Visiting Researchers
 |
Institute |
Institute de Physique du Globe de Paris ( IPGP) |
Title |
Post-doctoral | |
Country |
France | |
Period of Stay |
2016/2/22 - 2016/12/20 | |
Research Theme |
The use of coral microatolls in the Ryukyus arc to document relative sea-level changes relative to the megathrust and the climate. | |
Host Researcher |
Kenji SATAKE |
"My research is
focused on paleoseismological studies in coastal areas. I mainly use corals as
paleogeodetic instruments. More specifically, coral microatolls are used as
natural tide gauges to reconstruct the relative sea-level changes over several
centuries. Their use allow to document vertical deformations related to
subduction processes as well as climatic sea-level changes at interannual and
secular scales. This research topic leads me to study the Lesser Antilles
subduction zone and the January 12 2010 Haiti earthquake during my PhD at IPGP
in Paris. In the Lesser Antilles, our study on coral microatolls notably
provided evidences of significant coupling on the megathrust interface, in
contradiction with short-term geodetic studies. The research conducted on coral
microatolls in Haiti brought original results on coral microatolls’ natural
variability in the Caribbean, and on their reliability for measuring very slow
relative sea-level changes.
My stay at ERI will
be dedicated to perform a first study on coral microatolls along the Ryukyus
trench - the work on other markers as notches, beachrock, reef platform will
complete the coral record - in the hope to gain informations on the subduction
process through several seismic cycles. That would help to a better
characterization of the coupling variability in time and space along the
Ryukyus trench."