Profiles

David Gwyther

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David Gwyther2

David Gwyther

Antarctic Coastal Ocean Modeller

IMAS Hobart Waterfront Building Level 3, Hobart CBD Campuses

+61 (0)3 6226 6379 (phone)

david.gwyther@utas.edu.au

Achievements

My biggest achievement to date has been receiving a Fulbright Postgraduate Scholarship in 2013. The Fulbright Postgraduate Scholarship is, 'a program of highly competitive, merit-based grants for international educational exchange for students, scholars, teachers, professionals, scientists and artists, founded by United States Senator J. William Fulbright in 1946.

The program was established to increase mutual understanding between the people of the United States and other countries through the exchange of persons, knowledge, and skills.' During my scholarship I was a visiting research scholar at the University of Texas at Austin, where I undertook research to improve simulations of ice shelves.

General Responsibilities

Research and Projects

Increased heat circulation leads to increased sub-ice shelf melting, and raising of sea level by higher ice discharge from the Antarctic ice sheet. I am researching this impact, using remote sensing data and global climate models to inform a 3-dimensional ocean model. My research is supported by the CSIRO and UTAS through the Quantitative Marine Science PhD program.

  • I am highly skilled in scientific communication (oral and written).
  • I am dedicated and motivated to research.
  • I am extremely computer savvy, as well as confident at quickly picking up new software.

Current Projects

I am currently focussing on investigating the link between the roughness of the ice at the bottom of large ice shelves and melting/freezing. It is thought that this roughness is an important control on the magnitude and/or distribution of melt/free, but it is very poorly understood - mainly due to the difficulties in observing this submarine realm. Through use of idealised ocean models, I can simulate this environment and hope to improve future ice shelf - ocean models.

Publications

Gwyther, D.E. et al., 2014. Simulated melt rates for the Totten and Dalton ice shelves. Ocean Science, 10(3), pp.267–279. Available at: http://www.ocean-sci.net/10/267/2014/

View more on Dr David Gwyther in WARP

Fields of Research

  • Physical Oceanography (040503)
  • Glaciology (040602)
  • Earth Sciences (049999)
  • Climate Change Processes (040104)
  • Geophysical Fluid Dynamics (040403)

Research Objectives

  • Antarctic and Sub-Antarctic Oceanography (969901)
  • Effects of Climate Change and Variability on Antarctic and Sub-Antarctic Environments (excl. Social Impacts) (960306)
  • Marine Oceanic Processes (excl. climate related) (969902)
  • Climate Change Models (960303)

Publications

Total publications

20

Highlighted publications

(3 outputs)
YearTypeCitationAltmetrics
2016Journal ArticleGwyther DE, Cougnon EA, Galton-Fenzi BK, Roberts JL, Hunter JR, et al., 'Modelling the response of ice shelf basal melting to different ocean cavity environmental regimes', Annals of Glaciology, 57, (73) pp. 131-141. ISSN 0260-3055 (2016) [Refereed Article]

DOI: 10.1017/aog.2016.31 [eCite] [Details]

Co-authors: Cougnon EA; Galton-Fenzi BK; Roberts JL; Hunter JR

Tweet

2015Journal ArticleGwyther DE, Galton-Fenzi BK, Dinniman MS, Roberts JL, Hunter JR, 'The effect of basal friction on melting and freezing in ice shelf-ocean models', Ocean Modelling, 95 pp. 38-52. ISSN 1463-5003 (2015) [Refereed Article]

DOI: 10.1016/j.ocemod.2015.09.004 [eCite] [Details]

Citations: Scopus - 7Web of Science - 7

Co-authors: Galton-Fenzi BK; Roberts JL; Hunter JR

Tweet

2014Journal ArticleGwyther DE, Galton-Fenzi B, Hunter JR, Roberts Jason, 'Simulated melt rates for the Totten and Dalton ice shelves', Ocean Science, 10, (3) pp. 267-279. ISSN 1812-0792 (2014) [Refereed Article]

