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Volcanic Activity Report
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Potential Field
| POTENTIAL FIELD DATA | ||||
| Attribute | Attribute Name | Description | Format | Units |
| Magnetic field strength | ||||
| fd_mag_id | magnetic field strength ID | An identifier for linking with other tables | mediumint | |
| fs_id | fields station ID | The identifier for linking to station information | mediumint | |
| fd_mag_time | Measurement time | Measurement time in UTC stored as datetime (YYYY-MM-DD hh:mm:ss). | datetime | |
| fd_mag_f | F | Total field strength | xxxxx.xx | nT |
| fd_mag_compx | X | X Component | xxxxx.xx | nT |
| fd_mag_compy | Y | Y Component | xxxxx.xx | nT |
| fd_mag_compz | Z | Z Component | xxxxx.xx | nT |
| fd_mag_ferr | Tot field strength uncertainty (F) | Tot field strength uncertainty | xx.xx | nT |
| fd_mag_errx | Component X uncertainty | The uncertainty in the x component measurement | xx.xx | nT |
| fd_mag_erry | Component Y uncertainty | The uncertainty in the y component measurement | xx.xx | nT |
| fd_mag_errz | Component Z uncertainty | The uncertainty in the z component measurement | xx.xx | |
| fd_mag_ref_stnid | Reference stn code | A link to information about the reference station | mediumint | |
| fd_mag_highpass | Highpass | If there is a highpass, please enter the value in Hz above which you are measuring all frequencies. | xx.x | Hz |
| fd_mag_lowpass | Lowpass | If there is a lowpass, please enter the value in Hz below which you are measuring all frequencies. | xx.x | Hz |
| fd_mag_hbandpass | High bandpass value | If you are measuring bandpass, please enter the high value in Hz for the range you are measuring. | xx.x | Hz |
| fd_mag_lbandpass | Low bandpass value | If you are measuring bandpass, please enter the low value in Hz for the range you are measuring. | xx.x | Hz |
| fd_mag_comm | Comments | Comments on the magnetic measurements. | varchar(255) | |
| cc_id2 | Collector ID | An identifier for linking to data collector information. | mediumint | |
| ci_id | Instrument ID | An identifier for linking to instrument information. | mediumint | |
| fd_mag_loaddate | Load date | The date this row was entered | datetime | |
| cc_id_load | Data loader ID | The id linking to the person who entered this row of data | mediumint | |
| Magnetic Vector Data | ||||
| fd_mgv_id | magnetic vector ID | An identifier for linking with other tables | mediumint | |
| fs_id | fields station ID | The identifier for linking to station information | mediumint | |
| fd_mgv_time | Measurement time | Measurement time in UTC stored as datetime (YYYY-MM-DD hh:mm:ss). | datetime | |
| fd_mgv_dec | Declination | Declination | xxx | deg 0-360 |
| fd_mgv_incl | Inclination | Inclination | sxx | deg 0-90 |
| fd_mgv_comm | Comments | Comments | varchar(255) | |
| cc_id2 | Collector ID | An identifier for linking to data collector information. | mediumint | |
| ci_id | Instrument ID | An identifier for linking to instrument information. | mediumint | |
| fd_mgv_loaddate | Load date | The date this row was entered | datetime | |
| cc_id_load | Data loader ID | The id linking to the person who entered this row of data | mediumint | |
| Electric | ||||
| fd_ele_id | electric data ID | An identifier for linking with other tables | mediumint | |
| fs_id1 | Ref station 1 ID | The identifier for linking to the station information from which the electrode is subtracted (station A in the equation A - B). | mediumint | |
| fs_id2 | Ref station 2 ID | The identifier for linking to the station information for the electrode that's being subtracted (station B in the equation A - B). | mediumint | |
| fd_ele_time | Measurement time | Measurement time in UTC stored as datetime (YYYY-MM-DD hh:mm:ss). | datetime | |
| fd_ele_ef | Electric field | Electric field (difference/distance). | sxxxx | mV |
| fd_ele_ef_err | Electric field uncertainty | Electric field uncertainty | xxx | mV |
| fd_ele_dir | Direction | Direction from station 1 to station 2 (angle with respect to North) | xxx | deg 0-360 |
| fd_ele_highpass | Highpass | If there is a highpass, please enter the value in Hz above which you are measuring all frequencies. | xx.x | Hz |
| fd_ele_lowpass | Lowpass | If there is a lowpass, please enter the value in Hz below which you are measuring all frequencies. | xx.x | Hz |
