id
string · Derived
Stable ADS namespace plus source record identifier.
Retained Ely-record example: "ads-library-1190563"
Research documentation
Evidence Atlas data dictionary
Version 0.2.0. Field definitions, provenance rules and spatial-confidence labels for the downloadable evidence index.
JSON contains release metadata, sources, a records array and statistics. CSV has one row per record; empty cells represent nulls and period terms use a semicolon followed by a space. No latitude/longitude fields are generated.
source_record_id
string · Source
Public catalogue identifier; not a CDA project reference.
Retained Ely-record example: "1190563"
title
string · Source
Bibliographic title, not an independently verified findings summary.
Retained Ely-record example: "Archaeological investigations at Downham Road, Ely, Cambridgeshire. Archive Report"
source_url
https URL · Source
Authoritative catalogue destination; access may be restricted.
Retained Ely-record example: "https://archaeologydataservice.ac.uk/library/browse/issue.xhtml?recordId=1190563"
doi
https URL | null · Source
DOI link where recorded; null means not supplied in this release.
Retained Ely-record example: "https://doi.org/10.5284/1091726"
investigation_year
integer | null · Source
Investigation year where recorded; not inferred from publication.
Retained Ely-record example: 2016
publication_year
integer · Source
Year attributed to the source report metadata.
Retained Ely-record example: 2019
organisation
string · Source
Organisation credited in metadata; not CDA client/employer evidence.
Retained Ely-record example: "Cambridge Archaeological Unit"
investigation_type
string · Source/display
Source method description conservatively normalised for display.
Retained Ely-record example: "Excavation"
site_name
string · Source
Site description in the catalogue, not a boundary.
Retained Ely-record example: "Downham Road"
place
string · Source/display
Place name; never used to invent coordinates.
Retained Ely-record example: "Ely"
parish
string · Source/display
Recorded parish name.
Retained Ely-record example: "Ely"
district
string · Source/display
District label for discovery filters, not current consent advice.
Retained Ely-record example: "East Cambridgeshire"
county
string · Derived
Cambridgeshire; inclusion label.
Retained Ely-record example: "Cambridgeshire"
easting
number | null · Source
British National Grid easting in metres, paired with northing.
Retained Ely-record example: 553198
northing
number | null · Source
British National Grid northing in metres; no inferred centroids.
Retained Ely-record example: 281500
coordinate_source
enum · Derived
published-grid-reference when both coordinates exist; otherwise none.
Retained Ely-record example: "published-grid-reference"
location_confidence
enum · Derived
published-grid-reference or unmapped. Published reference does not establish accuracy or site extent.
Retained Ely-record example: "published-grid-reference"
periods
string[] · Source/display
Source period terms; empty array means none recorded. CSV joins terms with semicolon and space.
Retained Ely-record example: ["Late Bronze Age","Iron Age","Roman","Middle Saxon","Post-medieval"]
source_system
string · Source
Catalogue/source context; ADS Library / OASIS or ADS Library.
Retained Ely-record example: "ADS Library / OASIS"
source_licence
string · Source
Recorded access/reuse statement, including unconfirmed rights. Check the original source before reuse.
Retained Ely-record example: "ADS Terms of Use and Access"
Import and reuse
Import CSV as UTF-8 with comma delimiters and double-quote text qualifiers. Keep source identifiers as text. JSON consumers should read the records array and retain nulls. Split CSV periods on “; ” only when a list is needed. Use source_url or DOI to verify original authors and rights before citation or reuse.
Project review
Return to the searchable evidence atlas
Use the table to follow each record back to its authoritative source page.