Joshua is a marine geoscientist who has worked on large-volume submarine landslides and turbidity currents on the eastern North Atlantic Margin, with a specific focus of their frequencies and relationship to eustatic sea level and tectonics through the Quaternary. He Joined the School of Geography and Environment in May 2017 as a research assistant in African lake basin sedimentology and hydrology.
His PhD research, completed at the University of Southampton in March 2017, investigated the role of eustatic sea level in controlling the recurrence rates of turbidity currents in the large Nazaré submarine canyon, off the coast of Portugal, using stratigraphic age models and a range of statistical methods. This work contributed to the understanding of large-volume turbidity current geohazards within submarine canyons, the effect of eustatic sea level on their recurrence, and helped elucidate the mechanisms through which they are triggered.
His PhD also involved analysis of large volume and potentially tsunamigenic submarine landslides originating on the Norwegian Margin during the last 100,000 years. This research aimed to describe the sedimentology of several of these large landslides, and better constrain their ages and triggering mechanisms. This has led to the development of a new model of slope-parallel submarine landslide propagation.
Prior to beginning his PhD, Joshua completed an MSc in Environmental Science at Trinity College Dublin, and a BSc in Earth Science at University College Cork. He has a range of experience in quaternary sedimentology and stratigraphy in deep marine, shelf and glacial environments.
The core aim of this project is to provide the first systematic analysis of the neglected Stone Age archaeology of the Middle Kalahari, central southern Africa, and its raw material source areas, in relation to the region's hydrological history. The central research question is: How did Late Quaternary hydrological changes affect human mobility and resource use, and hence the distribution of archaeological sites in the central southern African landscape? By combining our expertise and integrating a suite of archaeological, palaeoenvironmental and geochemical research methods, this will generate important insights into the archaeology of the interior of southern Africa, and provide an empirical contribution to wider debates within geoarchaeology and human evolution.
- Allin, J.R., Hunt, J.E., Clare, M.A. and Talling, P.J. (2017) Eustatic sea-level controls on the flushing of a shelf-incising submarine canyon. GSA Bulletin.
- Allin, J.R., Hunt, J.E., Talling, P.J., Clare, M.A., Pope, E. and Masson, D.G. (2016) Different frequencies and triggers of canyon filling and flushing events in Nazaré Canyon, offshore Portugal. Marine Geology, 371: 89-105.
- Pope, E.L., Talling, P.J., Hunt, J.E., Dowdeswell, J.A., Allin, J.R., Cartigny, M.J., Long, D., Mozzato, A., Stanford, J.D., Tappin, D.R. and Watts, M. (2016) Long-term record of Barents Sea Ice Sheet advance to the shelf edge from a 140,000 year record. Quaternary Science Reviews, 150: 55-66.
- Talling, P.J., Allin, J., Armitage, D.A., Arnott, R.W., Cartigny, M.J., Clare, M.A., Felletti, F., Covault, J.A., Girardclos, S., Hansen, E. and Hill, P.R. (2015) Key future directions for research on turbidity currents and their deposits. Journal of Sedimentary Research, 85(2): 153-169.