Estelle Rose-Koga

Statut : Permanent, emploi : Chercheur
Fonction : estelle.rose-koga@cnrs-orléans.fr
Bâtiment : CNRS
Directrice de Recherches, CNRS

Email : estelle.rose-koga@cnrs-orleans.fr
Téléphone : 0238255093

Grand progamme : Magma & Déformation
RESEARCH TOPICS
I study the cycle of volatile elements in subduction zone settings to try to understand why and how volcanoes erupt the way they do. I use melt inclusions to get to the volatile compositions of the less degassed source of arc magmas, but also of mid-ocean ridge and hot spot magmas. I am an isotope geochemist by education and use stable isotopes and their fractionation to study magma degassing and magma mixing. I use volatile element diffusion in embayment to calculated magma ascent rates. All of my research themes involve in situ analysis which I perform by using SIMS, nanoSIMS, LA-ICPMS, and EMP.

ADMINISTRATIVE RESPONSABILITIES
Head of the Magma & Geodynamic Team at ISTO, 2023-
Head of the Geochemistry Team at LMV, 2020-2022
Member of the Scientific Committee of Labex CLERVOLC, 2020-2022
Member of the INSU-CNRS Scientific Committee, TelluS-SYSTER, 2018-2021
Treasurer of the European Association of Geochemistry, 2018-
Associate Editor in "Geochemistry" for the journal Frontiers, 2017-2020

ADVISED STUDENTS
PhD:
. Klaudia Cyrzan 2022- (co-adv. V. Zanon, University of Azores)
. Shashank Prabha Mohan 2021- (co-adv. K. Koga)
. Christy Haruel 2021- (co-adv. P. Bani, E. Médard)
. Guillaume Georgeais 2019-2023 (co-adv. Y. Moussallam, K. Koga, A. Harris)
. Masataka Kawaguchi 2018-2021 (co-adv. K.Koga & A.Yoshiasa, Univ. Kumamoto, JP)
. Diego Narvaez 2018-2021 (co-adv. P. Samaniego & K. Koga)
. Gabrielle Ménard 2010-2014 (co-adv. I. Vlastelic)
. Marion Le Voyer 2006-2009 (co-adv. P. Schiano)

Undergraduates: Manon Pouget 2022 ; Alexis Chapuis 2020-2021 ; Guillaume Georgeais 2018-2019 ; Sarah Lang 2017-2018 ; Antonin Bouillet 2016-2017 ; Diego Narvaez, 2015-2016 ; Ludovic Leduc 2011-2012 ; Marion Le Voyer, 2005-2006 ; Lucie Grousset (ENSG, Nancy), 2012.

MEMBER OF PhD COMMITTEE
2023. Kristijan Rajic, ISTO, Orléans – President
2022. Shengyu Tian, IPG, Paris – President
2022. Sarah Figowy – Sorbonne Université, Paris, France – Rapporteur
2021. Raimundo Brahm, Massey University, New Zealand – Rapporteur
2017. Mélina Manzini, University of Lausanne, Switzerland – Rapporteur
2016. Géraldine Zdanowicz, IPG Paris, France – Examiner
2012. Livia Colo', University of Florence, Italy – Examiner
2005. Emmanuel Lemarchand, Université P. Sabatier, Toulouse, France – Examiner

WORK EXPERIENCE
2022- present : Directrice de Recherches at CNRS, ISTO, Orléans, France
2014 : 6 months, Visiting Scholar, University of Toronto, Canada
2005- 2022 : Chargée de Recherches at CNRS, LMV Clermont-Ferrand, France
2002-2005 : Chargée de Recherches at CNRS, ENS Lyon, France
2000-2001 : Post-Doctorate at Okayama University at Misasa, Japan
1999-2000 : Post-Doctorate at Woods Hole Oceanographic Institution MA, USA

EDUCATION
2012 : Habilitation à Diriger des Recherches (HDR). Univ. B. Pascal. Clermont-Ferrand
1999 : Ph.D. in isotopic geochemistry at CRPG-CNRS, Nancy, France

5 MOST RECENT PUBLICATIONS (* = student)
Georgeais* G., Harris AJL., Moussallam Y., Koga KT., Rose-Koga EF. (2023) Real-time extraction of mass discharge rate and vent area for Strombolian to Plinian eruptions, Bull. Volc., in revision
Narvaez* D., Samaniego P., Koga K.T., Rose-Koga E.F., Hidalgo S., Ratzov G. (2023) Two types of slab components under Ecuadorian volcanoes supported by primitive olivine-hosted melt inclusion study, Lithos, 442-443.
Kawaguchi*, M., Koga K.T., Rose-Koga E.F., Shimizu K., Ushikubo T., Yoshiasa A. (2022) Sulfur isotope and trace element systematics in arc magmas: seeing through the degassing via a melt inclusion study of Kyushu Island volcanoes, Japan. Journal of Petrology 63, (7), egac061.
Bouvier A-S., Rose-Koga E.F., Nichols A.R.L., Le Lay C., (2022) Melt inclusion formation during olivine remobilization: Evidence from stable isotopes. Earth and Planetary Science Letters 592, 117638.
Bouvier A-S., Rose-Koga E.F., Chapuis* A. (2022) Deciphering degassing and source effects on Cl isotopes in melt inclusions: the role of amphibole in the magma source of Stromboli (Aeolian Island arc), Frontiers in Earth Science, doi: 10.3389/feart.2021.793259.