Spectral Matching

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Spectral Matching

I think the two tables at the end of this page should be moved to the end ofthe "Match Type" page.

The spectral matching dialog is the main tool for performing spectral matching. Despite its simplicity, it offers a large number of possibilities for spectrally matching records. For example, it can match individual components as well as pairs and triplets of records. And it can be used to directly match record resultants such as SRSS, Geomean, RotD50, RotD100 & RotD00, and can match all 3 components of a record including the vertical component.

Match Type

In the Match Type section, the user selects several options that define the main parameters of the spectral matching process as follows:

•Match option: Components, Bidirectional (H₁ + H₂) or 3-Components (H₁ + H₂ + V)

•Bidir Type: Geomean, SRSS, H1 & H2, RotD50 (approximate), RotD100 (approximate), RotD100, and RotD100 & RotD00.

•Preserve H1/H2 ratio: Displayed in case users selected the Geomean, SRSS RotD50 (approximate) or RotD100 (approximate) Bidir Types only. when this feature is selected, the ratio of H1 component to H2 component spectra are preserved after spectral matching. Examples are provided in the Match Type section.

•Matching Method: Tight, Mean, Mean + StdDev or Mean + LogSigma

•Suite Dispersion: Can be set only when the "Mean + Dispersion" Matching Type is selected. QuakeManager will match the suite dispersion based on the selected option (= dispersion, ≥ dispersion or ≤ dispersion). Available types of dispersion are standard deviation and log sigma.

Matching Criteria

Selecting the Target Spectrum should be one of the following:

•Horizontal Target: Select the target spectrum to match for horizontal components. The target could be a code-based spectrum (IBC Spectrum) or user-defined one.

•Vertical Target: Ability to match the vertical spectrum. This option is displayed only in case users selected the 3-Components Bidirectional (Bidir) Type.

In case of multiple matching targets - QuakeManager supports defining up to three matching criteria - the user may define the same or different matching criteria for all targets.

Tables 1 and 2 below represents the different options of target and matching criteria with respect to the matching types.

Input/Output Suites

Set a specific input suite and another output suite.

•Input Suite: suite consisting of records to undergo spectral matching

•Output Suite: resulting suite post spectral matching in which resulting records will be stored

Run & Results

•Report: View the matching report after matching is completed

•Run: run spectral matching

•Apply: apply changes if any

•Close: close the spectral matching dialog

Table 1: Required Target Spectra for matching with different Bidirectional types

Match	Target	Geomean	SRSS	H1&H2	RotD50 (apx)	RotD100 (apx)	RotD100	RotD100 & RotD00
Bidir	Target 1
	Target 2
	Target Vertical
3-Comp	Target 1
	Target 2
	Target Vertical

Table2: Matching Criteria definition with respect to different Bidirectional types

Match	Target	Geomean	SRSS	H1&H2	RotD50 (apx)	RotD100 (apx)	RotD100	RotD100 & RotD00
Bidir	Matching Criteria 1
	Matching Criteria 2
	Matching Criteria 3
3-Comp	Matching Criteria 1
	Matching Criteria 2
	Matching Criteria 3