Chatham Island
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Chatham Island ( ) ( Moriori: , 'Misty Sun'; ) is the largest island of the Chatham Islands group, in the south Pacific Ocean off the eastern coast of
New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
's
South Island The South Island ( , 'the waters of Pounamu, Greenstone') is the largest of the three major islands of New Zealand by surface area, the others being the smaller but more populous North Island and Stewart Island. It is bordered to the north by ...
. It is said to be "halfway between the
equator The equator is the circle of latitude that divides Earth into the Northern Hemisphere, Northern and Southern Hemisphere, Southern Hemispheres of Earth, hemispheres. It is an imaginary line located at 0 degrees latitude, about in circumferen ...
and the pole, and right on the International Date Line", although that point is 173 miles WSW of the island's westernmost point. The island is called ''Rekohu'' ("misty skies") in Moriori, and ''Wharekauri'' in Māori.Government of New Zealand, Dept. of Conservation (1999)
Chatham IslandsConservation Management Strategy
''. Retrieved 13 July 2012.
The island was named after the survey ship HMS ''Chatham'' which was the first European ship to locate the island in 1791. It covers an area of . Chatham Island lies south-east of Cape Turnagain, the nearest point of mainland New Zealand to the island.


Geography

The geography of the roughly T-shaped island is dominated by three features: two bays and a lagoon. More than half of the west coast of Chatham is taken up by the deep indentation of Petre Bay. The island's main settlement of Waitangi is located in a small indentation in Petre Bay's southern coast. Other significant settlements are Kaingaroa on the northeast promontory, and Owenga on the south side of Hanson Bay. On the east coast is the even larger Hanson Bay, which stretches for the entire length of the island (). Much of the area between the bays is taken up by the large Te Whanga Lagoon, which drains to the sea to the east, into the southern half of Hanson Bay. This lagoon covers about , and drains several small rivers that rise in the hills at the south end of the island. The next largest lakes are Rangitahi and Huro, respectively northeast and southwest of Te Whanga.
Chatham Island
', NZ Topo Map. Retrieved 14 July 2012.
The central and north part of Chatham Island are mostly flat, with altitudes ranging from a few metres on the northeast and centre to 50 m on the northwest, but with a few scattered hillocks. The south part is higher, generally sloping down towards north and west; about half of it is over 150 m above sea level. The south coast of the island is mostly cliffs 100 m high or more. The highest point of the island (299 m) lies close to its southernmost point.


Climate

Chatham Island has an oceanic climate (
Koppen Koppen is a surname. Notable people with the surname include: * Dan Koppen (born 1979), American football offensive lineman * (1929–1990), German literary scholar * (1855–1922), German author * Otto C. Koppen (1901–1991), American aircraf ...
: ''Cfb'') characterised by a narrow temperature range and relatively frequent rainfall. Their isolated position far from any sizeable landmass renders the record high temperature for the main settlement (Waitangi) just . The climate is cool, wet and windy, with average high temperatures between in summer, and between in July (in the Southern Hemisphere winter). Snowfall is extremely rare, the fall recorded near sea level in July 2015 marking the first such reading for several decades. Under the Trewartha climate classification, Chatham Island has a
humid subtropical climate A humid subtropical climate is a subtropical -temperate climate type, characterized by long and hot summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between ...
(Cf) for the lack of cold weather during the winter and a daily mean temperature above for eight months or more.


Flora and fauna

Chatham Island hosts the only known breeding population of the
endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
and critically endangered magenta petrel or tāiko (''Pterodroma magentae''). The seabird was thought to be extinct until 1978, and had a population of under 200 in 2017. The indicated year is based on the change in the specified population in the preceding archived webpage.


In popular culture

Chatham Island (or "Isle") is featured in the first and in the final chapter of '' Cloud Atlas'', the 2004 novel by David Mitchell. The novel was adapted for screen in 2012.


See also

* Chatham Standard Time Zone * List of islands of New Zealand


References


External links


An 1841 account of the Chatham Islands
{{Chatham Islands Islands of the Chatham Islands