Academic Journal
Effects of dust layers on thermal Emission from airless bodies
| العنوان: | Effects of dust layers on thermal Emission from airless bodies |
|---|---|
| المؤلفون: | Biele, Jens, Kührt, Ekkehard, Senshu, Hiroki, Sakatani, Naoya, Ogawa, Kazunori, Hamm, Maximilian, Grott, Matthias, Okada, Tatsuaki, Arai, Takehiko |
| بيانات النشر: | Springer |
| سنة النشر: | 2019 |
| المجموعة: | German Aerospace Center: elib - DLR electronic library |
| مصطلحات موضوعية: | Nutzerzentrum für Weltraumexperimente (MUSC), Asteroiden und Kometen, Planetenphysik |
| الوصف: | We have investigated the influence of thin thermally opaque dust layers on the thermal emission of rocks and regolith and determined the thermal response of these dust-covered surfaces to diurnal insolation cycles. Results are computed for Hayabusa2’s target asteroid (162173) Ryugu, which was observed by thermal infrared instruments on the orbiter and in situ. We show that even a very thin (10.100 μm) fine-grained porous dust layer with thermal inertia of 25 J m−2 K−1 s−1/2 can have a significant influence on surface temperatures and alter the apparent thermal inertia of the underlying material derived under the simplified assumption of a homogenous half space by more than 20%. The masking of the underlying material is complete at about 1 diurnal skin depth, corresponding to ~ 10 mm on Ryugu. Between 0.1 and 1 diurnal skin depths, we find a thermal lag smaller than what would be predicted for a surface consisting of dust only. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://elib.dlr.de/128708/1/Biele2019_Effects%20Of%20Dust%20Layers%20On%20Thermal%20Emission.pdf; Biele, Jens und Kührt, Ekkehard und Senshu, Hiroki und Sakatani, Naoya und Ogawa, Kazunori und Hamm, Maximilian und Grott, Matthias und Okada, Tatsuaki und Arai, Takehiko (2019) Effects of dust layers on thermal Emission from airless bodies. Progress in Earth and Planetary Science, 6 (48). Springer. doi:10.1186/s40645-019-0291-0 . ISSN 2197-4284. |
| الاتاحة: | https://elib.dlr.de/128708/ https://elib.dlr.de/128708/1/Biele2019_Effects%20Of%20Dust%20Layers%20On%20Thermal%20Emission.pdf |
| Rights: | cc_by |
| رقم الانضمام: | edsbas.B4BADA63 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |