Tachikawa Kazuyo

My major research interests are Paleoceanography and paleoclimatology at millennial to orbital timescales for the last ten million years to better understand processes affecting climate variability. I use geochemical tools (isotopes and elemental composition) to reconstruct deep-water circulation, seawater surface temperature, redox state of sediments in relation to oceanic circulation and/or surface biological production, and detrital elements inputs to evaluate river and dust inputs. Studying the behaviour of these geochemical tools in the modern condition is also my research focus. I collaborate with climate modellers to examine processes behind proxy reconstructions.