狄阿克里亚区

狄阿克里亚区（英語：）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-2。狄阿克里亚区位于火星西半球的西北部，覆盖了火星东经180°至240°（西经120°至180°）、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。[1]

狄阿克里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。[2]覆盖范围约为490万平方公里，占火星表面积的3%以上。[3]凤凰号火星探测器的着陆点（68.22° N, 234.25° E）位于狄阿克里亚区东北部往北约186公里处。凤凰号拍摄到的景像包括了狄阿克里亚区北部代表性的地形。

参考文献

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.
Distances calculated using NASA World Wind measuring tool. http://worldwind.arc.nasa.gov/ 页面存档备份，存于.
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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[1] 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.

[2] Distances calculated using NASA World Wind measuring tool. http://worldwind.arc.nasa.gov/ 页面存档备份，存于.

[3] 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.