Title: Using the SCEC Computational Platforms for Seismic Hazard Analysis Research
1Using the SCEC Computational Platforms for
Seismic Hazard Analysis Research
Philip Maechling SCEC IT Architect www.scec.org/cm
e Geoinformatics 2006 11 May 2006
2Outline
- Examples of SCEC Seismic Hazard Analysis Research
- Overview of SCEC Earthquake System Science
- Development of SCEC Computational Platform Concept
3Outline
- Examples of SCEC Seismic Hazard Analysis Research
- Overview of SCEC Earthquake System Science
- Development of SCEC Computational Platform Concept
4Puente Hills Blind Thrust System
- Four large earthquakes of M 7.2-7.5 have occurred
on the Puente Hills blind thrust in the last
11,000 years. - This fault is capable of producing an earthquake
of M gt 7 beneath downtown Los Angeles - The ground motions from such an event might
severely damage even well-designed buildings
Dolan et al. (2003)
5Scenario Earthquake Simulations Puente Hills
Peak SA 2.0 magnitude Map
Velocity Y Component Animation
Puente Hills Simulation Scenario Earthquake (10
Hz) Robert Graves (AWM), Amit Chourasia et al
(Viz)
6Projected Losses From Puente Hills Event
Predicted direct losses (Field et al.,
2005) 82 B - 252 B 3,000 - 18,000
fatalities 142,000 - 735,000 displaced
households 30,000 - 99,000 tons of debris
Field, E. et al., (2005) Earthquake Spectra
7- TeraShake Simulation area
- 600 km x 300 km x 80 km
- dx200m
- Mesh of 1.8 Billion cubes
- 0.011 sec time step, 20,000 time steps 3 min
- Kinematic source Cajon Creek to Bombay Beach (or
back - -60 sec source duration
- -18,886 point sources, each 6,800 time steps in
duration
8Southernmost San Andreas M7.7
NW?SE
NW?SE
9Pathway 2 TeraShake Platform
M7.7 Earthquake on Southernmost San Andreas Fault
Olsen et al. (2006)
10Particle Velocities Along N50E Profile
Largest Peak Motions above ridge between SG and
LA Basins
Olsen et al. (2006) Geophysical Research Letters
11Validation Using Seismic Data
Fontana 01/06/05
Yorba Linda 09/03/02
PGV Data (SH)
PGV Synthetic (SH)
12CyberShake Apply 3D Ground Motion Modeling to
Probabilistic Seismic Hazard Calculations
PGA (g) with 2 Probability of Exceedance in 50
years National Seismic Hazard Mapping Project
13Probabilistic Seismic Hazard Curve
Exceeded every year
Ground motion that will be exceeded every year
Exceeded 1 time in 10 years
Ground motion that a person can expect to be
exceeded during their lifetime
Exceeded 1 time in 100 years
Annual frequency of exceedance
Typical design for buildings
10 probability of exceedance in 50 years
Exceeded 1 time in 1000 years
Typical design for hospitals
I-10 Freeway during Northridge
Exceeded 1 time in 10,000 years
Typical design for nuclear power plant
Minor damage
Moderate damage
0.1
0.2
0.3
0.4
0.5
0.6
Ground Motion Peak Ground Acceleration
14SCEC/CME OpenSHA Conceptual Model
15San Andreas Earthquake Peak Ground Velocity Maps
Peak Velocity Ground Motion Maps for M7.7 using
3D Ground Motion Modeling
Peak Velocity Ground Motion Map for M7.7 using
Attenuation Relationship
16(No Transcript)
17CyberShake Platform
- Simulates ground motions for potential fault
ruptures within 200 km of each site - 12,700 sources in SoCal from USGS 2002 ERF
- Extends ERF to multiple hypocenters and slip
models for each source - 100,000 ground motion simulations for each site
18CyberShake Platform
19CyberShake Platform
20CyberShake Platform
Graves, R., et al., SSA 2006
21Common Elements to this SCEC Research
- Predictive, system-oriented, socially relevant
geophysical research - Computationally intensive and data intensive
research. - Requires large interdisciplinary teams (multiple
geoscientific specialties, multiple computer
science specialties). - The computational capabilities needed by each of
these research efforts has been preserved as a
SCEC Computational Platform (OpenSHA, TeraShake,
CyberShake)
22Outline
- Examples of SCEC Seismic Hazard Analysis Research
- Overview of SCEC Earthquake System Science
- Development of SCEC Computational Platform Concept
23- Southern California Earthquake Center
- Involves 500 scientists at 55 institutions
worldwide - Focuses on earthquake system science using
Southern California as a natural laboratory - Translates basic research into practical products
for earthquake risk reduction
SCEC Focus Groups
24SCEC Member Institutions(October 1, 2005)
25Southern California A Natural Laboratory for
Earthquake System Science
- Complex network of
- over 300 active faults
- 12,700 earthquake
- sources in 2002
- USGS model
- Highly heterogeneous
- geologic structure
-
- Large urban population
- with densely built
- environment ? high risk
- System-level studies coordinated by SCEC under
NSF and USGS sponsorship
26Three Global Geosystems
Atmosphere
Hydrosphere
Cryosphere
Biosphere
Lithosphere
Asthenosphere
Deep Mantle
Outer Core
Inner Core
27SCEC Community Velocity Model
H. Magistrale et al. (2000)
28SCEC Community Fault Model
A. Plesch and J. Shaw (2003)
29SCEC Community Block Model
Set of interconnected, closed volumes that are
bounded by major faults, as well as topography,
base-of-seismicity, and Moho surfaces.
