Study of Chang’E-2 Microwave Radiometer Data in the Lunar Polar Region
المؤلفون المشاركون
Yang, Fan
Xu, Yi
Chan, Kwing Lam
Zhang, Xiaoping
Hu, Guoping
Li, Yong
المصدر
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-04-24
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
The Chang’E-2 (CE-2) four-channel microwave radiometer (MRM) data with frequencies of 3 GHz, 7.8 GHz, 19.35 GHz, and 37 GHz have been used to investigate the properties of lunar surface such as regolith thickness, dielectric constant, and titanium abundance within a depth of several meters in middle and low latitudes.
The purpose of this work is to take a close look at MRM data in the polar regions of the Moon and analyze the characteristics of the brightness temperature (TB) in permanently shadowed regions (PSRs), especially where evidence of water ice has been found.
First, the comparisons of brightness temperature values in the polar region and in low latitudes show that (1) the periodic diurnal (day/night) variation of TB becomes weak in high latitudes since topography plays a dominant role in determining TB in polar region and (2) seasonal effects are more recognizable in polar region than in low latitudes due to the weak illumination condition.
Second, even without direct sun illumination, significant seasonal variations of TBs are observed in PSRs, probably caused by the scattering flux from neighboring topography.
TB Ratio (TBR) between channel 1 and channel 4, which indicates the differences of TB at different depths of lunar regolith, is higher and shows stronger seasonal variation in PSR than regions with direct illumination.
Third, overall the distribution of high TBR values is in consistence with the water ice distributions obtained by the Moon Mineralogy Mapper instrument, the LAMP UV spectra, and the Lunar Prospector Neutron Spectrometer.
The proportion of the summation over area with water ice proof in the regions of interest is 0.89 and 0.56 in south pole and north pole, respectively.
The causes of the correlation of high TBR between different microwave frequencies and stability of water ice deposits still require further investigation, but MRM data shows unique characteristic in PSRs and could provide important information about the upper few meters of lunar regolith.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Yang, Fan& Xu, Yi& Chan, Kwing Lam& Zhang, Xiaoping& Hu, Guoping& Li, Yong. 2019. Study of Chang’E-2 Microwave Radiometer Data in the Lunar Polar Region. Advances in Astronomy،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1114387
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Yang, Fan…[et al.]. Study of Chang’E-2 Microwave Radiometer Data in the Lunar Polar Region. Advances in Astronomy No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1114387
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Yang, Fan& Xu, Yi& Chan, Kwing Lam& Zhang, Xiaoping& Hu, Guoping& Li, Yong. Study of Chang’E-2 Microwave Radiometer Data in the Lunar Polar Region. Advances in Astronomy. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1114387
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1114387
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر