Felter i HEMHEA

Feltnavn Obligatorisk Beskrivelse datatype længde præcision kodeliste
DATASET Internal Id (in GEUS' Gerda-database) of Dataset NUMBER 8 0
UTMZONE Utmzone number (e.g. 32) NUMBER 2 0
DATUM Geographic datum (ed50, wgs84, etc.) VARCHAR2 7 0
HEIGHTSYS Flag indicating the height system used for the given elevations. The allowed flags are DVR90 for Dansk Vertikal Reference 1990 and DNN for Dansk Normal Nul. VARCHAR2 16 0 GEN$HEIGHTSYSTEM_LIST
XUTMMIN X-coordinate of south-western corner of circumscribing rectangle NUMBER 10 3
YUTMMIN Y-coordinate of south-western corner of circumscribing rectangle NUMBER 10 3
XUTMMAX X-coordinate of north-eastern corner of circumscribing rectangle NUMBER 10 3
YUTMMAX Y-coordinate of north-eastern corner of circumscribing rectangle NUMBER 10 3
NUMCHANNEL Number of channels. A new channel is defined if either frequency, coil separation or coil geometry change. NUMBER 8 0
TOWCABLELENGTH Length of the bird tow cable (distance between helicopter and bird) [m] NUMBER 7 4
NOTE Notes (comments) to the HEMHeader VARCHAR2 1024 0
DECIMATION 1: every value is taken out of the original data set (10 readings per second), 2: every second value is taken, and so on NUMBER 2 0
STANDEVIUN2 Uniform uncertainty for all data of type 2 in the dataset. It is a relative uncertainty (one standard deviation) on data given as a factor. The total relative uncertainty on each data point is calculated when querying data as the square root of the square sum of the uncertainty given by the noise model (HEMDat.DataValueStD) and the uniform uncertainty (HEMHea.StandeviUn). The absolute uncertainty (length of error bar) on the data point is found by multiplying and dividing the data value by the factor, respectively. NUMBER 6 3
ORDIPARAM Unit for data 1, real/quad [ppm] or rhoa/phase [ohmm/degrees] VARCHAR2 24 0
ORDIPARAM2 Unit for data 2, real/quad [ppm] or rhoa/phase [ohmm/degrees] VARCHAR2 24 0
HEMSUBTYPE Type of data [HEM, GCM] VARCHAR2 64 0 GER$HEMSUBTYPE_LIST
GERDAELEVATION_MODEL The elevation model from which the value of HEMPOS.GERDAELEVATION has been calculated VARCHAR2 64 0
GERDAELEVATION_CALCDATE The date that GERDA calculated the value of HEMPOS.GERDAELEVATION DATE 7 0