阿耳卡狄亚区

阿耳卡狄亚区（）是美国地质调查局太空地质学研究计划（Astrogeology Research Program）对火星表面划分的30个区域之一，编号为MC-3。阿耳卡狄亚区位于火星西半球的中北部，覆盖了火星东经240°至300°（西经60°至120°）、北纬30°至65°的区域。该区域使用1:5,000,000比例尺的朗伯等角圆锥投影。Davies, M.E.; Batson, R.M.; Wu, S.S.C. "Geodesy and Cartography" in Kieffer, H.H.; Jakosky, B.M.; Snyder, C.W.; Matthews, M.S., Eds. Mars. University of Arizona Press: Tucson, 1992.

阿耳卡狄亚区的南北边界分别为大约3,065公里与1,500公里宽，南北距离则为约2,050公里。Distances calculated using NASA World Wind measuring tool. http://worldwind.arc.nasa.gov/ .覆盖范围约为490万平方公里，占火星表面积的3%以上。Approximated by integrating latitudinal strips with area of R^2 (L1-L2)(cos(A)dA) from 30° to 65° latitude; where R = 3889 km, A is latitude, and angles expressed in radians. See: http://stackoverflow.com/questions/1340223/calculating-area-enclosed-by-arbitrary-polygon-on-earths-surface .

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