Ground temperature profiles, la Soufrière de Guadeloupe

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OVERVIEW
This repository contains ground temperature data acquired at la Soufrière de Guadeloupe. Measurements were performed at various depths using PT100 temperature probes inserted inside stainless-steel tubes with conical ends which were driven into the ground. Only when the temperature had stabilised were recordings made using a Campbell Scientific CR6 datalogger, with positions simultaneously recorded using handheld “GPS” units (Garmin eTrex® 20 or GPSMAP® 60). The ensemble of the data from each campaign is provided in a “tabulated” format (“ground_temperature_profiles_YYYY.csv” and "*.tab"), which has been produced by combining the CR6 and GPS data.

Initial data were acquired during fieldwork carried out as part of the PhD of Amelie Klein (Université Clermont Auvergne 2021–2024). Further details can be found in Klein (2024) and Klein et al. (2024).

DATA STRUCTURE
The data columns in the .tab and .csv files contain the following
|column name| description |
|———–|————-|
|‘datetime’| datetime in %Y-%m-%d %H:%M:%S format|
|‘ALTITUDE’| altitude in metres|
|‘LATITUDE’| latitude in decimal degrees|
|‘LONGITUDE’| longitude in decimal degrees|
|‘T_00cm’| Temperature at the surface (i.e. 0 cm depth)|
|‘T_XXcm’| Temperature at XX cm depth (XX is typically a multiple of 5, with zero padding)|
|‘UTM LATITUDE’| UTM latitude in metres|
|‘UTM LONGITUDE’| UTM longitude in metres|
|‘UTM ZONE’| UTM zone |

It should be noted that temperatures were not recorded at every depth and location. Where no measurement was recorded, the corresponding ‘T_XXcm’ field containing NaN (not-a-number). Geojson (ground_temperature_profiles_YYYY.geojson) and ESRI shapefiles (available as a zipped archive named ground_temperature_profiles_YYYY.shz) contain an additional “geometry” column which defines the measurement point as the coordinate pair (‘LONGITUDE’, ‘LATITUDE’). Note also that the ESRI shapefiles contain abbreviated column names. The full names are as described above.

REFERENCE
A. Klein. “Multi-parametric study of the evolution of hydrothermal systems: contributions to the understanding of volcanic systems in unrest”. PhD thesis. École Doctorale des Sciences Fontamentales, Université Clermont Auvergne, 2024.
A. Klein, D. E. Jessop, F. Donnadieu, J. Pierre, and R. Moretti (2024). “Dome permeability and fluid circulation at La Soufrière de Guadeloupe implied from soil CO2 degassing, thermal flux and self-potential”. Bull. Volcanol. 86.4, p. 26. ISSN: 1432-0819. doi: 10.1007/s00445-024-01713-z. url: https://insu.hal.science/insu-04510119