| Attribute/Logical Rolename |
Domain |
Datatype |
NULL |
Definition |
sta |
|
VARCHAR(6) |
NO |
Station code. This is the common code-name of a seismic observatory. Generally only three or four characters are used |
| net |
|
VARCHAR(8) |
NO |
Unique network identifier. This character string is the name of a seismic network |
sensor_nb |
|
NUMERIC(8, 0) |
NO |
This attribute represents the sensor number |
| ondate |
|
DATE |
NO |
This attribute denotes the start date |
sensor_id |
|
NUMERIC(8, 0) |
NO |
Sensor identifier. Each sensor is assigned a unique integer which identifies it in a database |
| lat |
|
FLOAT |
YES |
Latitude. This attribute is the geographic latitude. Locations north of the equator have positive latitudes |
| lon |
|
FLOAT |
YES |
Longitude. This attribute is the geographic longitude. Longitudes are measured positive east of the Greenwich meridian |
| elev |
|
FLOAT |
YES |
Elevation. This attribute is the elevation of a seismic station relative to mean sea level |
| edepth |
|
FLOAT |
YES |
Emplacement depth. This attribute gives the depth at which the instrument is positioned, relative to the value of elev |
| nb_component |
|
NUMERIC(8, 0) |
NO |
This attribute denotes the number of components of a sensor |
| datumhor |
|
VARCHAR(8) |
YES |
Datum type for horizontal (latitude and longitude) coordinates |
| datumver |
|
VARCHAR(8) |
YES |
Datum type for depth or elevation |
| offdate |
|
DATE |
YES |
This attribute denotes the end date |
| lddate |
|
DATE |
YES |
Load date. Date and time that the record was created or last modified, in Oracle date datatype |