commid

Base Entity | amp
Attribute Name | commid
Logical Rolename | commid
ColumnName | commid
RoleName | commid
Definition | Comment identification. This is a key used to point to free-form comments entered in the Remark relation. These comments store additional information about a tuple in another relation. Within the Remark relation, there may be many tuples with the same commid and different lineno, but the same commid will appear in only one other tuple among the rest of the relations in the database
Note | Range: commid > 0

ampid

Base Entity | amp
Attribute Name | ampid
Logical Rolename | ampid
ColumnName | ampid
RoleName | ampid
Definition | Amplitude identification. Each amplitude is assigned a unique positive integer identifying it. This number is used in the AssocAmO relation along with the origin identifier to link Amp and Origin. This number is used also in the AssocAmM relation along with the magnitude identifier to link Amp and Netmag
Note | Range: ampid > 0

datetime

Base Entity | amp
Attribute Name | datetime
Logical Rolename | datetime
ColumnName | datetime
RoleName | datetime
Definition | The date of associated with information in the record, in true epoch format
Note | Range: Any valid float. datetime = 0.0 on January 01, 1970 at 00:00:00.0000 Units: Seconds

sta

Base Entity | amp
Attribute Name | sta
Logical Rolename | sta
ColumnName | sta
RoleName | sta
Definition | Station code. This is the common code-name of a seismic observatory. Generally only three or four characters are used
Note | Range: Any free-format string up to 6 characters

net

Base Entity | amp
Attribute Name | net
Logical Rolename | net
ColumnName | net
RoleName | net
Definition | Unique network identifier. This character string is the name of a seismic network
Note | Range: Any free-format string up to 8 characters. If available, use the two character FDSN code for the network

auth

Base Entity | amp
Attribute Name | auth
Logical Rolename | auth
ColumnName | auth
RoleName | auth
Definition | The auth field specifies the source of the information. This may be a network identifier (FDSN or otherwise), or any other string indicating the source of the information in the record
Note | Range: Any free-format string up to 15 characters

subsource

Base Entity | amp
Attribute Name | subsource
Logical Rolename | subsource
ColumnName | subsource
RoleName | subsource
Definition | A second identifier to specify the system or process that derived the data. e.g., the origin's AUTH is CI, but the subsource (the solution) was computed by JIGGLE
Note | Range: Any free-format string up to 8 characters

channel

Base Entity | amp
Attribute Name | channel
Logical Rolename | channel
ColumnName | channel
RoleName | channel
Definition | Channel name
Note | Range: Any valid channel name, which may be network-specific. Networks using SEED channel names should use the same value for channel and seedchan

channelsrc

Base Entity | amp
Attribute Name | channelsrc
Logical Rolename | channelsrc
ColumnName | channelsrc
RoleName | channelsrc
Definition | Domain for channel. This specifies what naming convention is used for the channel name (i.e. SEED, USGS, etc.)
Note | Range: Any free-format string up to 8 characters long

seedchan

Base Entity | amp
Attribute Name | seedchan
Logical Rolename | seedchan
ColumnName | seedchan
RoleName | seedchan
Definition | SEED channel name. The first character denotes the band code, the second for the instrument code and the third represents the component code
Note | Range: seedchan = {E | S | H | B | M | L | V | U | R} U {A | B | D | F | G | H | I | K | L | M | P | R | S | V | T | W} U {Z | N | E | A | B | C | T | R | 1 | 2 | 3 | U | V | W} Band code: Sample rate (Hz) Corner period (sec) E = extremely short period ³ 80 < 10 S = short period ³ 10 to < 80 < 10 H = high broad band ³ 80 ³ 10 B = broad band ³ 10 to < 80 ³ 10 M = mid period > 1 to < 10 L = long period ~ 1 V = very long period ~ 0.1 U = ultra long period ~ 0.01 R = extremely long period ~ 0.001 Instrument code: A = tiltmeter B = creepmeter D = pressure F = magnetometer G = gravimeter/accelerometer H = high gain seismometer I = humidity K = temperature L = low gain seismometer M = mass position seismometer P = geophone R = rainfall S = linear strainmeter V = volumetric strain T = tide meter W = wind Component code: N = north-south E = east-west T = transverse R = radial Z = vertical A, B, C = triaxial 1, 2, 3 = orthogonal components but non-traditional orientations U, V, W = optional components

location

Base Entity | amp
Attribute Name | location
Logical Rolename | location
ColumnName | location
RoleName | location
Definition | Describes the individual sites on an array station, operated by the same network operator
Note | Range: Any free-format string up to 2 characters long

iphase

Base Entity | amp
Attribute Name | iphase
Logical Rolename | iphase
ColumnName | iphase
RoleName | iphase
Definition | Reported phase. This eight-character field holds the name initially given to a seismic phase. Standard seismological labels for the types of signals (or phases) are used (e.g., P, PKP, PcP, pP). Both upper and lower case letters are available and should be used when appropriate, for example, pP or PcP
Note | Range: Any free-format string up to 8 characters

amplitude

Base Entity | amp
Attribute Name | amplitude
Logical Rolename | amplitude
ColumnName | amplitude
RoleName | amplitude
Definition | Amplitude in appropriate units for type
Note | Range: amplitude > 0.0

