| mecid |
| Base Table | mec |
| Attribute Name | mecid |
| ColumnName | mecid |
| RoleName | |
| Definition | Mechanism identification. Each mechanism is assigned a unique positive integer which identifies it in the database |
| Note | Range: mecid > 0 |
| oridin |
| Base Table | mec |
| Attribute Name | orid |
| ColumnName | oridin |
| RoleName | oridin |
| Definition | Input origin. This attribute holds the origin identifier, orid, that points to the origin from which the mechanism was computed |
| Note | Range: oridin > 0 |
| oridout |
| Base Table | mec |
| Attribute Name | orid |
| ColumnName | oridout |
| RoleName | oridout |
| Definition | Output origin. This attribute holds the origin identifier, orid, that points to the origin computed from the mechanism |
| Note | Range: oridout > 0 |
| magid |
| Base Table | mec |
| Attribute Name | magid |
| 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 |
| commid |
| Base Table | mec |
| Attribute Name | commid |
| 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 |
| mechtype |
| Base Table | mec |
| Attribute Name | mechtype |
| ColumnName | mechtype |
| RoleName | |
| Definition | Mechanism/moment type |
| Note | Range: mechtype = {C | F | H | N | S} C = complete-waveform inversion F = first motion mechanism H = half duration of S-wave N = near-field inversion S = surface-wave inversion |
| mecalgo |
| Base Table | mec |
| Attribute Name | mecalgo |
| ColumnName | mecalgo |
| RoleName | |
| Definition | This attribute represents the algorithm used to compute the mechanism |
| Note | Range: Any free-format string up to 15 characters |
| scalar |
| Base Table | mec |
| Attribute Name | scalar |
| ColumnName | scalar |
| RoleName | |
| Definition | Seismic scalar moment |
| Note | Range: -10^32 < scalar < 10^32 Units: Dyne centimeters |
| erscalar |
| Base Table | mec |
| Attribute Name | erscalar |
| ColumnName | erscalar |
| RoleName | |
| Definition | Error in scalar moment. This is the standard deviation of the scalar moment |
| Note | Range: erscalar >= 0.0 Units: Dyne centimeters |
| tft |
| Base Table | mec |
| Attribute Name | tft |
| ColumnName | tft |
| RoleName | |
| Definition | Type of source time function |
| Note | Range: Any free-format string up to 8 characters |
| tfd |
| Base Table | mec |
| Attribute Name | tfd |
| ColumnName | tfd |
| RoleName | |
| Definition | Duration of the source time function |
| Note | Range: tfd > 0.0 Units: Seconds |
| mxx |
| Base Table | mec |
| Attribute Name | mxx |
| ColumnName | mxx |
| RoleName | |
| Definition | Moment tensor elements |
| Note | Range: -10^32 < mxx < 10^32 Units: Dyne centimeters |
| myy |
| Base Table | mec |
| Attribute Name | myy |
| ColumnName | myy |
| RoleName | |
| Definition | Moment tensor elements |
| Note | Range: -10^32 < myy < 10^32 Units: Dyne centimeters |
| mzz |
| Base Table | mec |
| Attribute Name | mzz |
| ColumnName | mzz |
| RoleName | |
| Definition | Moment tensor elements |
| Note | Range: -10^32 < mzz < 10^32 Units: Dyne centimeters |
| mxy |
| Base Table | mec |
| Attribute Name | mxy |
| ColumnName | mxy |
| RoleName | |
| Definition | Moment tensor elements |
| Note | Range: -10^32 < mxy < 10^32 Units: Dyne centimeters |
| mxz |
| Base Table | mec |
| Attribute Name | mxz |
| ColumnName | mxz |
| RoleName | |
| Definition | Moment tensor elements |
| Note | Range: -10^32 < mxz < 10^32 Units: Dyne centimeters |
| myz |
| Base Table | mec |
| Attribute Name | myz |
| ColumnName | myz |
| RoleName | |
| Definition | Moment tensor elements |
| Note | Range: -10^32 < myz < 10^32 Units: Dyne centimeters |
| smxx |
| Base Table | mec |
| Attribute Name | smxx |
| ColumnName | smxx |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smxx < 10^32 Units: Dyne centimeters |
