QuakeML An XML schema for seismology

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QuakeMLAn XML schema for seismology
ETH Swiss Federal Institute of Technology Zürich

• Danijel Schorlemmer
• Silvio Maraini
• Manfred Baer
• ETH Zürich, Swiss Seismological Service,
  Switzerland

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Objectives
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One catalog format definition for Data
exchange Network ? Analysis-software Network ?
Network Analysis-software ? Analysis-software Dif
ferent seismological aspects Seismicity
analysis Tomography Full waveform analysis
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Objectives
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Additional Constraints Use only open
standards Open source multi-platform
tools Platform independent Flexible extensible
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XML
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Why XML (eXtensible Markup Language)? Open
standards W3C XML, XPath, XSLT, XLink,
XPointer, XML Schema, ... Open source
multi-platform tools Xerces, Xalan (Apache),
libxml2, libxslt (Gnome) Platform
independent ASCII-files with defined
encodings Flexible extensible XML-Namespaces
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XML
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Different seismological aspects Multi-level
definition Level Feature 1 simple
location/origin/time/depth/magnitude 2 1
multiple locations per event 3 2 quality
information/general info 4 3 pick times/other
station info 5 4 waveforms 6 5 channel
info/calibration data 7 ...
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Example QuakeML Level 1
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lt?xml version"1.0"?gt lteventsgt ltevent
id"0001"gt ltlocation main"yes" id"00010002"
method"inversion" analysis-type"manual"gt
ltorigin-time fixed"no" timezone"UTC"
error"00/00/00T000001"gt
ltyeargt2002lt/yeargt ltmonthgt05lt/monthgt
ltdaygt01lt/daygt lthourgt01lt/hourgt
ltminutegt11lt/minutegt ltsecondgt55.1lt/secondgt
lt/origin-timegt ltlatitude fixed"no"
unit"degree" error"0"gt47.23lt/latitudegt
ltlongitude fixed"no" unit"degree"
error"0"gt9.50lt/longitudegt ltdepth
fixed"no" unit"km" error"0.1"gt3.1lt/depthgt
ltmagnitude fixed"no" type"ML" stations"7"
error"0.1"gt1.6lt/magnitudegt lt/locationgt
lt/eventgt ltevent id"0002"gt ...
lt/eventgt lt/eventsgt
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Advantages
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Modern and historic catalogs incomplete origin
times incomplete location and magnitude
information magnitudes and intensities XSLT,
XPath for creating lower level QuakeML, any
XML, HTML, SVG, PDF, ... see Demo! Inter-level
compatibility Private namespace
extensions Automatic validation possible (XML
schema)
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Possibilities and Features XSLT
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XML Transformations QuakeML XSL HTML (PDF,
JPG, ...)
XSLT
QuakeML
XSL
HTML
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Possibilities and Features Namespaces
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lt?xml version"1.0"?gt ltevents xmlns"http//quakem
l.ethz.ch/ns/quakeml" xmlnssed"http//sed.ethz.
ch/ns/sed"gt ltevent id"0001"gt ltlocation
main"yes" id"00010002" method"inversion"
analysis-type"manual"gt ltorigin-time
fixed"no" timezone"UTC" error"00/00/00T000001
"gt ltyeargt2002lt/yeargt
ltmonthgt05lt/monthgt ltdaygt01lt/daygt
lthourgt01lt/hourgt ltminutegt11lt/minutegt
ltsecondgt55.1lt/secondgt lt/origin-timegt
ltlatitude fixed"no" unit"degree"
error"0"gt47.23lt/latitudegt ltlongitude
fixed"no" unit"degree" error"0"gt9.50lt/longitude
gt ltsedcoordinatesgt ltsedlatitudegt237lt/sed
latitudegt ltsedlongitudegt412lt/sedlongitudegt
ltsedcoordinatesgt ltdepth fixed"no"
unit"km" error"0.1"gt3.1lt/depthgt
ltmagnitude fixed"no" type"ML" stations"7"
error"0.1"gt1.6lt/magnitudegt lt/locationgt
lt/eventgt ltevent id"0002"gt ...
lt/eventgt lt/eventsgt
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Possibilities and Features Historic Catalogs
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lt?xml version"1.0"?gt lteventsgt ltevent
id"0001"gt ltlocation main"yes" id"00010002"
method"historic" analysis-type"guess"gt
ltorigin-time fixed"no" timezone"UTC"
error"00/00/00T060000"gt
ltyeargt1356lt/yeargt ltmonthgt10lt/monthgt
ltdaygt18lt/daygt lthourgt1lt/hourgt
ltminutegtlt/minutegt ltsecondgtlt/secondgt
lt/origin-timegt ltlatitude fixed"no"
unit"degree" error"0.1"gt47.46lt/latitudegt
ltlongitude fixed"no" unit"degree"
error"0.1"gt7.60lt/longitudegt ltdepth
fixed"no" unit"km" error"5"gt12lt/depthgt
ltmagnitude fixed"no" type"ML"
error"0.5"gt6.9lt/magnitudegt lt/locationgt
lt/eventgt ltevent id"0002"gt ...
lt/eventgt lt/eventsgt
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Outlook
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Definition of levels 1-4 Review of this
definition Test implementation (SED, SCEC,
RELM) Setup of a QuakeML website Documentation
of progress Repository of schemas, stylesheets,
etc.