Pursuant to sections 25 and 21(2) of the New Zealand Geographic Board (Nga Pou Taunaha o Aotearoa) Act 2008, the
New Zealand Geographic Board Nga Pou Taunaha o Aotearoa ("Board") hereby gives notice of assigned, altered and discontinued undersea feature names beyond New Zealand’s 12 Nautical Mile Territorial Sea.
The details of the assigned, altered and discontinued undersea feature names, their undersea generic feature types, and their descriptions, are specified in the three columns of the Schedule below.
The Board’s final determinations on these undersea features names, take effect on 19 July 2012.
Schedule
Assigned, Altered and Discontinued Undersea Feature Names Beyond New Zealand’s 12 Nautical Mile Territorial Sea
Assigned, Altered and Discontinued Undersea Feature Name Undersea Generic Feature Type Description
Ballance Seamount Seamount E Latitude: S Longitude:
174.62793174 34.04112344
174.80234495 33.97138547
174.90650658 33.97280328
174.99845653 34.05916214
174.97416750 34.18010156
174.82847172 34.14933192
174.74947057 34.04693127
174.63242787 34.06044449
An irregular shaped seamount on the Northland Plateau, measuring 24km by
19km, with a maximum depth of 2000m and minimum depth of 800m, located approximately 150km north-east of Great Exhibition Bay. Chart NZ51, North Cape Bathymetry©, J.S. Mitchell & J.V. Eade, 1990. Assigning a new name for an unnamed undersea feature.
East Ngatoro Knoll Knoll 37°02.99'S Latitude, 177°05.99'E Longitude. An isolated conical seamount with an area of 9.10 sq kms, rising to 1450m from a depth of 1950m, located in the outer Bay of Plenty. Depicted on Bay of Plenty Chart©, Wright, 1989. Spelling alteration from East Ngatoro Knoll.
Karitane Canyon Canyon 45°38'S Latitude, 171°10.94'E Longitude. A canyon extending from a depth of approximately 80m to a depth of approximately 1000m, forming one of the tributaries of the North Channel of the Bounty Trough, located on the Otago shelf. Depicted on Otago Chart©, Brodie, 1970; Oamaru Chart©, Carter & Carter, 1981; Otago Chart, Carter, 1986. Spelling alteration from Karitane Canyon.
Karitane Channel Channel 45°45'S Latitude, 171°45'E Longitude. A channel, with a floor depth as deep as 1700m that is the southern tributary that flows northwards into the North Bounty Channel, located off the East Coast of the South Island. Depicted on Oamaru Chart©, Carter & Carter, 1981. Spelling alteration from Karitane Channel.
Kekerengu Bank Bank 42°13.90'S Latitude, 174°24.13'E Longitude. A bank rising from seafloor depths
of 1450m and cresting at 700m, located on the continental shelf due south of
Cape Campbell, Kaikoura Shelf. Depicted on Campbell Chart, Mitchell, 1988; Cook Chart, Baldwin & Lewis, 1991. Spelling alteration from Kekerengu Bank.
Mokohinau Knoll Knoll 35°43.26'S Latitude, 176°13.09'E Longitude. An isolated conical seamount which rises to 600m from a depth of 800m, located in the northern Bay of Plenty area. Depicted on Cuvier Chart©, Carter, 1976. Spelling alteration from Mokohinau Knoll.
Ngatoro Basin Basin 36°30'S Latitude, 177°15'E Longitude. A small deep depression, with the floor at a depth of between 3200m and 3300m, extending from 60km to 150km north-east of Mayor Island, and trending north-east-south-west at the foot of the continental slope off the Bay of Plenty. Depicted on Cook Chart©, van der Linden, 1968; Cuvier Chart©, Carter, 1976; Cuvier Chart©, Wright, 1989; Havre Trough Chart©, Wright, 1990; Cook Chart©, Baldwin & Lewis, 1991. Spelling alteration from Ngatoro Basin.
Ngatoro Canyon Canyon 36°50'S Latitude, 176°50'E Longitude. A canyon reaching depths of approximately 1950m, located at the southwestern end of Ngatoro Basin, north-west of Tauranga Trough, Bay of Plenty. Depicted on Cuvier Chart©, Wright, 1989. Spelling alteration from Ngatoro Canyon.
Ngatoro Ridge Ridge 37°03.89'S Latitude, 177°20.24'E Longitude. A ridge with three main crests: Waioeka, Waitotahi, and Nukuhou Knolls, aligned north-east-south-west between the Tauranga Trough to the north-west and White Island Trough to the south-east. Depicted on Bay of Plenty Chart©, Pantin, et al., 1973; Bay of Plenty Chart©, Wright, 1989; Havre Trough Chart©, Wright, 1990. Spelling alteration from Ngatoro Ridge.
North Paritu Ridge Ridge 38°57.45'S Latitude, 178°43.23'E Longitude. A ridge complex with a north-east-south-west alignment, rising to 840m from 1500m, separated from the South Paritu Ridge by the Paritu Trough, located on the Poverty Bay slope, North Island. Depicted on Mahia Chart©, Arron & Lewis, 1991. Spelling alteration from North Paritu Ridge.
