Kaguya Lunar Multiband Imager (MI) Derived Optical Maturity (OMAT) 50N50S (512ppd) 59mpp
This mosaic represents the optical maturity (OMAT) of the surface of the Moon. OMAT is a unitless quantity that acts as a relative measure of the degree to which lunar soil has been physically modified by exposure to space (Lucey et al., 2000). Smaller OMAT values indicate greater optical maturity.
The mosaic was created from topographically-corrected MI reflectance data acquired by the JAXA SELENE/Kaguya mission (see Ohtake et al., 2013) from the Kaguya Archive MI MAP processing level version 2 (MI MAP_02) products. The MI collects images of the lunar surface at 5 wavelengths in the ultraviolet-visible (UVVIS; 415, 750, 900, 950, 1001 nm) region of the electromagnetic spectrum and at 4 wavelengths in the near-infrared region (NIR; 1000, 1050, 1100, 1250 nm). These multispectral images have been used to derive 9 new near-global maps of the four common lunar minerals, FeO, optical maturity (OMAT), the abundance of SMFe, the grain size for plagioclase, and an estimation of the modeling error using Hapke’s radiative transfer equations (Lemelin et al., 2015; 2016; 2019). These products only cover the latitudinal range +/-50 degrees due to the difficulty of applying adequate corrections for topographic shading at higher latitudes. Preparation details and information on limitations of these products will be presented in a future publication.
The mosaic presented here has been resampled to 512 ppd (59 meters/pixel) from its original resolution of 2048 ppd (15 meters/pixel).
Retrieve the graphical 8bit-stretched full-res GeoTiff and legend from the Ancillary Products section at the right-side of this page.
For usage rights, please refer to the JAXA Conditions for material usage page ( http://jda.jaxa.jp/en/service.php ) and please credit JAXA and the SELENE/Kaguya data. ©JAXA/SELENE
Lemelin, M., P. G. Lucey, K. Miljković, L. R. Gaddis, T. M. Hare, and M. Ohtake (2019), The compositions of the lunar crust and upper mantle: Spectral analysis of the inner rings of lunar impact basins, Planetary and Space Science, 165, 230-243.
Lemelin, M., P. G. Lucey, L.R. Gaddis, T. Hare, and M. Ohtake (2016), Global map products from the Kaguya Multiband Imager at 512 ppd: Minerals, FeO and OMAT, 47th LPSC, abs. #2994. http://www.hou.usra.edu/meetings/lpsc2016/pdf/2994.pdf
Lemelin, M., P. G. Lucey, E. Song, and G. J. Taylor (2015), Lunar central peak mineralogy and iron content using the Kaguya Multiband Imager: Reassessment of the compositional structure of the lunar crust, J. Geophys. Res. Planets, 120, 869–887. doi:10.1002/2014JE004778.
Lucey, P. G., D. T. Blewett, G. J. Taylor, and B. R. Hawke (2000), Imaging of lunar surface maturity, J. Geophys. Res., 105(E8), 20377–20386, doi:10.1029/1999JE001110.
Ohtake, M., C.M. Pieters, P. Isaacson, S. Besse, Y. Yokota, T. Matsunaga, J. Boardman, S. Yamamoto, J. Haruyama, M. Staid, U. Mall, R.O. Green (2013), One Moon, Many Measurements 3: Spectral reflectance, Icarus, Volume 226, Issue 1, 364–374.
Ohtake, M., J. Haruyama, T. Matsunaga, Y. Yokota, T. Morota, C. Honda and the LISM team (2008), Performance and scientific objectives of the SELENE (KAGUYA) Multiband Imager, Earth Planets Space, 60, 257-264.
Taylor, L. A., C. Pieters, A. Patchen, D. S. Taylor, R. V. Morris, L. P. Keller, and D. S. McKay (2010), Mineralogical and chemical characterization of lunar highland soils: Insights into the space weathering of soils on airless bodies, J. Geophys. Res., 115, E02002, doi:10.1029/2009JE003427.
- Japan Aerospace Exploration Agency (JAXA
- Publication Date
- 1 September 2016
- USGS Astrogeology Science Center, Lemelin et al., University of Hawaii, JAXA - SELENE MI Instrument Team (M. Ohtake, PI)
- Added to Astropedia
- 1 June 2017
- 25 June 2019
The SELENE (KAGUYA) mission addressed the origin and evolution of the Moon by obtaining global element and mineral compositions, topological structure, gravity field and electromagnetic and particle environment of the Moon. The MI was a high-resolution multiband imaging camera with a spatial resolution in visible bands of 20 mpp and a spatial resolution in near-infrared bands of 62 mpp from the 100 km SELENE (KAGUYA) orbit altitude. These data support the derivation of many new products, including mineral and elemental abundance maps such as those presented here.
- Geospatial Data Presentation Form
- Raster Data, Mineral Map, Remote-sensing Data
- Online Linkage
- Native Data Set Environment
- ISIS v3
- Supplemental Information
- http://jda.jaxa.jp/en/service.php, http://l2db.selene.darts.isas.jaxa.jp/index.html.en, http://www.hou.usra.edu/meetings/lpsc2016/pdf/2994.pdf
Data Status and Quality
- Logical Consistency Report
- The MI reflectance data were provided by the SELENE team; information about the MAP processing level reflectance can be found in KAGUYA (SELENE) Product Format Description – Lunar Imager/Spectrometer (LISM (TC/MI/SP)) / SPICE Kernel, version 1.3 (2010). See Source Online Linkage below. The MI ultraviolet-visible (UVVIS) data (5 spectral bands, at 415, 750, 900, 950, 1001 nm) were used to derive 9 new near-global maps of common lunar minerals, FeO, TiO2, and optical maturity (OMAT) using Hapke’s radiative transfer equations (Lemelin et al., 2016).
- Completeness Report
The MAP level reflectance data product has been derived from 50N to 50S latitude of the Moon. There are data gaps within the mosaic set to NoData.
- Process Date
- 1 August 2015
- Process Description
KAGUYA (SELENE) Product Format Description – Lunar Imager/Spectrometer (LISM (TC/MI/SP)) / SPICE Kernel, version 1.3 (2010). See Source Online Linkage below. Original product at 2048ppd (15 m/p) data was sub-sampled to 512ppd (59 m/p).
- Horizontal Positional Accuracy Report
- Best Effort
- Source Online Linkage
- https://planetarymaps.usgs.gov/mosaic/Lunar MI_mineral_maps/Lunar_Kaguya_MIMap_MineralDeconv_OpticalMaturityIndex_50N50S.tif
- Minimum Latitude
- Maximum Latitude
- Minimum Longitude
- Maximum Longitude
- Direct Spatial Reference Method
- Object Type
- Lines (pixels)
- Samples (pixels)
- Bit Type
- Quad Name
- LQ-2, LQ-7, LQ-24, LQ-29
- Radius A
- Radius C
- Pixel Resolution (meters/pixel)
- Scale (pixels/degree)
- Horizontal Coordinate System Units
- Map Projection Name
- Simple Cylindrical
- Latitude Type
- Longitude Direction
- Positive East
- Longitude Domain
- -180 to 180