Johnson Research Group
Half-Baked Seminar: Towards an annually-resolved reconstruction of Indo-Pacific hydrology over the past 2,000 years
We are delighted to announce the return of the Half-Baked Seminars. Mick Griffiths is going to start things off for us by presenting some of his work on speleothems from Laos and Flores and perhaps giving us a sneak peak at where he'll be heading this summer on fieldwork.
How do seasonal resolution geochemical variations preserved in speleothems from Laos reflect past Asian monsoon variability?
In order to most accurately identify the causes and mechanisms of climatic change, it is necessary for us to develop high-resolution paleoclimate records which tell us about past climate changes on seasonal, annual, and decadal timescales. Calcite speleothems are well suited for paleoclimate reconstruction because they are normally pure calcite, are well-preserved, can be precisely dated using Uranium-series methods, and contain multiple types of paleoclimate proxy data in their highly resolvable growth bands. In particular, measurements of δ18O along speleothem