Description
Digitized seismograms and event catalogues from a small observatory that recorded 20 thousand earthquakes, most of them too faint to feel.
Provenance
Transferred from the backlog of unread media at a partner archive. Two copies were found; together they gave a complete image. Independent reads agree bit for bit.
Preservation
- Fixity (SHA-256)
5406bab285aabb6eed49958161848fabedd2b6d65532f06f414d7efe0143e6bd- Last verified
- Sep 27, 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.
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: Copperford Observatory, Seismograms, Copperford Observatory, 1988–1999 (1988–1999). Lazarus Archive, LZ-20331.