Description
Digitized seismograms and event catalogues from a small observatory that recorded 26 thousand earthquakes, most of them too faint to feel.
Provenance
Bought as part of a box of disks at an estate sale and donated anonymously. The disks had been stored beside a loudspeaker, and one track on each was weak. Independent reads agree bit for bit.
Preservation
- Fixity (SHA-256)
c682318e5fe1c0f7fb72808b99e65ea1f4c6ef5fb6a7862da44e1b90ab1e7612- Last verified
- Oct 25, 2026, by Vigil
- Migrated to
- CSV with a data dictionary, with the original files kept
- Copies
- Three, on two kinds of storage, in two cities
- Original carriers
- Kept in cold storage in Vancouver
Access
Free, in the Lazarus reading room in Vancouver and in partner reading rooms. Copies may be taken away.
Reading-room copies are migrated to CSV with a data dictionary, with the original files kept. The recovered files are kept exactly as they were found.
Cite as: Thornworth Observatory, Seismograms, Thornworth Observatory, 1994–1995 (1994–1995). Lazarus Archive, LZ-27392.