The catalogue is intended for use by investigators of Mars, students, in comparative planetology and in the selection of craters for naming.
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Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://selena.sai.msu.ru/Rod/Publications/Mars_Cat/mars_cate.htm
Дата изменения: Mon Apr 20 15:42:32 2015 Дата индексирования: Sat Apr 9 23:32:31 2016 Кодировка: Поисковые слова: iapetus |
| The coordinates, diameters, altitudes and morphological
features of all the craters of Mars exceeding 10 km in diameter, totaling 19
308, are compiled. The morphological features included are the degree of rim
degradation, the presence of terraces and faults, central peaks, pits,
hills, chains and fissures, dark material on the crater floor, fluidized
ejecta, the character of the crater floor and surrounding surface and albedo.
Designations, where given by the IAU, are presented in both Latin and
Russian transcription. Statistical summaries of quantity and density in
various forms are presented in tables, charts and maps. The catalogue is intended for use by investigators of Mars, students, in comparative planetology and in the selection of craters for naming. |
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The catalogue is available for download in text format: SAI_mars.zip (318KB) and in Excel format SAI_mars_xls.zip (2721KB)
System of classification
| SAI Index A sequential index number, allocated in descending order of diameter, craters of equal diameter being ordered by ascending latitude, then longitude. Latitude, Longitude Location of crater centre, recorded to nearest 0.1 degree. Diameter Mean of North-South and East-West diameters in kilometres, measured from the rim peak. For craters with significant ellipticity, the minor diameter is recorded here. Altitude Surface altitude in kilometres. Ejecta range/major axis Range of ejecta in kilometres, if present, or major diameter, if crater is elliptical (according to classification of Special features below). Special features 0 none Rim degradation 1 highly preserved rim Terraces and faults 0 no terraces, no faults Peaks and circular ridges 0 no peaks and no circular ridges |
Hills and ridges 0 no
hills and no ridges Central pit 0 no pit Fissures and chains 0 no fissures and no chains Character of floor 1 flat Dark material on the crater floor 0 no dark material Local terrain 1 plain Internal cratering 0 no craters Local albedo 1 dark |
Sample craters
 a - degradation class 1
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 b - degradation class 1, with central peak
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 c - class 2
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 d - class 2
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 e - class 3
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 f - class 4
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 g - class 5
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 h - with fluidised ejecta
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 i - elliptical |
 j - with central pit |
| Sample
craters of different morphological categories
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