Omakere Trough Trough 40°00'S Latitude, 177°40'E Longitude. Depression in the sea floor at a depth of 2200m, located on the lower continental slope, 90km off southern Hawke’s Bay. Depicted on Turnagain Chart©, Garlick & Mitchell, 2000. Spelling alteration from Omakere Trough.
Otara Knoll Knoll 36°57'S Latitude, 177°20.99'E Longitude. An isolated conical seamount with an area of 22.60 sq kms, rising to 1060m from a depth of 1900m, located at the north eastern end of the Ngatoro Ridge, Bay of Plenty. Depicted on Bay of Plenty Chart©, Wright, 1989. Spelling alteration from Otara Knoll.
Pukaki Bank Bank 49°15'S Latitude, 171°45'E Longitude. A bank rising gently from the surrounding 400-600m deep plateau to a flat top about 30km in diameter, at a depth of
130-140m with a minimum recorded depth of 60m. The shoalest part of Pukaki Rise located on the northern edge of the Campbell Plateau, numerous steep-sided pinnacles rise from this flat top. Depicted on NZ 29; Brodie, 1964a; Campbell Chart©, Summerhayes, 1967. Spelling alteration from Pukaki Bank.
Pukaki Rise Rise 49°30'S Latitude, 171°40'E Longitude. An elevated region along the northern edge of the Campbell Plateau, with a crest generally about 450m deep, the Pukaki Bank at its eastern end being its shoalest part. Located on the Campbell Plateau. Depicted on NZ 29; NZ 14060; NZ 14061; NZ 14601; Summerhayes, 1969a; Campbell Chart©, Summerhayes, 1967; NZ Region Chart©, Carter, 1980. Spelling alteration from Pukaki Rise.
Pukaki Seamount
Discontinued Seamount 49°30'S Latitude, 176°05'E Longitude. Chart NZ29. The feature cannot be located on the Campbell Plateau and is not on any historical or recent chart. Bathymetric surveys show that the feature does not exist. No longer a recorded undersea feature name, and so is discontinued.
Rakitu Canyon Canyon 35°55.94'S Latitude, 176°30'E Longitude. An east-south-east trending canyon approximately 18km long with a maximum recorded depth of over 1600m, leading to Colville Ridge, Coromandel. Depicted on Cuvier Chart©, Carter, 1976; Cuvier Chart©, Wright, 1989. Spelling alteration from Rakitu Canyon.
Ruatoria Knoll Knoll 38°21'S Latitude, 179°35'E Longitude. A knoll rising from a depth of 3000m to 2500m that is part of a landslide debris flow from the Ruatoria Re-entrant, East Cape slope, North Island. Depicted on Cook Chart©, Baldwin & Lewis, 1991. Spelling alteration from Ruatoria Knoll.
South Paritu Ridge Ridge 39°06.61'S Latitude, 178°36.02'E Longitude. An undersea ridge with elongated flat top and crests at 1250m rising from 1500m, aligned north-east-south-west, located south of the head of the Paritu Trough, Poverty Bay slope, North Island. Depicted on Mahia Chart©, Arron & Lewis, 1991. Spelling alteration from South Paritu Ridge.
Tui Seamount Seamount 30°23.15'S Latitude, 172°56.55'E Longitude. An isolated conical seamount with an area of 616.30 sq kms, rising to 406m from a depth of 1409m. Located
on the eastern flank of Three Kings Ridge. Depicted on NZ 223F; NZ 14060;
NZ 14065; NZ 14605; Three Kings Chart©, van der Linden, 1968; Terrill
& Packham, 1974. Spelling alteration from Tui Seamount.
Taranui Valley
Discontinued Valley 32°25'S Latitude, 168°10'E Longitude. Chart NZ14600. Lord Howe Chart© 1968 and Wanganella Bank Chart© 1972. The feature cannot be located on the South Norfolk Basin and does not exist. No longer a recorded undersea feature name, and so is discontinued.
Whakatane Sea Valleys Sea Valleys 37°33'S Latitude, 176°49'E Longitude. Two sea valleys between 500m and 650m deep, trending north-east off the continental shelf merging into the Tauranga Canyon, Bay of Plenty. Depicted on Bay of Plenty Chart©, Pantin et al., 1973; Bay of Plenty Chart©, Wright, 1989; Cook Chart©, Baldwin & Lewis, 1991. Spelling alteration from Whakatane Sea Valleys.
Whakatane Seamount Seamount 36°48.67'S Latitude, 177°27.94'E Longitude. A seamount with an area of 88 sq kms, rising to 880m from a depth of 2196m that is part of a conical seamount chain north of Ngatoro Ridge, and east of the Ngatoro Basin, within the outer Bay of Plenty-southern Havre Trough. Depicted on Wright et al., 1990; Havre Trough Chart©, Wright, 1990; Cook Chart©, Baldwin & Lewis, 1991. Spelling alteration from Whakatane Seamount.
Whangape Bank Bank 35°27'S Latitude, 172°30'E Longitude. A bank with the crest at 450m depth, located offshore of the Western Northland Slope, north-west New Zealand. Depicted on Hokianga Chart©, Irwin & Eade, 1984. Spelling alteration from Whangape Bank.
Dated at Wellington this 19th day of July 2012.
W. K. SHAW, Secretary, New Zealand Geographic Board Nga Pou Taunaha o Aotearoa.