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首页> 外文期刊>Planetary and space science >Identification of a new outflow channel on Mars in Syrtis Major Planum using HRSC/MEx data
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Identification of a new outflow channel on Mars in Syrtis Major Planum using HRSC/MEx data

机译：使用HRSC / MEx数据在Syrtis Major Planum中确定火星上的新流出通道

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Syrtis Major Planum is a volcanic plain dominated by lava flows. High resolution stereo camera (HRSC) images of the northern Syrtis Major region display erosional features such as grooves, teardrop-shaped islands and valleys. These landforms are characteristics of outflow channels seen on Mars, therefore implying that a flood event took place in this region. The flow of 100 km long and a few kilometer wide followed the local slopes in most locations. Maximum flood discharges estimated from images and topography vary from about 0.3 × 10~6 to 8 × 10~6m~3/s, and therefore are in the range of terrestrial mega-floods in the Scablands or Lake Bonneville. In North Syrtis Major, the relationships with surrounding lava flows and the timing of the flood coeval to Syrtis Major volcanic activity suggest that it could be related to the subsurface water discharge mobilized by the volcanic activity. The proximity of Noachian age basement rocks 20 km away from the flood and below lava flows might have played a role in its formation and water presence.
机译：Syrtis Major Planum是一个以熔岩流为主的火山平原。北部锡尔提斯主要地区的高分辨率立体相机（HRSC）图像显示出侵蚀特征，例如沟纹，水滴状岛和谷。这些地貌是在火星上看到的流出通道的特征，因此暗示该地区发生了洪水事件。在大多数地方，长100公里，宽数公里的水流遵循当地的斜坡。根据图像和地形估计的最大洪水流量在0.3×10〜6到8×10〜6m〜3 / s之间，因此在Scablands或Bonneville湖的陆地大洪水范围内。在北锡尔提斯主要地区，与周围熔岩流的关系以及洪水潮至锡尔提斯主要火山活动的时间表明，这可能与火山活动引起的地下排水有关。距洪水20公里且熔岩流以下的Noachian年龄基底岩石附近可能在其形成和水中起了作用。

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