archaeal multicarbon alkane and methane metabolism. Incubation experiments with different substrates and mass spectrometric detection of coenzyme-M-bound intermediates confirm that Ca. Methanoliparum thrives not only on a variety of long-chain alkanes, but also on n-alkylcyclohexanes and n-alkylbenzenes with long n-alkyl (C≥13) moieties. By contrast, short-chain alkanes (such as ethane to octane) or aromatics with short alkyl chains (C≤12) were not consumed. The wide distribution of Ca. Methanoliparum4,5,6 in oil-rich environments indicates that this alkylotrophic methanogen may have a crucial role in the transformation of hydrocarbons into methane.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , NonPeerReviewed
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  • 5
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    The impact of faulting complexity and type on earthquake rupture dynamics (2022)
    Nature Publishing Group
    Details
    Publication Date: 2022-10-31
    Description: The statistical properties of seismicity are known to be affected by several factors such as the rheological parameters of rocks. We analysed the earthquake double-couple as a function of the faulting type. Here we show that it impacts the moment tensors of earthquakes: thrust- faulting events are characterized by higher double-couple components with respect to strike- slip- and normal-faulting earthquakes. Our results are coherent with the stress dependence of the scaling exponent of the Gutenberg-Richter law, which is anticorrelated to the double- couple. We suggest that the structural and tectonic control of seismicity may have its origin in the complexity of the seismogenic source marked by the width of the cataclastic damage zone and by the slip of different fault planes during the same seismic event; the sharper and concentrated the slip as along faults, the higher the double-couple. This phenomenon may introduce bias in magnitude estimation, with possible impact on seismic forecasting.
    Description: Published
    Description: 258
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: double couple ; damage zone ; different fault type ; seismicity ; tectonics ; fault type ; seismicity ; 04.06. Seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
    Electronic Resource
    Electronic Resource
    100 Years Ago (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 1246-1246 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A DEDUCTION FROM DARWIN'S THEORY THERE is one important consequence deducible fiom Danvin's profound theory which has not yet been noticed so far as I am aware. The theory is capable under certain reasonable conditions of accounting for the fact that the highest forms of civilisation have appeared ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2241246b0
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  • 7
    Electronic Resource
    Electronic Resource
    Curbs on Panic and Pesticides (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 1249-1249 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] CERTAIN uses of DDT and other organochlorine pesticides in Britain are to be banned as soon as possible, following acceptance by the Minister of Agriculture of the recommendations made by the Advisory Committee on Pesticides and Other Toxic Chemicals. The committee found no evidence that the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2241249a0
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  • 8
    Electronic Resource
    Electronic Resource
    Archaeology: How the Physicist Helps (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 1252-1252 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] TWENTY years of research on carbon dating were marked in London on December 11 and 12 by a joint meeting of the Royal Society and the British Academy on the impact of the natural sciences on archaeology. Professor W. F. Libby (University of California, Los Angeles) began the meeting by recounting ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2241252a0
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  • 9
    Electronic Resource
    Electronic Resource
    Public Health: Hereford's “Woolly Bear” (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 1254-1255 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MILITANT council tenants in Hereford have been responsible for drawing attention this autumn to a local plague of "woolly bear". ?? fact, the pest is a well known suburban resident over a wide area of southern Britain, from the Severn to the Wash, but it seems recently to have strayed a little ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2241254b0
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  • 10
    Electronic Resource
    Electronic Resource
    Sombre Greeting from Abroad (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 1250-1250 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DR PHILIP HANDLER, president of the US National Academy of Sciences, chilled the bones of some of those who listened to him speak at the dinner held by the Biochemical Society in London on December 17 to celebrate the 500th meeting of the society. Dr Handler warned his British colleagues against ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2241250a0
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