Warning: Your browser doesn't support all of the features in this Web site. Please view our accessibility page for more details.

Quick Search [?]WHAT IS THIS?
Searches this and other areas of the Web site as you type. Results appear on this page.
Also searches the entire Web site (with results on a new page) if you press enter or click on 'Go'.

earth and ocean sciences

Academic staff

Garret Duffy, PhD

Post-doctoral Research Fellow

Expertise: Sediment transport, marine science

Phone: +353 (0)91 492 169
Email: garret.duffynuigalway.ie

Papers

Duffy, G. ( in press) Automated Extraction of Sand Dune Morphometric Parameters from Multibeam Digital Terrain Models. In: Irish Journal of Earth Sciences. Royal Irish Academy.

Duffy, G. and Hughes Clarke, J.E. ( 2012) Measurement of Bedload Transport in a coastal sea using repeat swath bathymetry surveys. In M.Z. Li, P.R. Hill and C.R. Sherwood (eds.), Sediments, Morphology and Sedimentary Processes on Continental Shelves: Advances in technologies, research and applications. Oxford. Blackwell.

Shaw, J., Duffy, G., Taylor, R.B., Chassé, J. and Frobel, D. ( 2008) Role of a Submarine Bank in the Long-Term Evolution of the Northeast Coast of Prince Edward Island, Canada. In: Journal of Coastal Research, 24, pp. 1249-1259. Coastal Education and Research Foundation, West Palm Beach, Florida.

Duffy, G.P., and Hughes-Clarke, J.E., 2005, Application of spatial cross-correlation to detection of migration of submarine sand dunes, Journal of Geophysical Research - Earth Surface, Volume Special Section on Marine Dune and River Dune Dynamics, 110, p. 10.1029/2004JF000192.

Gardner, J.V., Dartnell, P., Mayer, L.A., Hughes-Clarke, J.E., Calder, B.R., and Duffy, G.P., 2005, Shelf-edge deltas and drowned barrier–island complexes on the Northwest Florida outer continental shelf: Geomorphology, v. 64, p. 133-166.

Duffy, G.P., and Hughes-Clarke, J.E., 2004, Application of spatial cross-correlation to detection of migration of submarine sand dunes, Sea Technology, p. 53-57.

Duffy, G.P., Hughes-Clarke, J.E., and Parrott, R., 2004, Application of current measurement and time lapsed bathymetric multibeam surveying to investigation of a Banner Bank, Mispec Bay, New Brunswick, Canada, in Hulscher, S.J.M.H., Garlan, T., and Idier, D., eds., Marine Sandwave Dynamics and River Dune Dynamics II, International Workshop: University of Twente, Enschede, The Netherlands, S.H.O.M., p. 72-78.
Zhou, J., Hughes-Clarke, J.E., Brucker, S., and Duffy, G.P., 2004, On the fly GPS tide measurement along the Saint John River: International Hydrographic Review, v. 5, p. 48-58.

Invited Presentations

Duffy, G. (2011) Spatial Data Analysis, Management and Display using GIS/MATLAB. Data Handling and Visualization Workshop, Ryan Institute, 23^rd August.

Duffy, G. (2011) Application of multi-frequency backscatter to seabed determination. Talk given at National Centre for Geocomputation, NUI Maynooth, 2^nd June, http://ncg.nuim.ie/redir.php?action="events/20110602.

Duffy, G. (2006) Sediment transport over a banner bank revealed by repetitive multibeam surveying. Talk given at Woods Hole Oceanographic Institute, 28th September.

Presentations & Posters

Omeric, E., Toal, D., Nolan, S., Ahmad, H., and Duffy, G., 2011, Design & development of assistive tools for future applications in the field of renewable ocean energy (2011). In: OCEANS 2011 IEEE, Santander.

Duffy, G., 2012, Development and application of a tool for extraction of sand dune morphometric parameters from digital terrain models: observations of characteristic distribution patterns of morphometric patterns within a large bedform field (2012). In: 55^thAnnual Irish Geological Research Meeting, UCC, 17th – 19th February.

Joshi, S., Duffy, G., and White, M., 2012, Towards sediment mobility modelling of maërl: experimental work to determine the critical bed shear stress of maërl beds in Galway Bay ( 2012). In: 55th Annual Irish Geological Research Meeting, UCC, 17th – 19th February. [Poster]

O'Connell, Y., Daly, E. Duffy, G., and Henry, T., 2012, Investigation of a Coastal Karst Area to delineate Preferential Groundwater Flowpaths using Marine and Terrestrial Electrical Resistivity Tomography, The Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP), Tucson, Arizona, March 2012. [Presentation]

Joshi, S., Duffy, G., Brown, C. and Grehan, A., 2011, Coupled hydrodynamic-sediment transport modelling in Galway Bay, West of Ireland: Sediment mobility of maërl habitats (2011). In: 54th Annual Irish Geological Research Meeting, NUI Galway, 18th – 20th February. [Poster]

