Geologically Recent Areas as One Key Target for Identifying Active Volcanism on Venus

D’Incecco, P.; Filiberto, J.; López, I.; Eggers, G. L.; Achille, G. Di; Komatsu, G.; Gorinov, Dmitry; Monaco, Carmelo; Aveni, Simone; Mari, Nicola; Mastrogiuseppe, Marco; Cardinale, M.; Yazidi, Mayssa El

doi:10.1029/2022gl101813

Cited by 2 publications

(2 citation statements)

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“…Glasses are formed when molten material (volcanic magma or impact melts) rapidly cools below the glass transition temperature (Fisher & Schmincke, 2012; Stöffler, 1984). Volcanic processes play a major role in shaping the geology and composition of the surfaces of the terrestrial planets including Earth (Patrick & Howe, 1994), the Moon (Bhattacharya et al., 2013; Haruyama et al., 2009; Head & Wilson, 1992; Pieters et al., 2001; Schultz & Spudis, 1983), Mars (Brož et al., 2021; Garvin et al., 2000; Hauber et al., 2011; McEwen et al., 1999; Zimbelman et al., 2015), Venus (D’Incecco et al., 2022; Herrick & Hensley, 2023; Ivanov et al., 2015; Nimmo & McKenzie, 1998; Smrekar et al., 2010), and Mercury (Besse et al., 2015; Jozwiak et al., 2018; Kerber et al., 2009, 2011; Thomas et al., 2014; Weider et al., 2016).…”

Section: Introductionmentioning

confidence: 99%

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Modeling Wavelength Dependent Mid‐Infrared (5.5–25 μm) Optical Constants of Silicate Glasses: A Genetic Algorithm Approach

Varatharajan,

Sklute,

Glotch

et al. 2023

Earth and Space Science

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Wavelength‐dependent mid‐infrared (400–1,800 cm−1; 5.56–25 μm) optical constants (real and imaginary indices of refraction; n and k) are determined using reflectance spectra at a spectral sampling of 4 cm−1 for several silicate glasses of varying SiO2 wt% which include (a) basaltic volcanic glass from Kīlauea, Hawaii, (b) synthetic andesite, (c) two synthetic dacites, (d) obsidian volcanic glass from Mount Lassen, California, (e) synthetic rhyodacite, and (f) rhyolitic volcanic glass from Mexico. Because glasses are optically isotropic, no specific orientation was required for spectral measurements, and polished glass samples were measured at random orientations using micro‐FTIR spectrometer. Lorentz‐Lorenz dispersion theory and Fresnel reflectance model for high symmetry materials were used to model the optical constants by optimizing oscillator parameters in modeled spectra to match laboratory spectra. A genetic algorithm (GA) approach automatically finds the natural oscillators and their parameters for each spectrum, and then uses these parameters in a non‐linear least squares optimization routine. The study compared spectral parameters such as Christiansen feature, reststrahlen bands (RBs), and the peaks centered around 860–1,100 (peak 1) and 400–480 cm−1 (peak 2) of n and k to their respective SiO2 wt% of the glasses. CF, RBs, peak 1 of n and k, and peak 2 of n shift to higher wavenumbers with increased SiO2 wt%, whereas peak 2 of k shifts to lower wavenumbers with increased SiO2 wt%. Derived optical constants of these glasses will improve quantitative abundance mapping of volcanic materials on the surfaces of silicate targets in the Solar System.

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Section: Introductionmentioning

confidence: 99%

“…, Venus (D'Incecco et al, 2022;Herrick & Hensley, 2023;Ivanov et al, 2015;Nimmo & McKenzie, 1998;Smrekar et al, 2010), and Mercury (Besse et al, 2015;Jozwiak et al, 2018;Kerber et al, 2009Kerber et al, , 2011Thomas et al, 2014;Weider et al, 2016).…”

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confidence: 99%