Please use the drop down options in the Research tab to explore my major research themes.
[7] Katz, S.A., Bertacchi, A., Yarian, D.A., Wostbrock, J.A.G., (2026) "Carbonate triple oxygen and carbon isotope effects of chemical pretreatments on tooth enamel and eggshell." Chemical Geology (10.1016/j.chemgeo.2026.123551).
Associated Data: https://doi.org/10.60600/YU/YBXTSZ
Code: https://doi.org/10.5281/zenodo.17782862
[6] Katz, S.A., Levin, N.E., Abbott, M.B., Rodbell, D.T., Passey, B.H., Katz, S.A. (2025) "Orbital forcing drives both the South American monsoon and local water balance in the central Andes during interglacials." Geophysical Research Letters, 52 (10.1029/2025GL116249).
Associated Data: All data: https://doi.org/10.7302/wzbz-v060
Clumped and triple oxygen isotope data : https://doi.org/10.60520/IEDA/113718
[5] Katz, S.A., Levin, N.E, Abbott, M.B, Rodbell, D.T., Passey, B.H., DeLuca, N.M., Larsen, D.J., Woods, A. (2024) “Holocene temperature and water stress in the Peruvian Andes: insights from lake carbonate clumped and triple oxygen isotopes.” Paleoceanography and Paleoclimatology, 39 (10.1029/2023PA004827).
Associated Data: All data: https://doi.org/10.7302/ct1w-sm35
Clumped and triple oxygen isotope data: https://doi.org/10.60520/IEDA/113158
Code: https://doi.org/10.5281/zenodo.10869051
[4] Katz, S.A. (2024) “Andean interglacial climate and hydrology over the last 650,000 years,” PhD Thesis, University of Michigan (https://dx.doi.org/10.7302/22975).
[3] Katz, S.A., Levin, N.E, Rodbell, D.T., Gillikin D.P., Aron, P.G., Passey, B.H., Tapia, P.M., Serrepe, A.R., and Abbott, M.B. (2023) “Detecting hydrologic distinctions among Andean lakes using clumped and triple oxygen isotopes” Earth and Planetary Science Letters, Vol 602 (doi.org/10.1016/j.epsl.2022.117927).
[2] Rodbell, D.T., Hatfield, R.G., Abbott, M.B., Chen, C.Y., Woods, A., Stoner, J.S., McGee, D., Tapia, P.M., Bush, M., Valero-Garcés, B.L., Lehmann, S.B., Mark, S.Z., Weidhaas, N.C., Hillman, A.L., Larsen, D.J., Delgado, G., Katz, S.A., Solada, K.E., Morey, A.E., Finkenbinder, M., Valencia, B., Rozas-Davila, A., Wattrus, N., Coleman, S.M., Bustamante, M.G., Kück, J., and Pierdominici, S. (2022) “700,000 years of tropical Andean glaciation,” Nature, Vol 607 (doi.org/10.1038/s41586-022-04873-0). My contribution to this work was primarily in the form of performing sedimentological and isotopic analyses.
[1] Bernasconi, S., Daëron, M., Bergmann, K.D., Bonifacie, M., Meckler, A.N., Affek, H.P., Anderson, N., Bajnai, D., Barkan, E., Beverly, E., Blamart, D., Burgener, L., Calmels, D., Chaduteau, C., Clog, M., Davidheiser-Kroll, B., Davies, A., Dux, F., Eiler, J., Elliott, B., Fetrow, A.C., Fiebig, J., Goldberg, S., Hermoso, M., Huntington, K.W., Hyland, E., Ingalls, M., Jaggi, M., John, C.M., Jost, A.B., Katz, S., Kelson, J., Kluge, T., Kocken, I.J., Laskar, A., Leutert, T.J., Liang, D., Lucarelli, J., Mackey, T.J., Mangenot, X., Meinicke, N., Modestou, S.E., Müller, I.A., Murray, S., Neary, A., Packard, N., Passey, B.H., Pelletier, E., Petersen, S., Piasecki, A., Schauer, A., Snell, K.E., Swart, P.K., Tripati, A., Upadhyay, D., Vennemann, T., Winkelstern, I., Yarian, D., Yoshida, N., Zhang, N., and Ziegler, M. (2021) “InterCarb: A community effort to improve inter-laboratory standardization of the carbonate clumped isotope thermometer using carbonate standards,” Geochemistry, Geophysics, Geosystems, Vol 2, Issue 5 (doi.org/10.1029/2020GC009588). My contribution to this work was primarily in the form of performing isotopic analyses.
UT Austin Jackson School of Geosciences DeFord Lecture Series (March 2026) Andean climate and hydrology over the last 650,000 years: Insights from Lake Junín, Peru
American Geophysical Union, AGU (December 2024) Orbital-pacing of South American Monsoon Strength and Regional Water Balance: New Evidence from Triple Oxygen Isotopes. Invited contribution for GC044 - Climate change, variability, and impacts in South America.
Colgate University, (September 2023) Andean interglacial climate and hydrology over the last 650,000 years. Invited seminar talk for undergraduate audience.
Great Lakes Coordinating Committee, Hydrology Subcommittee, (October 2021) Project Updates: Investigating Uncertainty Associated with the Great Lakes Water Balance. USACE-funded project update to the Hydrology Subcommittee.
