AusMT survey data — licence and attribution
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Licence:     CC-BY-4.0
Licence URL: https://creativecommons.org/licenses/by/4.0/
Licensor:    Geological Survey of Queensland
Year:        2021

Attribution (cite as):
  Sourced from the Geological Survey of Queensland Open Data Portal, record mt100144, Century North, licensed Creative Commons Attribution. The survey was acquired by Moombarriga Geoscience Pty Ltd for Red Metal Limited under the Collaborative Exploration Initiative, CEI0121. The header dates of 135 served copies have been repaired; those delivered files are kept unaltered under provenance/as-delivered/ and every change is recorded in the served file itself.

This LICENSE.txt travels with the data files in this archive. The transfer functions were
distributed via the AusMT portal, which serves only openly licensed Australian magnetotelluric
releases; the licence above is the custodian's, set in the survey's survey.yaml. Reuse under the
terms of that licence (https://creativecommons.org/licenses/by/4.0/).

Changes were made: 135 of the 137 served files carry a header date repair made with _tools/repair_edi_header_dates.py: ACQDATE, which prints the Geotools placeholder 01/01/01, is set to the date of that station's own >INFO recording identifier, and FILEDATE, which prints 06/14/21, is rewritten to 2021-06-14. Nine lines recording the source file, its digest, the defect, the change, the basis, the ruling and the tool are inserted after >INFO. Each repaired file therefore differs from its delivered copy in exactly two header lines and nine inserted lines, and grows by four bytes in the header; no data block, no line ending and no other header line is changed. The remaining 2 files, CEN3100 and CEN4015, carry a real ACQDATE that the reader takes correctly and are served byte identical to the delivery.. AusMT serves derived renditions (canonical EMTF XML; MTH5 where available) generated from the deposited files; per-station conditioning notes are recorded in the machine-readable products.