| smyy |
| Base Table | mec |
| Attribute Name | smyy |
| ColumnName | smyy |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smyy < 10^32 Units: Dyne centimeters |
| smzz |
| Base Table | mec |
| Attribute Name | smzz |
| ColumnName | smzz |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smzz < 10^32 Units: Dyne centimeters |
| smxy |
| Base Table | mec |
| Attribute Name | smxy |
| ColumnName | smxy |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smxy < 10^32 Units: Dyne centimeters |
| smxz |
| Base Table | mec |
| Attribute Name | smxz |
| ColumnName | smxz |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smxz < 10^32 Units: Dyne centimeters |
| smyz |
| Base Table | mec |
| Attribute Name | smyz |
| ColumnName | smyz |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smyz < 10^32 Units: Dyne centimeters |
| srcduration |
| Base Table | mec |
| Attribute Name | srcduration |
| ColumnName | srcduration |
| RoleName | |
| Definition | Source half-duration |
| Note | Range: 0.0 < srcduration < 100.0 Units: Seconds |
| auth |
| Base Table | mec |
| Attribute Name | auth |
| 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 Table | mec |
| Attribute Name | subsource |
| 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 |
| strike1 |
| Base Table | mec |
| Attribute Name | strike1 |
| ColumnName | strike1 |
| RoleName | |
| Definition | Strike of fault plane 1 from the best double couple |
| Note | Range: 0 <= strike1 <= 360 Units: Degrees |
| dip1 |
| Base Table | mec |
| Attribute Name | dip1 |
| ColumnName | dip1 |
| RoleName | |
| Definition | Dip of fault plane 1 from the best double couple |
| Note | Range: -90 <= dip1 <= 90 Units: Degrees |
| rake1 |
| Base Table | mec |
| Attribute Name | rake1 |
| ColumnName | rake1 |
| RoleName | |
| Definition | Rake of fault plane 1 from the best double couple solution |
| Note | Range: -180 <= rake1 <= 180 Units: Degrees |
| strike2 |
| Base Table | mec |
| Attribute Name | strike2 |
| ColumnName | strike2 |
| RoleName | |
| Definition | Strike of fault plane 2 from the best double couple |
| Note | Range: 0 <= strike2 <= 360 Units: Degrees |
| dip2 |
| Base Table | mec |
| Attribute Name | dip2 |
| ColumnName | dip2 |
| RoleName | |
| Definition | Dip of fault plane 2 from the best double couple |
| Note | Range: -90 <= dip2 <= 90 Units: Degrees |
| rake2 |
| Base Table | mec |
| Attribute Name | rake2 |
| ColumnName | rake2 |
| RoleName | |
| Definition | Rake of fault plane 2 from the best double couple solution |
| Note | Range: -180 <= rake2 <= 180 Units: Degrees |
| unstrike1 |
| Base Table | mec |
| Attribute Name | unstrike1 |
| ColumnName | unstrike1 |
| RoleName | |
| Definition | Uncertainty in strike 1 |
| Note | Range: -180.0 <= unstrike1 <= 180.0 Units: Degrees |
| undip1 |
| Base Table | mec |
| Attribute Name | undip1 |
| ColumnName | undip1 |
| RoleName | |
| Definition | Uncertainty in dip 1 |
| Note | Range: -180.0 <= undip1 <= 180.0 Units: Degrees |
| unrake1 |
| Base Table | mec |
| Attribute Name | unrake1 |
| ColumnName | unrake1 |
| RoleName | |
| Definition | Uncertainty in rake 1 |
| Note | Range: -180.0 <= unrake1 <= 180.0 Units: Degrees |
| unstrike2 |
| Base Table | mec |
| Attribute Name | unstrike2 |
| ColumnName | unstrike2 |
| RoleName | |
| Definition | Uncertainty in strike 2 |
| Note | Range: -180.0 <= unstrike2 <= 180.0 Units: Degrees |
| undip2 |
| Base Table | mec |
| Attribute Name | undip2 |
| ColumnName | undip2 |
| RoleName | |
| Definition | Uncertainty in dip 2 |
| Note | Range: -180.0 <= undip2 <= 180.0 Units: Degrees |
| unrake2 |
| Base Table | mec |
| Attribute Name | unrake2 |
| ColumnName | unrake2 |
| RoleName | |
| Definition | Uncertainty in rake 2 |
| Note | Range: -180.0 <= unrake2 <= 180.0 Units: Degrees |
