Earth Snapshot RSS Feed Twitter
 
 
 
 

Posts tagged Tanami Desert

Lakes Gregory and Mackay, Western Australia

20.2S 127.4E

March 27th, 2013 Category: Lakes

Australia – March 26th, 2013

Two lakes can be seen in this image of Western Australia: Lake Mackay (below) and Lake Gregory (upper left corner). The former is a large, ephemeral salt lake by the Great Sandy Desert, Gibson Desert, and Tanami Desert.

Lake Gregory (aka Paraku) is an inland drainage lake situated in north-eastern Western Australia between the Great Sandy Desert and the Tanami Desert. It is usually fresh water, but can become saline after a number of dry years. It has a fairly regular inflow of water and is considered to be a permanent lake.

Flora and Vegetation Index of the Kimberley Region, Western Australia

April 19th, 2010 Category: Vegetation Index

Australia - March 5th, 2010

Australia - March 5th, 2010

The Kimberley is one of the nine regions of Western Australia. It is located in the northern part of Western Australia, bordered on the west by the Indian Ocean, on the north by the Timor Sea, on the south by the Great Sandy and Tanami Deserts, and on the east by the Northern Territory.

This more arid geography to the south is mirrored in this FAPAR image:  southern areas appear yellow, indicating low photosynthetic activity, while coastal areas appear green, thus showing a good vegetation index.

With regards to flora, much of the Kimberley is chiefly covered in open savanna woodland dominated by low bloodwood and boab trees with Darwin stringybark and Darwin woollybutt eucalypts in the wetter areas.

The red sandy soil of the Dampier Peninsula in the south is known for its characteristic pindan wooded grassland while in the more fertile areas like the Ord valley the trees are grasslands of Chrysopogon, Aristida, Dicanthium and Xerochloa (rice grass) in the wetter valleys.

The banks of the Ord, Fitzroy and other rivers are home to a greater variety of vegetation while in sheltered gorges of the high rainfall north there are patches of rainforest. There are also areas of mangrove in river estuaries where the coast is flatter.

Multi-Braided Channels Leading to Lake Gregory, Australia – April 16th, 2010

25.6S 120.0E

April 16th, 2010 Category: Image of the day, Lakes, Rivers

Australia - March 5th, 2010

Australia - March 5th, 2010

Lake Gregory (green, lower left quadrant) is an inland drainage lake situated in northeastern Western Australia between the Great Sandy Desert and the Tanami Desert. It is usually fresh water, but can become saline after a number of dry years. The surrounding landscape consists of grasslands with numerous sand ridges.

It has a fairly regular inflow of water and is considered to be a permanent lake, serving as a major migratory stop-over area for a variety of shorebirds. The lake also provides a major breeding habitat of several species of water birds, including cormorants and terns.

Here, multi-braided channels can be seen feeding water into into Lake Gregory. These channels are part of the Sturt Creek drainage system. When there is an excess of standing water in the channels, they take on a tan or yellow, muddy-looking appearance, generally north and west of the main part of the lake. In this image, however, there does not appear to be much excess water in the channels.

Lake Gregory is situated on the edge of Mulan Aboriginal Community, home to the Walmajarri people. The lake is a traditional site to the people, housing a number of significant cultural locations. The Paraku IPA (Indigenous Protected Area) works with traditional owners and rangers to monitor and maintain the lake and its surroundings.

Colors of Lake Mackay, Western Australia

22.5S 128.6E

November 26th, 2009 Category: Lakes

Australia - November 24th, 2009

Australia - November 24th, 2009

Lake Mackay is one of hundreds of dry lakebeds scattered throughout Western Australia and the Northern Territory. In addition to the lake, the image also shows the dry appearance of Western Australia’s Great Sandy Desert, Gibson Desert, and Tanami Desert.

Lake Mackay measures approximately 60 miles (100 kilometers) east-west and north-south. The lake is the largest in Western Australia and has a surface area of 3,494 square kilometres (1,349 sq mi).

In this arid environment, salts and other minerals are carried to the surface through capillary action caused by evaporation, thereby producing the white reflective surface.

The darker, greyish areas of the lakebed are indicative of some form of desert vegetation or algae, some moisture within the soils of the dry lake, and the lowest elevations where pooling of water occurs.

The orange dots, on the other hand, are hills scattered across the eastern half of the lake and east-west-oriented sand ridges south of the lake.

About Us

Earth Observation

Organisations

Archive

February 2019
M T W T F S S
« Mar    
 123
45678910
11121314151617
18192021222324
25262728  

Categories


Bulletin Board


Featured Posts

Information

07


Take Action

Widgets