Category

Parameter

Description

Section Image

Triplet (activated in case Triplet is selected)

DefaultComp

Default Component ID

H1

H1 Comp Database ID

H2

H2 Comp Database ID

V

V Comp Database ID

Component (activated in case a component is selected)

TripletComp

Display the number of the selected component in the Triplet (usually, Horizontal: 1 or 2, Vertical: 3)

AsRecorded

Flag showing whether the selected component in its original state or modified

Corrected

Flag indicating whether the record was corrected or not

Attributes

Title

Displays the title of the record

RecordSeqNum

RSN, an artibrary unique number assigned to each strong-motion record in the flatfile for identification purposes.

Categories

Shows the category (user-defined) to which the selected record belongs to. Can be used to group and search for records. User may enter multiple categories separated by semicolon ";".

Keywords

Keywords associated with this record. Can be used for search, grouping and filtering. User may enter multiple keywords separated by semicolon ";".

Collection

Name of the Collection to which the selected record belongs to.

DateModified

Date when the record properties were modified

FpAz

Fault Parallel Azimuth angle

FN/FP

Flag indicating if current component or triplet is rotated to FN and/or FP.
0: None , 1: Fault Normal , 2: Fault Parallel , 3: Fault Normal/Parallel (Triplet)

Exclude

Defines if the record is excluded from the ground motion selection

ExcludeReason

Provide reason why is record excluded from the ground motion selection (Optional).

DateAdded

Date when the record was added to the database

Pulse

IsPulse

Displays 1 if record is a pulse, -1 if the record is not pulse or 0 if unknown

PulseAz

Displays Pulse Azimuth

PulseScore

Shows the Pulse score of the record ranged between 0 and 1. Score higher than 0.85 indicates that the record has a pulse

Tpulse (s)

Displays the pulse period in seconds.

Selection Properties

Rank

Displays the record fit rank in the suite

SF

Displays the record scale factor

SFmin

Displays the minimum defined scale factor in the GM Fitting Criteria

SFmax

Displays the maximum defined scale factor in the GM Fitting Criteria

Error

Displays the error fitting between the record and the target spectra

NormError

Displays Scale Error normalized such that the smallest error is equal to 1

ErrorType

Shows the Fitting Error Type defined in the Error Measure in GM Fitting Criteria

File

FileFormat

Shows the file format of the record

FileAgency

Shows the Agency which produced the file

OrigGMBD

Shows the Original Ground Motion Database that the files come from (e.g. NGA-West2)

Channel Index

Displays the channel number within multichannel file

DataSeriesHistory

Shows the comments describing the history of the file

FolderDisk

Shows the folder location of this file on the disk

FileDisk

Shows the file name of this record on disk

FullPathDisk

Shows full disk path that will be used to open the file: CollectionDiskPath + FolderDisk + FileDisk

FullPathDiskCache

Shows the latest read location of this file on disk

FileComment

Shows the general comment regarding this file

FileExistIcon

Displays 1 if file exist and 0 if file does not exist

Event

EventName

Shows the earthquake event name

Event ID

Show the arbitrary unique ID assigned to each earthquake for identification purpose

EventDate

Shows the date and time of the selected event

FaultName

Shows the name of causative fault. It is taken from the fault database of the National Seismic Hazard Maps (Frankel el al., 2020)

LongHypo

Displays the Hypocenter longitude

LatHypo

Displays the Hypocenter latitude

DepthHypo

Hypocenter Depth

EventLocation

Shows the full location of the event

State

Shows the state where the event occurred

Country

Shows the country where the event occurred

Regime

Displays the Tectonic Regime. 1: Active Tectonic, 2: Stable Continent, 3: Subduction

Mw

Displays the Moment Magnitude of the event

ML

Displays the Local Magnitude of the event

MS

Displays the Surface-Wave Magnitude of the event

M_Other

Displays any other/unknown Magnitude type

Mo (dyne*cm)

