利用 CELMS 数据研究海山盆地的潜在地质信息

Minghao Tong;Zhanchuan Cai;Mingwen Zhu
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摘要

Mare Serenitatis(北纬28°,东经17.5°)经历了错综复杂的火山活动,导致盆地内不同阶段的玄武岩熔岩流沉积。本研究利用嫦娥二号月球微波探测仪(CELMS)提供的数据,提出了对半月母海区玄武岩的前瞻性地质见解,从而有助于加深对岩浆动力学、热演化和火山活动的理解。本研究取得了以下成果:1)利用亮度温度(TB)分析了半月海潜在的地质信息,确定了盆地内深层单元之间的潜在联系;2)研究了半月海亮度温度异常的分布和原因,发现白天的热异常主要出现在南缘,主要影响因素是二氧化钛丰度(TA)。夜间的冷异常出现在几个陨石坑附近,并随着深度的增加而扩展;以及 3)在塞雷尼塔蒂斯海中部地区观测到一种非典型的结核异常,表现为白天结核较低,夜间结核较高。这项研究表明,在海神庙海中部地区的表面存在一种损耗正切值较低的物质,并认为这种物质与富镁岩石有关。
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Potential Geological Information of Mare Basalts in Mare Serenitatis Using CELMS Data
Mare Serenitatis (28°N, 17.5°E) has undergone intricate volcanic events, leading to the deposition of basaltic lava flows from various stages in the basin. This study presents prospective geological insights into the mare basalts within Mare Serenitatis by using data from the Chang’E-2 Lunar Microwave Sounder (CELMS), thereby aiding in enhancing comprehension of magma dynamics, thermal evolution, and volcanic activities. The following are the results obtained from this study: 1) the potential geological information in Mare Serenitatis was analyzed using brightness temperature (TB), identifying potential connections between deep-seated units within the basin; 2) the distribution and causes of TB anomalies in Mare Serenitatis were investigated, revealing that daytime hot anomalies mainly occur at its southern rim, with TiO2 abundance (TA) being the primary influencing factor. The nighttime cold anomalies appear near several craters and extend with depth; and 3) an untypical TB anomaly was observed in the central region of Mare Serenitatis, exhibiting lower TB at daytime and higher TB at nighttime. This study suggests the presence of a material with a lower loss tangent on the surface of the central region of Mare Serenitatis and suggests that this material is related to Mg-rich rock.
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