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Your search keyword '"Leonard, G. H."' showing total 24 results
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24 results on '"Leonard, G. H."'

1. Antarctic Landfast Sea Ice: A Review of Its Physics, Biogeochemistry and Ecology

Author

Fraser, A. D., primary, Wongpan, P., additional, Langhorne, P. J., additional, Klekociuk, A. R., additional, Kusahara, K., additional, Lannuzel, D., additional, Massom, R. A., additional, Meiners, K. M., additional, Swadling, K. M., additional, Atwater, D. P., additional, Brett, G. M., additional, Corkill, M., additional, Dalman, L. A., additional, Fiddes, S., additional, Granata, A., additional, Guglielmo, L., additional, Heil, P., additional, Leonard, G. H., additional, Mahoney, A. R., additional, McMinn, A., additional, van der Merwe, P., additional, Weldrick, C. K., additional, and Wienecke, B., additional

Published
2023
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3. Quantifying Scale in Ecology: Lessons from a Wave-Swept Shore

Author

Denny, M W, Helmuth, B, Leonard, G H, Harley, C D, Hunt, L J, and Nelson, E K

Subjects
1/f noise, California, rocky intertidal ecology, scale, scaling, spatial pattern, spatial statistics, spectral analysis, temporal pattern, wave exposure
Published
2004

6. Variability in the Distribution of Fast Ice and the Sub‐ice Platelet Layer Near McMurdo Ice Shelf

Author

Brett, G. M., Irvin, A., Rack, W., Haas, C., Langhorne, P. J., Leonard, G. H., Brett, G. M., Irvin, A., Rack, W., Haas, C., Langhorne, P. J., and Leonard, G. H.

Abstract

Variability in the volume of supercooled Ice Shelf Water outflow in McMurdo Sound is reflected in the thickness and distribution of fast ice and the sub‐ice platelet layer beneath. Ground‐based electromagnetic induction and drill hole surveys of the distribution and thickness of ice shelf‐influenced fast ice and the sub‐ice platelet layer in McMurdo Sound were carried out in late spring of 2011, 2013, 2016, and 2017. In 2011 and 2017, thicker sub‐ice platelet layers of up to 7.5 and 6 m were observed, respectively. Fast ice formation throughout the winters of 2011 and 2017 was influenced by a higher occurrence of strong southerly wind events and resultant activity of the Ross Sea Polynya. In contrast, lower wind conditions in 2016 led to largely undisturbed sea ice growth and anomalously extensive fast ice coverage. A thinner sub‐ice platelet layer of up to 4 m was observed in 2016. In 2011 and 2017, substantial and variable sub‐ice platelet layers were detected in a region of exchange of water masses between the Ross Sea and the McMurdo‐Ross ice shelf cavity, which were not observed in 2013 and 2016. We hypothesize that a higher frequency of strong southerly wind events, resultant polynya activity, and High Salinity Shelf Water production over winter accelerates circulation and increases melting in the proximal shallow McMurdo Ice Shelf and the deeper Ross Ice Shelf regions of the conjoined cavity. The outflow of supercooled Ice Shelf Water and sub‐ice platelet layer formation in McMurdo Sound are consequently promoted.

Published
2020

10. UNIVERSITY RESEARCH, Session 1924–25

Author

Leonard, G. H., Coulton, G. G., Hannay, R. K., Browning, Andrew, Lackland, H. M., Davis, E. Jeffries, Powicke, F. M., Jacob, E. F., Mackie, J. D., and Bruce, Herbert

Published
1926

12. Observed platelet ice distributions in Antarctic sea ice: An index for ocean-ice shelf heat flux

Author

Langhorne, P. J., primary, Hughes, K. G., additional, Gough, A. J., additional, Smith, I. J., additional, Williams, M. J. M., additional, Robinson, N. J., additional, Stevens, C. L., additional, Rack, W., additional, Price, D., additional, Leonard, G. H., additional, Mahoney, A. R., additional, Haas, C., additional, and Haskell, T. G., additional

Published
2015
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18. Ice-tank studies of physical and biological sea-ice processes, in

Author

Eicken, H., Weissenberger, J., Bussmann, Ingeborg, Freitag, Johannes, Schuster, W., Delgado, F. V., Evers, K., Jochmann, P., Krembs, C., Gradinger, R., Lindemann, F., Cottier, F., Hall, R., Wadhams, P., Reisemann, M., Kuosa, H., Ikävalko, J., Leonard, G. H., Shen, H., Ackley, S., Smedsrud, L. H., Eicken, H., Weissenberger, J., Bussmann, Ingeborg, Freitag, Johannes, Schuster, W., Delgado, F. V., Evers, K., Jochmann, P., Krembs, C., Gradinger, R., Lindemann, F., Cottier, F., Hall, R., Wadhams, P., Reisemann, M., Kuosa, H., Ikävalko, J., Leonard, G. H., Shen, H., Ackley, S., and Smedsrud, L. H.

Published
1998

19. "The 2013 Erebus Glacier Tongue calving event".

Author

Stevens, C. L., Sirguey, P., Leonard, G. H., and Haskell, T. G.

Subjects
ICE calving, ICEBERGS, OCEAN circulation, GLACIERS, OCEAN currents
Abstract

The Erebus Glacier Tongue, a small floating glacier in southern McMurdo Sound, is one of the best-studied ice tongues in Antarctica. Despite this, its calving on the 27 February 2013 (UTC) was around 10 yr earlier than previously predicted. The calving was likely a result of ocean currents and the absence of fast ice. The subsequent trajectory of the newly created iceberg supports previous descriptions of the surface ocean circulation in southern McMurdo Sound. [ABSTRACT FROM AUTHOR]

Published
2013
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21. Ice-tank studies of physical and biological sea-ice processes

Author

Eicken, H., Weissenberger, J., Bussmann, I., Freitag, J., Schuster, W., Valero Delgado, F., Evers, K. -U, Jochmann, P., Krembs, C., Gradinger, R., Lindemann, F., Finlo Cottier, Hall, R., Wadhams, P., Reisemann, M., Kousa, H., Ikavalko, J., Leonard, G. H., Shen, H., Ackley, S. F., and Smedsrud, L. H.

22. Quantifying scale in ecology: Lessons from a wave-swept shore

Author

Denny, M. W., Brian Helmuth, Leonard, G. H., Harley, C. D. G., Hunt, L. J. H., and Nelson, E. K.

Subjects
scale, 1/f noise, scaling, spatial pattern, temporal pattern, rocky intertidal ecology, California, spectral analysis, wave exposure, spatial statistics

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