研究人员通过引力测量技术发现，火星南半球内部温度比北半球高200至400摄氏度，部分区域可能处于部分熔融状态1。这一重大发现由加州理工学院校友、现任亚利桑那大学博士后Alexander Berne领导1，相关研究成果已发表在2026年8月27日出版的《自然》杂志上，论文题目为《潮汐层析成像揭示火星地壳二分界之下的热异常》1。
该研究利用了火星全球勘测者、火星奥德赛和火星侦察轨道器三个火星任务数十年来积累的观测数据1。该项研究获得了美国宇航局的资助1。
Researchers have identified a significant thermal imbalance in Mars's interior, with the southern hemisphere approximately 200 to 400 degrees Celsius hotter than the northern hemisphere, potentially containing partially melted material 1. The findings, published in Nature on August 27, 2026, were derived from decades of observational data collected by three Mars missions: Mars Global Surveyor, Mars Odyssey, and Mars Reconnaissance Orbiter 1.
The study, led by Alexander Berne, a Caltech alumnus now serving as a postdoctoral researcher at the University of Arizona, employed tidal tomography techniques to reveal this thermal anomaly beneath Mars's crustal dichotomy 1. The paper is titled "Tidal Tomography Reveals a Thermal Anomaly Beneath Mars's Crustal Dichotomy" 1. According to the research team, this discovery may help explain long-standing mysteries about Mars, including its magnetic anomalies, seismic behavior, and ancient hydrological history 1. The work was supported by funding from NASA 1.
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