| fd_ele_hbandpass | High bandpass value | If you are measuring bandpass, please enter the high value in Hz for the range you are measuring. | xx.x | Hz |
| fd_ele_lbandpass | Low bandpass value | If you are measuring bandpass, please enter the low value in Hz for the range you are measuring. | xx.x | Hz |
| fd_ele_spot | Self Potential | Self potential | sxxxx | mV |
| fd_ele_spot_err | Self potential uncertainty | Self potential uncertainty | xxx | mV |
| fd_ele_appres | Apparent Resistivity | Apparent Resistivity | xxxx | ohm-m |
| fd_ele_appres_err | Apparent Resistivity uncertainty | Uncertainty in apparent resistivity | xxx | ohm-m |
| fd_ele_dirres | Direct Resistivity | Direct Resistivity | xxxx | ohm-m |
| fd_ele_dirres_err | Direct Resistivity uncertainty | Uncertainty in direct resistivity | xxx | ohm-m |
| fd_ele_comm | Comments | Comments about the measurements | text | |
| cc_id2 | Collector ID | An identifier for linking to data collector information. | mediumint | |
| ci_id | Instrument ID | An identifier for linking to instrument information. | mediumint | |
| fd_ele_loaddate | Load date | The date this row was entered | datetime | |
| cc_id_load | Data loader ID | The id linking to the person who entered this row of data | mediumint | |
| Gravity | ||||
| fd_gra_id | gravity data ID | An identifier for linking with other tables | mediumint | |
| fs_id | fields station ID | The identifier for linking to station information | mediumint | |
| fd_gra_time | Measurement time | Measurement time in UTC stored as datetime (YYYY-MM-DD hh:mm:ss). | datetime | |
| fd_gra_fstr | Field strength (g) | Field strength (g) | xxxx.xxx | Gal |
| fd_gra_fstr_err | Field strength (g) uncertainty | Field strength (g) uncertainty | xxxx.x | MicroGal |
| fd_gra_vdisp | Assoc vertical displ | Comment on associated vertical displacement, if applicable (leave blank if unknown, please use 'none' if the value is known as none). | text | |
| fd_gra_gwater | Assoc gwater level | Comment on associated groundwater level, if applicable (leave blank if unknown, please use 'none' if the value is known as none). | text | |
| fd_gra_ref_stnid | Ref station | Link to reference station information. This station is measured in the beginning and end of each set of measurements. | mediumint | |
| fd_gra_comm | Comments | Comments about the measurements | varchar(255) | |
| cc_id2 | Collector ID | An identifier for linking to data collector information. | mediumint | |
| ci_id | Instrument ID | An identifier for linking to instrument information. | mediumint | |
| fd_gra_loaddate | Load date | The date this row was entered | datetime | |
| cc_id_load | Data loader ID | The id linking to the person who entered this row of data | mediumint | |
| Fields Station Table | ||||
| fs_id | Fields station table ID | An identifier for linking with other tables | mediumint | |
| cn_id | network id | For linking to a network if applicable | mediumint | |
| fs_code | station code | The code name given by the observatory | text | |
| fs_nam | station name | The name of the benchmark or station | text | |
| fs_nlat | latitude | The latitude of the station | sxx.xxxxxxx | deg lat |
| fs_nlon | longitude | The longitude of the station | sxxx.xxxxxxx | deg long |
| fs_nelev | elevation | The nominal elevation of the station | sxxxx | m |
| fs_datum | Datum | The datum used for the longitude and latitude. | varchar(30) | |
| fs_utc | difference from UTC | Time zone relative to UTC - "s" = sign; read as GMT +- xx h. Will be used to convert data to local time where needed. | sxx.x | |
| fs_est | date established | The date the station was set up | datetime | |
| fs_dest | stop date | The date the station was permanently decommissioned. See observatory for station operation history. | datetime | |
| fs_desc | Station description | A description of the station or any comments | varchar(255) | |
| cc_id | Contact ID | An identifier for linking to contact information concerning this data from the contact table. | mediumint | |
| fs_loaddate | Load date | The date this row was entered | datetime | |
| cc_id_load | Data loader ID | The id linking to the person who entered this row of data | mediumint | |
Last Updated on 1/12/2004
By chris newhall