Undersea Feature Names




NEW ZEALAND GAZETTE, No. 118

29 AUGUST 2013

Feature Type
Aorangi Ridge Ridge
Aorangi Trough Trough
Bennett Knoll Knoll
Bounty Plateau Plateau
Campbell Bank Bank
Cavalli Seamount Seamount
Colville Canyon Canyon
Colville Knolls Knolls
Cook Canyon Canyon
Cook Strait Canyon Canyon
Fiordland Basin Basin
Gable Ridge Ridge
Gobey Bank Bank
Haast Canyon Canyon
Hawke Sea Valley Valley
Hikurangi Plateau Plateau

Aorangi Ridge

Ridge
41°31.00'S Latitude, 176°52.00'E Longitude. A ridge trending north-east south-west at the bottom of the continental slope, 80km off the Wairarapa coast. Rises about 400m above the surrounding seabed to a depth of 2300m. Depicted on Palliser Chart©, Mitchell, 1988; Cook Chart©, Baldwin & Lewis, 1991; Central Hikurangi Chart©, Lewis et al., 1999.

Aorangi Trough

Trough
41°31.00'S Latitude, 176°46.00'E Longitude. A trough trending north-east south-west on the lower continental slope between the Aorangi Ridge to the east and Pukeroro Ridge to the west. To the south it opens out into the Hikurangi Trench. Flat floor at about 2800m. Depicted on Palliser Chart©, Mitchell, 1988.

Bennett Knoll

Knoll
41°05.00'S Latitude, 178°15.00'E Longitude. A knoll on the Hikurangi Margin off the Wairarapa continental slope. Depicted on Cook Chart©, Baldwin & Lewis, 1991; Central Hikurangi Chart©, Lewis et al., 1999.

Bounty Plateau

Plateau
48°00.00'S Latitude, 179°00.00'E Longitude. A large undersea plateau that rises between the Bounty and Antipodes Islands. Separated from the remainder of the Campbell Plateau by the Pukaki Saddle. Formerly Bounty Platform. This position is given for Bounty Plateau in IHO/IOC (1988). Depicted on NZ Region Chart©, Carter, 1980; NZ Region Chart©, CANZ, 1997.

Campbell Bank

Bank
41°46.00'S Latitude, 174°45.00'E Longitude. A bank on the outer part of the continental shelf of north-eastern South Island. Rises from a surrounding 150m deep shelf to a minimum depth of 95m. Depicted on Palliser Chart©, Pantin, 1961; Palliser Chart©, Mitchell, 1988; Campbell Chart©, Mitchell, 1988.

Cavalli Seamount

Seamount
34°08.00'S Latitude, 174°05.00'E Longitude. An irregular-shaped, flat-topped seamount on the Northland Plateau. This is an isolated conical seamount which rises to 500m from a depth of 1800m. Depicted on North Cape Chart©, Mitchell & Eade, 1990.

Colville Canyon

Canyon
36°10.00'S Latitude, 176°38.00'E Longitude. A north-east south-west trending canyon to the north-west of Colville Knolls and south-east of Rakitu Canyon on the outer part of Bay of Plenty. Reaches a depth of 1750m. Depicted on Cuvier Chart©, Wright, 1989.

Colville Knolls

Knolls
36°09.84'S Latitude, 176°47.58'E Longitude. A dual-peaked knoll north-east of Great Barrier Island (Aotea Island). Rises to 735m from a depth of 1700m and has an area of 35.00km². Depicted on Cuvier Chart©, Carter, 1976; Cuvier Chart©, Wright, 1989; Cook Chart©, Baldwin & Lewis, 1991.

Cook Canyon

Canyon
42°42.50'S Latitude, 168°23.80'E Longitude. Canyon complex originating off the Cook River / Weheka, West Coast, South Island, and wandering across the continental shelf and slope until merging with the Hokitika Canyon to form the Cook Channel. Depicted on Resolution Chart©, van der Linden & Hayes, 1972; Hokitika Chart©, Eade, 1972; Jackson Chart©, Carter, 1981.

Cook Strait Canyon

Canyon
41°37.00'S Latitude, 174°50.00'E Longitude. A sinuous, much-branched canyon, generally trending north-west south-east on the south-eastern part of Cook Strait. Axis ranges in depth from about 200m-2500m at the point where it joins the Hikurangi Trench. Depicted on Palliser Chart©, Pantin, 1961; Cook Chart©, van der Linden, 1968; Campbell Chart©, Mitchell, 1988; Cook Chart©, Baldwin & Lewis, 1991.

Fiordland Basin

Basin
45°35.00'S Latitude, 165°45.00'E Longitude. A basin extending southward towards Puysegur Bank. The northern part ends against a seaward extension of the continental slope. It trends parallel to, and 50km from, the coast. Sill to the Tasman Basin is 550m above the deepest part of the basin. Depicted on Resolution Chart©, van der Linden & Hayes, 1972; Dusky Chart©, Mitchell & Garlick, 2001.

Gable Ridge

Ridge
38°31.00'S Latitude, 178°49.00'E Longitude. A ridge that trends parallel with the coast. Rises to a minimum recorded depth of 630m. Depicted on Mahia Chart©, Arron & Lewis, 1992.

Gobey Bank

Bank
33°42.50'S Latitude, 171°50.00'E Longitude. This name has been used following the nomenclature on the relevant hydrographic chart. Depicted on Three Kings Chart©, Mitchell & Eade, 1990; NZ41.

Haast Canyon

Canyon
43°40.70'S Latitude, 168°53.60'E Longitude. A canyon originating off the Haast River running off the shelf until it merges into Moeraki Canyon. Axis ranges in depth from about 200m-4600m. Depicted on Resolution Chart©, van der Linden & Hayes, 1972; Jackson Chart©, Carter, 1981.

Hawke Sea Valley

Valley
39°37.53'S Latitude, 177°53.73'E Longitude. A valley that trends south-eastward on the upper continental slope off Hawke Bay. Axis extends from a depth of 200m to a depth of 1000m. Depicted on Mahia Chart©, Pantin, 1961; Turnagain Chart©, Lewis, 1976; Mahia Chart©, Arron & Lewis, 1992.

Hikurangi Plateau

Plateau
37°48.21'S Latitude, 178°42.93'W Longitude. A seamount studded plain extending northwards from the base of the Chatham Rise to the Kermadec Trench. Depths typically range over 3250m-3750m before increasing near the Kermadec Trench. Depicted on Lachlan Chart©, Carter, 1995; NZ Region Chart©, CANZ, 1997.



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Gazette.govt.nz PDF NZ Gazette 2013, No 118





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🎓 Notice of Adopted Undersea Feature Names (continued from previous page)

🎓 Education, Culture & Science
29 August 2013
Geographic Names, Undersea Features, New Zealand Geographic Board, Aorangi Ridge, Aorangi Trough, Bennett Knoll, Bounty Plateau, Campbell Bank, Cavalli Seamount, Colville Canyon, Colville Knolls, Cook Canyon, Cook Strait Canyon, Fiordland Basin, Gable Ridge, Gobey Bank, Haast Canyon, Hawke Sea Valley, Hikurangi Plateau