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Discussion on package StrongMotion

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SurfaceRupture | Rupture | OriginRecordReference | OriginDescription | StrongMotionRecord | StrongMotionParameters | FootwallHangingwallIndicator |

StrongMotion overview page

StrongMotion class diagram

SurfaceRupture [type]

Some hints (flag, text, reference) on whether an event reportedly produced surface rupture.

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Example: FabianEuchner, 2014-10-21

SurfaceRupture.observed (type boolean)

If this flag is used, it is recommended to provide either text or literature evidence.

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Example: FabianEuchner, 2014-10-21

Note that although maybe given in text or literature, there is no parametric representation of uncertainty.
PhilippKästli, 2015-06-30

SurfaceRupture.evidence (type string)

What evidence supports the presence of surface rupture? (This field allows for amplification-specific classification, however no classification is currently enforced.)

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Example: FabianEuchner, 2014-10-21

SurfaceRupture.literatureSource (type rm:LiteratureSource)

Bibliographic information on the most relevant paper supporting the statement made in SurfaceRupture.evidence

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Example: FabianEuchner, 2014-10-21

Rupture [element]

Description of some boundary parameters of the the actually experienced slip process. This is kept separate from the concept of 'fault' (as a geological feature supposed (or: observed) to be capable to host rupture processes.

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Example: FabianEuchner, 2014-10-21

While the peak motion part of the schema is actively used, and thus got relevant peer review, the rupture description has been specified in the framework of the NERA project, however, afaik, it is not actively used. I am not sure whether it is adequate to host a detailed rupture description (referring to the EQ source process, corresponding models, in-situ observation and complex analysis results) in the same schema as the non-time-dynamic instrumental peak motion observations. Time line and audience could be too different
PhilippKästli, 2015-06-30

Rupture.publicID (type co:ResourceReference)

Globally unique identifier.

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Example: FabianEuchner, 2014-10-21

Rupture.faultID (type co:ResourceReference)

Reference to the fault on which the rupture happened. Note that while geometry is different, it is currently implied that rupture happenes on a single fault, or a subset of it.

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Example: FabianEuchner, 2014-10-21

With a future, more elaborate fault description (including potentially capabilities to describe distinct fault sections, and coherent faults), this linking is subject to change.

PhilippKästli, 2015-06-30

Rupture.displacement (type co:RealQuantity)

Maximum relative displacement on the fault plain.

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Example: FabianEuchner, 2014-10-21

Maybe we need also a mean displacement?
PhilippKästli, 2015-06-30

Rupture.area (type co:RealQuantity)

rupture area in [m^2]

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Example: FabianEuchner, 2014-10-21

Rupture.length (type co:RealQuantity)

Length of the rupture area in the direction of its largest extent, measured on the rupture plain and given in [m]

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Example: FabianEuchner, 2014-10-21

Is it relevant to distinguish between the longest extension and the longest horizontal extension? (in large quakes, horizontal orientation of the largest linear extent is typically implied)
PhilippKästli, 2015-06-30

Rupture.width (type co:RealQuantity)

Largest extension of the rupture area perpendicular to the line of its largest extent (measured on the rupture plain and given in [m])

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Example: FabianEuchner, 2014-10-21

Rupture.momentReleaseTop5km (type co:RealQuantity)

Moment release on the part of the rupture area not deeper than 5 km below surface, in [N*m]

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Example: FabianEuchner, 2014-10-21

Rupture.riseTime (type co:RealQuantity)

Duration of the coherent rupture process, in [s]

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Example: FabianEuchner, 2014-10-21

Rupture.ruptureGeometryWKT (type string)

description of the geometry of the rupture "plain" in Well Known Text format (https://en.wikipedia.org/wiki/Well-known_text) - types polygon or multipolygon recommended; in addition curvepolygon and circularstring are possible.

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Example: FabianEuchner, 2014-10-21

Rupture.ruptureVelocity (type co:RealQuantity) . mean rupture velocity in [m/s]

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Example: FabianEuchner, 2014-10-21

Question to the NERA community: The differentiation between SlipVelocity and RuptureVelocity is not clear to me.
PhilippKästli, 2015-06-30

Rupture.shallowAsperity (type boolean)

Presence of one or more shallow asperities within the top 5 km below surface

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Example: FabianEuchner, 2014-10-21

Rupture.shallowAsperityDepth (type co:RealQuantity)

Depth of the shallowest relevant asperity, in [m]

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Example: FabianEuchner, 2014-10-21

Rupture.slipVelocity (type co:RealQuantity)

mean slip velocity, in [m/s]

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Example: FabianEuchner, 2014-10-21

Question to the NERA community: The differentiation between SlipVelocity and RuptureVelocity is not clear to me.
PhilippKästli, 2015-06-30

Rupture.stressdrop (type co:RealQuantity)

in [Pa]

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Example: FabianEuchner, 2014-10-21

Rupture.surfaceRupture (type sm:SurfaceRupture)

cfr. type definition of surface rupture

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Example: FabianEuchner, 2014-10-21

Rupture.vr_to_vs (type co:RealQuantity)

phase velocity divided by shearwave velocity of the ruptured medium

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Example: FabianEuchner, 2014-10-21

Rupture.fwHwIndicator (type sm:FootwallHangingwallIndicator)

TODO

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Example: FabianEuchner, 2014-10-21

Rupture.referredStudy (type rm:LiteratureSource)

Relevant literature source for this rupture parametrization.

