RAMC24-tlERT_GPR

This README describes the structure of the folder including all data for 200MHz and 500MHz Ground Penetrating Radar (GPR) surveys undertaken by Sam Bithell at Durham University Earth Sciences department. The work was funded through the NERC IAPETUS DTP and took place in May and August 2024.

The approximate site location was at British National Grid Reference 366500, 565950 (OSGB36) on land owned by the Vindolanda Trust.

Folder Structure:

README.txt
	This file

1-ERT
	The folder containing all raw ERT data and electrode positions.
	Data were collected using an Allied Associates Tigre-64 ERT unit, with 128 electrodes
	- Electrode_positions.csv
		A .csv file containing the electrode positions of each electrode in the array (X/Y coordinates), relative to the start of the array and elevations in m above Ordnance Datum (OSGB36/OSTN15)
	- Electrode_coordinates.csv
		A .csv file containing the coordinates of the start and end of the TL-ERT survey line and electrode positions at 10, 20 and 30m along the line from the start.
	- Phase1
		The Phase 1 TL-ERT survey data in .res format
		These files contain the raw measurement data and error as well as the survey metadata
		- t0-240509.res
		- t1-240520.res
		- t2-240514.res
		- t3-240515.res
	- Phase2
		The Phase 2 TL-ERT survey data in .res format
		These files contain the raw measurement data and error as well as the survey metadata
		- t4-240812.res
		- t5-240813.res
		- t6-240814.res

2-GPR
	This folder contains the raw data associated with the 200MHz PulseEkko and 500MHz Mala GPR surveys, including data and header files, and topographic trace coordinate files
	- 200MHz
		There were only 2 survey lines taken during the PulseEkko survey
		- line1.csv
		- line2.csv
			These .csv files contain the trace coordinates for every trace in both lines 1 and 2. These are in XYZ format. The coordinate reference system in OSGB36 (EPSG:27700) and the elevation data is in metres above Ordnance Datum )OSGB36/OSTN15)
		- line1.hd
		- line2.hd
			Both pulseEkko (Sensors & Software) formatted header files which are necessary to read the binary .dt1 data files. These primarily cover the metadata for each survey line.
		- line1.dt1
		- line2.dt1
			Both pulseEkko (Sensors & Software) binary data files containing the raw trace data for each line. The corresponding .hd header files are necessary to read these.
		
	- 500MHz
		- cor
			All GPS trace location data collected during the survey
			141 files
		- rad
			All Mala header files which are necessary to read the binary .rd3 data files. These primarily cover the metadata for each survey line.
			141 files
		- rd3
			All Mala binary data files containing the raw trace data for each line. The corresponding .rad header files are necessary to read these.
			141 files