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:
    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 = human assigned magnitude
    n = no magnitude
    dl = low-gain initial P-wave amplitude magnitude
    lr = reduced local 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