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Example: FabianEuchner, 2014-10-21

OriginRecordReference [element]

Link between an origin and a waveform record. Note that one waveform record may be linked to multiple concurrencing origins (location results) of the same event, resulting in different distance metrics.

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Example: FabianEuchner, 2014-10-21

OriginRecordReference.strongMotionRecordID (type co:ResourceReference)

Globally unique identifier of the waveform record (reference, foreign key)

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Example: FabianEuchner, 2014-10-21

OriginRecordReference.distRupturedArea (type co:RealQuantity)

Shortest distance between recording station and rupture surface, in [m]

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Example: FabianEuchner, 2014-10-21

OriginRecordReference.campbellDistance (type co:RealQuantity)

TODO

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Example: FabianEuchner, 2014-10-21

OriginRecordReference.joynerBooreDistance (type co:RealQuantity)

Shortest distance from a site to the surface projection of the rupture surface, in [m]

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Example: FabianEuchner, 2014-10-21

OriginRecordReference.ruptureToStationAzimuth (type co:RealQuantity)

(Smallest) angle between the vector of the main rupture direction, and the line from hypocenter to the recording station; in [degrees].

Discussion area: please fill in your comments below (between the horizontal lines) and tag with your user name and the date of your comment.
Example: FabianEuchner, 2014-10-21

"Line from Hypocenter to recording station": Direct connection or fastest wave path?
PhilippKaestli, 2015-07-21

OriginRecordReference.closestFaultDistance (type co:RealQuantity)

Closest distance between the station and the ruptured area on the fault plane; in [meters]

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Example: FabianEuchner, 2014-10-21

OriginRecordReference.preEventLength (type float)

Length of the pre-event window of the waveform data provided in the referenced record, assuming the origin time of the referring origin. In [seconds]

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Example: FabianEuchner, 2014-10-21

OriginRecordReference.postEventLength (type float)

TODO

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Example: FabianEuchner, 2014-10-21

OriginDescription [element]

Conceptually an extension of a BasicEventDescription.origin for some elements/attributes of relevance (by now, the number of strong motion traces available, and the rupture description.

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Example: FabianEuchner, 2014-10-21

OriginDescription.publicID (type co:ResourceReference)

Unique identifier of the OriginDescription instance.

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Example: FabianEuchner, 2014-10-21

OriginDescription.originID (type co:ResourceReference)

Public Identifier referring to the (BasicEventDescription) origin which is extended here.

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Example: FabianEuchner, 2014-10-21

OriginDescription.waveformCount (type int)

number of waveforms (datasets from individual streams) available for, and linked to this event.

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Example: FabianEuchner, 2014-10-21

OriginDescription.creationInfo (type rm:CreationInfo)

Data provenance

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Example: FabianEuchner, 2014-10-21

OriginDescription.rupture (type sm:Rupture)

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Example: FabianEuchner, 2014-10-21

OriginDescription.originRecordReference (type sm:OriginRecordReference)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord [element]

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.publicID (type co:ResourceReference)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.startTime (type co:TimeQuantity)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.duration (type float)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.waveformStreamID (type wf:WaveformStreamID)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.filterChain (type co:ResourceReference)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.waveformFile (type rm:FileResource)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.gainUnit (type string)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.resampleRateDenominator (type int)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.resampleRateNumerator (type int)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.owner (type rm:Contact)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.creationInfo (type rm:CreationInfo)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionRecord.peakMotion (type wf:PeakMotion)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionParameters [element]

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionParameters.publicID (type co:ResourceReference)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionParameters.description (type string)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionParameters.creationInfo (type rm:CreationInfo)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionParameters.originDescription (type sm:OriginDescription)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionParameters.strongMotionRecord (type sm:StrongMotionRecord)

TODO

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Example: FabianEuchner, 2014-10-21

StrongMotionParameters.comment (type rm:Comment)

TODO

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Example: FabianEuchner, 2014-10-21

FootwallHangingwallIndicator [enumeration]

TODO

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Example: FabianEuchner, 2014-10-21

FOOTWALL: footwall
HANGING_WALL: hanging wall