| net |
| Base Object | Channel_Data |
| Attribute Name | net |
| ColumnName | net |
| Logical Rolename | |
| RoleName | |
| Definition | Unique network identifier. This character string is the name of a seismic network |
| Note |
| sta |
| Base Object | Channel_Data |
| Attribute Name | sta |
| ColumnName | sta |
| Logical Rolename | |
| RoleName | |
| Definition | Station code. This is the common code-name of a seismic observatory. Generally only three or four characters are used |
| Note |
| seedchan |
| Base Object | Channel_Data |
| Attribute Name | seedchan |
| ColumnName | seedchan |
| Logical Rolename | |
| RoleName | |
| Definition | SEED channel name. The first character denotes the band code, the second for the instrument code and the third represents the component code |
| Note |
| location |
| Base Object | Channel_Data |
| Attribute Name | location |
| ColumnName | location |
| Logical Rolename | |
| RoleName | |
| Definition | Describes the individual sites on an array station, operated by the same network operator |
| Note |
| ondate |
| Base Object | Channel_Data |
| Attribute Name | ondate |
| ColumnName | ondate |
| Logical Rolename | |
| RoleName | |
| Definition | This attribute denotes the start date |
| Note |
| channel |
| Base Object | Channel_Data |
| Attribute Name | channel |
| ColumnName | channel |
| Logical Rolename | |
| RoleName | |
| Definition | Channel name |
| Note |
| channelsrc |
| Base Object | Channel_Data |
| Attribute Name | channelsrc |
| ColumnName | channelsrc |
| Logical Rolename | |
| RoleName | |
| Definition | Domain for channel. This specifies what naming convention is used for the channel name (i.e. SEED, USGS, etc.) |
| Note |
| inid |
| Base Object | Channel_Data |
| Attribute Name | id |
| ColumnName | inid |
| Logical Rolename | |
| RoleName | inid |
| Definition | Instrument identifier. It refers to the Generic Abbreviation Dictionary, that contains a name for this instrument |
| Note |
| remark |
| Base Object | Channel_Data |
| Attribute Name | remark |
| ColumnName | remark |
| Logical Rolename | |
| RoleName | |
| Definition | An optional comment given to the instrument. It can be anything, including a serial number or a notation of special modifications |
| Note |
| unit_signal |
| Base Object | Channel_Data |
| Attribute Name | id |
| ColumnName | unit_signal |
| Logical Rolename | |
| RoleName | unit_signal |
| Definition | A unit lookup key that refers to the Units Abbreviation Dictionary for the signal response of the instrument – usually the ground motion response, or something else for non-seismic devices |
| Note |
| unit_calib |
| Base Object | Channel_Data |
| Attribute Name | id |
| ColumnName | unit_calib |
| Logical Rolename | |
| RoleName | unit_calib |
| Definition | A unit lookup key that refers to the Units Abbreviation Dictionary for the units of calibration input, usually volts or amps |
| Note |
| lat |
| Base Object | Channel_Data |
| Attribute Name | lat |
| ColumnName | lat |
| Logical Rolename | |
| RoleName | |
| Definition | Latitude. This attribute is the geographic latitude. Locations north of the equator have positive latitudes |
| Note |
| lon |
| Base Object | Channel_Data |
| Attribute Name | lon |
| ColumnName | lon |
| Logical Rolename | |
| RoleName | |
| Definition | Longitude. This attribute is the geographic longitude. Longitudes are measured positive east of the Greenwich meridian |
| Note |
| elev |
| Base Object | Channel_Data |
| Attribute Name | elev |
| ColumnName | elev |
| Logical Rolename | |
| RoleName | |
| Definition | Elevation. This attribute is the elevation of an instrument relative to mean sea level |
| Note |
| edepth |
| Base Object | Channel_Data |
| Attribute Name | edepth |
| ColumnName | edepth |
| Logical Rolename | |
| RoleName | |
| Definition | Emplacement depth. This attribute gives the depth at which the instrument is positioned, relative to the value of elev |
| Note |
| azimuth |
| Base Object | Channel_Data |
| Attribute Name | azimuth |
| ColumnName | azimuth |
| Logical Rolename | |
| RoleName | |
| Definition | The azimuth of the instrument from north, clockwise |
| Note |
| dip |
| Base Object | Channel_Data |
| Attribute Name | dip |
| ColumnName | dip |
| Logical Rolename | |
| RoleName | |
| Definition | The dip of the instrument, down from horizontal |
| Note |
| format_id |
| Base Object | Channel_Data |
| Attribute Name | id |
| ColumnName | format_id |
| Logical Rolename | |
| RoleName | format_id |
| Definition | A data format lookup key that refers to the Data Format Dictionary that describes the format of the data in the data section for this channel |
| Note |
| record_length |
| Base Object | Channel_Data |
| Attribute Name | record_length |
| ColumnName | record_length |
| Logical Rolename | |
| RoleName | |
| Definition | The exponent (as a power of two) of the record length for these data |
| Note |
| samprate |
| Base Object | Channel_Data |
| Attribute Name | samprate |
| ColumnName | samprate |
| Logical Rolename | |
| RoleName | |
| Definition | Sampling rate. This attribute is the sample rate in samples/second |
| Note |
| clock_drift |
| Base Object | Channel_Data |
| Attribute Name | clock_drift |
| ColumnName | clock_drift |
| Logical Rolename | |
| RoleName | |
| Definition | A tolerance value, measured in seconds per sample, used as a thresold for time error detection in the data. The number of samples in a record are multiplied by this value to calculate a maximum drift allowed for the time in the next record. If the difference in time is less than this drift, consider them in the same time series |
| Note |
| flags |
| Base Object | Channel_Data |
| Attribute Name | flags |
| ColumnName | flags |
| Logical Rolename | |
| RoleName | |
| Definition | Channel flags |
| Note |
| offdate |
| Base Object | Channel_Data |
| Attribute Name | offdate |
| ColumnName | offdate |
| Logical Rolename | |
| RoleName | |
| Definition | This attribute denotes the end date |
| Note |
| lddate |
| Base Object | Channel_Data |
| Attribute Name | lddate |
| ColumnName | lddate |
| Logical Rolename | |
| RoleName | |
| Definition | Load date. Date and time that the record was created or last modified, in Oracle date datatype |
| Note |