Heather Stewart

Heather Stewart

Marine geologist
BGS Edinburgh

Twitter: @HeatherMarGeo

Heather Stewart’s Biography

  • 2015 – ongoing : PhD Research Student (part-time) at University of Stirling
  • 2001 – ongoing : Marine Geologist, British Geological Survey
  • 2000 –2001 : Marine Geologist with Caledonian Geotech
  • 1997 –2001 : BSc (Hons), University of Glasgow, Geology and Applied Geology

ORCID: 0000000255906972

Current projects and collaborations

  • Mapping the offshore sea-bed substrate, geomorphology and Quaternary geology utilising shallow seismic, sidescan sonar, multibeam echosounder and sample data. Development/promotion of new and novel techniques for acoustic data interpretation.
  • Marine Sea-bed Mapping Initiative focusing on the glacial geomorphology and evolution offshore UK. This project is linked to my current PhD studies at the University of Stirling with Dr Tom Bradwell looking at the impact of glacial/interglacial cycles and ice streaming on the Quaternary landforms and sediments in the North Sea Basin.
  • Multidisciplinary study of hadal zones. Including subduction trenches such as the South Shetland Trench (sub-Antarctica), Kermadec Trench (SW Pacific) and Atacama Trench (E Pacific). This work is in collaboration with Dr Alan Jamieson (University of Newcastle). I am also the geologist for the Five Deeps Expedition.
  • 2019 –2021 : HOT: Hadal zones of our Overseas Territories is a multi-disciplinary program that will deliver a step-change in our understanding of the fundamental ecological and geological processes in the South Sandwich Trench (SST). The SST reaches water depths of around 8100m and uniquely is the only sub-zero hadal environment on Earth. This project will improve understanding of marine biodiversity and geodiversity to fill an identified knowledge gap supporting the existing Marine Protected Area and obligations under the Convention of Biological Diversity. Darwin Initiative (Defra) funded grant through Darwin Plus Round 7.
  • EMODNET Geology Workpackage Leader for Submerged Landscapes.
  • Modelling the distribution of vulnerable ecosystems: Ongoing research with Dr Kerry Howell (University of Plymouth, Mapping the Deep Project Video) looking at modelling the distribution of Vulnerable Marine Ecosystems (Annex I of the Habitats Directive) in deep-water areas west of the United Kingdom.

