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ADMAP is a Gridmerged compilation of over 700 individual survey TMI grids, with a cell size of approximately 80 m (in fact it is 0.00833333 degrees). The first preliminary grid at this resolution with data type IEEE4ByteReal has been further processed in the Fourier domain to produce a one vertical derivative grid, called "aust_18122007_008333_vd1.ers"

The SPOT PAN data set is acquired by earth orbiting remote sensing satellites. These satellites carry two types of sensor systems known as "active" and "passive". A "passive" system generally consists of an array of small sensors or detectors which record (as digital numbers) the amount of electro-magnetic radiation reflected and/or emitted from the Earth's surface. The SPOT PAN is a passive system. The digital data acquired by the satellites are transmitted to ground stations and can be used to reconstitute an image of the Earth's surface not too dissimilar to an aerial photograph. Data are received through the ACRES antenna at the Data Acquisition Facility at Alice Springs enabling coverage of the Australian landmass. The recorded data are air-freighted daily to the Data Processing Facility in Canberra where it is catalogued and archived. SPOT-LITE was created as a result of Geoscience Australia's national mapping program. Geoscience Australia uses SPOT PAN imagery to revise its 1:250 000 scale maps. Usually two to four strips of imagery are used for each 1:250 000 map area that covers 1 degree of latitude and 1.5 degree of longitude. The imagery is acquired at near-vertical viewing angles wherever possible to minimise distortions. Each strip of imagery is geocoded, that is rectified to match ground control points which are digitised from the largest scale mapping available in the area (generally 1:25 000, 1:50 000 or 1:100 000 scales). Most SPOT-LITE tiles are also orthocorrected, that is, they have relief displacements removed through the application of Geoscience Australia GEODATA 9 second Digital Elevation Model. The three strips of imagery are then merged together to form a mosaic across the 1:250 000 map area. There may be some minor difference in visual appearance on either side of the join lines because the images were acquired on different dates with different lighting conditions and vegetation characteristics. The mosaic is divided into 24 tiles, each corresponding to a 1:50 000 map sheet area on the GDA 94 datum. Adjacent 1:250 000 areas were not mosaicked together. Because of this there may be minor differences in visual appearance between tiles on either side of a 1:250 000 sheet boundary and some minor positional mismatches. 1:250 000 sheet boundaries are clearly indicated on the SPOT-LITE catalogue with a red line.

ADMAP is a Gridmerged compilation of over 700 individual survey TMI grids, with a cell size of approximately 80 m (in fact it is 0.00833333 degrees). The first preliminary grid at this resolution with data type IEEE4ByteReal has been further processed to produce an enhanced colour image (a 3-band Unsigned8BitInteger byte file) of the TMI grid, using the rain_gomp rainbow look-up table and a north-east gradient.

ADMAP is a Gridmerged compilation of over 700 individual survey TMI grids, with a cell size of approximately 80 m (in fact it is 0.00833333 degrees). The first preliminary grid at this resolution with data type IEEE4ByteReal has been further processed to produce a grey-scale image (a one-band Unsigned8BitInteger byte file) of the 0.5 vertical derivative data.

ADMAP is a Gridmerged compilation of over 700 individual survey TMI grids, with a cell size of approximately 80 m (in fact it is 0.00833333 degrees). The first preliminary grid at this resolution with data type IEEE4ByteReal has been further processed in the Fourier domain to produce a half vertical derivative grid, called "aust_18122007_008333_vd05.ers"

The Landsat-7 picture Mosaic of Australia was produced as part of Geoscience Australia's 'Unlocking the Landsat Archive' Project. These images were primarily acquired in March 2010 ********** 07/08/15 After consulting with my manager we have decided that the product provided is incorrect and not supported by NEMO. Can you please remove the Landsat-7 Picture Mosaic Map of Australia from the website. Lien Lien Ly Team Leader - Product Generation | National Earth and Marine Observation Group

MODIS (Moderate Resolution Imaging Spectroradiometer) is the key instrument aboard the satellites Terra (EOS AM-1), launched on 18 December 1999 and Aqua (EOS PM-1), launched on 4 May 2002. MODIS views almost the entire surface of the Earth every day, acquiring data in 36 spectral bands over a 2330 km swath. MODIS data will improve the understanding of global dynamics and processes occurring on the land, in the oceans, and in the lower atmosphere. ACRES has been acquiring MODIS data since April 2000 and December 2002 from TERRA and ACQUA satellites respectively. Registered users can download this data free of cost from ACRES web site.

Includes copy of AGSO Record 1997/20

Includes copy of AGSO Record 1997/20