Evaluates the Earthquake Seismic Moment:  Log10(Mo) = 1.5Mw + 16.05

ShakeMapURL

Displays the Shake Map URL

Mechanism

Displays the Event Mechanism values. 0: Strike-Slip, 1: Normal, 2: Reverse, 3: Reverse-Oblique, 4: Normal-Oblique, 5: Subduction

Strike

Displays the strike azimuth angle of the fault plane (0 ≤ Strike ≤ 360)

Dip

Displays the dip angle of the fault plane (0 ≤ Dip ≤ 90)

Rake

Displays the Rake which is an angle measured on the fault plane counterclockwise from the reference strike direction to the average slip direction (-180 ≤ Rake ≤ 180)

LengthRupture (km)

Displays the length rupture. Total Length 'L' of the finite rupture model

WidthRupture (km)

Displays the width rupture. Width 'W' of the finite rupture model (=A/L)

AreaRupture (km^2)

Displays rupture area. Total Area 'A' of the finite rupture model

MeanSlip

Displays Average Fault Displacement. The average amount of slip over the ruptured area. It is computed as Mo/(Mu*A*1.0E+10) where Mu = 3.58e11

RiseTime (s)

Displays the Rise Time in seconds. It is the time required for the completion of slip at a point on the fault plane. When there are multiple estimates of rise time, the average value is used

SlipRate (mm/yr)

Displays the Fault Slip Rate in mm/year (Slip rate on the causative fault). It is taken from the from the fault database of the National Seismic Hazard Maps (Frankel et al., 2002)

SlipVelocity

Displays the average slip velocity in cm/s which is equals to Average Fault Displacement ÷ Rise Time

RuptureVelocity (km/s)

Displays the Fault Rupture Velocity in kilometers per second. The Rupture Velocity (Vr) is the speed at which a rupture front moves along the fault during an earthquake. When there are multiple estimates of rupture velocity, the average value is used.

Station

Agency[Station]

Shows the Station Agency

SNCL

Displays Station Network Channel Location identifier

Station

Station Name

StationID

Station Identification Code

StationNumber

Station Sequence Number

StationDescription

Station Description

StationAddress

State Address

StationOwner

Station Owner

Long[Station]

Displays Station Longitude

Lat[Station]

Displays Station Latitude

Elev[Station] (m)

Displays Station Elevation

Vs30 (m/s)

Displays Soil Shear Wave Velocity at Station

SiteUBC

Displays Station UBC Site

SiteNEHRP

Displays Station NEHRP Site

DepthToRock (m)

Displays depth of soil to rock at the station

StructureInfluence

Displays the structural influence

Structure

Displays the Structure type

StructureMaterial

Shows the structure material (Reinforced Concrete, Steel, Wood, Masonry...)

InstLoc

Shows instrument location in structure

NumberOfStories

Shows the number of stories for the structure

BuildingStory

Displays the story at which the instrument is located

BuildingHeight (m)

Displays building height in meters

BridgeSpans

Displays number of bridge spans

StructureDescription

Provides a description for the structure

EventToStation

dEpi

The epicentral distance is defined as the shortest distance from a seismic station or any other site to the epicenter of the seismic event.

dHypo

The hypocentral distance is defined as the shortest distance from a seismic station or any other site to the hypocenter of the seismic event.

dRup

The shortest distance from a site or seismic station to a rupture surface

dSurf

Joyner-Boore Distance (Rjb) - shortest horizontal distance from the recording site to the vertical projection of the rupture.

dSeism

Campbell R Distance, shortest distance from the recording site to the seismogenic portion of the ruptures area (Campbell, 1977). This distance measure assumes that the rupture with the near-surface sediment or the mayow portion of fault gouge is non-seismogenic. The depth below which rupture is seismogenic was estimated using new guidelines from Campbell. The shortest distance from a site to a point on a rupture surface that is deeper than some minimum seismogenic depth. 

dRMS

Root Mean Squared Distance

AzimuthFore

Displays Epicenter to Sensor Azimuth

AzimuthBack

Displays Sensor to Epicenter Azimuth

Sensor

Model

Displays sensor model

Manufacturer

Displays sensor manufacturer

SerialNumber

Displays sensor serial number

AzimuthInst

Displays Instrument Azimuth

InclinationInst

Displays Instrument Inclination (0 deg - 180 deg), where zero indicates upward ground motion, 0 indicates downward motion, and 90 indicates horizontal.

