DEEPMAP-Atlantic V3: Data and code for cartographic screening of Mid-Atlantic Ridge hydrothermal-site records

Abstract

Versioned reproducibility materials for DEEPMAP-Atlantic V3. This dataset and its analysis code document a point-based cartographic screening of 84 Mid-Atlantic Ridge hydrothermal-site records: 83 regionally selected InterRidge v3.4 entries plus the separately sourced Koralovoye literature record. The inventory is not a systematic census of discoveries through 2026. The frozen analysis uses 216 official ISA exploration-contract polygons and official OSPAR MPA boundaries. It identifies 25 records intersecting ISA polygons, five intersecting OSPAR MPAs, and none intersecting both. A separate Molodezhnoye sensitivity test contains 85 records, with 26 ISA intersections. Activity groups are evidence categories, not ecological vulnerability or mining-risk scores. The compact Data S1 archive includes the curated inventory, original InterRidge source table, source ledger, data dictionary, acquisition receipts, executable Python analysis and figure code, machine-readable results, figures, a screening viewer, and SHA-256 manifest. The separately uploaded full OSPAR source archive contains 599 features and enables the documented full-layer recomputation. ISA source geometry is excluded because redistribution permission is not asserted. Exact query, endpoint, snapshot checksum and instructions for authorised reacquisition are supplied; recomputing frozen ISA results requires the matching source snapshot. Public files can be checked internally without downloading that geometry. This record is distinct from the earlier DEEPMAP software release (10.5281/zenodo.20149247), which is a related historical output and is not the reproducibility archive for V3. No manuscript, confidential peer-review correspondence or policy report is included here. Components have different rights; see RIGHTS_AND_LICENCES.md. InterRidge material retains CC BY-NC-SA 4.0; OSPAR retains CC0 1.0; Natural Earth is public domain. Public access does not assign a new blanket licence to original code or documentation. Funding: DEEPMAP, recipient of the FLAD Atlantic Security Award 2025, in partnership with the Atlantic Centre and Instituto da Defesa Nacional. CCMAR received Portuguese national funding from FCT under UID/04326/2025, UID/PRR/04326/2025 and LA/P/0101/2020. Funders had no role in study design, analysis, interpretation or the decision to publish.