✨ Undersea Feature Names
NEW ZEALAND GAZETTE, No. 86
19 JULY 2012
The Board’s final determination on these adopted undersea features names take effect on 19 July 2012.
Schedule
Adopted Undersea Feature Names (58)
| First Column | Second Column | Third Column |
|---|---|---|
| Official Undersea | Undersea | Description |
| Feature Name | Feature Type | |
| Aotea Seamount | Seamount | 37°30.62’S Latitude, 172°10.79’E Longitude. An irregular-topped, isolated seamount rising to 900m from a depth of 2150m, located in New Caledonia Trough. Depicted on Cook Chart©, Baldwin & Lewis, 1991. |
| Balleny Seamount | Seamount | 65°30’S Latitude, 161°00’E Longitude. Located north-west of Balleny Islands, Ross Dependency. Depicted on NZ 14912, NZ 14900, NZ 14065. |
| Bellona Gap | Gap | 37°15’S Latitude, 166°30’E Longitude to 36°20’S Latitude, 167°12’E Longitude. A gap on the seafloor, falling to a depth of 1500m and separating Challenger Plateau from Lord Howe Rise. Located approximately 480km west of New Zealand. Depicted on NZ 14600; NZ 14601; Tectonic map of the Southwest Pacific©, Cullen 1970; Bellona Bathymetry©, Carter & Eade, 1979. |
| Bellona Trough | Trough | 40°20’S Latitude, 165°45’E Longitude. A north-south trending trough, descending to a depth of 4250m at the southern end, located on the western edge of the Challenger Plateau that runs south from Bellona Gap. Depicted on Bellona Chart©, Eade & van der Linden 1977; NZ 24. |
| Bounty Channel | Channel | 45°15’S Latitude, 172°00’E Longitude; 46°15’S Latitude, 179°00’W Longitude. A narrow and steep-sided channel that cuts into the axis of Bounty Trough with numerous tributaries rising on the outer continental shelf off of Otago, on Campbell Plateau and on Chatham Rise. Depicted on Bounty Chart©, Krause & Cullen, 1970; NZ Region Bathymetry©, CANZ 2008. |
| Bounty Fan | Fan | 47°00’S Latitude, 175°00’W Longitude. A trough-head fan connected to Bounty Trough by the deep sea Bounty Channel. Depicted on Carter & Carter, 1987; Carter 1989. |
| Bounty Trough | Trough | 44°30’S Latitude, 172°00’E Longitude; 48°00’S Latitude, 177°00’W Longitude. A broad depression 800km long by 250km wide between the Chatham Rise and the Bounty Islands, and extending from the continental shelf, east of the South Island, to the deep ocean south of the Chatham Islands. Depicted on NZ 14065, 1997; NZ 224, 1999; NZ 14600; NZ 14601; Bounty Chart©, Krause & Cullen, 1970; and NZ Region Bathymetry©, CANZ 2008. |
| Brodie Canyon | Canyon | 46°20.37’S Latitude, 170°36.44’E Longitude. A canyon extending from a depth of 300m to about 780m, located on the Otago shelf. Depicted on Otago Chart©, Carter, 1986. |
| Burt Bank | Bank | 34°19’S Latitude, 172°19’E Longitude. A bank with shoals to 82m in the Johnson Trough, between Three Kings Islands and Cape Reinga. Depicted on INT41. |
| Clark Seamount | Seamount | 36°28.12’S Latitude, 177°51.49’E Longitude. A volcanic seamount with an area of 56.30 sq kms, rising to 860m from a depth of 2500m, located in the Southern Havre Trough. Depicted on Gamble et al., 1993; Gamble et al., 1996; Wright et al., 1996; Gamble et al., 1997; Wright et al., 2002. |
| Devonport Seamount | Seamount | 31°33.58’S Latitude, 175°22.84’E Longitude. A seamount with an area of 222.10 sq kms, rising to 1201m from a depth of 3750m, located in the South Fiji Basin, west of Three Kings Ridge. Depicted on NZ 14060, NZ 14061, NZ 14605 and NZ 223F. |
| Dusky Ridge | Ridge | 45°50’S Latitude, 165°47’E Longitude. A north-east–south-west trending ridge, rising from more than 3000m to crest at 2600m, located at the southern end of the Fiordland Basin, offshore south-west of New Zealand. Depicted on Dusky Chart©, Mitchell & Garlick, 2001. |
| East Cape Ridge | Ridge | 37°13’S Latitude, 179°37’E Longitude. A ridge extending 150km north-north-east from the mid-continental slope off East Cape and separating the 2400m deep Raukumara Plain from the 4000–5000m deep Hikurangi Trench. The crest is generally 1000–1500m deep. Depicted on Brodie, 1964; Cook Chart©, van der Linden, 1968 and Baldwin & Lewis, 1991. |
| Gable Trough | Trough | 38°36’S Latitude, 178°43’E Longitude. A trough aligned north-north-east–south-south-west approximately 15km long and 950m deep, located between the continental slope to the west and Gable Ridge to the east, Poverty Bay Slope, North Island. Depicted on Mahia Chart©, Arron & Lewis, 1991. |
| George Ridge | Ridge | 44°42’S Latitude, 166°56’E Longitude. An almost north-south aligned ridge, appearing to rise from 3550m in the west with two crests at 2150m and 2250m, located west of Bligh Basin offshore from Fiordland. Depicted on Milford Chart©, Garlick et al., 2001. |
| Gilbert Seamount | Seamount | 42°52.30’S Latitude, 164°04’E Longitude. A large seamount with an area of 12,434.20 sq kms, rising to 2322m from a depth of 4396m, located at the southern edge of the Lord Howe Rise continental slope. Depicted on CANZ 2007. |
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NZ Gazette 2012, No 86
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Notice of Adopted Undersea Feature Names
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🗺️ Lands, Settlement & Survey19 July 2012
Undersea Features, Naming, Geographic Board, Adoption