Menu

Javascript is not activated in your browser. This website needs javascript activated to work properly.
You are here

Nadine B. Quintana Krupinski

My research focuses on the study and reconstruction of marine and lacustrine Quaternary climates, primarily through the application of foraminiferal geochemistry (trace element and stable isotope) and other micropaleontology and geochemistry techniques. I am particularly interested in using indicators (proxies) for climate response such as temperature and seawater carbonate chemistry to study the effect of climatic forcings on marine systems and the role of oceans in the climate system. I also work to develop and improve the proxy tools we use to reconstruct past climate using cutting-edge techniques, including synchrotron light methods and LA-ICP-MS.

Modern anthropogenic CO2 release causes ocean acidification, and therefore we urgently need to understand how oceans in the past have responded to changing CO2 concentrations, and the range of past natural carbonate system variability and ecosystem response in different areas. My PhD work focused particularly on improving and applying a proxy for past seawater carbonate chemistry (the planktic foraminiferal B/Ca proxy). In this work, I generated new empirical coretop-based calibrations of the planktic foraminiferal B/Ca proxy in the Pacific Ocean. I used these calibrations to reconstruct changes in surface water carbonate chemistry and temperature from the most recent deglaciation to present in the near-coastal northeast Pacific (a southern California upwelling-influenced area). Another portion of my PhD studied the relative roles of climate and human activity in changes in fire activity in northern Israel using geochemical and microscopy techniques.

In my current work, I am expanding and applying trace elemental and stable isotope proxies for past seawater conditions (oxygenation, temperature, salinity, carbonate chemistry) in benthic foraminifera from the Baltic Sea region to reconstruct conditions over the past glacial-interglacial cycle. This region has experienced dramatic environmental changes linked to global and regional climate cycles and serves as a valuable archive for northern European climate, but quantitative reconstruction of seawater conditions has been limited by a lack of appropriate proxies for marginal marine environments. My work studies links between the Scandinavian Ice Sheet and northern European and North Atlantic climate during the past glacial cycle using new cores from IODP/ECORD Expedition 347, and refines trace element proxy calibrations for modern Baltic foraminifera. In addition, I use synchrotron and other analyses to improve our understanding of how trace elements are incorporated into CaCO3 during biomineralization, and how this affects the ability of different trace elements to be used as proxies for past environmental conditions such as seawater oxygenation.

Our initial report from IODP Expedition 347 (Baltic Sea Paleoenvironment, 2013-2014) can be accessed here: http://publications.iodp.org/proceedings/347/347toc.htm

Publication list from Google scholar

Publications

Retrieved from Lund University's publications database

Latest
All

Publications

Retrieved from Lund University's publications database

Publications

Retrieved from Lund University's publications database

Page Manager:
NQK_DISCO_cruise
E-mail: nadine_b [dot] quintana_krupinski [at] geol [dot] lu [dot] se

Postdoctoral fellow

Quaternary Sciences

+46 46 222 78 05

440

Sölvegatan 12, lund

16