Sevi Modestou holding a ship's life preserver around her face, which reads 'Joides Resolution Limassol'

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Sevi Modestou

Dr.

 https://orcid.org/0000-0002-9820-5551
  • 610
    Citations

Personal profile

Research interests

I am an isotope geochemist and paleoceanographer using various isotopic tools to understand Earth's past climate. In particular, I work with 'clumped isotopes' to understand past temperature change on Earth (as well as within other planetary bodies). I also utilise stable, radiogenic and cosmogenic isotopes in the context of paleoclimatology and paleoceanography, and the evolution of the earth.

Further Information

I manage the NICEST Lab at Northumbria University. We are interested in using isotopic and elemental concentration based tools for characterization of modern environmental conditions, and for reconstructing palaeoclimate from periods varying from the Holocene to the Precambrian. We use several different materials and archives to do this: fossils, speleothems, carbonate minerals, soils and sediments, and water. 

Specifically, we measure the Δ47, δ13C and δ18O composition of carbonate archives, δD and δ18O of water, and the nitrogen and carbon content and δ13C and δ15N of organic materials, including soils and sediments.

Research Group keywords

  • Environmental Monitoring and Reconstruction

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  • A six-million-year speleothem derived clumped isotope temperature record of continental Eurasia

    Umbo, S., Modestou, S., Opel, T., Lechleitner, F., Vaks, A., Golan, T., Mason, A., Margerum, J., Kwiecien, O., Osintsev, A. & Breitenbach, S., 15 Mar 2025. 2 p.

    Research output: Contribution to conference › Abstract › peer-review

    Open Access
    File

  • Expedition 395 methods

    Parnell-Turner, R. E., Briais, A., LeVay, L. J., Cui, Y., Di Chiara, A., Dodd, J. P., Jones, T. D., Dwyer, D., Eason, D. E., Friedman, S. A., Hemming, S. R., Hochmuth, K., Ibrahim, H., Jasper, C., Karatsolis, B. T., Lee, S., LeBlanc, D. E., Lindsay, M. R., McNamara, D. D. & Modestou, S. E. & 13 others, Murton, B., O'Connell, S., Pasquet, G. T., Pearson, P. N., Qian, S.-P., Rosenthal, Y., Satolli, S., Sinnesael, M., Suzuki, T., Doss, T. T., White, N. J., Wu, T. & Yang Yang, A., 21 Jan 2025, Proceedings of the International Ocean Discovery Program. Texas, USA: International Ocean Discovery Program, Vol. 395. p. 1-72 72 p. (International Ocean Discovery Program: Preliminary Reports).

    Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

    Open Access
    File
    6 Citations (Scopus)
    1 Downloads (Pure)

  • Expedition 395 summary

    Parnell-Turner, R. E., Briais, A., LeVay, L. J., Cui, Y., Di Chiara, A., Dodd, J. P., Jones, T. D., Dwyer, D., Eason, D. E., Friedman, S. A., Hemming, S. R., Hochmuth, K., Ibrahim, H., Jasper, C., Karatsolis, B. T., Lee, S., LeBlanc, D. E., Lindsay, M. R., McNamara, D. D. & Modestou, S. E. & 13 others, Murton, B., Oconnell, S., Pasquet, G. T., Pearson, P. N., Qian, S. P., Rosenthal, Y., Satolli, S., Sinnesael, M., Suzuki, T., Thulasi Doss, T., White, N. J., Wu, T. & Yang Yang, A., 21 Jan 2025, Proceedings of the International Ocean Discovery Program. Texas, USA: International Ocean Discovery Program, Vol. 395. 49 p. (International Ocean Discovery Program: Preliminary Reports).

    Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

    Open Access
    File
    2 Citations (Scopus)
    4 Downloads (Pure)

  • Geomagnetic Excursions Recorded in North Atlantic IODP Expedition 395C Sites U1555 and U1563

    Di Chiara, A., Satolli, S., Friedman, S. A., Dwyer, D., Acton, G. D., Jones, T. D., Karatsolis, B. T., Pearson, P. N., Suzuki, T., Modestou, S., O'Connell, S., Ibrahim, H., Jasper, C. E., LeBlanc, D. E., Lee‐Takeda, S., Thulasi, T., Eason, D. E., Sinnesael, M., Hochmuth, K. & Briais, A. & 3 others, Parnell‐Turner, R., LeVay, L. J. & Expedition 395C/395 Science Party, 18 Jun 2025, In: Geochemistry, Geophysics, Geosystems. 26, 6, 22 p., e2025GC012220.

    Research output: Contribution to journal › Article › peer-review

    Open Access
    File
    19 Downloads (Pure)

  • IODP Expedition 395 Site U1602 X-ray fluorescence (XRF)

    Parnell-Turner, R., Briais, A., LeVay, L., Morris, M., Cui, Y., Di Chiara, A., Dodd, J. P., Jones, T. D., Dwyer, D., Eason, D., Friedman, S., Hemming, S., Hochmuth, K., Ibrahim, H. E., Jasper, C., Karatsolis, B. T., Lee, S., LeBlanc, D., Lindsay, M. & McNamara, D. & 18 others, Modestou, S., Murton, B., O'Connell, S., Pasquet, G., Pearson, P., Qian, S.-P., Rosenthal, Y., Satolli, S., Sinnesael, M., Suzuki, T., Doss, T. T., White, N. J., Wu, T., Yang, A., Ferrante, B., Korat, S., Mendez, M. & Sperling, C., 21 Mar 2025

    Research output: Non-textual form › Data set/Database

    Open Access
View all 29 research outputs