From 48f2e45d9ac1af9af1fd28e5326ad577a263ebdc Mon Sep 17 00:00:00 2001
From: otivm <sandor@factoryfouroh.info>
Date: Sun, 26 Apr 2026 18:29:19 +0000
Subject: [PATCH] Add paleo_epochs table per RFC-TESSERA-3.0-PALEO-001

---
 data/create_otivm_db.sql | 98 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)

diff --git a/data/create_otivm_db.sql b/data/create_otivm_db.sql
index ebc86ff..48f91a9 100644
--- a/data/create_otivm_db.sql
+++ b/data/create_otivm_db.sql
@@ -171,3 +171,101 @@ CREATE TABLE h5_coverage (
     run_id          INTEGER NOT NULL REFERENCES pipeline_runs(id),
     notes           TEXT
 );
+
+-- ---------------------------------------------------------------
+-- 5. Palaeoenvironmental sea level epochs
+--    Per RFC-TESSERA-3.0-PALEO-001 Section 5
+--    Offsets verified against Lambeck et al. 2014 (PNAS 111:43),
+--    Lambeck et al. 2004 (Science 292:5517),
+--    Clark et al. 2009 (Science 325:5941),
+--    Dutton & Lambeck 2012 (Science 337:6091).
+--    All offsets are eustatic only — no isostatic correction.
+--    Negative = sea was lower = more land than today.
+--    approx_date_bce: positive = BCE, negative = CE.
+-- ---------------------------------------------------------------
+
+CREATE TABLE paleo_epochs (
+    epoch_key           TEXT    PRIMARY KEY,
+    label               TEXT    NOT NULL,
+    approx_date_bce     INTEGER NOT NULL,   -- positive = BCE, negative = CE
+    sl_offset_cm        INTEGER NOT NULL,   -- offset from modern MSL
+    confidence          INTEGER NOT NULL
+                                REFERENCES confidence_grades(id),
+    primary_citation    TEXT    NOT NULL,
+    notes               TEXT
+);
+
+INSERT INTO paleo_epochs
+    (epoch_key, label, approx_date_bce, sl_offset_cm, confidence, primary_citation, notes)
+VALUES
+    ('present',
+     'Present day',
+     -2025,
+     0,
+     1,
+     'GEBCO Compilation Group (2025) GEBCO 2025 Grid (doi:10.5285/a29c5465-b138-234d-e053-6c86abc0dc7f)',
+     'Baseline. EGM2008 geoid, modern MSL = 0. No correction applied.'),
+
+    ('roman_14bce',
+     'Roman period, 14 BCE',
+     14,
+     -10,
+     2,
+     'Lambeck et al. (2004) Sea-level change through the last glacial cycle. Science 292(5517).',
+     'Mediterranean RSL within measurement uncertainty of present. Treat as 0 for rendering.'),
+
+    ('subboral_3000bce',
+     'Sub-Boreal, 3000 BCE',
+     3000,
+     -200,
+     2,
+     'Lambeck et al. (2014) Sea level and global ice volumes from the Last Glacial Maximum to the Holocene. PNAS 111(43).',
+     NULL),
+
+    ('atlantic_6000bce',
+     'Atlantic optimum, 6000 BCE',
+     6000,
+     -500,
+     2,
+     'Lambeck et al. (2014) Sea level and global ice volumes from the Last Glacial Maximum to the Holocene. PNAS 111(43).',
+     NULL),
+
+    ('mesolithic_8000bce',
+     'Mesolithic, 8000 BCE',
+     8000,
+     -2500,
+     2,
+     'Lambeck et al. (2014) Sea level and global ice volumes from the Last Glacial Maximum to the Holocene. PNAS 111(43).',
+     'Primary epoch for CIVICVS simulation. Adriatic, Gulf of Gabes, Nile delta visibly affected. Mediterranean-specific RSL closer to -1500 to -2000cm; global eustatic value used per RFC-TESSERA-3.0-PALEO-001 Section 1.5.'),
+
+    ('preboreal_10000bce',
+     'Pre-Boreal, 10000 BCE',
+     10000,
+     -5000,
+     2,
+     'Lambeck et al. (2014) Sea level and global ice volumes from the Last Glacial Maximum to the Holocene. PNAS 111(43).',
+     NULL),
+
+    ('younger_dryas_11000bce',
+     'Younger Dryas, 11000 BCE',
+     11000,
+     -7000,
+     3,
+     'Lambeck et al. (2014) Sea level and global ice volumes from the Last Glacial Maximum to the Holocene. PNAS 111(43).',
+     'Rapid sea level fall during Younger Dryas stadial. Offset is approximate.'),
+
+    ('lgm_20000bce',
+     'Last Glacial Maximum, 20000 BCE',
+     20000,
+     -12000,
+     2,
+     'Clark et al. (2009) The Last Glacial Maximum. Science 325(5941).',
+     'Sicilian Channel partially exposed. Cyprus enlarged. Reserved for future use.'),
+
+    ('eem_125000bce',
+     'Eemian interglacial, 125000 BCE',
+     125000,
+     600,
+     3,
+     'Dutton & Lambeck (2012) Ice volume and sea level during the last interglacial. Science 337(6091).',
+     'Positive offset: sea was higher than today. Reserved for future use.');