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:    Adelaide University
Year:        2012

Attribution (cite as):
  The 15 long period soundings are sourced from the Beverley 2012 holding of The University of Adelaide Magnetotellurics (MT) data collection, DOI 10.4225/41/5a618c3ae30ab, licensed CC BY 4.0, and are served byte identical to the collection file. The 32 broadband soundings are Adelaide University's own Geotools export, licensed CC BY 4.0 under the owner ruling of 2026-09-21; their header dates have been rewritten into ISO 8601 and every delivered file is kept unaltered under provenance/as-delivered/.

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: The served set is 47 stations: 15 long period and 32 of the 35 broadband sites the field sheet records. Nothing is withheld, because both engine gates pass on all 47. The 15 long period files are byte identical to their collection file and only their names are AusMT's, each being that file's own DATAID. The 32 broadband files have their ACQDATE and FILEDATE values rewritten from a month-first two digit form into ISO 8601 by _tools/repair_edi_header_dates.py, each field keeping the value it printed, with nine lines inserted after each file's >INFO line naming the source file, its folder, its sha256, the kept copy, the defect, the change, the basis, the ruling and the tool. Nothing else in any file is changed: no data block, no other header line, no padding and no line ending, proved file by file against provenance/as-delivered/, where exactly nine lines are inserted and exactly two lines change in each of the 32 and both changed lines are date lines. The broadband station identifiers are published from the station_ids map rather than from DATAID, because the delivered DATAID carries the processing pass's output suffix; nothing inside any file is rewritten to achieve it. No number, no position, no frame declaration and no gate verdict is altered.. 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.
