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    • Li, Hao (3)
    • ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010) (1)
    • ANR-11-EQPX-0036,PLANEX,Planète Expérimentation: simulation et analyse in-situ en conditions extrêmes(2011) (1)
    • Andujar, Joan (1)
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    • Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)-Observatoire des Sciences de l'Univers en région Centre (OSUC) (1)
    • Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université d'Orléans (UO) (1)
    • Chen, Zimo (1)
    • Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI) (1)
    • Dai, Liye (1)
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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 3 of 3 1 Spectral Emissivity of Phonolite Lava at High Temperature Li, Hao; Andujar, Joan; Slodczyk, Aneta; De Sousa Meneses, Domingos; Scaillet, Bruno; Echegut, Patrick; Biren, Jonas; Oppenheimer, Clive In: ISSN: 0196-2892 ; IEEE Transactions on Geoscience and Remote Sensing ; https://hal-insu.archives-ouvertes.fr/insu-03433900 ; IEEE Transactions on Geoscience and Remote Sensing, Institute of Electrical and Electronics Engineers, 2021, Accepted Manuscript, pp.1-15. ⟨10.1109/TGRS.2021.3104657⟩ (2021) Abstract: International audience ; The rheology and thermodynamical evolution of magma, either in reservoirs, conduits or at the surface, are governed by temperature. To determine the field temperature, remote sensing methods based on measuring the infrared radiance are widely applied, but they are subject to assumptions and caveats that can propagate into large uncertainties. This is related to the poor knowledge of one of the most critical parameters, namely the spectral emissivity. In this work we aim at filling this gap through in situ spectral emissivity measurements performed over wide temperature (700-1600 K) and spectral ranges (1.25-25 µm) on two representative phonolitic compositions from Erebus (Antartica) and Teide (Spain) volcanoes. The laboratory spectra allow to determine precisely spectral emissivity in the thermal infrared (TIR), middle infrared (MIR), and shortwave infrared (SWIR) ranges. The results reveal the complexity and contrasted behavior of the radiative properties of the two rocks melts, despite their broadly similar composition. The spectral emissivity varies significantly as a function of temperature, composition, crystallinity, thickness, and thermal history. Altogether, the data reveal that emissivity cannot be considered as a constant value and question previous arguments that active lava always has lower emissivity than frozen lava. Finally, the laboratory-measured values of spectral emissivity were used to refine the temperature of Erebus lava lake gathered from previous remote sensing methods. Keyword: [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; [SDU]Sciences of the Universe [physics]; Emissivity; phonolite lava; radiative transfer; remote sensing; temperature measurement; thermal infrared URL: https://hal-insu.archives-ouvertes.fr/insu-03433900/document https://doi.org/10.1109/TGRS.2021.3104657 https://hal-insu.archives-ouvertes.fr/insu-03433900 https://hal-insu.archives-ouvertes.fr/insu-03433900/file/FINAL_VERSION-IEEE-2021.pdf BASE Hide details 2 Cumulative burden of lipid profiles predict future incidence of ischaemic stroke and residual risk Dai, Liye; Xu, Jie; Zhang, Yijun... In: Stroke Vasc Neurol (2021) BASE Show details 3 Negative Effects of Mobile Phone Addiction Tendency on Spontaneous Brain Microstates: Evidence From Resting-State EEG Li, Hao; Yue, Jingyi; Wang, Yufeng... In: Front Hum Neurosci (2021) BASE Show details

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