NERC Open Research Archive — Heather Stewart

Key papers

  • STEWART, H A, and Jamieson, A J. 2019. The five deeps: the location and depth of the deepest place in each of the world’s oceans. Earth-Science Reviews, 197, 102896.
  • Jamieson, A J, STEWART, H A, Rowden, A A, Clark, M R. 2019. Geomorphology and benthic habitats of the Kermadec Trench, SW Pacific Ocean. In: Harris, P.T, Baker, E.K (Editors). Seafloor geomorphology as benthic habitat: GeoHab Atlas of seafloor geomorphic features and benthic habitats (Second Edition). Elsevier Insights series. (Elsevier, London, UK).
  • Roberts, D H, Grimoldi, E, Callard, L, Evans, D J A, Clark, C D, STEWART, H A, Dove, D, Saher, M, Ó Cofaigh, C, Chiverrell, R C, Bateman, M D, Moreton, S G, Bradwell, T, Fabel, D, and Medialdea, A. 2019. The mixed-bed imprint of the North Sea Lobe in the western North Sea. Earth Surface Processes and Landforms, v 44, 1233-1258.
  • STEWART, H A, Jamieson, A J, and Bongiovanni, C. 2019. Exploring the Deepest Points on Planet Earth. Hydro International Magazine, Vol. 24 (3), 22-25. https://www.hydro-international.com/magazine/may-june-2019
  • Purser, A, Herr, H, Dreutter, S, Dorschel, B, Glud, R N, Hehemann, L, Hoge, U, Jamieson, A J, Linley, T D, STEWART, H A, and Wenzhöfer, F. 2019. Depression chains in seafloor of contrasting morphology, Atacama Trench margin: a comment on Marsh et al. (2018). Royal Society Open Science, 6 (3), 182053. https://doi.org/10.1098/rsos.182053
  • STEWART, H A, and Jamieson, A J. 2018. Habitat heterogeneity of hadal trenches: considerations and implications for future studies. Progress in Oceanography, Vol. 161, 47-65. https://doi.org/10.1016/j.pocean.2018.01.007
  • Collart, T, Verreydt, W, Hernàndez-Molina, F J, Llave, E, Léon, R, Gomes-Ballesteros, M, Pons-Branchu, E, STEWART, H, and Van Rooij, D. 2018. Sedimentary processes and cold-water coral mini-mounds at the Ferrol canyon head, NW Iberian margin. Progress in Oceanography. https://doi.org/10.1016/j.pocean.2018.02.027
  • Neat , F C, Jamieson, A J, STEWART, H A, Narayanaswamy, B E, Collie, N, Stewart, M, and Linley, T D. 2018. Visual evidence of reduced seafloor conditions and indications of a cold-seep ecosystem from the Hatton–Rockall basin (NE Atlantic). Journal of the Marine Biological Association of the United Kingdom https://doi.org/10.1017/S0025315418000115
  • STEWART, H A, and Long, D. 2016. Glacigenic debris flows observed in 3D seismic high-resolution seafloor imagery, Faroe–Shetland Channel, NE Atlantic. From: Dowdeswell, J A, Canals, M, Jakobsson, M, Todd, B J, Dowdeswell, E K and Hogan, K A (eds). Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient. Geological Society, London, Memoirs, 46. © The Geological Society of London, 2016. DOI: 10.1144/M46.94
  • Amaro, T, Huvenne, V A I, Allcock, A L, Aslam, T, Davies, J S, Danovaro, R, De Stigter, H C, Duineveld, G C A, Gambi, C, Gooday, A J, Gunton, L M, Hall, R, Howell, K L, Ingels, J, Kiriakoulakis, K, Kershaw, C E, Lavaleye, M S S, Robert, K, STEWART, H A, Van Rooij, D, White, M, and Wilson, A M. 2016. The Whittard Canyon – a case study of submarine processes. Progress in Oceanography. doi: 10.1016/j.pocean.2016.06.003
  • Goff, J A, Gulick, S P S, Perez Cruz, L, STEWART, H A, Davis, M, Duncan, D, Saustrup, S, Sanford, J, and Urrutia Fucugauchi, J. 2016. Solution pans and linear sand bedforms on the bare-rock limestone shelf of the Campeche Bank, Yucatán Peninsula, Mexico. Continental Shelf Research, 117, 57-66. doi: 10.1016/j.csr.2016.02.005
  • Davies, J S, STEWART, H A, Narayanaswamy, B E, Jacobs, C, Spicer, J, Golding, N, and Howell, K L. 2015. Benthic assemblages of the Anton Dohrn Seamount (NE Atlantic): defining deep-sea biotopes to support habitat mapping and management efforts with a focus on Vulnerable Marine Ecosystems. PLOS One, Vol 10(5): e0124815. doi:10.1371/journal.pone.0124815
  • Lark, R M , Marchant, B P, Dove, D, Green, S L, STEWART, H, and Diesing, M. 2015. Combining observations with acoustic swath bathymetry and backscatter to map seabed sediment texture classes: the empirical best linear un-biased predictor. Sedimentary Geology, Vol. 328, 17-32. doi: 10.1016/j.sedgeo.2015.07.012
  • Piechaud, N, Downie, A, STEWART, H A, and Howell, K L. 2015. The impact of modelling method selection on predicted extent and distribution of deep-sea benthic assemblages. Earth and Environmental Science Transactions of the Royal Society of Edinburgh. Vol. 105(4), 251-261. doi: 10.1017/S1755691015000122
  • Ross, L K, Ross, R E, STEWART, H A, and Howell, K L. 2015. The influence of data resolution on predicted distribution and estimates of extent of current protection of three ‘listed’ deep-sea habitats. PLOS ONE, Vol 10(10), e0140061. doi: 10.1371/journal.pone.0140061.
  • STEWART, H A. 2015. What lies beneath: offshore data acquisition and how we turn those data into science. Proceedings of the Open University Geological Society, Vol. 1, 23-33. ISSN: 2058-5209. http://nora.nerc.ac.uk/510725/
  • Davies, J S, Howell, K L, STEWART, H A, Guinan, J, and Golding, N. 2014. Defining biological assemblages (biotopes) of conservation interest in the submarine canyons of the South West Approaches (offshore United Kingdom) for use in marine habitat mapping. Deep-Sea Res. II. Vol. 104, 208-229. doi: 10.1016/j.dsr2.2014.02.001
  • Diesing, M, Green, S L, Stephens, D, Lark, R M, STEWART, H A, and Dove, D. 2014. Multibeam acoustic data interpretation for seabed mapping: Comparison of manual, geostatistical, object-based image analysis and machine learning approaches. Continental Shelf Research. doi: 10.1016/j.csr.2014.05.004
  • Pham, C K, Ramirez-Llodra, E, Alt, C H S, Amaro, T, Bergmann, M, Canals, M, Company, J B, Davies, J, Duineveld, G, Galgani, F, Howell, KL, Huvenne, V A I, Isidro, E, Jones, D O B, Lastras, G, Morato, T, Gomes-Pereira, J N, Purser, A, STEWART, H, Tojeira, I, Tubau, X, Van Rooij, D, and Tyler, P A. 2014. Marine litter distribution and abundance in European Seas, from the shelf to deep basins. PLOS ONE, Vol 9(4), e95839. doi: 10.1371/journal.pone.0095839
  • STEWART, H A, Davies, J S, Guinan, J C, and Howell, K L. 2014. The Dangeard and Explorer Canyons, South Western Approaches UK: Geology, sedimentology and newly discovered cold-water coral mini-mounds. Deep-Sea Res. II. Vol. 104, 230-244. doi: http://dx.doi.org/10.1016/j.dsr2.2013.08.018
  • Lark, R M, Dove, D, Green, S L, Richardson, A E, STEWART, H, and Stevenson, A. 2012. Spatial prediction of seabed sediment texture classes by cokriging from a legacy database of point observations. Sedimentary Geology, Vol. 281, 35-49.
  • STEWART, H A, and Long, D. 2012. The timing and significance of gully incision on the eastern flank of the Faroe–Shetland Channel and its impact on seafloor infrastructure. Near Surface Geophysics, Vol. 10, 317-331. doi: 10.3997/1873-0604. 2012014
  • Howell, K L, Holt, R, Endrino, I P, and STEWART, H A. 2011. When the species is also a habitat: application of predictive species modelling software Maxent to biogenic habitat distribution modelling. Biological Conservation, Vol. 144, 265-2665.
  • Stevenson, A, STEWART, H, and Ziska, H. 2011. Sea-bed geology and Environment. 229-238 in Ritchie, J D, Ziska, H, Johnson, H, and Evans, D (editors). 2011. Geology of the Faroe-Shetland Basin and adjacent areas. British Geological Survey Research Report, RR/11/01; Jarðfeingi Research Report RR/11/01.

Professional associations

  • 2002 – Fellow of the Geological Society of London

Boards and committees

  • 2012 – ongoing : Convener of the MASTS Deep-Sea Forum
  • 2016 – ongoing : Editor Scottish Journal of Geology
  • 2016 – ongoing : Member International Scientific Committee for GeoHab

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