DOI: 10.5194/os-10-267-2014 [eCite] [Details]

Citations: Scopus - 12Web of Science - 15

Co-authors: Galton-Fenzi B; Hunter JR; Roberts Jason

Tweet

Journal Article

(6 outputs)
YearCitationAltmetrics
2017Greene CA, Gwyther DE, Blankenship DD, 'Antarctic mapping tools for MATLAB', Computers and Geosciences, 104 pp. 151-157. ISSN 0098-3004 (2017) [Refereed Article]

DOI: 10.1016/j.cageo.2016.08.003 [eCite] [Details]

Citations: Web of Science - 1

Tweet

2017Roberts J, Galton-Fenzi BK, Paolo FS, Donnelly C, Gwyther DE, et al., 'Ocean forced variability of Totten Glacier mass loss', Geological Society Special Publication, 461 pp. 1-12. ISSN 0305-8719 (2017) [Refereed Article]

DOI: 10.1144/SP461.6 [eCite] [Details]

Co-authors: Roberts J; Galton-Fenzi BK; Warner R; van Ommen T

Tweet

2016Gwyther DE, Cougnon EA, Galton-Fenzi BK, Roberts JL, Hunter JR, et al., 'Modelling the response of ice shelf basal melting to different ocean cavity environmental regimes', Annals of Glaciology, 57, (73) pp. 131-141. ISSN 0260-3055 (2016) [Refereed Article]

DOI: 10.1017/aog.2016.31 [eCite] [Details]

Co-authors: Cougnon EA; Galton-Fenzi BK; Roberts JL; Hunter JR

Tweet

2016Sun S, Cornford SL, Gwyther DE, Gladstone RM, Galton-Fenzi BK, et al., 'Impact of ocean forcing on the Aurora Basin in the 21st and 22nd centuries', Annals of Glaciology, 57, (73) pp. 79-86. ISSN 0260-3055 (2016) [Refereed Article]

DOI: 10.1017/aog.2016.27 [eCite] [Details]

Citations: Scopus - 1Web of Science - 1

Co-authors: Galton-Fenzi BK

Tweet

2015Gwyther DE, Galton-Fenzi BK, Dinniman MS, Roberts JL, Hunter JR, 'The effect of basal friction on melting and freezing in ice shelf-ocean models', Ocean Modelling, 95 pp. 38-52. ISSN 1463-5003 (2015) [Refereed Article]

DOI: 10.1016/j.ocemod.2015.09.004 [eCite] [Details]

Citations: Scopus - 7Web of Science - 7

Co-authors: Galton-Fenzi BK; Roberts JL; Hunter JR

Tweet

2014Gwyther DE, Galton-Fenzi B, Hunter JR, Roberts Jason, 'Simulated melt rates for the Totten and Dalton ice shelves', Ocean Science, 10, (3) pp. 267-279. ISSN 1812-0792 (2014) [Refereed Article]

DOI: 10.5194/os-10-267-2014 [eCite] [Details]

Citations: Scopus - 12Web of Science - 15

Co-authors: Galton-Fenzi B; Hunter JR; Roberts Jason

Tweet

Conference Publication

(7 outputs)
YearCitationAltmetrics
2017Greenbaum J, Schroeder D, Grima C, Habbal F, Dow C, et al., 'Morphological evidence and direct estimates of rapid melting beneath Totten Glacier Ice Shelf, East Antarctica', Geophysical Research Abstracts, 23-28 April, Vienna, Austria, pp. 1559. ISSN 1607-7962 (2017) [Conference Extract]

[eCite] [Details]

Co-authors: Roberts J; van Ommen TD

2016Asay-Davis X, Galton-Fenzi B, Gwyther D, Jourdain N, Martin DF, et al., 'Results from ISOMIP+ and MISOMIP1, two interrelated marine ice sheet and ocean model intercomparison projects (Invited)', American Geophysical Union Fall Meeting abstracts, 12-16 December 2016, San Francicso, USA (2016) [Conference Extract]