amptype

Base Entity | amp
Attribute Name | amptype
Logical Rolename | amptype
ColumnName | amptype
RoleName | amptype
Definition | Amplitude type
Note | Range: amptype = {WA | WAS | PGA | PGV | PGD | WAC | WAU | IV2 | SP.3 | SP1.0 | SP3.0 | ML100 | ME100 | EGY} WA = Wood-Anderson photographic WAS = Wood-Anderson synthetic PGA = peak ground acceleration PGV = peak ground velocity PGD = peak ground displacement WAC = Wood-Anderson corrected WAU = Wood-Anderson uncorrected IV2 = integral of velocity squared SP.3 = spectral peak SP1.0 = spectral peak SP3.0 = spectral peak ML100 = local magnitude ME100 = energy magnitude EGY = energy

units

Base Entity | amp
Attribute Name | units
Logical Rolename | units
ColumnName | units
RoleName | units
Definition | Units of amplitude
Note | Range: units Î {c | s | mm | cm | m | ms | mss | cms | cmss | mms | mmss | mc | nm | e | iovs | spa } c = counts s = seconds mm = millimeters cm = centimeters m = meters ms = meters per second mss = meters per second per second cms = centimeters per second cmss = centimeters per second per second mms = millimeters per second mmss = millimeters per second per second mc = microns nm = nanometers e = ergs iovs = integral of velocity squared spa = spectral peak amplitude

ampmeas

Base Entity | amp
Attribute Name | ampmeas
Logical Rolename | ampmeas
ColumnName | ampmeas
RoleName | ampmeas
Definition | Amplitude measure
Note | Range: ampmeas = {0 | 1} 0 = peak-to-peak 1 = zero-to-peak

eramp

Base Entity | amp
Attribute Name | eramp
Logical Rolename | eramp
ColumnName | eramp
RoleName | eramp
Definition | Uncertainty in amplitude measurement
Note | Range: eramp >= 0.0

flagamp

Base Entity | amp
Attribute Name | flagamp
Logical Rolename | flagamp
ColumnName | flagamp
RoleName | flagamp
Definition | This attribute is a flag to indicate whether amplitude is over P packet, S packet, entire waveform, etc
Note | Range: flagamp = {SUR | P | S | ALL} SUR = surface wave P = P packet S = S packet ALL = entire waveform

per

Base Entity | amp
Attribute Name | per
Logical Rolename | per
ColumnName | per
RoleName | per
Definition | Signal period. This attribute is the period of the signal described by the amplitude record
Note | Range: per > 0.0 Units: Seconds

snr

Base Entity | amp
Attribute Name | snr
Logical Rolename | snr
ColumnName | snr
RoleName | snr
Definition | Signal-to-noise ratio. This is an estimate of the signal relative to that of the noise immediately preceding it
Note | Range: snr > 0.0

tau

Base Entity | amp
Attribute Name | tau
Logical Rolename | tau
ColumnName | tau
RoleName | tau
Definition | Coda duration (F-P time)
Note | Range: tau > 0.0 Units: Seconds

quality

Base Entity | amp
Attribute Name | quality
Logical Rolename | quality
ColumnName | quality
RoleName | quality
Definition | This attribute describes the completeness of the time window of data. A complete time window is 1.0, an incomplete time window is 0.0. If an incomplete time window has been human-reviewed and the analyst is confident that the peak amplitude was recorded and properly computed despite the presence of data gaps, the value is set to 0.5 to indicate the window contains data gaps, but is usable
Note | Range: 0.0 <= quality <= 1.0

rflag

Base Entity | amp
Attribute Name | rflag
Logical Rolename | rflag
ColumnName | rflag
RoleName | rflag
Definition | This flag describes whether an observation was generated automatically, by a human, or has been finalized
Note | Range: rflag = {A | H | F} A = automatic H = reviewed by human F = finalized

cflag

Base Entity | amp
Attribute Name | cflag
Logical Rolename | cflag
ColumnName | cflag
RoleName | cflag
Definition | This flag indicates whether the amplitude value is below noise, on scale or clipped
Note | Range: cflag in { BN | OS | CL} BN = below noise OS = on scale CL = clipped

wstart

Base Entity | amp
Attribute Name | wstart
Logical Rolename | wstart
ColumnName | wstart
RoleName | wstart
Definition | Start of time window of amplitude measurement
Note | Range: Any valid float. wstart = 0.0 on January 01, 1970 at 00:00:00.0000 Units: Seconds

duration

Base Entity | amp
Attribute Name | duration
Logical Rolename | duration
ColumnName | duration
RoleName | duration
Definition | Duration of amplitude reading
Note | Range: duration > 0.0 Units: Seconds

lddate

Base Entity | amp
Attribute Name | lddate
Logical Rolename | lddate
ColumnName | lddate
RoleName | lddate
Definition | Load date. Date and time that the record was created or last modified, in Oracle date datatype
Note | Range: Any valid date between January 01, 4712 BC and January 01, 4712 AD Units: YYYY/MM/DD HH24:MI:SS