کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1772927 | 1523520 | 2016 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structure of Titan's evaporites
ترجمه فارسی عنوان
ساختار تبخیری های تیتان
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کلمات کلیدی
PC-SAFTVIMSNISTDSTRSTGCMVLEPerturbed-chain statistical associating fluid theory - تئوری مایع آماری مرتبط با زنجیره تحریک کنندهVapor–liquid equilibrium - تعادل بخار و مایعSolid–liquid equilibrium - تعادل جامد و مایعTitan, surface - تیتان، سطحSaturn, Satellites - زحل، ماهوارهEOs - عناوینSLE - لوپوس منتشر یا لوپوس اریتماتوس سیستمیکSatellites, surfaces - ماهواره ها، سطوحGlobal circulation model - مدل گردش جهانیEquation of state - معادله حالت National Institute of Standards and Technology - موسسه ی ملی استانداردها و تکنولوژیDensity functional theory - نظریه تابعی چگالیRegular solution theory - نظریه راه حل منظم
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
چکیده انگلیسی
Numerous geological features that could be evaporitic in origin have been identified on the surface of Titan. Although they seem to be water-ice poor, their main properties - chemical composition, thickness, stratification - are essentially unknown. In this paper, which follows on a previous one focusing on the surface composition (Cordier, D., Barnes, J.W., Ferreira, A.G. [2013b]. Icarus 226(2),1431-1437), we provide some answers to these questions derived from a new model. This model, based on the up-to-date thermodynamic theory known as “PC-SAFT”, has been validated with available laboratory measurements and specifically developed for our purpose. 1-D models confirm the possibility of an acetylene and/or butane enriched central layer of evaporitic deposit. The estimated thickness of this acetylene-butane layer could explain the strong RADAR brightness of the evaporites. The 2-D computations indicate an accumulation of poorly soluble species at the deposit's margin. Among these species, HCN or aerosols similar to tholins could play a dominant role. Our model predicts the existence of chemically trimodal “bathtub rings” which is consistent with what it is observed at the south polar lake Ontario Lacus. This work also provides plausible explanations to the lack of evaporites in the south polar region and to the high radar reflectivity of dry lakebeds.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 270, 15 May 2016, Pages 41-56
Journal: Icarus - Volume 270, 15 May 2016, Pages 41-56
نویسندگان
D. Cordier, T. Cornet, J.W. Barnes, S.M. MacKenzie, T. Le Bahers, D. Nna-Mvondo, P. Rannou, A.G. Ferreira,