Reprocessed Mercury Laser Altimeter (MLA) profiles and a Digital Elevation Model (DEM)|行星科学数据集|地形测量数据集

The h5 file mla_reprs_77_90_0_360.h5 stores the reprocessed Mercury Laser Altimeter (MLA) profiles and the python script MLA_reprocessed_profiles_extration.py is the tool to extract the data as dictionaries of pandas dataframes.

For the pandas dataframe for each of the profiles, there are a total of 12 columns. "et" is the laser pulse emission time; "chn" denotes the quality flag of the footprint; "tof" is the laser pulse time-of-flight; "offndr" is the off-nadir pointing angle in degree; "orbit" denotes the number of orbit; "spot_ix", "spot_iy", and "spot_iz" denote the inertial coordinates of the footprint in the International Celestial Reference Frame (ICRF) frame centered at the Center-of-Mass of Mercury; "spot_et" is the time of the laser pulse reflection on Mercury's surface; "spot_lat", "spot_lon", and "spot_radius" are the spherical coordinates of the footprint in the body-fixed frame of Mercury.

Mla_reprocessed_self_reg_77_84_250m.tif is the digital elevation model (DEM) generated from self-registration of the reprocessed profiles, for the purposes of measuring the tidal deformation of Mercury.

Details of the techniques applied to obtain these data products can be found at Xiao, H., Stark, A., Steinbrügge, G. B., Briaud, A., Lara, L. M., & Gutiérrez, P. J. (2024). Mercury's tidal Love number h2 from co-registration of MLA profiles. Authorea Preprints. In Revision with Geophysical Research Letters.

该 h5 文件 mla_reprs_77_90_0_360.h5 存储了重新处理后的水星激光测高仪（MLA）剖面数据，而 python 脚本 MLA_reprocessed_profiles_extration.py 则是用于将数据提取为 pandas 数据框字典的工具。对于每个剖面对应的 pandas 数据框，共有 12 列。其中，“et”代表激光脉冲发射时间；“chn”表示足迹的质量标志；“tof”是激光脉冲的飞行时间；“offndr”是相对于天底点的指向角（单位：度）；“orbit”表示轨道编号；“spot_ix”、“spot_iy”和“spot_iz”表示足迹在国际天体参考系（ICRF）中的惯性坐标，该坐标系以水星质心为中心；“spot_et”是激光脉冲在水星表面反射的时间；“spot_lat”、“spot_lon”和“spot_radius”是足迹在水星固连坐标系中的球面坐标。Mla_reprocessed_self_reg_77_84_250m.tif 是通过重新处理剖面数据的自配准生成的数字高程模型（DEM），用于测量水星的海潮形变。获取这些数据产品的技术细节可参考 Xiao, H.，Stark, A.，Steinbrügge, G. B.，Briaud, A.，Lara, L. M.，& Gutiérrez, P. J. (2024) 发表的论文《基于 MLA 剖面共配准的水星潮汐 Love 数 h2》。该论文发表在 Authorea 预印本上，目前正在《地球物理研究快报》的修订过程中。