This project involved the transcription of 39,000
seismic tapes and cartridges, together with the scanning of associated
paper data. 60% of the input media were 9-track tapes, the remainder
being a mixture of 3480 and 3490E cartridges, 7-track and 21-track
tapes. The tapes were from various vintages most requiring specialized
recovery methods.
The scope of work included loading the existing GDF catalogue to
MultiStore (the DPTS production control database) and cataloguing
approximately 10,000 tapes which were not in the existing catalogue.
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Tapes were received in random
order; therefore all tapes were copied to disk as tape images in “virtual
boxes” on “virtual pallets”. The data was then sorted
by survey and data type (e.g. field, processed stack, final migration),
and was output to 3590 cartridges or USB disk, sorted by survey, line
and data type. The original tapes were destroyed by environmentally
safe incineration.
Observers Logs were received without an inventory, sorted, scanned,
checked against field tapes and discrepancies identified.
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