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首页> 外文期刊>Icarus: International Journal of Solar System Studies >Curvilinear features in the southern hemisphere observed by Mars Global Surveyor Mars Orbiter Camera
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Curvilinear features in the southern hemisphere observed by Mars Global Surveyor Mars Orbiter Camera

机译：火星全球测量师火星探测器观测到的南半球的曲线特征

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摘要

We have used the complete set of Mars Global Surveyor (MGS) Mars Daily Global Maps (MDGMs) to study martian weather in the southern hemisphere, focusing on curvilinear features, including frontal events and streaks " Frontal events" refer to visible events that are morphologically analogous to terrestrial baroclinic storms. MDGMs show that visible frontal events were mainly concentrated in the 210-300°E (60-150°W) sector and the 0-60°E sector around the southern polar cap during L_s=140-250° and L_s=340-60°. The non-uniform spatial and temporal distributions of activity were also shown by MGS Thermal Emission Spectrometer transient temperature variations near the surface " Streaks" refer to long curvilinear features in the polar hood or over the polar cap. They are an indicator of the shape of the polar vortex. Streaks in late winter usually show wavy segments between the 180° meridian and Argyre. Model results suggest that the zonal wave number m=3 eastward traveling waves are important for their formation.
机译：我们已经使用整套的火星全球测量师（MGS）火星每日全球地图（MDGM）研究了南半球的火星天气，重点是曲线特征，包括额叶事件和条纹。“额叶事件”是指形态上可见的事件类似于地面斜压风暴。 MDGMs表明，在L_s = 140-250°和L_s = 340-60期间，可见的锋面事件主要集中在南极帽附近的210-300°E（60-150°W）区域和0-60°E区域°。 MGS热发射光谱仪还显示了表面附近活动的不均匀时空分布。“条纹”是指极罩或极帽上方的长曲线特征。它们是极涡形状的指标。冬末的条纹通常在180°子午线和Argyre之间呈波浪形。模型结果表明，纬向波数m = 3向东传播的波对它们的形成很重要。

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