In Situ Data on Ground Collapse along a Water Track in the Galbraith Lake Basin, 2023 - 2024

This dataset was used to study the drivers of ground collapse within a water track following a heavy rainfall event in July 2023 in the Galbraith Lake Basin. To study gully initiation and progression, we took repeat active layer thickness measurements along a transect upstream of the gully, installed thermocouple in hillslope at depths ranging from 2 centimeters (cm) to 20 cm, and in the water track at depths 2 cm to 20 cm. Additionally, thermocouple was installed to measure air temperature in a radiation shield, and to measure precipitation temperature following the methods of Anderson et al., 1998. This dataset includes precipitation data, air temperature and near surface ground temperature data in the water track and the hillslope, ground ice observations, and active layer thickness. Using this dataset, we assessed the drivers of thermo-erosional gully formation and progression and examined controls including rainfall, massive ground ice, changes in active layer thickness, and temperature on gully expansion.