STANDARD RUPTURE FORMAT

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STANDARD RUPTURE FORMAT

• Provide efficient interface between rupture model
  producers (CFM, EQ physics) and rupture model
  users (GM modelers, SHA)
• Practical, flexible and anticipate future needs

Producers
SRF
Users
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Ground Motion Simulations current practice
Start with fault location and geometry from
Community Fault Model
approximate with planar rectangles
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Ground Motion Simulations current practice

• Most (all?) EQ scaling relations and slip
  characterizations assume planar rectangles
• Andrews (1980), Wells and Coppersmith (1994),
  Somerville et al. (1997), Mai and Beroza (2000),
  Mai and Beroza (2002), Guatteri et al. (2004),

• Generate rupture description for planar fault
  segments

• Run kinematic simulation

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CyberSHAke Application (105 realizations)
TeraShake Scale Model Region

• 350 km X 450 km X 60 km

• 1.2 X 109 node FD grid (h200 m)

• SGT saved at 5.8 X 106 locations

• 15 hour run time using 220 CPUs on HPCC Linux
  Cluster

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Methodology test for Mw 7.15 Puente Hills
rupture solid forward FD simulation (8 hrs,
120 CPUs) dashed convolution of rupture model
with SGT (10 mins, 1 CPU)
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Proposed File Format VERSION HEADER BLOCK
(optional) DATA BLOCK
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DATA BLOCK
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Sample file
VERSION
HEADER BLOCK
DATA BLOCK