| eigenp |
| Base Table | mec |
| Attribute Name | eigenp |
| ColumnName | eigenp |
| RoleName | |
| Definition | Eigen value of compressional axis in the principal axes representation of the best double couple |
| Note |
| plungep |
| Base Table | mec |
| Attribute Name | plungep |
| ColumnName | plungep |
| RoleName | |
| Definition | Plunge of the compressional axis in the principal axes representation of the best double couple |
| Note | Range: 0 <= plungep <= 90 Units: Degrees |
| strikep |
| Base Table | mec |
| Attribute Name | strikep |
| ColumnName | strikep |
| RoleName | |
| Definition | Strike of compressional axis in the principal axes representation of the best double couple |
| Note | Range: 0 <= strikep <= 360 Units: Degrees |
| eigenn |
| Base Table | mec |
| Attribute Name | eigenn |
| ColumnName | eigenn |
| RoleName | |
| Definition | Eigen value of null axis in the principal axes representation of the best double couple |
| Note |
| plungen |
| Base Table | mec |
| Attribute Name | plungen |
| ColumnName | plungen |
| RoleName | |
| Definition | Plunge of the null axis in the principal axes representation of the best double couple |
| Note | Range: 0 <= plungen <= 90 Units: Degrees |
| striken |
| Base Table | mec |
| Attribute Name | striken |
| ColumnName | striken |
| RoleName | |
| Definition | Strike of null axis in the principal axes representation of the best double couple |
| Note | Range: 0 <= striken <= 360 Units: Degrees |
| eigent |
| Base Table | mec |
| Attribute Name | eigent |
| ColumnName | eigent |
| RoleName | |
| Definition | Eigen value of tension axis in the principal axes representation of the best double couple |
| Note |
| plunget |
| Base Table | mec |
| Attribute Name | plunget |
| ColumnName | plunget |
| RoleName | |
| Definition | Plunge of the tension axis in the principal axes representation of the best double couple |
| Note | Range: 0 <= plunget <= 90 Units: Degrees |
| striket |
| Base Table | mec |
| Attribute Name | striket |
| ColumnName | striket |
| RoleName | |
| Definition | Strike of tension axis in the principal axes representation of the best double couple |
| Note | Range: 0 <= striket <= 360 Units: Degrees |
| nsta |
| Base Table | mec |
| Attribute Name | nsta |
| ColumnName | nsta |
| RoleName | |
| Definition | This quantity is the number of observations with non-zero input weights used to compute the magnitude or mechanism |
| Note | Range: nsta > 0 |
| pvr |
| Base Table | mec |
| Attribute Name | pvr |
| ColumnName | pvr |
| RoleName | |
| Definition | Percent variance reduction |
| Note | Range: 0.0 <= pvr <= 100.0 |
| quality |
| Base Table | mec |
| Attribute Name | quality |
| 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 |
| pdc |
| Base Table | mec |
| Attribute Name | pdc |
| ColumnName | pdc |
| RoleName | |
| Definition | Percent double couple of the seismic moment tensor |
| Note | Range: 0 <= pdc <= 100 |
| pclvd |
| Base Table | mec |
| Attribute Name | pclvd |
| ColumnName | pclvd |
| RoleName | |
| Definition | Percent compensated linear vector dipole of the seismic moment tensor |
| Note | Range: 0 <= pclvd <= 100 |
| piso |
| Base Table | mec |
| Attribute Name | piso |
| ColumnName | piso |
| RoleName | |
| Definition | Percent isotropic of the seismic moment tensor |
| Note | Range: 0 <= piso <= 100 |
| datetime |
| Base Table | mec |
| Attribute Name | datetime |
| ColumnName | datetime |
| RoleName | |
| 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 |
| rflag |
| Base Table | mec |
| Attribute Name | rflag |
| 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 Table | mec |
| Attribute Name | lddate |
| ColumnName | lddate |
| RoleName | |
| 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 |