Analysis of lunar samples returned by the US Apollo missions revealed that the lunar highlands consist of anorthosite, plagioclase, pyroxene, and olivine; also, the lunar maria are composed of materials such as basalt and ilmenite. More recently, the remote sensing approach has enabled reduction of ...
Analysis of lunar samples returned by the US Apollo missions revealed that the lunar highlands consist of anorthosite, plagioclase, pyroxene, and olivine; also, the lunar maria are composed of materials such as basalt and ilmenite. More recently, the remote sensing approach has enabled reduction of the time required to investigate the entire lunar surface, compared to the approach of returning samples. Moreover, remote sensing has also made it possible to determine the existence of specific minerals and to examine wide areas. In this paper, an investigation was performed on the reflectance distribution and its trend. The results were applied to the example of the double ray stretched in parallel lines from the Tycho crater to the third-quadrant of Mare Nubium. Basic research and background information for the investigation of lunar surface characteristics is also presented. For this research, resources aboard the SELenological and ENgineering Explorer (SELENE), a Japanese lunar probe, were used. These included the Multiband Imager (MI) in the Lunar Imager/Spectrometer (LISM). The data of these instruments were edited through the toolkit, an image editing and analysis tool, Exelis Visual Information Solution (ENVI).
Analysis of lunar samples returned by the US Apollo missions revealed that the lunar highlands consist of anorthosite, plagioclase, pyroxene, and olivine; also, the lunar maria are composed of materials such as basalt and ilmenite. More recently, the remote sensing approach has enabled reduction of the time required to investigate the entire lunar surface, compared to the approach of returning samples. Moreover, remote sensing has also made it possible to determine the existence of specific minerals and to examine wide areas. In this paper, an investigation was performed on the reflectance distribution and its trend. The results were applied to the example of the double ray stretched in parallel lines from the Tycho crater to the third-quadrant of Mare Nubium. Basic research and background information for the investigation of lunar surface characteristics is also presented. For this research, resources aboard the SELenological and ENgineering Explorer (SELENE), a Japanese lunar probe, were used. These included the Multiband Imager (MI) in the Lunar Imager/Spectrometer (LISM). The data of these instruments were edited through the toolkit, an image editing and analysis tool, Exelis Visual Information Solution (ENVI).
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제안 방법
Among lunar topographies, the lunar crater rays developed from impact craters and their ejecta have been of interest to scientists for a long time. In order to find out the composition of these lunar features, analyses were performed on the samples obtained from the lunar landing sites and other sites nearby, to determine the lunar composition (Turkevich 1973; Wieczorek et al. 2006). However, after application of remote sensing technology, it was possible to develop a map of the composition and mineral distribution of the entire lunar surface, using the data from satellites orbiting the Moon.
However, after application of remote sensing technology, it was possible to develop a map of the composition and mineral distribution of the entire lunar surface, using the data from satellites orbiting the Moon. This technology provides several advantages: fast and easy data acquisition, comparison of relative ages using reflectance, and enabling investigation of wide areas. Remote sensing has become an essential part of planetary exploration and the more detailed investigations are being performed for topographic features from large scales (lunar highlands or lunar maria) to the scale of lava tubes fit for human survival (Hong et al.
is the maximum value of the 950 nm/750 nm ratio. Investigation of the study area was performed based on the data indicating the 750 nm reflectance, 950 nm/750 nm reflectance ratio, and optical maturity image file obtained from ENVI.
There are several advantages in obtaining the reflectance data through remote sensing: enabling topographical analysis of study sites, reducing the time needed for geological investigation, and enabling investigation of wide areas at a time. In this paper, an investigation was performed for sites from the scale of the double ray located in the northwest of the Tycho crater, to the scale of a typical crater, based on the degree of reflectance. It was found that the trend of reflectance distribution was similar for these sites.
이론/모형
For research on the origin of lunar rays, the wavelength data required to calculate the optical maturity were obtained from image editing and analysis tool (Exelis Visual Information Solution: ENVI), the data of the Multiband Imager (MI) onboard the Japanese lunar probe called the SELenological and ENgineering Explorer, or SELENE (Kodama et al. 2010). The equation to determine optical maturity (Eq.
성능/효과
The difference in reflectance among Group A, B, and C is due to the partial difference in chemical composition. Comparison between the actual compositions of highlands and lunar maria reveals that the highlands are richer in Ca and Al by about 4% and 10%, respectively, than the lunar maria. In contrast, the lunar maria are richer in Fe and Ti by about 9% and 3%, respectively, than the highlands (Turkevich 1973).
참고문헌 (9)
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Ohtake M, Haruyama J, Matsunaga T, Yokota Y, Morota T, et al., Performance and scientific objectives of the SELENE (KAGUYA) Multiband Imager, Earth, Planets Space 60, 257-264 (2008). http://dx.doi.org/10.1186/BF03352789
Pieters CM, Adams JB, Mouginis-Mark PJ, Zisk SH, Smith MO, et al., The nature of crater rays: The Copernicus example, J. Geophys. Res. 90, 12393-12413 (1985). http://dx.doi.org/10.1029/JB090iB14p12393
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