Description
Digitized seismograms and event catalogues from a small observatory that recorded 20 thousand earthquakes, most of them too faint to feel.
Provenance
Found during a house clearance in Birchford Harbour and passed to Lazarus. The drive spun up and was imaged behind a write blocker in a single pass. All files were recovered; 39 damaged sectors were rebuilt from redundant data.
Preservation
- Fixity (SHA-256)
9f28321156365be438f82ce7dae78931060437d76556b37ff36d290380a0fa75- Last verified
- Oct 4, 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: Wolfharrow Observatory, Seismograms, Wolfharrow Observatory, 1985–1986 (1985–1986). Lazarus Archive, LZ-20680.