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Posts tagged New Zealand

Vegetation Index of South Island and Stewart Island, New Zealand

45.5S 168.3E

February 28th, 2012 Category: Vegetation Index

New Zealand - January 8th, 2012

This FAPAR image shows the vegetation index of the southern part of New Zealand’s South Island, as well as Stewart Island (also known as Rakiura), off the southern coast. The vegetation index is generally good on the mainland and the offshore islands, as indicated by the green false-coloring.

Some areas of high activity appear rusty red, particularly on the southern plains and near the coast. The index east of the Southern Alps is slightly lower, as indicated by the yellow false-coloring, although the terrain by the Alps themselves shows a mostly good index of photosynthetic activity.

Southern Alps and Stewart Island / Rakiura, New Zealand

46.9S 167.8E

February 24th, 2012 Category: Mountains

New Zealand - January 8th, 2012

New Zealand’s Southern Alps are mostly snow free in this late summer image of the southern part of the country’s South Island. Visible by the mountains are several glacial lakes. Off the southern coast is Stewart Island/Rakiura, the third-largest island of New Zealand. It lies 30 kilometres (19 mi) south of the South Island, across Foveaux Strait.

This hilly island with a wet climate has an area of 1 746 km². The north is dominated by the swampy valley of the Freshwater River. The river rises close to the northwestern coast and flows southeastwards into the large indentation of Paterson Inlet. The highest peak is Mount Anglem (979 metres (3,212 ft)), close to the northern coast it is one of a rim of ridges that surround Freshwater Valley. The southern half is more uniformly undulating, rising to a ridge that runs south from the valley of the Rakeahua River.

Vegetation Index of New Zealand Highest Near Southern Coast

45.3S 168.0E

January 19th, 2012 Category: Vegetation Index

New Zealand - December 30th, 2011

This FAPAR image shows the vegetation index of the southern half of New Zealand’s South Island. The index is highest (rusty red) in the coastal plains by the southern shores, and lowest (yellow) amidst the ridges of the Southern Alps.

Many fjords can be observed along the southwestern coast, as can several glacial lakes in the mountains towards the center of the island (Southern Alps). A faint phytoplankton bloom can be observed off the east coast.

Bright Blue Glacial Lakes of New Zealand’s South Island

44S 170.1E

January 11th, 2012 Category: Lakes

New Zealand - January 10th, 2012

The three bright blue, roughly parallel lakes in this image of New Zealand’s South Island are (from left to right): Lake Oahu, Lake Pukaki and Lake Tekapo. They are all alpine glacial lakes in the Mackenzie Basin, near the Southern Alps. The bright blue color comes from “glacial flour”, the extremely finely ground rock particles from glaciers feeding into the lakes.

Lake Oahu is the smallest of the three, with a surface area of 60 km². Lake Tekapo is the second-largest, covering an area of 83 km². Lake Pukaki is the largest of the three, covering an area of 178.7 km². Visible at the lake’s northern end is the Tasman River.


Tauranga Harbour and Lakes Rotorua and Tarawera, New Zealand

38S 176.2E

December 25th, 2011 Category: Lakes

New Zealand - December 22nd, 2011

This orthorectified image shows the Tauranga Harbour (upper left quadrant, top), Lake Rotorua (rounded, bottom center) and Lake Tarawera (smaller, right of former) on New Zealand’s North Island. The harbour is the location of the Port of Tauranga, New Zealand’s largest export port.

Lake Rotorua is the second largest lake in the North Island of New Zealand by surface area, and covers 79.8km2. With a mean depth of only 10 metres it is considerably smaller than nearby Lake Tarawera in terms of volume of water. It is located in the Bay of Plenty region. The city of Rotorua is sited on its southern shore, and the town of Ngongotaha is at the western edge of the lake. The lake was formed from the crater of a large volcano in the Taupo Volcanic Zone.

Lake Tarawera is the largest of a series of lakes which surround the volcano Mount Tarawera in the North Island of New Zealand. Like the mountain, it lies within the Okataina caldera. It is located 18 kilometres to the east of Rotorua, and five kilometres to the west of the mountain. The lake’s surface area is 39 km².