| magid |
| Base Entity | netmag |
| Attribute Name | magid |
| Logical Rolename | |
| ColumnName | magid |
| RoleName | |
| Definition | Magnitude identifier. This key is used to identify a magnitude in the Netmag relation. It is required for every magnitude |
| Note | Range: magid > 0 |
| orid |
| Base Entity | netmag |
| Attribute Name | orid |
| Logical Rolename | |
| ColumnName | orid |
| RoleName | |
| Definition | Origin identification. Each origin is assigned a unique positive integer which identifies it in the database. The orid is used to identify one of the many hypotheses of the actual location of the event |
| Note | Range: orid > 0 |
| commid |
| Base Entity | netmag |
| Attribute Name | commid |
| Logical Rolename | |
| ColumnName | commid |
| RoleName | |
| 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 |
| magnitude |
| Base Entity | netmag |
| Attribute Name | magnitude |
| Logical Rolename | |
| ColumnName | magnitude |
| RoleName | |
| Definition | Magnitude. This gives the magnitude value of the type indicated by magtype |
| Note | Range: -10.0 < magnitude < 10.0 Units: Magnitude units |
| magtype |
| Base Entity | netmag |
| Attribute Name | magtype |
| Logical Rolename | |
| ColumnName | magtype |
| RoleName | |
| Definition | Magnitude type. This character string is used to specify the type of the magnitude measure |
| Note | Range: magtype = {p | a | b | e | l | l1 | l2 | lg | c | s | w | z | B | un | d | h | n | dl}
p = initial P-wave amplitude magnitude
a = primary amplitude magnitude (Jerry Eaton's XMAG)
b = body-wave magnitude
e = energy magnitude
l = local magnitude
l1 = traditional UCB local magnitude
l2 = network UCB local magnitude
lg = Lg magnitude
c = primary coda magnitude
s = Ms - surface wave magnitude
w = moment magnitude
z = low gain (Z component) magnitude of Hirshorn and Lindh (1989)
B = magnitude estimated from 14-kg Benioff's
un = unknown magnitude type
d = duration magnitude
h = helicorder magnitude (CIT, short-period Benioff)
n = no magnitude
dl = low-gain initial P-wave amplitude magnitude |
| auth |
| Base Entity | netmag |
| Attribute Name | auth |
| Logical Rolename | |
| ColumnName | auth |
| RoleName | |
| 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 | netmag |
| Attribute Name | subsource |
| Logical Rolename | |
| ColumnName | subsource |
| RoleName | |
| 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 |
| magalgo |
| Base Entity | netmag |
| Attribute Name | magalgo |
| Logical Rolename | |
| ColumnName | magalgo |
| RoleName | |
| Definition | This attribute represents the algorithm used to compute the magnitude |
| Note | Range: Any free-format string up to 15 characters |
| nsta |
| Base Entity | netmag |
| Attribute Name | nsta |
| Logical Rolename | |
| ColumnName | nsta |
| RoleName | |
| Definition | This quantity is the number of stations with non-zero input weights used to compute the magnitude |
| Note | Range: nsta >= 0 |
| nobs |
| Base Entity | netmag |
| Attribute Name | nobs |
| Logical Rolename | |
| ColumnName | nobs |
| RoleName | |
| Definition | This quantity is the number of observations with non-zero input weights used to compute the magnitude |
| Note | Range: nobs >= 0 |
| uncertainty |
| Base Entity | netmag |
| Attribute Name | uncertainty |
| Logical Rolename | |
| ColumnName | uncertainty |
| RoleName | |
| Definition | Magnitude uncertainty. Median of the absolute values of the channel magnitude residual deviations from the channel magnitude's median, the summary magnitude. |
| Note | Range: uncertainty >= 0.0 |
| gap |
| Base Entity | netmag |
| Attribute Name | gap |
| Logical Rolename | |
| ColumnName | gap |
| RoleName | |
| Definition | Gap in azimuthal coverage |
| Note | Range: 0.0 <= gap <= 360.0 Units: Degrees |
| distance |
| Base Entity | netmag |
| Attribute Name | distance |
| Logical Rolename | |
| ColumnName | distance |
| RoleName | |
| Definition | Distance from the origin to the nearest station |
| Note | Range: distance >= 0.0 Units: Kilometers |
| quality |
| Base Entity | netmag |
| Attribute Name | quality |
| Logical Rolename | |
| ColumnName | quality |
| RoleName | |
| 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 |
| rflag |
| Base Entity | netmag |
| Attribute Name | rflag |
| Logical Rolename | |
| ColumnName | rflag |
| RoleName | |
| 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 | netmag |
| Attribute Name | lddate |
| Logical Rolename | |
| ColumnName | lddate |
| RoleName | |
| Definition | Load date. Date and time that the record was created, 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 |