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UCL Home  /  Geography  /  People  /  Research Students  /  Joanna Tindall

Joanna Tindall

Contact

Joanna Tindall

Department of Geography, University College London, Pearson Building, Gower Street, London, WC1E 6BT

Email: joanna.tindall.15@ucl.ac.uk

Twitter: @joannaT1995

London NERC DTP: https://london-nerc-dtp.org/profile/TindallJ/

LinkedIn: https://www.linkedin.com/in/joanna-tindall-85415410b/

Supervisors:

Prof. Jonathan Holmes (University College London)

Prof. Ian Candy (Royal Holloway, University of London)

Prof. Simon Blockley (Royal Holloway, University of London)

Dr.  Louise Sime (British Antarctic Survey)

Collaborators: Prof. David Sear, University of Southampton

Funding:

London NERC DTP

NIGLFSC (2018) - Oxygen isotope analyses on ostracod shells.

NIGLFSC (2019) - Oxygen isotope analyses on ostracod shells.

UCL Widening Participation and Access Grant for Summer Challenge 2019.

Current Research

Title: Lacustrine oxygen isotopes as tracers of past climate change in NW Europe.

Abstract: The Holocene (last ~11,700 years BP) has experienced multiple abrupt climatic events. However, their often subtle expression in the palaeo-record results in many proxies lacking the sensitivity to identify them. The use of oxygen isotopes to investigate palaeotemperature of major abrupt events in cold stages, particularly ice core records, is well-established. In contrast, their use on Holocene lake sediments is limited, despite their potential to also allow for palaeoprecipitation and palaeoatmospheric reconstruction of these subtler abrupt climatic events when high-resolution sampling Is aligned with a good chronology. These reconstructions are made possible by the predictable relationship between water isotope ratio and air temperature. Unusually, large shifts may be attributed to other forcing factors such as precipitation; the δ18O composition of precipitation being strongly controlled by atmospheric processes. This project uses this theory to build on the work of Holmes et al. (2010) to investigate the palaeoclimatic record from lacustrine sediments at various Holocene time slices and the comparison with modern lake water isotope systematics and outputs from an isotope-enabled general circulation model (GCM) outputs.

Impact: The research will further our understanding of climate evolution during the Holocene and mechanisms that drive abrupt climatic events. This will contribute to our ability to model, predict and prepare for potential events in the light of modern climate change in NW Europe. The comparison with archaeological evidence where appropriate may indicate societal response to change. Finally, the development of tephrochronologies at the selected field sites have the potential to a) identify tephra at some of the most southernly site in Britain to date, b) identify new Holocene tephras, c) demonstrate that tephra is a viable chronological alternative in late Holocene sites which can circumvent existing issues associated with radiocarbon, 210Pb and SCP dating methodologies which are presently widely used.

Objectives:

1)      Produce oxygen isotope records for four lacustrine sites across the British Isles, at different time slices, from ostracod shells.

2)      Produce chronologies for each site, primarily using tephra, but supported by radiocarbon, 210Pb, SCPs and historical records where appropriate.

3)      Identify abrupt climatic events through shifts in the δ18O record and use this to infer palaeotemperature and palaeoprecipitation change.

4)      Monitor modern lake δ18O composition and temperature where possible to compare to proxy evidence.

5)      Utilise the literature to understand archaeological changes in the sites’ locality at the time of abrupt climatic changes are observed to develop an understanding of societal response.

6)      Use the isotope-enabled HadCM3 GCM and the generated palaeoclimatic data to model potential driving factors of the abrupt climatic events and place change in a NW European context.

Biography

Academic Qualifications:

2017 – present: University College London

PhD Geography: ‘Lacustrine oxygen-isotopes as tracers of past climate change in NW Europe’.

2016-2017: Royal Holloway, University of London.

MSc Quaternary Science (Distinction)

Dissertation: ‘Reconstructing North African Monsoon Variability in the Last ~150ka through the use and experimentation of Optical Stimulated Luminescence (OSL) dating from marine core ODP658B’.

2013-2016: Royal Holloway, University of London.

BSc (Hons) Physical Geography (First Class Honours).

Dissertation: ‘Is Sutton Fen natural? Using palaeoecological methods to inform future management’.

Awards:

2016: Wang Jing Tai Prize from Department of Geography, Royal Holloway, University of London for the best undergraduate dissertation in Quaternary Science.

2016: Nominated for the British Society of Geomorphology Marjorie Sweeting dissertation prize.

Academic Membership:

Quaternary Research Association

The Micropalaeontology Society

The Geological Association

Postgraduate Fellow at the Royal Geographical Society (IBG).

Other Responsibilities:

2018 – present: Secretary for the Ostracod Working Group with The Micropaleontology Society

2017 – present: Cohort 4 of the London NERC DTP Representative.

2018 – present: Academic Representative for Physical Geography PhD students in the Geography Department at UCL.

2019 - present: Postgraduate Lab User Representative.

2019: DTP Conference Organisation Committee

Teaching:

2018 – present: Tutorial Fellow at Royal Holloway, University of London.

Delivering small group tutorials with the first-year undergraduates to support their Physical Geography modules. The role involves preparing and delivering material and setting and marking the associated course essays. I also deliver the academic skills tutorials related to reading and writing at university.

2018 – present: Postgraduate Teaching Assistant at University College London.

Assisting staff with delivering content related to the following courses:

GEOG0008: Environmental Change

GEOG0016: The Practice of Geography

GEOG0021: Reconstructing Past Environments

GEOGG122: Biological Indicators of Environmental Change

Publications

Conference Oral Presentations:

Quaternary Research Association Postgraduate Symposium 2017 – presented work from my MSc thesis.

Conference Poster Presentations:

Quaternary Research Association Postgraduate Symposium 2016 – PhD project outline.

A Changing Planet, DTP Conference – PhD project outline.

Outreach

2016 – present: Learning Volunteer at the Natural History Museum, London.

Regularly volunteer at the museum where we deliver and engage visitors with specimens across the whole scope of Natural History from creepy crawlies to mammals and minerals to fossils.

2013 – 2018: Geography Ambassador with the Royal Geographical Society (IBG).

Promote the uptake and study of geography at GCSE, A Level and University by delivering sessions both in schools and at the Society in London.