# Felter i TEMSEG

Feltnavn | Obligatorisk | Beskrivelse | datatype | længde | præcision | kodeliste |
---|---|---|---|---|---|---|

DATASET | Internal Id (in GEUS' Gerda-database) of Dataset | NUMBER | 8 | 0 | ||

POSITION | x | Soundings (positions) numbered 1, 2, 3, ... in order recorded. | NUMBER | 8 | 0 | |

SEGMENT | x | Segments numbered 1,2,3, ... in order recorded. | NUMBER | 4 | 0 | |

SEGMENTTYP | x | SegmentType is a number that indicates whether the segment contains noise measurements (0), raw data (1) or processed data (2). | NUMBER | 1 | 0 | |

REPFREQ | x | Repetition frequency in Hz. | NUMBER | 8 | 3 | |

RXCOIL | x | Receiver coil | VARCHAR2 | 64 | 0 | GER$GEOELINSTRUMENT_LIST |

TXCURRENT | x | Current in A in the transmitter loop. For processed data the values of TXCurrent are assigned to 1. | NUMBER | 5 | 2 | |

DISTANCE | x | Distance in metres between the centre of the transmitter and the receiver coils. | NUMBER | 8 | 3 | |

ANGLE | Angle 0...360 degrees clockwise from true geographical north to the line between the centre of transmitter and receiver coils. The angle is between north and the line segment pointing towards the receiver coil. Should be NULL if distance=0. | NUMBER | 6 | 3 | ||

TXHEIGHT | x | Height of the centre of the transmitter coil in metres over the terrain surface. | NUMBER | 8 | 3 | |

TXAREA | x | The area of the transmitter coil in square metres. | NUMBER | 10 | 3 | |

TXSIDE1 | x | Length in metres of Side1 of a rectangular transmitter loop. Side1 is defined to be the side of the loop which is cut by the line connecting the centre of the transmitter loop and the receiver coil. | NUMBER | 8 | 3 | |

TXSIDE2 | x | Length in metres of Side2 of a rectangular transmitter loop. Side2 is the side adjecent to Side1. | NUMBER | 8 | 3 | |

TXORIENT | Transmitter orientation relative to the receiver coil. The transmitterorientation is specified as the angle (0...180 degrees) measured clockwise from TXSide1 to the line connecting the centres of the transmitter loop and the receiver coil. | NUMBER | 3 | 0 | ||

TXTURNS | x | Number of turns in the transmitter loop (not necessarily an integer). For processed data the values of TXTurns are assigned to 1. | NUMBER | 5 | 2 | |

TXNORMALX | x | Length of x-component of normal vector of transmitter coil. Typical 0 or 1. | NUMBER | 4 | 3 | |

TXNORMALY | x | Length of y-component of normal vector of transmitter coil. Typical 0 or 1. | NUMBER | 4 | 3 | |

TXNORMALZ | x | Length of z-component of normal vector of transmitter coil. Typical 0 or 1. | NUMBER | 4 | 3 | |

RXHEIGHT | x | Height of the centre of the receiver coil in metres over the terrain surface. | NUMBER | 8 | 3 | |

RXAREA | x | Effective area of receiver coil in square metres. | NUMBER | 10 | 3 | |

RXNORMALX | x | Length of x-component of normal vector of receiver coil. Typical 0 or 1. | NUMBER | 4 | 3 | |

RXNORMALY | x | Length of y-component of normal vector of receiver coil. Typical 0 or 1. | NUMBER | 4 | 3 | |

RXNORMALZ | x | Length of z-component of normal vector of receiver coil. Typical 0 or 1. | NUMBER | 4 | 3 | |

TONTIME | Time in sec. at the beginning of the turn-on ramp. (Negative as t=0 is defined to be at the beginning of the turn-off ramp.) | NUMBER | 16 | 10 | ||

KON | Turn-on exponential decay constant. | NUMBER | 22 | 0 | ||

TOFFLINEAR | Slope of the linear part of the turn-off ramp in A/sec. (First part of turn-off waveform is linear decay and the rest is an exponential decay.) | NUMBER | 22 | 0 | ||

AOFFEND | Current in A at the end of the linear part of the turn-off ramp. | NUMBER | 6 | 4 | ||

KOFF | Turn-off exponential decay constant. | NUMBER | 22 | 0 | ||

MAXGATE | x | Maximum number of gates available in the segment. (Instrument dependend.) | NUMBER | 3 | 0 | |

TIMESHIFTC | x | Constant in sec., by which GateCeTimes are shifted, so that the sum of TemDat.GateCeTime and TemSeg.TimeShiftC is the time delay from the beginning of turn-off ramp to the centre of the gate (measurement window). | NUMBER | 22 | 0 | |

DBDTSHIFTC | x | Constant, by which DbDt is corrected due to current or gain errors. The correct dBdt is TemDat.DbDt * TemDat.Factor * TemSeg.DbDtShiftF + TemSeg.DbDtShiftC. | NUMBER | 22 | 0 | |

DBDTSHIFTF | x | Factor, by which DbDt is corrected due to current or gain errors. The correct dBdt is TemDat.DbDt * TemDat.Factor * TemSeg.DbDtShiftF + TemSeg.DbDtShiftC. | NUMBER | 22 | 0 | |

STANDEVIUN | Uniform uncertainty for all dB/dt data in the segment. It is a relative uncertainty (one standard deviation) on data given as a factor. The total relative uncertainty on each data point is calculated when querying data as the square root of the square sum of the uncertainty given by the noise model (TemDat.DbDtStdDev) and the uniform uncertainty (TemSeg.StanDeviUn). The absolute uncertainty (length of error bar) on the data point is found by multiplying and dividing the data by the factor, respectively. | NUMBER | 4 | 3 | ||

NOTE | Notes (comments) about the segment | VARCHAR2 | 254 | 0 | ||

SETTINGS | Settings. Used to store information (specific to the segment) which cannot be covered by the specific fields of the table. | VARCHAR2 | 254 | 0 | ||

SEGCOUPLED | Flag marking whether data in the segment are coupled to anthropogenic good conductors. Flag 0 means no data in the segment are coupled, 1 data in the segment are coupled, 2 there are data in the sounding that are coupled, but the actual segments are not specified. 3 data in the sounding are not evaluated with respect to couplings to anthropogenic good conductors. | NUMBER | 8 | 0 | GER$TEMSEGCOUPLED_LIST |