Todai Forum
October 18th-19th, 2011

New Horizons in Earth Sciences:
Imaging and monitoring active subduction zones and volcanoes

Institut de physique du globe de Paris - Earthquake Research Institute

The Todai Forum is an international manifestation to promote the research and the education activities of the University of Tokyo abroad, to foster student and young researcher exchange, and research collaboration. The University of Tokyo, also known as Todai, is a leading global research university in Japan.

This year, the Todai Forum is organized, October 17th-21st, in Paris and Lyon with a common theme: “The Frontiers of Knowledge”. Two open Earth Sciences workshops, coordinated by CNRS-INSU, are organized within the Todai Forum:

- “New Horizons in Earth Sciences: imaging and monitoring active subduction zones and volcanoes”, October 18th-19th, in Paris, between the Earthquake Research Institute (ERI) and the Institut de Physique du Globe de Paris (IPGP).

- “New Horizons in Earth Sciences: deep earth geodynamics”, October 20th-21st, in Lyon, between the Earthquake Research Institute (ERI) and the Laboratoire de Géologie of the Ecole Normale Supérieure de Lyon.

The ERI/IPGP workshop is built upon a long time active collaboration. This workshop is especially open to students, PhD students and PostDocs, and will provide a unique opportunity for them to engage scientific discussions with researchers and students of ERI at the University of Tokyo, and eventually foster collaboration and projects.

Paris workshop program :

• Monday, October 17: Collège de France
(session on Tohoku earthquake 16:45 -­ 17:45
Barbara Romanowicz, Kenji Satake, Jean-Pierre Vilotte)

• Tuesday, October 18: Day 1 at IPGP

Session 1: Volcanoes
8:30 - 15:00

• 8:30 -­ 9:00 Reception
• 9:00 - 9:20 Introduction and welcome talks (ERI & IPGP)
• 9:20 - 9:40 Minoru TAKEO: Magma plumbing system beneath Mt. Asama volcano and it's magma chamber
• 9:20 - 9:40 Edouard KAMINSKI: Dynamics of volcanic plumes above basaltic eruptions
• 10:00 - 10:20 Yosuke AOKI: Monitoring Piton de la Fournaise, La Reunion island, with ambient noise
• 10:20 - 10:40 Florent BRENGUIER: Monitoring the Earth’s Interiors using Ambient Seismic Noise
• 10:40 - 11:00 Coffee Break
• 11:00 - 11:20 Mie ICHIHARA and John LYONS: Laboratory modeling for generation of harmonic tremor in the ground and in the air
• 11:30 - 11:50 François BEAUDUCEL: Monitoring active volcanoes using 3-D modeling of ground deformations
• 11:50 - 12:10 Benoit TAISNE: Real time magma transport imaging and earthquake localization using seismic amplitude ratio analysis
• 12:10 - 12:30 Shingo WATADA: Acoustic Resonant Oscillations Between the Atmosphere and the Solid Earth During the 1991 Mt. Pinatubo Eruption
• 12:30 - 12:50 Giovanni OCCHIPINTI: From Sumatra 2004 to Tohoku-­‐Oki 2011: what we learn about tsunami detection by ionospheric sounding
• 12:50 - 14:00 Lunch
• 14:00 -­ 15:00 Poster session: short introduction (Poster will be hanged up during the whole workshop)
• 13:00 -­ 15:00 Meeting of Directors ERI-­‐IPGP + Organizing committee (in parallel)

Session 2: Tohoku earthquake and active Subduction zones
15:00 - 18:30

• 15:00 -­ 15:20 Kenji SATAKE: Variable recurrence of great earthquakes and tsunamis in subduction zones
• 15:20 -­ 15:40 Philippe LOGNONNE: Atmospheric/ionospheric coupling of slow and fast seismic rupturesof Tohoku-­‐Oki
• 15:40 -­ 16:00 Hiroe MIYAKE: Frequency-­‐dependent source processes for the 2011 Tohoku earthquake
• 16:00 -­ 16:20 Claudio SATRIANO: Source imaging of the great Tohoku earthquake
• 16:20 -­ 16:40 Teruyuki KATO: Crustal deformation and its modeling due to the 2011 Tohoku earthquake based on GPS observations
• 16:40 -­ 17:10 Tea Break
• 17:10 -­ 17:30 Anne SOCQUET, Rolando Armijo, Robin Lacassin and Christophe Vigny: Rupture of megathrust earthquakes from geodetic and tectonic study of Maule earthquake
• 17:30 -­ 17:50 Pascal BERNARD and Jean-­‐Pierre VILOTTE: Lessons from the Tohoku earthquake in Japan and the Maule and Tocopilla earthquakes in Chile
• 17:50 -­ 18:10 Hitoshi KAWAKATSU: Seismic imaging of Japanese subduction zone
• 18:10 -­ 18:30 Mireille LAIGLE and Alfred HIRN: New images of seismic activity and structure of the Lesser Antilles subduction: similarities with he east Honshu context and the Tohoku megathrust earthquake

• Wednesday, October 19: Day 2 at IPGP

Session 3: Subduction zones
9:00 - 12:40

• 9:00 - 9:20 Takashi IIDAKA: Seismic structure at the subduction zone in southwestern Japan
• 9:20 - 9:40 Satish SINGH: Tsunamigenic or frontal thrusting earthquakes in Sumatra and Japan?
• 9:40 - 10:00 Kimihiro MOCHIZUKI: Crustal heterogeneity around fault segment boundaries of large subduction-­‐zone earthquakes
• 10:00 - 10:20 Marie-­‐Paul BOUIN and the French Lesser Antilles Observatories: Seismicity and deformation processes in the Lesser Antilles subduction zone
• 10:20 - 10:40 Coffee Break
• 10:40 - 11:00 Kazushige OBARA: Monitoring of slow earthquakes in the Nankai subduction zone
• 11:00 - 11:20 Nikolai SHAPIRO: Studies of non-­‐volcanic tremors in the Mexican subduction zone
• 11:20 - 11:40 Kiwamu NISHIDA: Very low frequency tremors beneath Shonai plain revealed by Hi-­‐net tiltmeters
• 11:40 - 12:00 Bruno REYNARD (ENS Lyon): Plastic creep of hydrated rocks at the plate interface
• 12:00 - 12:20 Teruo YAMASHITA: Effects of permeability anisotropy on the generation of slow slip
• 12:20 - 12:40 Takahiro HATANO: Seismicity in a model crust

Session 4: Gravity flows, Seismic sources and instrumentation
14:00 - 16:10

• 14:00 -­ 14:20 Pascal ALLEMAND: Monitoring riverine sediment fluxes during extreme climatic events: new tools and methods
• 14:20 -­ 14:40 Anne MANGENEY: Landslide detection and characterization using the generated seismic waves
• 14:40 -­ 15:10 Eléonore STUTZMANN: Observing and modeling seismic noise
• 15:10 -­ 15:30 Akito ARAYA: Development of a laser-­‐interferometric broadband seismometer for deep underground observations
• 15:30 -­ 15:50 Sebastien de RAUCOURT: The SELENE2 VBB seismometer
• 15:50 -­ 16:10 Tea Break
• 16:10 - 18:00 General Discussion and conclusion (New French ANR Projects 10minutes/project, New Japanese Projects, Future collaboration and final conclusion)

Download Todai Forum Paris workshop poster and program

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