OrientationInst

Displays Instrument Orientation description

Array

AgencyArray

Shows the Agency responsible for the array

IndentifierArray

Displays Array Identifier

Processing

FreqHP (Hz)

Displays High Pass Frequency 

FreqLP (Hz)

Displays Low Pass Frequency

FreqLU (Hz)

Displays Lowest Usable Frequency

FilterType

Displays type of filter used to remove noise at long and short periods

FilterPasses

Displays number of passes of filter

ProcessingComments

Displays the processing comments

Raw Series

RawSamplesPerSecond (Hz)

Displays the number of samples per second or 1/dt

RawFirstSampleTime

Displays the time of first recorded sample

Data Series

SamplesPerSecond (Hz)

Displays the number of samples per second or 1/dt (i.e. sampling frequency)

FirstSampleTime

Displays the time of first recorded sample

Cause

Display the event that caused the ground motion (Earthquake, Volcano...)

NumberOfSamples

Displays number of recorded points in the Data Series

PhysicalParameter

Displays the Physical Parameter, one of: UnProcessed Acceleration Processed Acceleration Velocity Absolute Displacement Relative Displacement Response Spectra (Sa) Response Spectra (Sv) Response Spectra (Sd) Response Spectra (PSA) Response Spectra (PSV) Geometric Mean PSA Nonlinear Response Spectra (Sa) Nonlinear Response Spectra (Sv) Nonlinear Response Spectra (Sd) Nonlinear Response Spectra (PSA) Nonlinear Response Spectra (PSV) Geometric Mean Nonlinear PSA

Units

Displays record original units

IM - Intensity Measures

PGA

Peak Ground Acceleration

PGV

Peak Ground Velocity

PGD

Peak Ground Displacement

EPA

Effective Peak Acceleration

EPV

Effective Peak Velocity

EPD

Effective Peak Displacement

SPA

Sustained Peak Acceleration

SPV

Sustained Peak Velocity

RMSa

Root-Mean-Square Acceleration

IncVel

Incremental Velocity

IncDisp

Incremental Displacement

CAV

Cumulative Absolute Velocity

CAV5

Cumulative Absolute Velocity for Acc < 5cm/s/s

CAVstd (cm/s)

Standardized Cumulative

Absolute Velocity

CAVs

Maximum Standardized

Cumulative Absolute Velocity

CAD

Cumulative Absolute Displacement

IM - Engineering Intensities

SIh

Housner Spectrum Intensity

SIhc

Hidalgo Clough Spectrum Intensity

SInh

Nau & Hall Spectrum Intensity

Ic

Characteristic Intensity

Io

Arias Intensity

MMIobs

Observational MMI

MMIinst

Instrumental MMI

IM - Period and Duration

Duration (s)

Total Recorded Duration

Db5PctG (s)

Bracketed Duration of Record over 5%G

Du5PctG (s)

Uniform Duration of Record over 5%G

D5-95 (s)

Significant (Arias) Duration (D5-95)

D5 - 75 (s)

Significant (Arias) Duration (D5-75)

Tp (s)

Predominant Period

Tc (s)

Corner Period

Tm (s)

Mean Period

IM - Statistics and Correlation

XCorr12

Cross-Correlation of

Acceleration Components 1 & 2

XCorr13

Cross-Correlation of

Acceleration Components 1 & 3

XCorr23

Cross-Correlation of

Acceleration Components 2 & 3

XCorrMax

Max Cross-Correlation of

Acceleration Components 1, 2 & 3

PGV/PGA

Ratio of PGV to PGA

PGD/PGV (s)

Ratio PGD to PGV

PGD/PGA

Ratio of PGD to PGA

PGA*PGD/PGV^2

Ratio of (PGA*PGD) to PGV^2