Borehole sonic log from the southern sector of Larsen C Ice Shelf, Antarctic Peninsula, December 2022

This is a sonic log of a borehole drilled by hot water to 120 m (Site 1) on Larsen C Ice Shelf, Antarctic Peninsula. The borehole was drilled in December 2022 to investigate the internal properties of a suture zone (Site 1) and a meteoric ice band (Site 2) of an ice shelf, as part of the NERC-funded RiPIce (Rift Propagation for Ice sheet models) research project.

NERC standard grant NE/T008016/1.

The dataset is a sonic log from a borehole drilled to 120 m (Site 1) on Larsen C Ice Shelf, Antarctica, in December 2022. It was acquired using a slim-hole triple sonic borehole probe manufactured by Robertson Geologging Ltd, which is comprised of one transmitter that radiates a high-frequency acoustic wave detected by three receivers on the probe. Boreholes were logged whilst the sonic probe was travelling up the borehole.

Logs were acquired using Robertson Geologging full waveform triple sonic probe, mini winch and Micrologger II.

Data are unaltered from those logged in the field. Centralisers were not used during logging due to uneven borehole width in the uppermost firn layers. Missing data are presented as -999.