| evid |
| Base Entity | significant_event |
| Attribute Name | evid |
| Logical Rolename | evid |
| ColumnName | evid |
| RoleName | evid |
| Definition | Event identifier. Each event is assigned a unique integer which identifies it in a database. It is possible for several records in the Origin relation to have the same evid. This indicates there are several opinions about the location of the event. The evid does not have to be identical to the local network’s event identifier, which is stored in the Origin table. This allows merging data for a single event from multiple sources without insisting that database evid is identical to the source’s local event identifier |
| Note | Range: evid > 0 |
| evname |
| Base Entity | significant_event |
| Attribute Name | evname |
| Logical Rolename | evname |
| ColumnName | evname |
| RoleName | evname |
| Definition | Event name. This is a descriptive name for major events |
| Note | Range: Any free-format string up to 80 characters |
| remarks |
| Base Entity | significant_event |
| Attribute Name | remarks |
| Logical Rolename | remarks |
| ColumnName | remarks |
| RoleName | remarks |
| Definition | This attribute is used to give some information about the event, such as felt or damage |
| Note | Range: remarks = {f | d} f = felt d = damage |
| nfelt |
| Base Entity | significant_event |
| Attribute Name | nfelt |
| Logical Rolename | nfelt |
| ColumnName | nfelt |
| RoleName | nfelt |
| Definition | Number of felt reports |
| Note | Range: nfelt > 0 |
| mmi |
| Base Entity | significant_event |
| Attribute Name | mmi |
| Logical Rolename | mmi |
| ColumnName | mmi |
| RoleName | mmi |
| Definition | Reported or inferred Mercali intensity for event |
| Note | Range: 1 <= mmi <= 12 |
| pga |
| Base Entity | significant_event |
| Attribute Name | pga |
| Logical Rolename | pga |
| ColumnName | pga |
| RoleName | pga |
| Definition | Peak ground acceleration recorded by any station for the event. Represented in g, where 1.0 = 1g |
| Note | Range: pga > 0.0 Units: g |
| lddate |
| Base Entity | significant_event |
| 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 |