Clarke, C., Duffy, G. and Leurer, K.C., 2011, Seismic Interpretation and Inversion of the Galway Bay High Frequency Datasets. In: 54th Annual Irish Geological Researchers Meeting, NUI Galway, 18th – 20th February. [Poster]

Stapleton, F. and Duffy, G., 2011, Sediment Classification of Galway Bay. In: 54th Annual Irish Geological Researchers Meeting, NUI Galway, 18th - 20th February. [Poster]

O'Connell, Y., Duffy, G., Daly, E. and Brown, C., 2011, Inversion of Marine Resistivity in a Karstic estuary using simultaneously acquired chirp pinger data. In: 54th Annual Irish Geological Researchers Meeting, NUI Galway, 18th – 20th February.

Toal, D., Nolan, S., Omerdic, E., Ahmad, H. and Duffy, G., 2010, A Flexible Seabed Survey Platform ROV LATIS. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November.

O'Connell, Y., Duffy, G., Daly, E. and Brown, C., 2010, Inversion of Marine Resistivity in a Karstic Estuary using Simultaneously Acquired Chirp Pinger Data. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November.

Joshi, S., Duffy, G. and Brown, C., 2010, Modelling the seabed in Galway Bay, West of Ireland. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November. [Poster]

Hart, A., Joshi, S., Duffy, G., Guihen, D. and White, M., 2010, Understanding a 'perfect' wave; a study of giant surf beneath the Cliffs of Moher. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November. [Poster]

Duffy, G., Toal, D. and Stapleton, F., 2010, Application of multi-frequency backscatter to seabed determination. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November.

Clarke, C., Duffy, G. and Leurer, K.C., 2010, Seismic Interpretation and Inversion of the Galway Bay high-frequency datasets. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November. [Poster]

Duffy, G., Brown, C., Williams, D.M. and Wood, W., 2009, Past and Present Sedimentary Processes in Galway Bay. In: SEABED 10, Dublin, 6th – 7th October.

Hughes-Clarke, J.E., Haigh, S., Parrott, D.R., and Duffy, G.P., 2008, The relationship of actively migrating sand bodies to the tidal streams and eddies in the Bay of Fundy - new insights through combined mapping and modeling, Atlantic Geoscience Society, 34th Annual Colloquium: Dartmouth, NS.

Hughes-Clarke, J.E., Iwanowska, K.K., Parrott, D.R., Duffy, G.P., Lamplugh, M., and Griffin, J., 2008, Inter-calibrating multi-source, multi-platform backscatter data sets to assist in compiling regional sediment type maps: Bay of Fundy, CHC2008.

Signell, R., Twomey, E., Danforth, W., Worley, C., Irwin, B., Plueddemann, A., Brandon, T., Kukula, A., Limeburner, D., Geyer, W.R., and Duffy, G.P., 2007, Sediment dynamics of a tidal sand bank: Middle Ground, Massachusetts, Estuarine and Coastal Modelling, Volume 10: Newport, RI.

Duffy, G.P., and Hughes-Clarke, J.E., 2005, Bedform celerity and sediment transport on a banner bank, Saint John, New Brunswick, 12th Canadian Coastal Conference: Dartmouth, N.S.

Duffy, G.P., and Hughes-Clarke, J.E., 2004, Measurement of bedform migration rate by application of spatial correlation, Canadian Hydrographic Conference: Ottawa, ON.

Duffy, G.P., Hughes-Clarke, J.E., and Parrott, R., 2004, Monitoring change between time-lapsed multibeam surveys using spatial cross-correlation, 32nd International Geological Congress: Florence, Italy.

Duffy, G., Brown, C., Hartnett, M., Leurer, K.C., Marsh, I., Mohn, C., Nash, S., Quinlan, N., and White, M., 2008, Scoping the ocean's energy resources, 2nd Annual Environmental Change Institute Research Day: NUI, Galway.

Duffy, G.P., Hughes-Clarke, J.E., and Parrott, R., 2003, Monitoring the temporal behaviour of the submarine sand dunes of Mispec Bay, Saint John, N.B., through use of monthly multibeam acoustic surveys., 1st Joint Meeting, Geological Society of America Northeastern Section and Atlantic Geoscience Society: Halifax, Nova Scotia.

