| Attribute/Logical Rolename |
Domain |
Datatype |
NULL |
Definition |
ampid |
|
NUMERIC(15, 0) |
NO |
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 |
| commid |
|
NUMERIC(15, 0) |
YES |
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 |
| datetime |
|
NUMERIC(25, 10) |
YES |
The date of associated with information in the record, in true epoch format
* In the current real time system, we know the exact amplitude time as well as the window.
Therefore, we can set values for the datetime, wstart & duration fields.
* In the case where we know only the time of the amplitude but not the window, we set:
datetime = [AMPLITUDE TIME]
wstart = [AMPLITUDE TIME]
duration = 0
* In the case where we do not know the amplitude time nor the window, we set:
datetime = NULL
wstart = [ORIGIN TIME]
duration = NULL
|
| sta |
|
VARCHAR(6) |
NO |
Station code. This is the common code-name of a seismic observatory. Generally only three or four characters are used |
| net |
|
VARCHAR(8) |
YES |
Unique network identifier. This character string is the name of a seismic network |
| auth |
|
VARCHAR(15) |
NO |
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 |
| subsource |
|
VARCHAR(8) |
YES |
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 |
| channel |
|
VARCHAR(8) |
YES |
Channel name |
| channelsrc |
|
VARCHAR(8) |
YES |
Domain for channel. This specifies what naming convention is used for the channel name (i.e. SEED, USGS, etc.) |
| seedchan |
|
VARCHAR(3) |
YES |
SEED channel name. The first character denotes the band code, the second for the instrument code and the third represents the component code |
| location |
|
VARCHAR(2) |
YES |
Describes the individual sites on an array station, operated by the same network operator |
| iphase |
|
VARCHAR(8) |
YES |
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 |
| amplitude |
|
DOUBLE PRECISION |
NO |
Amplitude in appropriate units for type |
| amptype |
|
VARCHAR(8) |
YES |
Amplitude type |
| units |
|
VARCHAR(4) |
NO |
Units of amplitude |
| ampmeas |
|
VARCHAR(1) |
YES |
Amplitude measure |
| eramp |
|
NUMERIC(5, 3) |
YES |
Uncertainty in amplitude measurement |
| flagamp |
|
VARCHAR(4) |
YES |
This attribute is a flag to indicate whether amplitude is over P packet, S packet, entire waveform, etc |
| per |
|
NUMERIC(10, 4) |
YES |
Signal period. This attribute is the period of the signal described by the amplitude record |
| snr |
|
DOUBLE PRECISION |
YES |
Signal-to-noise ratio. This is an estimate of the signal relative to that of the noise immediately preceding it |
| tau |
|
NUMERIC(9, 4) |
YES |
Coda duration (F-P time) |
| quality |
|
NUMERIC(2, 1) |
YES |
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 |
| rflag |
|
VARCHAR(2) |
YES |
This flag describes whether an observation was generated automatically, by a human, or has been finalized |
| cflag |
|
VARCHAR(2) |
YES |
This flag indicates whether the amplitude value is below noise, on scale or clipped |
| wstart |
|
DOUBLE PRECISION |
NO |
Start of time window of amplitude measurement
* In the current real time system, we know the exact amplitude time as well as the window.
Therefore, we can set values for the datetime, wstart & duration fields.
* In the case where we know only the time of the amplitude but not the window, we set:
datetime = [AMPLITUDE TIME]
wstart = [AMPLITUDE TIME]
duration = 0
* In the case where we do not know the amplitude time nor the window, we set:
datetime = NULL
wstart = [ORIGIN TIME]
duration = NULL
|
| duration |
|
DOUBLE PRECISION |
YES |
Duration of amplitude reading
* In the current real time system, we know the exact amplitude time as well as the window.
Therefore, we can set values for the datetime, wstart & duration fields.
* In the case where we know only the time of the amplitude but not the window, we set:
datetime = [AMPLITUDE TIME]
wstart = [AMPLITUDE TIME]
duration = 0
* In the case where we do not know the amplitude time nor the window, we set:
datetime = NULL
wstart = [ORIGIN TIME]
duration = NULL
|
| lddate |
|
DATE |
YES |
Load date. Date and time that the record was created, in Oracle date datatype |
| Check Constraint Name |
CheckConstraint |
| amp01 |
ampid > 0 |
| amp02 |
amplitude > 0 |
| amp03 |
ampmeas in ('0','1') |
| amp04 |
amptype in ('C','WA','WAS','WASF','PGA','PGV','PGD','WAC','WAU','IV2','SP.3','SP1.0','SP3.0','ML100','ME100','EGY','M0') |
| amp06 |
eramp >= 0.0 |
| amp07 |
flagamp in ('P','S','R','PP','ALL','SUR') |
| amp08 |
per > 0.0 |
| amp09 |
tau > 0.0 |
| amp10 |
units in ('c','s','mm','cm','m','ms','mss','cms','cmss','mms','mmss','mc','nm','e','cmcms','none','dycm') |
| amp11 |
quality >= 0.0 and quality <= 1.0 |
| amp12 |
rflag in ('a','h','f','A','H','F') |
| amp13 |
cflag in ('bn', 'os','cl','BN','OS','CL') |