Dataset for the article: Artificial permafrost dynamics measured through 3D time-lapse electrical resistivity tomography

This read me file contains information on the datasets related to the paper "Artificial permafrost dynamics measured through 3D time-lapse electrical resistivity tomography" by: J.G.H. de Bruin, V. F. Bense, M. van der Ploeg and A. Binley Geophysical Research Letters (2024)<br><br>STRUCTURE:<br><br>- Folder "Freezing_interval_ERT" contains all raw ERT observations collected during freezing of the column, both normal and reciprocal without processing. Collection was done using a 96 channel Iris instruments Syscal Pro switch. Dates in the dataset filename refer to the date the dataset was collected. <br>- Folder "Thawing_interval_ERT" contains all raw ERT observations collected during thawing of the column, both normal and reciprocal without processing. Collection was done using a 96 channel Iris instruments Syscal Pro switch. Dates in the dataset filename refer to the date the dataset was collected. <br>- Folder "Reference_ERT" contains all raw ERT observations collected at a stable temperature of 4C, acting as the reference observation for the time-lapse inversion. It contains both normal and reciprocal observations without processing. Collection was done using a 96 channel Iris instruments Syscal Pro switch. Dates in the dataset filename refer to the date the dataset was collected. <br>- Folders "0_04 until 0_14Timelapse1.14_Observation..." contains the files during FREEZING to run the Time-lapse inversion using the R3t software. It further contains the resulting output files from the inversion. More information on the file structure is available in the R3t manual http://www.es.lancs.ac.uk/people/amb/Freeware/R3t/R3t.htm <br>- Folders "01 until 10Timelapse2.20_Observation..." contains the files during THAWING to run the Time-lapse inversion using the R3t software. It further contains the resulting output files from the inversion. More information on the file structure is available in the R3t manual http://www.es.lancs.ac.uk/people/amb/Freeware/R3t/R3t.htm <br>- Folder "Temperature data" contains the temperature observations collected at various depths within the column, as well as the air temperature. The RData file can be opened in R, where column headers refer to the locations of the temperature sensors.

本自述文件包含与J.G.H. de Bruin、V. F. Bense、M. van der Ploeg及A. Binley发表于《地球物理研究快报》2024年的论文《通过三维延时电阻率层析成像测量人工冻土动力学》相关的数据集信息。

### 文件夹结构

- 文件夹"Freezing_interval_ERT"收录了柱体冻结过程中采集的所有未经过处理的常规与反向采集的原始电阻率层析成像（Electrical Resistivity Tomography, ERT）观测数据。数据采集采用96通道Iris仪器Syscal Pro切换系统。数据集文件名中的日期代表该数据集的采集日期。
- 文件夹"Thawing_interval_ERT"收录了柱体解冻过程中采集的所有未经过处理的常规与反向采集的原始ERT观测数据。数据采集采用96通道Iris仪器Syscal Pro切换系统。数据集文件名中的日期代表该数据集的采集日期。
- 文件夹"Reference_ERT"收录了柱体在4℃恒温条件下采集的所有未经过处理的常规与反向采集的原始ERT观测数据，作为延时反演的基准观测数据集。数据采集采用96通道Iris仪器Syscal Pro切换系统。数据集文件名中的日期代表该数据集的采集日期。
- 名为"0_04至0_14Timelapse1.14_Observation..."的文件夹收录了柱体冻结阶段用于通过R3t软件执行延时反演的相关文件，同时包含反演得到的最终输出文件。有关文件结构的详细说明可参阅R3t软件手册：http://www.es.lancs.ac.uk/people/amb/Freeware/R3t/R3t.htm
- 名为"01至10Timelapse2.20_Observation..."的文件夹收录了柱体解冻阶段用于通过R3t软件执行延时反演的相关文件，同时包含反演得到的最终输出文件。有关文件结构的详细说明可参阅R3t软件手册：http://www.es.lancs.ac.uk/people/amb/Freeware/R3t/R3t.htm
- 文件夹"Temperature data"收录了柱体内部不同深度及环境空气的温度观测数据。其中的RData文件可通过R语言打开，文件表头代表各温度传感器的安装位置。