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  • PAR (Oddesey) and temperature sensors (Hobo) were deployed in the ice under red, green, and blue acrylic sheets to examine the response of rhodopsin-bearing cells to environmental stress. Sensors were placed near the top, middle and bottom of the sea ice and left in place for 2 weeks. GET DATA:

  • These data are described in detail by 'Melting and refreezing in an ice shelf basal channel at the grounding line of the Kamb Ice Stream 1/ HWD1. ApRES observations were made in December 2019 and repeated in December 2020 at the same locations. Data collection and processing followed the method described in Stewart et al. (2019). ApRES' contains raw ApRES data and processed results from a spatial survey of basal mass balance - detailed in Sections 2.2.4 and 3.2.2 of: Whiteford, A., Horgan, H. J., Leong, W. J., & Forbes, M. (2022). Melting and refreezing in an ice shelf basal channel at the grounding line of the Kamb Ice Stream, West Antarctica. Journal of Geophysical Research: Earth Surface, 127, e2021JF006532. GET DATA:

  • Here, we present new, transient, GCM-forced ice-sheet simulations validated against proxy reconstructions. This is the first time such an evaluation has been attempted. Our empirically constrained simulations indicate that the AIS contributed 4 m to global mean sea level by 126 ka BP, with ice lost primarily from the Amundsen, but not Ross or Weddell Sea, sectors. We resolve the conflict between previous work and show that the AIS thinned in the Wilkes Subglacial Basin but did not retreat. We also find that the West AIS may be predisposed to future collapse even in the absence of further environmental change, consistent with previous studies. There are two files, for Termination 1 ('T1') and Termination 2 ('T2'). They contain spatial fields for ice thickness, ice surface elevation, bedrock elevation, surface and basal velocity, and mask. The T1 outputs are every 500 years, whereas the T2 outputs are every 100 years. The spatial resolution of both is 20 km. Sea-level-equivalent mass loss can be calculated from these outputs, but is also provided here in a text file for convenience. RELATED PUBLICATION: Golledge, N.R., Clark, P.U., He, F., et al. (2021). Retreat of the Antarctic Ice Sheet During the Last Interglaciation and Implications for Future Change. Geophysical Research Letters, 48(17). GET DATA:

  • We present structural data and a 3D map of a parallel fault array from Crawford Knob in the Southern Alps, New Zealand. The data were collected in the field in 2014 and 2018 and combine structural geology field measurements with UAV (drone) and RTK (GPS) mapping. Cite as: Ellis SM, Hill MP, Little TA. 2023. Crawford Knob supplementary fault map dataset. Lower Hutt (NZ): GNS Science.