P08 · CASE 0001 · POPULATED EVIDENCE RECORD

What Is Antarctica?

PROVISIONAL RESULTSTRUCTURALLY_COMPLETE_FOR_DRY_RUN_REGISTER

Current evidence strongly favors Antarctica being a polar rocky continent covered by ice and surrounded by ocean; major unknowns remain beneath the ice, not in demonstrated lands beyond an outer wall.

7claims

13evidence

3models

6tests

Canonical source basis:
CP1_Observatory_CASE_0001_Antarctica_Evidence_Register_v0.1_Dry_Run.xlsx
CP1_Observatory_CASE_0001_Antarctica_v0.1_Dry_Run.docx

Claims

Claims retain their original research-state labels. A status is not a probability of truth.

ID	State	Claim
CLM-0001	ACCEPTED	Antarctica is a rocky continent concentrated around the geographic South Pole and covered by a thick ice sheet.
CLM-0002	ACCEPTED	The Antarctic bed, grounding line and coast are irregular and heterogeneous; continent-wide grids include measured data plus explicit interpolation and uncertainty.
CLM-0003	ACCEPTED	The Southern Ocean contains a continuous Antarctic Circumpolar Current around Antarctica.
CLM-0004	ACCEPTED	Access to Antarctica is regulated and logistically constrained, but tourism, non-governmental activity and treaty inspections are documented rather than universally prohibited.
CLM-0005	ACCEPTED	Antarctica contains dynamic and incompletely mapped subglacial hydrological systems beneath the ice.
CLM-0006	CONTRADICTED	Antarctica is a uniform outer ring or wall that physically contains the world's oceans.
CLM-0007	ACTIVE	The strongest material unknowns concern the continent beneath the ice and local measurement gaps, not demonstrated lands beyond an external perimeter.

Evidence register · 13 serialized

ID	Evidence	Claim	Relation	Quality
EVD-0001	Bedmap3 updated ice bed, surface and thickness gridded datasets for Antarctica	CLM-0001	SUPPORTS	VERY HIGH
EVD-0002	Bedmap3 methods, interpolation coverage and uncertainty record	CLM-0002	SUPPORTS	VERY HIGH
EVD-0003	Antarctic factsheet and geographical statistics	CLM-0001	SUPPORTS	HIGH
EVD-0004	Antarctic Circumpolar Current overview	CLM-0003	SUPPORTS	VERY HIGH
EVD-0005	Antarctic Treaty inspections database	CLM-0004	SUPPORTS	VERY HIGH
EVD-0006	2025 Site Guidelines for Visitors	CLM-0004	SUPPORTS	VERY HIGH
EVD-0007	Detection of 85 new active subglacial lakes from a decade of CryoSat-2 data	CLM-0005	SUPPORTS	VERY HIGH
EVD-0008	IGS global GNSS network and open observation distribution	CLM-0006	CONTRADICTS	VERY HIGH
EVD-0009	O'Higgins Antarctic IGS station metadata and RINEX availability	CLM-0006	CONTRADICTS	VERY HIGH
EVD-0010	Syowa Antarctic IGS station metadata and RINEX availability	CLM-0006	CONTRADICTS	VERY HIGH
EVD-0011	Antarctica and global paleogeography through Gondwana and Southern Ocean opening	CLM-0006	CONTRADICTS	HIGH
EVD-0012	Manual and reporting framework for tourism and non-governmental activities	CLM-0004	SUPPORTS	VERY HIGH
EVD-0013	ESA summary and reproducibility path for the 2025 subglacial-lake discovery	CLM-0007	SUPPORTS	HIGH

Competing models · 3

MOD-A — Polar rocky continent on an approximately oblate spherical Earth ACTIVE
MOD-B — Antarctica as a uniform outer ring or wall containing the oceans CONTRADICTED
MOD-C — Unspecified alternative global geometry WEAKENED

Tests / adversarial controls · 6

ID	Failure mode / test	State	Required control
TST-0001	Compare Bedmap3 survey points, masks, uncertainties and bed products.	COMPLETED	Preserve interpolation uncertainty; no mapped uniform wall.
TST-0002	Independent CP1 processing of selected RINEX station pairs plus astronomical orientation.	IN PROGRESS	Pre-register coordinate residual and compare both model transforms.
TST-0003	Review NOAA hydrographic, altimetry and transect observations.	COMPLETED	Test continuity of circumpolar flow.
TST-0004	Review treaty inspection, visitor and tourism records.	COMPLETED	Distinguish regulated access from total prohibition.
TST-0005	Track new primary datasets and spatial location of unknowns.	COMPLETED	Avoid arguing from absence; map where new findings occur.
TST-0006	Future synchronized camera, inclinometer and GNSS observations across southern longitudes.	PLANNED	Pre-register model residuals before observation.

UNKNOWN / unresolved · 2

ANT-UNK-01 — Fine-scale bed, basal hydrology and geothermal structure.
ANT-UNK-02 — A CP1-independent raw geodesy/astronomy test remains incomplete.

Serialization boundary

This interface does not complete missing research by inference. The current record is STRUCTURALLY_COMPLETE_FOR_DRY_RUN_REGISTER. Missing source-level or bilingual object-level fields remain absent until they are read from a canonical Observatory artifact.