Zonge GDP-32 - Data Dump Utility; Time Series File Format

NATURAL SOURCE MAGNETOTELLURICS
May 2002 Section 13, Page 26
13.11 DATA DUMP UTILITY
Time series data are stored on the internal hard disk, and MT parameters are calculated and
stored in the data cache. Each stack of data will generate one data block for each decimation
level. The medium, high, and very high bands will generate 5 data blocks for each stack, and the
low band will generate 2 to 13 data blocks, depending upon the decimation levels selected.
13.12 TIME SERIES FILE FORMAT
This section describes the operation of the natural source AMT time series conversion program,
AMTDATA. The GDP-32
II
has the ability to save the raw time series data on the optional
internal hard disk. A default file name is given to file as BLKxxxx.OUT, where xxxx is the
next field data cache block number.
Below is the data from the field data cache. The GDP-32
II
generated a time series file called
BLK66.OUT.
0066
AMT 0533 94-10-28 13:30:49 11.5v TEN
Tx 1 Rx 75 N OUT
128 Hz 129 Bursts 1 Stack
2Ex 753.0822u 0.00066.63m406O 129 6.31 0 1200.0
3Ey 751.9731u 0.0040.200425O 129 3.02 0 1200.0
6Hx 1440.3314u-1752.4 0431O 129 2.89 0 1 6
7Hy 1340.2704u1397.6 0430O 129 2.61 0 1 7
8Hz 1240.3072u 0.0 0433O 129 0.00 0 1 8
freq ExMag HyMag xyRho xyPhz xyCC ExEy* ExEy* ....
768 3.0822u 0.2704u 66.63m 1397.6 0.000 -0.527u 1.984u
1024 2.0111u 0.1124u 20.91 -2137.7 0.012 -0.065u -1.023u -
freq EyMag HxMag yxRho yxPhz yxCC EyHx* EyHx*
768 1.9731u 0.3314u 0.200 -1752.4 0.004 0.092u 0.004u
1024 1.0510u 0.1388u 1.031 503.6 0.002 0.005u 0.002u
And below is the output in the file BLK66.PRN after the command AMTDATA BLK66 is
executed.
54141 12 47 0
12567
12456
7.500000e+001 7.500000e+001 1.440000e+002 1.340000e+002 1.240000e+002
2.000000e+002 2.000000e+002 6.000000e+000 7.000000e+000 8.000000e+000
1.351312e-007 6.697244e-008 5.361473e-007 1.076580e-006 1.343134e-007
-1718 -2079 661 1711 -1157
-1709 -2002 457 1823 -1065
-1714 -1983 140 1844 -928
.. . . .
.. . . .
.. . . .
.. . . .
.. . . .
.. . . .
The file is setup in lines, across the page, and columns, down the page, format. Each column
represents one channel's data. There are 6 lines of header information before the time series data
begins.