Photo review
Field photographs
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Model color relief
Colors distinguish relative surface relief in the model and are paired with hillshade. No validated elevation scale or tidal-datum tie is published here.
Site assets
Photo review
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GPS ledger
Each value belongs to one GPS row; it is not a single elevation for the site. The CSV distinguishes local-datum height from receiver altitude.
| ID | Lat | Lon | Point height | V. accuracy |
|---|---|---|---|---|
| HS103 Cooks Landing | -19.98978922 | -158.141551217333 | 3.59 | 0.162 |
| GCP | -19.99068784537 | -158.141777699203 | 4.15 | 0.08796 |
| GCP | -19.9905167300567 | -158.14160283753 | 2.25 | 0.0858 |
| GCP | -19.9903287002183 | -158.141695359108 | 2.36 | 0.07616 |
| HS103A | -19.9901554382083 | -158.141571379592 | 1.58 | 0.09319 |
| Near HS103B | -19.989918416635 | -158.141560380012 | 2.38 | 0.19079 |
| Remeasure HS103B | -19.9899183454833 | -158.141560451058 | 2.34 | 0.17655 |
| GCP3 float | -19.9896501910283 | -158.14161496145 | 1.78 | 0.19027 |
| GCP3 float | -19.9896503822367 | -158.141615138455 | 1.78 | 0.18312 |
| ATIU-20260527-HISEAS-050 | -19.989650453485 | -158.141615296803 | 1.81 | 0.17321 |
| HA103C | -19.9896433385083 | -158.141563978362 | 2.86 | 0.16867 |
| ATIU-20260527-HISEAS-052 | -19.9896436142767 | -158.141563674535 | 2.86 | 0.16547 |
| ATIU-20260527-HISEAS-053 | -19.9896232763667 | -158.141458423113 | 2.43 | 0.50134 |
| GCP5 | -19.989623162703 | -158.141455945169 | 2.01 | 0.979642 |
Samples
| Sample | Type | Time CKT | Position | Photos |
|---|---|---|---|---|
| HS103A | Fossilized coral | 2026-05-27 10:54 | -19.990155, -158.141571 1.583 m |
|
| HS103B | Fossilized coral | 2026-05-27 11:05 | -19.989918, -158.141560 2.378 m |
|
| HS103C | Fossilized coral | , |
|
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| HS103D | Fossilized coral | , |
|
Raster data
The map’s DEM layer is a hillshade visualization. These links provide the source elevation raster and orthophoto as GeoTIFFs for local analysis. The DEM uses the island-specific datum.
SHA-256 checksums are included in the public manifest for reproducibility.
HS103 has photogrammetry map layers, but profile transects have not been defined yet.
Animated geology plate
Atiu, Cook Islands
Surveyed 2026-05-27
Explore the lower coral framework and an irregular reef surface with adjacent sand at Oravaru / Cook’s Landing.
Based on the 27 May 2026 Atiu field observations, calibrated drone photographs and matched field photographs. H1 shows lower coral framework; H5 shows irregular reef relief and adjacent sand. The photographs provide fine detail beyond the model texture. Ages, event origin and sea-level implications are not established here. Focus positions are approximate presentation coordinates. The rectangular block, upper canopy cut and grey closure are artificial display geometry; the original source model is preserved.
H1 · Lower coral framework: field photograph (opens in a new tab) H5 · Irregular reef–sand contact: field photograph (opens in a new tab)Explore further to begin the guided tour.