 Nikunau Seamount |    |
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| Index | SMNT-014S-1765E |
Classification | Intermediate C3 Seamount |
| Location | 1º 23.88' S
176º 26.30' E |
Elongation
Irregularity | 2.29 ± 0.16
1.48 ± 0.23 |
| Plate Age | 127.1 - 129.4 Ma |
Oceanic Province | Abyssal Plain |
| Region | Gilberts Ridge |
Alternative Names | |
| Plate | Pacific Plate |
Age | |
| Tectonic Setting | Hotspot Trail |
Seamount Top | 1040 m |
| Volume | 6872 km3 |
Ocean Bottom | 4885 m |
Shelf Edge
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Volcanic Activity | Extinct |
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| | Description | | Nikunau Atoll is located at 1¿ 23.9' S, 176¿ 26.0' E and is part of the Gilberts Ridge region on the Pacific Plate. It is 3767 m high with the top at -1100 m and ocean bottom at -4867 m. The seamount has a volume of 8668 km3 and displays a bent elbow shape pointing to the west and southeast. It is elongated with an azimuth of approximately 129¿. The edges are irregular and the two major rifts defining the seamount are running west and southeast respectively. These rifts also affect Beru Seamount, which is connected to Nikunau by a saddle with a depth of -2800 m. |
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Nikunau Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Nikunau Seamount -- Multibeam bathymetry |
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Nikunau Seamount -- Predicted satellite bathymetry |
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Nikunau Seamount -- 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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Nikunau Seamount -- Multibeam data merged with predicted satellite bathymetry |
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Nikunau Seamount -- Multibeam bathymetry |
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Nikunau Seamount -- Predicted satellite bathymetry |
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Nikunau Seamount -- 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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| 2578 |
129.5 |
708.7 |
57.2 |
27.1 |
2.109 |
180.5 |
104.2 |
1.732 |
| 2963 |
129.9 |
1010.9 |
65.6 |
27.4 |
2.396 |
185.8 |
128.8 |
1.443 |
| 3347 |
131.5 |
1339.8 |
70.5 |
29.8 |
2.365 |
187.8 |
147.7 |
1.271 |
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| 23 % Multibeam Coverage |
2.29 ± 0.16 |
1.48 ± 0.23 |
| 3845 m High |
| 1 Summit |
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