| mecid |
| Base Entity | mec |
| Attribute Name | mecid |
| Logical Rolename | |
| 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 Entity | mec |
| Attribute Name | orid |
| Logical Rolename | oridin |
| 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 Entity | mec |
| Attribute Name | orid |
| Logical Rolename | oridout |
| 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 Entity | mec |
| 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 |
| commid |
| Base Entity | mec |
| 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 |
| mechtype |
| Base Entity | mec |
| Attribute Name | mechtype |
| Logical Rolename | |
| 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 Entity | mec |
| Attribute Name | mecalgo |
| Logical Rolename | |
| ColumnName | mecalgo |
| RoleName | |
| Definition | This attribute represents the algorithm used to compute the mechanism (TDMT,TMTS=Dreger's code; FPFIT=fpfit; SMTINV=Pasyanos code) |
| Note | Range: Any free-format string up to 15 characters |
| scalar |
| Base Entity | mec |
| Attribute Name | scalar |
| Logical Rolename | |
| ColumnName | scalar |
| RoleName | |
| Definition | Seismic scalar moment (no value stored for fpfit) |
| Note | Range: -10^32 < scalar < 10^32 Units: Dyne centimeters |
| erscalar |
| Base Entity | mec |
| Attribute Name | erscalar |
| Logical Rolename | |
| 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 Entity | mec |
| Attribute Name | tft |
| Logical Rolename | |
| ColumnName | tft |
| RoleName | |
| Definition | Type of source time function. Used to specify if time function and source half-duration are assumed, derived, or determined |
| Note | Range: Any free-format string up to 8 characters |
| tfd |
| Base Entity | mec |
| Attribute Name | tfd |
| Logical Rolename | |
| ColumnName | tfd |
| RoleName | |
| Definition | Duration of the source time function |
| Note | Range: tfd > 0.0 Units: Seconds |
| mxx |
| Base Entity | mec |
| Attribute Name | mxx |
| Logical Rolename | |
| ColumnName | mxx |
| RoleName | |
| Definition | Moment tensor elements. Given in Aki convention |
| Note | Range: -10^32 < mxx < 10^32 Units: Dyne centimeters |
| myy |
| Base Entity | mec |
| Attribute Name | myy |
| Logical Rolename | |
| ColumnName | myy |
| RoleName | |
| Definition | Moment tensor elements. Given in Aki convention |
| Note | Range: -10^32 < myy < 10^32 Units: Dyne centimeters |
| mzz |
| Base Entity | mec |
| Attribute Name | mzz |
| Logical Rolename | |
| ColumnName | mzz |
| RoleName | |
| Definition | Moment tensor elements. Given in Aki convention |
| Note | Range: -10^32 < mzz < 10^32 Units: Dyne centimeters |
| mxy |
| Base Entity | mec |
| Attribute Name | mxy |
| Logical Rolename | |
| ColumnName | mxy |
| RoleName | |
| Definition | Moment tensor elements. Given in Aki convention |
| Note | Range: -10^32 < mxy < 10^32 Units: Dyne centimeters |
| mxz |
| Base Entity | mec |
| Attribute Name | mxz |
| Logical Rolename | |
| ColumnName | mxz |
| RoleName | |
| Definition | Moment tensor elements. Given in Aki convention |
| Note | Range: -10^32 < mxz < 10^32 Units: Dyne centimeters |
| myz |
| Base Entity | mec |
| Attribute Name | myz |
| Logical Rolename | |
| ColumnName | myz |
| RoleName | |
| Definition | Moment tensor elements. Given in Aki convention |
| Note | Range: -10^32 < myz < 10^32 Units: Dyne centimeters |
| smxx |
| Base Entity | mec |
| Attribute Name | smxx |
| Logical Rolename | |
| ColumnName | smxx |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smxx < 10^32 Units: Dyne centimeters |
| smyy |
| Base Entity | mec |
| Attribute Name | smyy |
| Logical Rolename | |
