Mars’ controversial hypothesized ocean shorelines have been found to deviate significantly from an expected equipotential surface. While multiple deformation models have been proposed to explain the wide range of elevations, here we show that the historical locations used in the literature and in these models vary widely. We find that the most commonly used version of the Arabia Level does not follow the originally described contact and can deviate laterally by ∼500 km in Deuteronilus Mensae. A meta‐analysis of different published maps shows that, globally, the minimum lateral offsets between the locations of the putative Arabia and Deuteronilus shorelines vary by an average of 141 ± 142 km and 180 ± 177 km, respectively. This leads to mean elevations of the Arabia Level that vary by up to 2.2 km between different mappings, and topographic ranges within each global mapping ranging from 2.7 to 7.7 km. The younger Deuteronilus Level has less topographic variation as it largely follows a formal contact (the Vastitas Borealis Formation) within the relatively flat northern plains. Given the high variance in position (spatial and topographic) of the maps, the use of such data and conclusions based on them are potentially problematic.

中文翻译：

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火星的虚拟海洋海岸线在哪里？不同版本的古海岸线地图之间存在较大的横向和地形偏移

已发现火星有争议的假设海洋海岸线与预期的等势面有很大偏差。虽然已经提出了多种变形模型来解释大范围的高程，但在这里我们表明，文献和这些模型中使用的历史位置差异很大。我们发现阿拉伯半岛最常用的版本没有遵循最初描述的接触方式，在氘核曼苏埃中可以横向偏离约500公里。对不同已发布地图的荟萃分析显示，总体上，推定的阿拉伯半岛和氘代海岸线之间的最小横向偏移分别平均为141±142 km和180±177 km。这导致阿拉伯地图的平均海拔在不同的地图之间相差高达2.2公里，以及每个全球地图中的地形范围从2.7到7.7 km。较新的氘代水平面在相对平坦的北部平原内很大程度上遵循正式接触（Vastitas Borealis组），因此地形变化较小。鉴于地图位置（空间和地形）的高度差异，使用此类数据和基于它们的结论可能存在问题。