| arid |
| Base Entity | arrival |
| Attribute Name | arid |
| Logical Rolename | arid |
| ColumnName | arid |
| RoleName | arid |
| Definition | Arrival identifier. Each arrival is assigned a unique positive integer identifying it. This number is used in the AssocArO relation along with the origin identifier to link Arrival and Origin |
| Note | Range: arid > 0 |
| commid |
| Base Entity | arrival |
| 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 |
| datetime |
| Base Entity | arrival |
| 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 | arrival |
| 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 | arrival |
| 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 | arrival |
| 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 | arrival |
| Attribute Name | subsource |
| Logical Rolename | subsource |
| ColumnName | subsource |
| RoleName | subsource |
| Definition | A second identifier to specify a unique source within the domain specified by auth |
| Note | Range: Any free-format string up to 8 characters |
| channel |
| Base Entity | arrival |
| 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 | arrival |
| 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 | arrival |
| 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 | arrival |
| 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 | arrival |
| 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 |
| qual |
| Base Entity | arrival |
| Attribute Name | qual |
| Logical Rolename | qual |
| ColumnName | qual |
| RoleName | qual |
| Definition | Onset quality. This single-character flag is used to denote the sharpness of the onset of a seismic phase. This attribute does not denote the timing accuracy |
| Note | Range: qual = {i | e | w} i = impulsive e = emergent w = weak |
| clockqual |
| Base Entity | arrival |
| Attribute Name | clockqual |
| Logical Rolename | clockqual |
| ColumnName | clockqual |
| RoleName | clockqual |
| Definition | This field describes whether the clock quality associated with a particular arrival is known, and if so, is good or bad |
| Note | Range: clockqual = {U | G | B} U = unknown G = good B = bad |
| clockcorr |
| Base Entity | arrival |
| Attribute Name | clockcorr |
| Logical Rolename | clockcorr |
| ColumnName | clockcorr |
| RoleName | clockcorr |
| Definition | This field indicates the amount of time to add to the arrival time if clock correction is known |
| Note | Units: Microseconds |
| ccset |
| Base Entity | arrival |
| Attribute Name | ccset |
| Logical Rolename | ccset |
| ColumnName | ccset |
| RoleName | ccset |
| Definition | This field describes whether the clock correction has been added or applied to the arrivals in computing a hypocenter solution |
| Note | Range: ccset in {0 | 1} 0 = no 1 = yes |
| fm |
| Base Entity | arrival |
| Attribute Name | fm |
| Logical Rolename | fm |
| ColumnName | fm |
| RoleName | fm |
| Definition | First motion. This is a two-character indication of first motion. The first character describes first motion seen on short-period channels and the second holds for long-period instruments. Compression (dilation) on a short-period sensor is denoted by c(d) and compression (dilation) on a long-period sensor is denoted by u(r). Empty character positions will be indicated by dots (e.g., ".r") |
| Note | Range: All two-letter permutations of (c | d | .} U {u | r | .} |
| ema |
| Base Entity | arrival |
| Attribute Name | ema |
| Logical Rolename | ema |
| ColumnName | ema |
| RoleName | ema |
| Definition | Emergence angle. This attribute is the emergence angle of an arrival, as observed at a three-component station or array. The value increases from the vertical direction towards the horizontal |
| Note | Range: 0.0 <= ema <= 90.0 Units: Degrees |
| azimuth |
| Base Entity | arrival |
| Attribute Name | azimuth |
| Logical Rolename | azimuth |
| ColumnName | azimuth |
| RoleName | azimuth |
| Definition | Observed azimuth. This is the estimated station-to-event azimuth measured clockwise from north |
| Note | Range: 0.0 <= azimuth <= 360.0 Units: Degrees |
| slow |
| Base Entity | arrival |
| Attribute Name | slow |
| Logical Rolename | slow |
| ColumnName | slow |
| RoleName | slow |
| Definition | Observed slowness. This is the observed slowness of a wave as it sweeps across an array |
| Note | Range: slow >= 0.0 Units: Seconds/kilometer |
| deltim |
| Base Entity | arrival |
| Attribute Name | deltim |
| Logical Rolename | deltim |
| ColumnName | deltim |
| RoleName | deltim |
| Definition | Arrival time uncertainty. This attribute gives the standard deviation of a detection time |
| Note | Range: deltim ³ 0.0 Units: Seconds |
| delinc |
| Base Entity | arrival |
| Attribute Name | delinc |
| Logical Rolename | delinc |
| ColumnName | delinc |
| RoleName | delinc |
| Definition | Uncertainty in the angle. This attribute gives the standard deviation of the angle of emergence |
| Note | Range: delinc ³ 0.0 Units: Degrees |
| delaz |
| Base Entity | arrival |
| Attribute Name | delaz |
| Logical Rolename | delaz |
| ColumnName | delaz |
| RoleName | delaz |
| Definition | Uncertainty in the azimuth. This attribute gives the standard deviation of the azimuth of a signal |
| Note | Range: delaz > 0.0 Units: Degrees |
| delslo |
| Base Entity | arrival |
| Attribute Name | delslo |
| Logical Rolename | delslo |
| ColumnName | delslo |
| RoleName | delslo |
| Definition | Uncertainty in slowness. This attribute gives the standard deviation of the slowness of a signal |
| Note | Range: delslo > 0.0 Units: Seconds/Kilometers |
| quality |
| Base Entity | arrival |
| Attribute Name | quality |
| Logical Rolename | quality |
| ColumnName | quality |
| RoleName | quality |
| Definition | This attribute denotes the quality of an origin, an arrival, or a mechanism. 1.0 = good, 0.0 = bad |
| Note | Range: 0.0 <= quality <= 1.0 |
| snr |
| Base Entity | arrival |
| 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 |
| rflag |
| Base Entity | arrival |
| 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 |
| lddate |
| Base Entity | arrival |
| 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 |