| ColumnName | smyy |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smyy < 10^32 Units: Dyne centimeters |
| smzz |
| Base Entity | mec |
| Attribute Name | smzz |
| Logical Rolename | |
| ColumnName | smzz |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smzz < 10^32 Units: Dyne centimeters |
| smxy |
| Base Entity | mec |
| Attribute Name | smxy |
| Logical Rolename | |
| ColumnName | smxy |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smxy < 10^32 Units: Dyne centimeters |
| smxz |
| Base Entity | mec |
| Attribute Name | smxz |
| Logical Rolename | |
| ColumnName | smxz |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smxz < 10^32 Units: Dyne centimeters |
| smyz |
| Base Entity | mec |
| Attribute Name | smyz |
| Logical Rolename | |
| ColumnName | smyz |
| RoleName | |
| Definition | Uncertainties in moment tensor elements |
| Note | Range: -10^32 < smyz < 10^32 Units: Dyne centimeters |
| srcduration |
| Base Entity | mec |
| Attribute Name | srcduration |
| Logical Rolename | |
| ColumnName | srcduration |
| RoleName | |
| Definition | Source half-duration |
| Note | Range: 0.0 < srcduration < 100.0 Units: Seconds |
| auth |
| Base Entity | mec |
| 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 | mec |
| 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 |
| strike1 |
| Base Entity | mec |
| Attribute Name | strike1 |
| Logical Rolename | |
| ColumnName | strike1 |
| RoleName | |
| Definition | Strike of fault plane 1 from the best double couple |
| Note | Range: 0 <= strike1 <= 360 Units: Degrees |
| dip1 |
| Base Entity | mec |
| Attribute Name | dip1 |
| Logical Rolename | |
| ColumnName | dip1 |
| RoleName | |
| Definition | Dip of fault plane 1 from the best double couple |
| Note | Range: -90 <= dip1 <= 90 Units: Degrees |
| rake1 |
| Base Entity | mec |
| Attribute Name | rake1 |
| Logical Rolename | |
| ColumnName | rake1 |
| RoleName | |
| Definition | Rake of fault plane 1 from the best double couple solution |
| Note | Range: -180 <= rake1 <= 180 Units: Degrees |
| strike2 |
| Base Entity | mec |
| Attribute Name | strike2 |
| Logical Rolename | |
| ColumnName | strike2 |
| RoleName | |
| Definition | Strike of fault plane 2 from the best double couple |
| Note | Range: 0 <= strike2 <= 360 Units: Degrees |
| dip2 |
| Base Entity | mec |
| Attribute Name | dip2 |
| Logical Rolename | |
| ColumnName | dip2 |
| RoleName | |
| Definition | Dip of fault plane 2 from the best double couple |
| Note | Range: -90 <= dip2 <= 90 Units: Degrees |
| rake2 |
| Base Entity | mec |
| Attribute Name | rake2 |
| Logical Rolename | |
| ColumnName | rake2 |
| RoleName | |
| Definition | Rake of fault plane 2 from the best double couple solution |
| Note | Range: -180 <= rake2 <= 180 Units: Degrees |
| unstrike1 |
| Base Entity | mec |
| Attribute Name | unstrike1 |
| Logical Rolename | |
| ColumnName | unstrike1 |
| RoleName | |
| Definition | Uncertainty in strike 1 |
| Note | Range: -180.0 <= unstrike1 <= 180.0 Units: Degrees |
| undip1 |
| Base Entity | mec |
| Attribute Name | undip1 |
| Logical Rolename | |
| ColumnName | undip1 |
| RoleName | |
| Definition | Uncertainty in dip 1 |
| Note | Range: -180.0 <= undip1 <= 180.0 Units: Degrees |
| unrake1 |
| Base Entity | mec |
| Attribute Name | unrake1 |
| Logical Rolename | |
| ColumnName | unrake1 |
| RoleName | |
| Definition | Uncertainty in rake 1 |
| Note | Range: -180.0 <= unrake1 <= 180.0 Units: Degrees |
| unstrike2 |
| Base Entity | mec |
| Attribute Name | unstrike2 |
| Logical Rolename | |
| ColumnName | unstrike2 |
| RoleName | |
| Definition | Uncertainty in strike 2 |
| Note | Range: -180.0 <= unstrike2 <= 180.0 Units: Degrees |
| undip2 |
| Base Entity | mec |