Posters

Stapleton, F. and Duffy, G., Dual-Frequency Sediment Classification in Galway Bay, Irish Geological Research Meeting, National University of Galway, 2011. (Download PDF [1.5 MB])

Clarke, C., Duffy, G. and Leurer, K., Seismic Interpretation and Inversion of the Galway Bay High-Frequency Datasets, Irish Geological Research Meeting, National University of Galway, 2011. (Download PDF [7.2 MB])

Back to Garret Duffy's web page
Back to Academic Staff

Earth and Ocean Sciences, School of Natural Sciences
National University of Ireland, Galway, University Road, Galway, Ireland.
Phone: +353 (0)91 492 126, E-mail: Earth and Ocean Sciences
This page was last updated Tuesday, September 18, 2012

			Garret Duffy, PhD Post-doctoral Research Fellow Expertise: Sediment transport, marine science Phone: +353 (0)91 492 169 Email: garret.duffynuigalway.ie

Papers Duffy, G. ( in press) Automated Extraction of Sand Dune Morphometric Parameters from Multibeam Digital Terrain Models. In: Irish Journal of Earth Sciences. Royal Irish Academy. Duffy, G. and Hughes Clarke, J.E. ( 2012) Measurement of Bedload Transport in a coastal sea using repeat swath bathymetry surveys. In M.Z. Li, P.R. Hill and C.R. Sherwood (eds.), Sediments, Morphology and Sedimentary Processes on Continental Shelves: Advances in technologies, research and applications. Oxford. Blackwell. Shaw, J., Duffy, G., Taylor, R.B., Chassé, J. and Frobel, D. ( 2008) Role of a Submarine Bank in the Long-Term Evolution of the Northeast Coast of Prince Edward Island, Canada. In: Journal of Coastal Research, 24, pp. 1249-1259. Coastal Education and Research Foundation, West Palm Beach, Florida. Duffy, G.P., and Hughes-Clarke, J.E., 2005, Application of spatial cross-correlation to detection of migration of submarine sand dunes, Journal of Geophysical Research - Earth Surface, Volume Special Section on Marine Dune and River Dune Dynamics, 110, p. 10.1029/2004JF000192. Gardner, J.V., Dartnell, P., Mayer, L.A., Hughes-Clarke, J.E., Calder, B.R., and Duffy, G.P., 2005, Shelf-edge deltas and drowned barrier–island complexes on the Northwest Florida outer continental shelf: Geomorphology, v. 64, p. 133-166. Duffy, G.P., and Hughes-Clarke, J.E., 2004, Application of spatial cross-correlation to detection of migration of submarine sand dunes, Sea Technology, p. 53-57. Duffy, G.P., Hughes-Clarke, J.E., and Parrott, R., 2004, Application of current measurement and time lapsed bathymetric multibeam surveying to investigation of a Banner Bank, Mispec Bay, New Brunswick, Canada, in Hulscher, S.J.M.H., Garlan, T., and Idier, D., eds., Marine Sandwave Dynamics and River Dune Dynamics II, International Workshop: University of Twente, Enschede, The Netherlands, S.H.O.M., p. 72-78. Zhou, J., Hughes-Clarke, J.E., Brucker, S., and Duffy, G.P., 2004, On the fly GPS tide measurement along the Saint John River: International Hydrographic Review, v. 5, p. 48-58.

Invited Presentations Duffy, G. (2011) Spatial Data Analysis, Management and Display using GIS/MATLAB. Data Handling and Visualization Workshop, Ryan Institute, 23^rd August. Duffy, G. (2011) Application of multi-frequency backscatter to seabed determination. Talk given at National Centre for Geocomputation, NUI Maynooth, 2^nd June, http://ncg.nuim.ie/redir.php?action="events/20110602. Duffy, G. (2006) Sediment transport over a banner bank revealed by repetitive multibeam surveying. Talk given at Woods Hole Oceanographic Institute, 28th September.

