Motohiro Ohtake

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[1] We present details of the identification of sites that show an absorption band at visible wavelengths and a strong 2 m band using the SELENE Spectral Profiler. All the sites exhibiting the visible feature are found on the regional dark mantle deposit (DMD) at Sinus Aestuum. All the instances of the visible feature show a strong 2 m band, suggestive of(More)
Introduction: Lunar mare basalts are products of partial melting of the lunar interior, thus are keys to understand the chemical compositions of the source mantle. However, the iron-enrichment of the mare basalt samples returned by Apollo and Luna missions, compared to the terrestrial basalts, have led to an inference that the mare basalt hand specimen do(More)
a ESA/ESTEC, Keplerlaan 1, Noordwijk, The Netherlands National Institute for Environmental Studies, Japan Analytical Imaging and Geophysics LLC, Boulder, CO 80303, USA d Jet Propulsion Laboratory, Pasadena, 91109, USA e Japan Aerospace Exploration Agency, Sagamihara, Japan Hawaii Institute of Geophysics and Planetology, School of Ocean and Earth Science and(More)
M. Ohtake, H. Demura, J. Haruyama , N.Hirata, R. Nakamura, T. Sugihara 1 and H. Takeda, Lunar Mission Research Center, National Space Development Agency of Japan (NASDA), 2-1-1 Sengen, Tsukuba, Ibaraki 3058505 Japan, E-mail: ohtake.makiko@nasda.go.jp, Dept. Computer Software, Univ. of Aizu, Ikki-machi, AizuWakamatsu City, Fukushima 965-8580, Japan, E-mail:(More)
Eight lunar areas, each 200 km in diameter, are identified as targets for coordinated science and instrument calibration for the orbital missions soon to be flown. Instrument teams from SELENE, Chang’E, Chandrayaan-1, and LRO are encouraged to participate in a coordinated activity of early-release data that will improve calibration and validation of data(More)
[1] We investigated the continuous spectral features of fresh craters on the Moon accompanied by distinctive bright rays, with cavity diameters between 8 and 24 km.We used the data from the Spectral Profiler onboard SELENE (Kaguya) to gain a better understanding of the composition of the lunar highland crust. We found that the observed spectra exhibited(More)
We report the global distribution of areas exhibiting no absorption features (featureless or FL) on the lunar surface, based on the reflectance spectral data set obtained by the Spectral Profiler onboard Kaguya/SELENE. We found that FL sites are located in impact basins and large impact craters in the Feldspathic Highlands Terrane, while there are no FL(More)
Introduction: Recognition of geologic units on image data is a fundamental analytical step of remote sensing. A single geologic unit could be defined as a region with its own particular features, which represent its origin. The same units have common photogeologi-cal characteristics. Criteria for determining the units are varied between previous and recent(More)