Union College, (October 2020) Reconstructing precipitation δ18O from lacustrine carbonates using δ18O, Δ47, and Δ'17O: a modern case study from Junín, Peru with implications for paleoclimate. Invited seminar talk for undergraduate audience.
(2021-present, only; only first-author and research mentor abstracts are shown; see CV for complete list; § = undergraduate student mentee)
Geological Society of America (GSA) (anticipated October)
Katz, S.A., Koch, P.L, Yarian, D.A., Wostbrock, J.A.G., "Water Use Niche Space of North America’s Late Quaternary Megafauna from Enamel Triple Oxygen Isotopes." [Oral presentation]
1st New England Paleoclimate Day (anticipated August)
Katz, S.A., Koch, P.L, Yarian, D.A., Wostbrock, J.A.G., "Did hydroclimate change lead to the extinction of North America's Late Quaternary megafauna?" [Oral presentation]
Goldschmidt (July)
Katz, S.A., Koch, P.L, Yarian, D.A., Wostbrock, J.A.G., "Joining Tooth Enamel Triple Oxygen Isotope Data and Body Water Modeling to Infer Hydroclimate Change." [Poster presentation]
Northeast Section Meeting of the Geological Society of America (March)
Katz, S.A., Koch, P.L, Yarian, D.A., Wostbrock, J.A.G. "Evidence of Increasing Aridification in the Southern United States since the Last Glacial: Leveraging Advances in Tooth Enamel Triple Oxygen Isotopes and Revisiting Paleontological and Archaeological Collections" [Poster presentation]
Northeast Section Meeting of the Geological Society of America (March)
Katz, S.A., Levin, N.E., Passey, B.H., Rodbell, D.T., Abbott, M.B., Wostbrock, J.A.G., Smith, B., Rao, A. “Detrital Contributions to Lake Junín (Peru) During Glacial Periods Revealed by Clumped Isotopes: Application of a Two-Point Δ47 Mixing Model to Mixed-Source Carbonate and Implications for Isotope-Based Paleoclimate Reconstructions” [Oral presentation]
Geological Society of America (GSA) (October)
Katz, S.A., Bertacchi, A., Yarian, D., Wostbrock, J.A.G*."Triple Oxygen and Carbon Isotope Effects of Chemical Pretreatments on Biominerals" [Poster presentation] Link to abstract
*presenting author
American Geophysical Union (AGU) (December)
Katz, S.A., Levin, N.E., Rodbell, D.T., Abbott, M.B., Passey, B.H., Katz, S.A."Orbital-pacing of South American Monsoon Strength and Regional Water Balance: New Evidence from Triple Oxygen Isotopes" [Invited presentation]
International Clumped Isotope Workshop, ICIW9 (August)
Katz, S.A., Levin, N.E., Passey, B.H., Rodbell, D.T., Abbott, M.B., Smith, G., Rao, A. “Application of a Two-Point D47 Mixing Model to Mixed-Source Lacustrine Carbonate and Implications for Isotope-Based Paleoclimate Reconstructions.” [Oral presentation]
Goldschmidt (August)
Katz, S.A., Levin, N.E., Abbott, M.B., Rodbell, D.T., Passey, B.H., Katz, S.A. “Triple oxygen isotopes reveal large, orbitally-paced swings in South American monsoon strength and regional water balance.” Link to abstract [Oral presentation]
Geological Society of America (GSA) (October)
Katz, S.A., Levin, N.E., Abbott, M.B., Rodbell, D.T., Passey, B.H., “Large swings in tropical water balance during a ‘weak’ interglacial (MIS 15) suggest a link to precession-induced monsoon variability.” [Oral presentation]
Michigan Geophysical Union (MGU) Research Symposium, Ann Arbor, MI (April)
Katz, S.A., Levin, N.E., Abbott, M.B., Rodbell, D.T., Passey, B.H., “Andean interglacial climate during MIS‑15 (621–563 ka).” (doi.org/10.7302/7054 ) [Poster presentation]
Michigan Geophysical Union (MGU) Research Symposium, Ann Arbor, MI (April)
Katz, S.A., Levin, N.E., DeLuca, N.M., Passey, B.H., Rodbell, D.T., Abbott, M.B “Temperature and water budget records from Holocene lake carbonates in the Peruvian Andes (Peru).” (doi.org/10.7302/4224) [Oral presentation]
American Geophysical Union (AGU), (December)
Katz, S.A., Levin, N.E., DeLuca, N.M., Passey, B.H., Rodbell, D.T., Abbott, M.B “Holocene temperature and water budget records from the tropical-latitude Andes (11 °S) using clumped isotope (47) and triple oxygen isotope (17O) measurements of lake carbonates from Lake Junín and Laguna Pumacocha, Peru.” GC55C-0430 Link
Michigan Geophysical Union (MGU) Research Symposium, Virtual Conference (April)
Katz, S.A., Passey, B.H., and Levin, N.E., “A simple numerical model to predict the effect of moisture recycling on the triple oxygen isotope (17O) composition of downwind precipitation.” MGU Annual Meeting 2021. (doi.org/10.7302/879)
Michigan Geophysical Union (MGU) Research Symposium, Virtual Conference (April)
§ Andrews, K.S., Katz, S.A., Aron, P.G., Levin, N.E., “Spatial and temporal trends in stable oxygen isotopes of eggshells and waters” MGU Annual Meeting 2021. (doi.org/10.7302/879)
https://github.com/sarahakatz