Presentations & Posters Omeric, E., Toal, D., Nolan, S., Ahmad, H., and Duffy, G., 2011, Design & development of assistive tools for future applications in the field of renewable ocean energy (2011). In: OCEANS 2011 IEEE, Santander. Duffy, G., 2012, Development and application of a tool for extraction of sand dune morphometric parameters from digital terrain models: observations of characteristic distribution patterns of morphometric patterns within a large bedform field (2012). In: 55^thAnnual Irish Geological Research Meeting, UCC, 17th – 19th February. Joshi, S., Duffy, G., and White, M., 2012, Towards sediment mobility modelling of maërl: experimental work to determine the critical bed shear stress of maërl beds in Galway Bay ( 2012). In: 55th Annual Irish Geological Research Meeting, UCC, 17th – 19th February. [Poster] O'Connell, Y., Daly, E. Duffy, G., and Henry, T., 2012, Investigation of a Coastal Karst Area to delineate Preferential Groundwater Flowpaths using Marine and Terrestrial Electrical Resistivity Tomography, The Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP), Tucson, Arizona, March 2012. [Presentation] Joshi, S., Duffy, G., Brown, C. and Grehan, A., 2011, Coupled hydrodynamic-sediment transport modelling in Galway Bay, West of Ireland: Sediment mobility of maërl habitats (2011). In: 54th Annual Irish Geological Research Meeting, NUI Galway, 18th – 20th February. [Poster] Clarke, C., Duffy, G. and Leurer, K.C., 2011, Seismic Interpretation and Inversion of the Galway Bay High Frequency Datasets. In: 54th Annual Irish Geological Researchers Meeting, NUI Galway, 18th – 20th February. [Poster] Stapleton, F. and Duffy, G., 2011, Sediment Classification of Galway Bay. In: 54th Annual Irish Geological Researchers Meeting, NUI Galway, 18th - 20th February. [Poster] O'Connell, Y., Duffy, G., Daly, E. and Brown, C., 2011, Inversion of Marine Resistivity in a Karstic estuary using simultaneously acquired chirp pinger data. In: 54th Annual Irish Geological Researchers Meeting, NUI Galway, 18th – 20th February. Toal, D., Nolan, S., Omerdic, E., Ahmad, H. and Duffy, G., 2010, A Flexible Seabed Survey Platform ROV LATIS. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November. O'Connell, Y., Duffy, G., Daly, E. and Brown, C., 2010, Inversion of Marine Resistivity in a Karstic Estuary using Simultaneously Acquired Chirp Pinger Data. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November. Joshi, S., Duffy, G. and Brown, C., 2010, Modelling the seabed in Galway Bay, West of Ireland. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November. [Poster] Hart, A., Joshi, S., Duffy, G., Guihen, D. and White, M., 2010, Understanding a 'perfect' wave; a study of giant surf beneath the Cliffs of Moher. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November. [Poster] Duffy, G., Toal, D. and Stapleton, F., 2010, Application of multi-frequency backscatter to seabed determination. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November. Clarke, C., Duffy, G. and Leurer, K.C., 2010, Seismic Interpretation and Inversion of the Galway Bay high-frequency datasets. In: GEOSCIENCE 2010, Dublin Castle, 3rd – 4th November. [Poster] Duffy, G., Brown, C., Williams, D.M. and Wood, W., 2009, Past and Present Sedimentary Processes in Galway Bay. In: SEABED 10, Dublin, 6th – 7th October. Hughes-Clarke, J.E., Haigh, S., Parrott, D.R., and Duffy, G.P., 2008, The relationship of actively migrating sand bodies to the tidal streams and eddies in the Bay of Fundy - new insights through combined mapping and modeling, Atlantic Geoscience Society, 34th Annual Colloquium: Dartmouth, NS. Hughes-Clarke, J.E., Iwanowska, K.K., Parrott, D.R., Duffy, G.P., Lamplugh, M., and Griffin, J., 2008, Inter-calibrating multi-source, multi-platform backscatter data sets to assist in compiling regional sediment type maps: Bay of Fundy, CHC2008. Signell, R., Twomey, E., Danforth, W., Worley, C., Irwin, B., Plueddemann, A., Brandon, T., Kukula, A., Limeburner, D., Geyer, W.R., and Duffy, G.P., 2007, Sediment dynamics of a tidal sand bank: Middle Ground, Massachusetts, Estuarine and Coastal Modelling, Volume 10: Newport, RI. Duffy, G.P., and Hughes-Clarke, J.E., 2005, Bedform celerity and sediment transport on a banner bank, Saint John, New Brunswick, 12th Canadian Coastal Conference: Dartmouth, N.S. Duffy, G.P., and Hughes-Clarke, J.E., 2004, Measurement of bedform migration rate by application of spatial correlation, Canadian Hydrographic Conference: Ottawa, ON. Duffy, G.P., Hughes-Clarke, J.E., and Parrott, R., 2004, Monitoring change between time-lapsed multibeam surveys using spatial cross-correlation, 32nd International Geological Congress: Florence, Italy. Duffy, G., Brown, C., Hartnett, M., Leurer, K.C., Marsh, I., Mohn, C., Nash, S., Quinlan, N., and White, M., 2008, Scoping the ocean's energy resources, 2nd Annual Environmental Change Institute Research Day: NUI, Galway. Duffy, G.P., Hughes-Clarke, J.E., and Parrott, R., 2003, Monitoring the temporal behaviour of the submarine sand dunes of Mispec Bay, Saint John, N.B., through use of monthly multibeam acoustic surveys., 1st Joint Meeting, Geological Society of America Northeastern Section and Atlantic Geoscience Society: Halifax, Nova Scotia.

Posters Stapleton, F. and Duffy, G., Dual-Frequency Sediment Classification in Galway Bay, Irish Geological Research Meeting, National University of Galway, 2011. (Download PDF [1.5 MB]) Clarke, C., Duffy, G. and Leurer, K., Seismic Interpretation and Inversion of the Galway Bay High-Frequency Datasets, Irish Geological Research Meeting, National University of Galway, 2011. (Download PDF [7.2 MB])
Back to Garret Duffy's web page Back to Academic Staff