The ACES international cooperation: advances and challenges

1
The ACES international cooperationadvances and
challenges

• To develop realistic numerical simulation models
• 2. To foster collaboration
• 3. To foster development of infrastructure
  programs

Develop a unified simulation model for earthquake
generation and earthquake cycles
2
Organization

• ACES was established under the Asia Pacific
• Economic Cooperation (APEC) sponsored by
• Australia, China, Japan and USA
• Australia ISR and ARC
• China MOST, NSFC and CSB
• Japan RIST and JSPS
• USA NASA NSF

3
The scientific challenge

• Science involves the feedback between a
  predictive
• theory and observations

• Such a theory does not exist for earthquakes

WHY?

• The earth is a complex system

nonlinear elements interactions
cooperative behaviour qualitatively different
from elements
4
SimulationA powerful tool to fuel breakthroughs
5
History program of activities

• 1994 Discussions
• 1995 AESF Proposal
• 1996 NSPE Proposal
• ACES Proposal endorsed
• Planning meeting
• 1999 Workshop (AUS)
• 2000 WG Mtg Workshop (JPN) Visitors
• 2001 WG Mtg (USA)
• 2002 Workshop (USA)
• 2004 WG Mtg (AUS)
• 2004 Workshop (CHINA)

6
Selected collaborative projects 2000

• Australia/Japan
• Fault zone evolution
• LSMearth/GeoFEM interface
• Australia/USA
• Fault constitutive laws/rate-state friction
• Strong motion/teleseismic obs
• Australia/China
• Mesoscopic mechanism for catastrophic rupture
• Physical mechanism for LURR
• Probe relation CP/LURR and critical scaling

7
Infrastructure developments

• Japan
• Earth Simulator 40 Tflops (1997-2002)
• GeoFEM macro-scale software system
• Australia
• Solid Earth Simulator 200 Gflops (2000-2002)
• LSMearth micro-scale software system
• ACcESS MNRF 2 Tflops (2002-2007)
• ESS multi-scale software system