| Attribute Name | undip2 |
| Logical Rolename | |
| ColumnName | undip2 |
| RoleName | |
| Definition | Uncertainty in dip 2 |
| Note | Range: -180.0 <= undip2 <= 180.0 Units: Degrees |
| unrake2 |
| Base Entity | mec |
| Attribute Name | unrake2 |
| Logical Rolename | |
| ColumnName | unrake2 |
| RoleName | |
| Definition | Uncertainty in rake 2 |
| Note | Range: -180.0 <= unrake2 <= 180.0 Units: Degrees |
| eigenp |
| Base Entity | mec |
| Attribute Name | eigenp |
| Logical Rolename | |
| ColumnName | eigenp |
| RoleName | |
| Definition | Eigen value of compressional axis in the principal axes representation of the best double couple |
| Note |
| plungep |
| Base Entity | mec |
| Attribute Name | plungep |
| Logical Rolename | |
| 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 Entity | mec |
| Attribute Name | strikep |
| Logical Rolename | |
| 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 Entity | mec |
| Attribute Name | eigenn |
| Logical Rolename | |
| ColumnName | eigenn |
| RoleName | |
| Definition | Eigen value of null axis in the principal axes representation of the best double couple |
| Note |
| plungen |
| Base Entity | mec |
| Attribute Name | plungen |
| Logical Rolename | |
| 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 Entity | mec |
| Attribute Name | striken |
| Logical Rolename | |
| 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 Entity | mec |
| Attribute Name | eigent |
| Logical Rolename | |
| ColumnName | eigent |
| RoleName | |
| Definition | Eigen value of tension axis in the principal axes representation of the best double couple |
| Note |
| plunget |
| Base Entity | mec |
| Attribute Name | plunget |
| Logical Rolename | |
| 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 Entity | mec |
| Attribute Name | striket |
| Logical Rolename | |
| 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 Entity | mec |
| Attribute Name | nsta |
| Logical Rolename | |
| ColumnName | nsta |
| RoleName | |
| Definition | This quantity is the number of observations with non-zero input weights used to compute the mechanism. For CW=nsta, for FPFIT=nPobs, for HASH=nobs |
| Note | Range: nsta > 0 |
| pvr |
| Base Entity | mec |
| Attribute Name | pvr |
| Logical Rolename | |
| ColumnName | pvr |
| RoleName | |
| Definition | Goodness of fit. For TDMT this is percent variance reduction; for FPFIT this is (1-misfit)*100 |
| Note | Range: 0.0 <= pvr <= 100.0 |
| quality |
| Base Entity | mec |
| 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 |
| pdc |
| Base Entity | mec |
| Attribute Name | pdc |
| Logical Rolename | |
| ColumnName | pdc |
| RoleName | |
| Definition | Percent double couple of the seismic moment tensor |
| Note | Range: 0 <= pdc <= 100 |
| pclvd |
| Base Entity | mec |
| Attribute Name | pclvd |
| Logical Rolename | |
| ColumnName | pclvd |
| RoleName | |
| Definition | Percent compensated linear vector dipole of the seismic moment tensor |
| Note | Range: 0 <= pclvd <= 100 |
| piso |
| Base Entity | mec |
| Attribute Name | piso |
| Logical Rolename | |
| ColumnName | piso |
| RoleName | |
| Definition | Percent isotropic of the seismic moment tensor. If the solution is constrained to have zero trace (no "ISO"), then "ISO" should be NULL, as opposed to a case where the full moment tensor was used, and the ISO component ended up being very small ("0") |
| Note | Range: 0 <= piso <= 100 |
| datetime |
| Base Entity | mec |
| Attribute Name | datetime |
| Logical Rolename | |
| 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 Entity | mec |
| 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 | mec |
| 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 |