Intended for use in fault systems analysis
(FEM) property modeling
J. Shaw et al. (2004)
30SCEC Crustal Motion Map
CMM.3.0.1 (Agnew et al., 2003)
31Unified Structural Representation
Crustal Motion Map
Tectonic models
Community Fault Model
Community Block Model
Structural models
32SCEC/CME Focus On Seismic Hazard Analysis
- SCEC/CME System aims to extend and enhance
geosciences work already performed in the area of
seismic hazard analysis.
Metadata for Map IMT Peak Acceleration POE
10 TimeSpan 50 Years IMR 1) Boore, Joyner, and
Fumal (BJF 1993, 1994a) with later
modifications to differentiate thrust and
strike-slip faulting (Boore et al., 1994b), 2)
Sadigh et al. (1993) and 3) Campbell and
Bozorgnia (1994). ERF (and more)
33Seismic Hazard Analysis is a System-Level Problem
Seismicity
Paleoseismology
Geologic structure
Local site effects
Faults
Seismic Hazard Model
Stress transfer
Rupture dynamics
Crustal motion
Crustal deformation
Seismic velocity structure
34SHA Computational Pathways
Standard seismic hazard analysis
1
Empirical models
Intensity Measures
Earthquake Rupture Forecast
Attenuation Relationship
1
35SCEC/CME Project
Goal To develop a cyberinfrastructure that can
support system-level earthquake science the
SCEC Community Modeling Environment (CME)
Support 5-yr project funded by the NSF/ITR
program under the CISE and Geosciences
Directorates Oct 1, 2001 Sept 30, 2006
NSF CISE GEO
SCEC/ITR Project
USGS
ISI
Information Science
Earth Science
SDSC
IRIS
SCEC Institutions
www.scec.org/cme
36Outline
- Examples of SCEC Seismic Hazard Analysis Research
- Overview of SCEC Earthquake System Science
- Development of SCEC Computational Platform Concept
37SCEC Community Modeling EnvironmentA
collaboratory for system-level earthquake science
KNOWLEDGE REPRESENTATION REASONING Knowledge
Server Knowledge base access, Inference Translatio
n Services Syntactic semantic translation
Users
Knowledge Base
Ontologies Curated taxonomies, Relations
constraints
Pathway Models Pathway templates, Models of
simulation codes
DIGITAL LIBRARIES Navigation Queries Versioning
, Replication Mediated Collections Federated acce
ss
KNOWLEDGE ACQUISITION Acquisition
Interfaces Dialog planning, Pathway
construction strategies Pathway Assembly Template
instantiation, Resource selection, Constraint
checking
Code Repositories
FSM
RDM
AWM
SRM
Data Simulation Products
Data Collections
GRID Pathway Execution Policy, Data ingest,
Repository access Grid Services Compute storage
management, Security
Pathway Instantiations
Storage
Computing
38SCEC Community Modeling EnvironmentA
grid-enabled collaboratory for system-level
earthquake science
6
Intelligent services (smart assistants) Integrated
system tools (workbench/dashboard) Workflow
management Domain applications (webservices/applic
ations) Resource sharing (grids) Hardware
(computing, networking, storage)
5
4
3
2
1
Cyberinfrastructure Layering
39Seismic Hazard Research Has Driven the
Development of SCEC Computation Platforms
- 2003
- OpenSHA
- 2004
- OpenSHA, TeraShake
- 2005
- OpenSHA, TeraShake, CyberShake
- 2006
- OpenSHA, TeraShake, CyberShake, SCEC Earthworks
See the TeraShake, CyberShake, SCEC Earthworks
Posters/Demos This Meeting
40SCEC Computational Platform Concept
- Computational Platform Concept emerged from the
following observations - Using Cyberinfrastructure in large scale research
quickly identifies which technologies are ready
for application, and what are still research. - A significant portion of the work involved in a
large research study is the vertical integration
of the Cyberinfrastructure used. It is desirable
to preserve this integration once achieved - Large scale research computing needs
geoscientists and computer scientists working
together.
41SCEC Computational Platform Concept
- Definition of Computational Platform
- A vertically integrated collection of hardware,
software, and people that provides a broadly
useful research capability - Implied capabilities
- Validated simulation software and geophysical
models - Re-usable simulation capabilities
- Imports parameters from other systems. Exports
results to other systems - IT/geoscience collaboration involved in operation
- Access to High-performance hardware and large
scale data and metadata management. - May use Workflow management tools
42The Future of SCEC Research Geoscientists and
Computer Scientists Collaborating
43SCEC Computational Platform Concept
44Conclusions
- Use research projects to vertically integration
of geoinformatic tools with other
Cyberinfrastructure. - Geosciences need interdisciplinary collaborations
and we must develop a community in which there
are appropriate benefits and rewards to all
participants.
www.scec.org/cme
45End