Digitised magnetogram data from the Carrington storm 25th August to 5th September 1859 recorded at Greenwich and Kew Gardens

This dataset is the most complete digitised magnetic records (as of Nov 2023) of the ten-day period from 25th August to 5th September 1859 encompassing the Carrington storm and its lesser recognised precursor on the 28th August. Based on digital images of the magnetograms from the BGS online archive collection and information from the observatory yearbooks and scientific papers, it is possible to scale the measurements to SI units (degrees of angle and nanoTesla) and extract quasi-minute cadence spot values.
The contents of the zip file are various data in ASCII text files plus a readme and example code for plotting the data file.
• README.txt - small text file
• plot_Carrington1859_paper_plots_with_correlation.py - example code in Python3.7 to create plots
• bartels : folder containing digitised KEW data from Bartels (1937) paper
• hdz : folder containing extracted KEW and GRW data in single files with time, Horizontal (H), Declination (D) and Vertical (Z) magnetic field components
• IAGA2002 : folder with KEW and GRW data in IAGA-2002 formatted files with standard headers
• spot_values : GRW spot values taken from the 1859 yearbook tables in csv and txt files

本数据集为截至2023年11月最完整的数字化地磁记录，覆盖1859年8月25日至9月5日共计10天的时段，涵盖卡林顿地磁暴（Carrington storm）以及8月28日的前驱地磁事件（该事件此前受关注程度较低）。本数据集基于英国地质调查局（British Geological Survey，BGS）在线档案库中的地磁图（magnetogram）数字图像，结合天文台年鉴与学术论文中的相关信息，可将原始测量值换算为国际单位制（SI，即角度度数与纳特斯拉（nanoTesla）），并提取准分钟采样间隔的测点值。
该压缩包内含多种ASCII文本格式的数据文件，同时附带一份说明文档与用于绘制数据图的示例代码，具体内容如下：
• README.txt：小型文本文件
• plot_Carrington1859_paper_plots_with_correlation.py：用于生成绘图的Python3.7示例代码
• bartels：存储源自Bartels（1937）论文的数字化基尤天文台（Kew Observatory，KEW）数据的文件夹
• hdz：存储提取得到的基尤天文台（Kew Observatory，KEW）与GRW观测台数据的文件夹，数据以单文件形式组织，包含时间、水平（H）磁场分量、偏角（D）分量与垂直（Z）磁场分量
• IAGA2002：采用IAGA-2002格式（带标准文件头）存储基尤天文台（KEW）与GRW观测台数据的文件夹
• spot_values：源自1859年天文台年鉴表格的GRW观测台测点值，存储为csv与txt格式文件