[eCite] [Details]

Co-authors: Galton-Fenzi B

2016Greenbaum J, Blankenship D, Schroeder D, Gwyther D, Young D, et al., 'Basal terraces beneath Totten Glacier, East Antarctica', International Glaciological Society: International Symposium on Interactions of Ice Sheets and Glaciers with the Ocean Abstracts, 10-15 July 2016, La Jolla, California, pp. 74A2127. (2016) [Conference Extract]

[eCite] [Details]

Co-authors: Roberts J; Warner RC; van Ommen TD

2015Orsi A, Zielinski N, Durkin W, Clark P, Wiederwohl C, et al., 'On the Revealing Firsthand Probing of Ocean-Ice-Atmosphere Interactions off Sabrina Coast During NBP1402', AGU Fall Meeting Program, 15-19 December 2014, San Francisco, United States, pp. PP24A-02. (2015) [Conference Extract]

[eCite] [Details]

Co-authors: Rosenberg MA

2013Gwyther DE, Galton-Fenzi B, Hunter JR, Roberts Jason, 'Melt rate predictions for the Totten and Dalton ice shelves from a numerical model', AGU Fall Meeting Program, 9-13 December 2013, San Francisco, United States, pp. GC31A-1022. (2013) [Conference Extract]

[eCite] [Details]

Co-authors: Galton-Fenzi B; Hunter JR; Roberts Jason

2013Gwyther DE, Galton-Fenzi B, Hunter JR, Roberts Jason, 'Oceanic heat flux, on-shelf flow and basal melting of the Totten Glacier, East Antarctica', Strategic Science in Antarctica conference program, 24-28 June 2013, Hobart, Australia, pp. 1. (2013) [Conference Extract]

[eCite] [Details]

Co-authors: Galton-Fenzi B; Hunter JR; Roberts Jason

2012Gwyther DE, Galton-Fenzi B, Roberts Jason, 'Controls of the basal mass balance of floating ice shelves', 18th Australasian Fluid Mechanics Conference, 3-7 December 2012, Launceston, Tasmania, pp. 1-4. (2012) [Refereed Conference Paper]

[eCite] [Details]

Co-authors: Galton-Fenzi B; Roberts Jason

Other Public Output

(7 outputs)
YearCitationAltmetrics
2016Graham F, Gwyther D, Jong L, Cook S, 'Tipping point: how we predict when Antarctica's melting ice sheets will flood the seas', The Conversation, 14 March (2016) [Newspaper Article]

[eCite] [Details]

Co-authors: Graham F; Jong L; Cook S

2014Gwyther DE, 'Model year for Fulbright student', Australian Antarctic Magazine - Wendy Pyper, Australian Antarctic Division, Kingston, Tasmania, 2013, 24, p. 15. (2014) [Magazine Article]

[eCite] [Details]

2014Gwyther DE, '2013 Fulbright Postgraduate Scholar heads south', The Fulbrighter, Australian-American Fulbright Commission, Canberra, Australia, 2014, July, p. 4. (2014) [Magazine Article]

[eCite] [Details]

2014Gwyther DE, 'ACE Fulbrighter Back Home', News Page, Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart, Tasmania, 31 October 2014, Online (2014) [Internal Newsletter]

[eCite] [Details]

2013Gwyther DE, 'Ocean-ice shelf modeller wins Fulbright Scholarship', Latest News, Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart, Tasmania, 3 April 2013, Online (2013) [Internal Newsletter]

[eCite] [Details]

2013Shellie RA, Gwyther DE, 'Antarctic research focus for our 2013 Fulbright Scholars', Latest News, University of Tasmania, Hobart, Tasmania, Online, 22 March 2013 (2013) [Internal Newsletter]

[eCite] [Details]

