Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2016, Vol. 13, No. 5, pp. 265-274
The study of Mercury's surface by cartography methods based on the newest topographic data derived from MESSENGER image processing
А.Yu. Zharkova
1 , I.P. Karachevtseva
1 , A.E. Zubarev
1 , E.S. Brusnikin
1 , A.A. Kokhanov
1 , М.А. Kreslavskiy
2, 1 1 Moscow State University of Geodesy and Cartography, Moscow, Russia
2 University of California - Santa Cruz, Santa Cruz, USA
Accepted: 26.08.2016
DOI: 10.21046/2070-7401-2016-13-5-265-274
In 2015 MESSENGER completed its mission that lasted for four years. As a result over 277 000 images were obtained that provide creation of digital elevation models (DEMs) with medium and low resolution (from 0.5 to 22 km/pixel). Correlation analysis of current topographic models showed big discrepancies between global DEMs, related to differences in methods of determining heights and also with strong influence of temperature on the parameters of MDIS system (Becker et al., 2014). New digital terrain models (DTMs) with resolution 30–150 m/ pixel and elevation accuracy up to ±10 m were created based on photogrammetric processing of detailed MESSENGER stereo images (10–20 m/pixel). Using new DTMs quantitative measurements of flat-floored craters and hollows were carried out (Zharkova et al., 2016). These data as well as small crater catalogue and high resolution DTMs are available via MExLab Planetary Geoportal (http://cartsrv.mexlab.ru/geoportal/). Data received by MESSENGER during the years of the mission has not exhausted all its scientific potential because detailed dataset is currently being extended. For example, using the latest global DEM with resolution 665 m/pixel we calculated the statistical characteristics of morphometric parameters of Mercury relief that can be used to assess the relative geological age of the volcanic plains on the planet.
Keywords: Mercury, MESSENGER, MDIS NAC stereo images, DEM/DTM, quantitative measurements, morphometric analysis, statistical characteristics of the relief morphometric parameters
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