*Postdoc and PhD student positions - The Hebrew University of Jerusalem,

*Job description*

Open positions for as a postdoctoral fellow and a PhD student at the Institute
of Earth Sciences in the Hebrew University of Jerusalem (Israel) is
available for highly-motivated applicants to work within the research
project ‘Speleothem paleoclimate: accounting for isotopic
disequilibrium’, funded
through an ERC grant to Prof. Hagit Affek.

Isotopic records in speleothems are increasingly used to determine climate
variability on land and for data-model comparisons. However, transferring
speleothem records into quantitative climate parameters suffers from a
major limitation: speleothem formation processes result in geochemical
disequilibrium and there is currently no way to correct for it in
paleoclimate data.

This research project will use a combination of Clumped Isotopes (∆47) and
Triple Isotopes (∆17O) to quantify disequilibrium in cave records. Clumped
Isotope thermometry is a novel geochemical tool to reconstruct past
temperatures. Carbonate Triple Isotopes is a new tool to identify sources
of moisture and is expected to be a sensitive indicator of disequilibrium.

In this ERC project, we will work through laboratory experiments and
analysis of natural cave materials, towards understanding speleothem
formation processes and their effect on the way in which speleothems record
climatic conditions.


We seek a highly motivated candidate with the following requirements:

·    Background in Earth Sciences, Climate Sciences, Physics, or Chemistry;

·    Laboratory experience in geochemistry, preferably in stable isotopes;
·    Experience in clumped isotopes or non-mass-dependent isotopic systems
would be beneficial;
·    Experience in carbonate geochemistry or other aspects of speleothems
would be beneficial.

For further information please contact Hagit Affek:
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*Hagit Affek| *Associate Professor

*Institute of Earth Sciences*
The Hebrew University of Jerusalem

Edmond J. Safra Campus
Phone: +972.2.6584654 | Fax +972.2.5662581
mail address: [log in to unmask]