Yu-Te Alan Hsieh

Yu-Te Alan Hsieh

Researcher in Isotope Geochemistry

My research interests focus on the quantification of the Earth’s surface dynamic processes using trace element and isotope geochemistry. This ranges from exploring the roles of trace elements and biogeochemical cycles in the ocean to understanding different oceanic processes and climate changes in the past, present, and future.

My current research applies the tools of isotope geochemistry to a variety of marine chemical and paleoceanographic questions, with a particular focus on the U-series geochemistry and non-traditional stable isotopes. For example, I am interested in the applications of using U-series isotopes (e.g. U, Th and Ra isotopes) as tracers to study ocean mixing, trace element and nutrient cycling in the ocean. I am also interested in the new developments of using non-traditional stable isotopes (e.g. Ba isotopes) as proxies to study ocean productivity and chemical weathering in the ocean.

My research also involves the development of new analytical methods for measuring a wide range of novel isotope systems by MC-ICP-MS and TIMS.

  • Hsieh, Y.-T., Geibert, W., Woodward, E.M.S., Wyatt, N.J., Lohan, M.C., Achterberg, E.P., Henderson, G.M. (2021) Radium-228-derived ocean mixing and trace element inputs in the South Atlantic. Biogeosciences. in press. doi.org/10.5194/bg-2020.377
  • Hsieh, Y.-T., Bridgestock, L., Scheuermann, P.P., Seyfried Jr., W.E., Henderson, G.M. (2021) Barium isotopes in mid-ocean ridge hydrothermal vent fluids: a source of isotopically heavy Ba to the ocean. Geochim. Cosmochim. Acta 292. 348-363. doi.org/10.1016/j.gca.2020.09.037
  • Standish, C.D., Merkel, S.W., Hsieh, Y.-T., Kershaw, J. (2021) Simultaneous lead isotope ratio and gold-lead-bismuth concentration analysis of silver by laser ablation MC-ICP-MS. Journal of Archaeological Science 125. 105299. doi.org/10.1016/j.jas.2020.105299
  • Dickson, A.J., Hsieh, Y.-T., Bryan, A. (2020) The rhenium isotope composition of Atlantic Ocean seawater. Geochim. Cosmochim. Acta 287. 221-228. doi.org/10.1016/j.gca.2020.02.020
  • Bridgestock, L., Hsieh, Y.-T.,  Porcelli, D., Henderson, G.M. (2019) Increased export production during recovery from the Paleocene-Eocene thermal maximum constrained by sedimentary Ba isotopes. Earth Planet Sci. Lett. 510. 53-63. doi.org/10.1016/j.epsl.2018.12.036
  • Hemsing, F., Hsieh, Y.-T.,  Bridgestock, L., Spooner, P.T., Robinson, L.F., Frank, N., Henderson, G.M. (2018) Barium isotopes in cold-water corals. Earth Planet Sci. Lett. 491. 183-192.  doi.org/10.1016/j.epsl.2018.03.040
  • Bridgestock, L., Hsieh, Y.-T., Porcelli, D., Homoky, W.B., Bryan, A., Henderson, G.M. (2018) Controls on the barium isotope compositions of marine sediments. Earth Planet Sci. Lett. 481. 101-110. doi:10.1016/j.epsl.2017.10.019
  • Hsieh, Y.-T., Henderson, G.M. (2017) Barium stable isotopes in the global ocean: Tracer of Ba inputs and utilization. Earth Planet Sci. Lett. 473. 269-278. doi:10.1016/j.epsl.2017.06.024
  • Hooker, J.N., Cartwright, J., Stephenson, B., Silver, C., Dickson, A.J., Hsieh, Y.-T. (2017) Fluid evolution in fracturing black shales, Appalachian Basin. AAPG Bulletin doi:10.1306/10031616030
  • Steponaitis, E., Andrews, A., McGee, D., Quade, J., Broecker, W.S., Hsieh, Y.-T., Shuman, B., Burns, S.J., Cheng, H. (2015) Mid-Holocene drying of the U.S. Great Basin recorded in Nevada speleothems. Quaternary Science Reviews 127. 174-185. doi:10.1016/j.quascirev.2015.04.011
  • Geibert, W., Rodellas, V., Annett, A., van Beek, P., Garcia-Orellana, J., Hsieh, Y.-T., Masque, P. (2013) 226Ra determination via the rate of 222Rn ingrowth with the Radium Delayed Coincidence Counter (RaDeCC). Limnology and Oceanography: Method 11. 594-603. doi:10.4319/lom.2013.11.594
  • Hsieh, Y.-T, Geibert,W., van-Beek, P., Stahl, H., Aleynik, D., and Henderson, G.M. (2013) Using the radium quartet (228Ra, 226Ra, 224Ra, and 223Ra) to estimate water mixing and radium inputs in Loch Etive, Scotland. Limnology and Oceanography 58. 1089-1102. doi:10.4319/lo.2013.58.3.1089
  • Shen, C.-C., Wu, C.-C., Cheng, H., Edwards, R. L., Hsieh, Y.-T., Gallet, S., Chang, C.-C., Li, T.-Y., Lam, D.D., Kano, A., Hori, M. and Spötl, C. (2012) High-precision and high-resolution carbonate 230Th dating by MC-ICP-MS with SEM protocols. Geochimica et Cosmochimica Acta 99. 71-86. doi:10.1016/j.gca.2012.09.018
  • Hsieh, Y.-T., Henderson, G.M., and Thomas, A.L. (2011) Combining seawater 232Th and 230Th concentrations to determine dust fluxes to the sufrace ocean. Earth Planet Sci. Lett., 312. 280-290. doi:10.1016/j.epsl.2011.10.022
  • Hsieh, Y.-T. and Henderson, G.M. (2011) Precise measurement of 228Ra/226Ra ratios and Ra concentrations in seawater samples by multi-collector ICP mass spectrometry. J. Anal. At. Spectrom. 26. 1338-1346. doi:10.1039/C1JA10013K
  • Shen, C.-C., Li, K.-S., Sieh, K., Natawidjaja, D., Cheng, H., Wang, X., Edwards, R.L., Lam, D.D., Hsieh, Y.-T., Fan, T.-Y., Meltzner, A.J., Taylor, F.W., Quinn, T.M., Chiang, H.-W., and Kilbourne, K.H. (2008) Variation of initial 230Th/232Th and limits of high precision U-Th dating of shallow-water corals. Geochimica et Cosmochimica Acta 72. 4201-4223. doi:10.1016/j.gca.2008.06.011