Co-authors: Shellie RA

2011Gwyther DE, Galton-Fenzi B, Williams GD, 'Model simulations investigate Totten thinning', Australian Antarctic Magazine, Australian Antarctic Division, Kingston, Tasmania, online, 21, pp. 14-15. (2011) [Magazine Article]

[eCite] [Details]

Co-authors: Galton-Fenzi B; Williams GD

Grants & Funding

Funding Summary

Number of grants

4

Total funding

$40,631

Projects

Intercomparison models for assessing ice shelf-ocean interaction (2017)$0
Description
Projections of future sea level rise suffer from uncertainties in the contribution from the Antarctic ice sheet. One of the major drivers of Antarctic ice mass loss is through interaction with the ocean. Numerical models offer one of the few logistically feasible avenues for improving the understanding of this interaction. This project will undertake a series of ocean-ice shelf model experiments, contributing to a community-wide ocean/ice sheet model intercomparison.
Funding
National Computational Infrastructure ($0)
Scheme
Merit Allocation Scheme
Administered By
University of Tasmania
Research Team
Gwyther DE
Year
2017
Intercomparison models for assessing ice shelf-ocean interaction (2016)$0
Description
This project will undertake a series of ocean-ice shelf model experiments, contributing to a community-wide ocean/ice sheet model intercomparison.
Funding
National Computational Infrastructure ($0)
Scheme
Merit Allocation Scheme
Administered By
University of Tasmania
Research Team
Gwyther DE
Year
2016
2016 ROMS Asia-Pacific Workshop (2016)$26,242
Description
Understanding ocean dynamics and interactions at high latitudes, with sea ice, atmosphere and the ice sheets is critically important for both safe and efficient operations in polar regions and for societal adaptation to climate change. These issues and impacts are of national and international importance and include; understanding current sea level rise and the contribution to future sea level rise, operational sea ice forecasting and assimilation, and the basic understanding of ice/ocean/atmosphere processes. Coupled ocean/sea-ice/atmosphere models have proven to be a valuable tool for examining these processes. The Regional Ocean Modelling System (ROMS) is a commonly used ocean model which is designed to handle regional-scale simulations, with a terrain-following vertical coordinate which can increase resolution at sea floor and sea surface. The model has a long development history and has previously been supported by the Office of Naval Research (ONR). The workshop will cover theory, development and application of ocean models (and will be general enough to apply to different ocean modelling systems) and will explore ocean science from the continental shelf break to the ice shelf.This grant will support the running of the 2016 ROMS workshop.
Funding
Office of Naval Research Global ($26,242)
Scheme
Grant- Navy and Marine Corps Program
Administered By
University of Tasmania
Research Team
Galton-Fenzi B; Gwyther DE
Year
2016
Eddy transport of ocean heat to Antarctic ice shelves: fundamental dynamics and climate impact (2016)$14,389
Description
The aim of this proposal is to initiate a large project to investigate the processes mentioned above by developing a state-of-the-art model configuration, using the Regional Ocean Modeling System (ROMS), with two key features:1. The domain of this model covers Antarctica and the continental shelf seas, northwards to the abyssal ocean. From observations we know that in certain regions significant amounts of relatively warm water can reach ice shelves and cause large basal melt rates, whereas for other ice shelves that are well protected from intrusions of warm water, basal melt rates are comparatively lower. Only the use of a full circum-Antarctic domain will allow us to compare the relevant processes in different regions.2. The spatial resolution of this model will be 1 km, which has been shown to be the minimum resolution required to resolve the dynamics of mesoscale eddies relevant to the transport of warm waters to the shelf.
Funding
University of Tasmania ($14,389)
Scheme
Grant-Research Enhancement (REGS)
Administered By
University of Tasmania
Research Team
Klocker A; Gwyther DE; Galton-Fenzi B
Year
2016

Research Supervision

Current

1

Current

DegreeTitleCommenced
PhDTidal Melting of Antarctic Ice Shelves Since Last Glacial Maximum2016