Publication Abstracts
Siegfried et al. 2023
Siegfried, M.R., R.A. Venturelli, M.O. Patterson, W. Arnuk, T.D. Campbell, C.D. Gustafson, A.B. Michaud, B.K. Galton-Fenzi, M.B. Hausner, S.N. Holzschuh, B. Huber, , D.M. Schroeder, P.T. Summers, S. Tyler, S.P. Carter, H.A. Fricker, D.M. Harwood, A. Leventer, B.E. Rosenheim, M.L. Skidmore, and J.C. Priscu, 2023: The life and death of a subglacial lake in West Antarctica. Geology, 51, no. 5, 434-438, doi:10.1130/G50995.1.
Over the past 50 years, the discovery and initial investigation of subglacial lakes in Antarctica have highlighted the paleoglaciological information that may be recorded in sediments at their beds. In December 2018, we accessed Mercer Subglacial Lake, West Antarctica, and recovered the first in situ subglacial lake-sediment record — 120 mm of finely laminated mud. We combined geophysical observations, image analysis, and quantitative stratigraphy techniques to estimate long-term mean lake sedimentation rates (SRs) between 0.49±0.12 mm/a and 2.3±0.2 mm/a, with a most likely SR of 0.68±0.08 mm/a. These estimates suggest that this lake formed between 53 and 260 a before core recovery (BCR), with a most likely age of 180±20 a BCR-coincident with the stagnation of the nearby Kamb Ice Stream. Our work demonstrates that interconnected subglacial lake systems are fundamentally linked to larger-scale ice dynamics and highlights that subglacial sediment archives contain powerful, century-scale records of ice history and provide a modern process-based analogue for interpreting paleo-subglacial lake facies. %Y2 5/18/2023
Export citation: [ BibTeX ] [ RIS ]
BibTeX Citation
@article{si09400x,
author={Siegfried, M. R. and Venturelli, R. A. and Patterson, M. O. and Arnuk, W. and Campbell, T. D. and Gustafson, C. D. and Michaud, A. B. and Galton-Fenzi, B. K. and Hausner, M. B. and Holzschuh, S. N. and Huber, B. and Mankoff, K. D. and Schroeder, D. M. and Summers, P. T. and Tyler, S. and Carter, S. P. and Fricker, H. A. and Harwood, D. M. and Leventer, A. and Rosenheim, B. E. and Skidmore, M. L. and Priscu, J. C.},
title={The life and death of a subglacial lake in West Antarctica},
year={2023},
journal={Geology},
volume={51},
number={5},
pages={434--438},
doi={10.1130/G50995.1},
}
[ Close ]
RIS Citation
TY - JOUR ID - si09400x AU - Siegfried, M. R. AU - Venturelli, R. A. AU - Patterson, M. O. AU - Arnuk, W. AU - Campbell, T. D. AU - Gustafson, C. D. AU - Michaud, A. B. AU - Galton-Fenzi, B. K. AU - Hausner, M. B. AU - Holzschuh, S. N. AU - Huber, B. AU - Mankoff, K. D. AU - Schroeder, D. M. AU - Summers, P. T. AU - Tyler, S. AU - Carter, S. P. AU - Fricker, H. A. AU - Harwood, D. M. AU - Leventer, A. AU - Rosenheim, B. E. AU - Skidmore, M. L. AU - Priscu, J. C. PY - 2023 TI - The life and death of a subglacial lake in West Antarctica JA - Geology JO - Geology VL - 51 IS - 5 SP - 434 EP - 438 DO - 10.1130/G50995.1 ER -
[ Close ]
