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 |
|---|---|---|---|---|
| Harbor base | -19.9790107604158 | -158.1396451719 | 1.50 | 0.086375 |
| Harbor base | -19.9790108532283 | -158.139645129917 | 1.51 | 0.079775 |
| Gcp5 | -19.9788874045133 | -158.139482588368 | 2.88 | 0.07739 |
| HA104A | -19.97890887813 | -158.139501437523 | 3.14 | 0.07561 |
| Gcp7 | -19.9789079596733 | -158.139395338057 | 7.03 | 0.07838 |
| GCP4 | -19.9789729782083 | -158.139493870688 | 6.76 | 0.07458 |
| GCP8 | -19.9791651269567 | -158.139536694925 | 6.62 | 0.07949 |
| Hs104D | -19.9788946095267 | -158.139329178465 | 6.00 | 0.11508 |
| GCP3 | -19.9792446713133 | -158.139556232655 | 2.04 | 0.10345 |
| GCP12 | -19.97932737649 | -158.139338311558 | 7.24 | 0.09696 |
| HS104B | -19.978971013655 | -158.139532824908 | 2.29 | 0.08979 |
| HS104C | -19.97891339611 | -158.139504841038 | 3.38 | 0.08598 |
| HS104E | -19.9788914621133 | -158.139340089538 | 6.48 | 0.08897 |
| Harbor base | -19.9790108256467 | -158.13964425997 | 1.46 | 0.077105 |
| Harbor base | -19.979010847375 | -158.139644478162 | 1.48 | 0.07778 |
| HS104Z | -19.9789997619383 | -158.139537608075 | 2.60 | 0.072141 |
| Harbor base | -19.9790109406433 | -158.139644400109 | 1.42 | 0.067775 |
Samples
| Sample | Type | Time CKT | Position | Photos |
|---|---|---|---|---|
| HS104A | Fossilized coral | , |
|
|
| HS104B | Fossilized coral | 2026-05-27 13:47 | -19.978971, -158.139533 2.291 m |
|
| HS104C | Fossilized coral | 2026-05-27 13:50 | -19.978913, -158.139505 3.380 m |
|
| HS104D | Fossilized coral | 2026-05-27 13:35 | -19.978895, -158.139329 6.003 m |
|
| HS104E | Fossilized coral | 2026-05-27 13:54 | -19.978891, -158.139340 6.480 m |
|
| HS104F | 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.
HS104 has photogrammetry map layers, but profile transects have not been defined yet.
Animated geology plate
Atiu, Cook Islands
Surveyed 2026-05-27
Explore the freshly excavated Taunganui harbor wall with one close view of its cemented clasts and cavities, matched to the original survey photograph.
The May 27 field notes describe lower large coral colonies and upper cemented rubble, small corals, algae and encruster horizons. The selected B view shows clast-rich irregular fabric and cavities; individual coral/encruster identities, growth positions, ages and a separating hiatus are not established by these images. Excavation striations, concrete, fencing and tree cuts are modern; loose material at the wall foot may be moved. Local ENU Z is relative only, with no reconciled sea-level datum. All 157 cameras and survey photos are present in one reviewed natural-tie network; sections and source-photo comparisons revealed no broad duplicated cliff surface in the reviewed area. Three enabled control references lack image observations; GCP4 has up to 3.26 px automatic residual and was preserved. The derived presentation crop trims trees and harbor fringe; gray walls, caps and backing are artificial. Original retained geometry and UVs and all 7 diffuse plus 7 normal 8K maps are preserved.
B · Cemented rubble and cavities: field photograph (opens in a new tab)Explore further to begin the guided tour.