 Onotoa Guyot |    |
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| Index | SMNT-019S-1756E |
Classification | Intermediate C3 Guyot |
| Location | 1º 55.80' S
175º 33.02' E |
Elongation
Irregularity | 2.10 ± 0.09
1.48 ± 0.05 |
| Plate Age | 126.5 - 128.8 Ma |
Oceanic Province | Abyssal Plain |
| Region | Gilberts Ridge |
Alternative Names | |
| Plate | Pacific Plate |
Age | |
| Tectonic Setting | Hotspot Trail |
Seamount Top | 305 m |
| Volume | 7058 km3 |
Ocean Bottom | 4295 m |
Shelf Edge
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Volcanic Activity | Extinct |
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| | Description | | Onotoa Atoll is located at 1¿ 55.8' S, 175¿ 33.0' E and is part of the Gilberts Ridge region on the Pacific Plate. It is 4113 m high with the top at -700 m and the ocean bottom at -4813 m. The atoll has a volume of 11232 km3 and is moderately elongated with an azimuth of approximately 163¿. The edges are irregular and the top is relatively flat with the highest point along the eastern side. A saddle to the south connects Onotoa to Tuba Seamount. |
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Onotoa Guyot -- Multibeam data merged with predicted satellite bathymetry |
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Onotoa Guyot -- Multibeam bathymetry |
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Onotoa Guyot -- Predicted satellite bathymetry |
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Onotoa Guyot -- Residual bathymetry |
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Gilberts Ridge -- Multibeam data merged with predicted satellite bathymetry |
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Gilberts Ridge -- Multibeam bathymetry |
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Gilberts Ridge -- Predicted satellite bathymetry |
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Gilberts Ridge -- Residual bathymetry |
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Onotoa Guyot -- Multibeam data merged with predicted satellite bathymetry |
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Onotoa Guyot -- Multibeam bathymetry |
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Onotoa Guyot -- Predicted satellite bathymetry |
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Onotoa Guyot -- Residual bathymetry |
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Gilberts Ridge -- Multibeam data merged with predicted satellite bathymetry |
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Gilberts Ridge -- Multibeam bathymetry |
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Gilberts Ridge -- Predicted satellite bathymetry |
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Gilberts Ridge -- Residual bathymetry |
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| Depth |
Azimuth |
Area |
Length |
Width |
Elongation |
Contour |
Ellipse |
Irregularity |
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| m |
degrees |
km2 |
km |
km |
ratio |
km |
km |
ratio |
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| 2300 |
164.9 |
779.4 |
58.9 |
26.8 |
2.202 |
161.7 |
110.5 |
1.464 |
| 2699 |
161.9 |
1013.2 |
64.2 |
30.6 |
2.097 |
190.1 |
124.4 |
1.528 |
| 3098 |
164.4 |
1301.3 |
68.0 |
33.7 |
2.015 |
200.7 |
139.6 |
1.438 |
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| 33 % Multibeam Coverage |
2.10 ± 0.09 |
1.48 ± 0.05 |
| 3990 m High |
| 2 Summits |
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