| 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 |
| data_nb |
|
NUMERIC(8, 0) |
NO |
This attribute represents the datalogger number |
pchannel_nb |
|
NUMERIC(8, 0) |
NO |
This attribute denotes a physical channel |
| ondate |
|
DATE |
NO |
This attribute denotes the start date |
| board_type |
|
VARCHAR(1) |
NO |
This attribute describes the board type on the datalogger where the physical channel resides. Regular seismic channels are usually on a primary board. Auxiliary channels (internal temperature, external power, …) are usually on an auxiliary board. A value of external is used to represent a digitizer that is not part of the datalogger (for example an embedded digitizer in a digital pressure sensor). A digital board is used to represent truly digital sensors which don’t actually have any digitizing stage from Volts to Counts (for example a rainfall sensor that uses a digital counter) |
| channel_type |
|
VARCHAR(1) |
NO |
This attribute describes the type of the input channel. An input channel is usually classified as physical when the data is digitized (velocity, acceleration, ...). An input channel is defined as synthetic when the data is not derived directly from a sensor (clock frequency, available telemetry buffer channel, clock quality, ...) |
| seed_io |
|
VARCHAR(2) |
NO |
This attribute represents the SEED instrument and orientation |
| nb_lchannel |
|
NUMERIC(8, 0) |
NO |
This attribute denotes the number of logical channels of a datalogger |
| 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 |