Description
Digitized seismograms and event catalogues from a small observatory that recorded 12 thousand earthquakes, most of them too faint to feel.
Provenance
Deposited by Longhaven Bay Demoscene Archive, from its own collections. The dye layer had begun to fail at the outer edge; the last sectors came from a second read in a different drive. All files were recovered; 48 damaged sectors were rebuilt from redundant data.
Preservation
- Fixity (SHA-256)
bf6d912efba1384f4691837bd577dbc7f492074a9b01ba131e83d11358d787d7- Last verified
- Oct 26, 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 under the work’s license.
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: Greenharrow Observatory, Seismograms, Greenharrow Observatory, 2000–2004 (2000–2004). Lazarus Archive, LZ-22955.