SIG: Synthetic Seismogram Exchange Standards (formats

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SIG Synthetic Seismogram Exchange Standards
(formats metadata) Is it time to establish
exchange standards for synthetic seismograms?
David Okaya, USC Tim Ahern, IRIS
IRIS Annual Workshop 12 June 2004
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SIG Synthetics Exchange Standards
David Okaya Why an Exchange Standard? Dogan
Seber Importance of Metadata for
Synthetics Linus Kamb But we have a standard --
Can SEED support synthetics? Seiji
Tsuboi XML-SEED its application to
synthetic seismogram database Torild van
Eck FDSN perspective on synthetics Heiner
Igel SPICE efforts on synthetics
Discussion
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Why an Exchange Standard?
Archive and exchange between seismologists,
geoscientists and (civil/earthquake) engineers.
Interoperatbility with upcoming digital and
information technologies - digital
libraries. - interdisciplinary
cross-correlations. - data and metadata
searching, mining (KRR). - visualization
methods from Computer Sciences.
NSF-Cyberinfrastructure (e.g., GEON, SCEC/ITR)
international efforts such as SPICE.
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Characteristics of Synthetic Seismograms
Volumes nodes / dim. dimensions
components
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What Exists Now?
Traditional SAC, AH, SEGY, CSS, ascii, raw
binary, readme
pros known formats, familiar to communities,
translators exist. cons limited metadata,
limited use for 3D/4D.
SEED/miniSEED
pros infrastructure already exists for
archive/distribution translators,
utilities. cons lacks familiarity within
synthetics community needs alteration for
higher D and metadata.
Other forms e.g., netCDF
pros established use within other natural
sciences engineering useful for computer
interoperatbility. cons "non-seismological"
little opportunity to adjust.
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What Do We Need?
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Example SCEC/ITR Use of Synthetics
SCEC/ITR is a 10M / 5-year Information
Technology project. Collaboration between
SCEC, USGS, IRIS, with SDSC, ISI. PIs T.
Jordan, J.B. Minster, R. Moore, C. Kesselman.
"Community Modeling Environment" (CME) -
Develop for broad audience an integrated
information infrastructure for earthquake
science. - Grid computing, digital libraries,
KRR, visualization. Role of Synthetics -
Physics-based simulation of ground motion for
seismic hazard analysis. - Takes into account
wave propagation through 3D structure, source
dynamics, and (non)-linear site effects.
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SCEC/ITR Community Modeling Environment
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(No Transcript)
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Do We Need a Standard?
For individual work, not necessarily. Useful
for exchange among seismologists. Essential
for IT interoperability.
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SIG Synthetics Exchange Standards
David Okaya Why an Exchange Standard? Dogan
Seber Importance of Metadata for
Synthetics Linus Kamb But we have a standard --
Can SEED support synthetics? Seiji
Tsuboi XML-SEED its application to
synthetic seismogram database Torild van
Eck FDSN perspective on synthetics Heiner
Igel SPICE efforts on synthetics
Discussion