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Australian Geoscientist Employment Survey Q4 2015

The December quarter 2015 Australian Geoscientist Employment Survey is now open for submissions.  In view of the holiday season, the survey will receive submissions until 29th January.

Please use the embedded survey form (below – requires Java) or follow this link if you experience any problems.

Sincere thanks for your ongoing support of this initiative.

 

Create your own user feedback survey

MH370 Search Delivering New Bathymetric Data

Geoscience Australia is applying specialist geophysical knowledge and capability in the search for missing flight MH370.

Geoscience Australia provides advice, expertise and support to the Australian Transportation Safety Bureau in sea floor mapping (bathymetric survey) and the underwater search.

The data acquired as part of the bathymetric survey has been collected for the sole purpose of finding the missing plane and to bring closure to the families of those on-board. However, as it is some of the first high resolution data available in these areas, it is of great interest to the scientific community and will be released to the public by Geoscience Australia in due course.

The search for MH370 includes a bathymetric survey, providing a detailed map of the sea floor topography of the search area; and an underwater search using scanning equipment or towed submersible vehicles. The information gained in the bathymetric survey is used to build a map of the sea floor in the search area, aiding navigation during the underwater search.

Bathymetric surveys were conducted from May to December 2014, collecting data over 200,000 square kilometres in the search area and producing high resolution maps of the sea floor to safely conduct the underwater search.

MH370-factsheet1-figure-1

Survey vessels undertaking the bathymetric survey used a multibeam sonarmounted on the hull to obtain measurements and produce a map charting the water depth and hardness of the sea floor. High resolution multibeam data acquisition is time-consuming. It is a little like mowing grass, where bathymetry is mapped line by line.

In general, the world’s deep oceans have had little exploration. Previous maps of the sea floor in the search area were derived from satellites and only indicated the depth of the ocean at a coarse resolution, not showing the shape of the sea floor in enough detail for safe navigation of underwater vehicles. These coarse maps provide data at a low resolution of approximately 1500 metres (per pixel), while the recent multibeam bathymetric survey collected data at 40 to 110 metres (per pixel). This newly acquired data is some of the first high resolution data available for these areas.

Find out more via the Geoscience Australia website.

New Atlas of Australia’s Great Artesian Basin

Geoscience Australia has recently released the most comprehensive mapping report on Australia’s largest groundwater basin.

The report has been developed in the form of an Atlas – providing valuable information to assist water managers and communities to make more informed decisions towards sustainable management of this vast water resource. The Hydrogeological Atlas of the Great Artesian Basin (Basin) draws together geological and hydrogeological data collected from the area and condenses it into a series of 55 maps, making the information much more accessible to water managers, researchers, industry, farmers, community groups and the general public.

Australia is the driest inhabited continent on the Earth and, per capita, is one of the largest users of water in the world. Australia draws upon a combination of surface water and groundwater for agriculture production, industry (including mining activities), and town and domestic supply. In many parts of Australia, groundwater is the only reliable water resource, and careful planning and management is critical to ensure sustainable use of this valuable water supply.

GAB AtlasThe Great Artesian Basin covers most of Queensland, the north western parts of New South Wales, part of the Northern Territory and about half of South Australia.  The Great Artesian Basin is Australia’s largest groundwater system. Comprising around 20% of Australia’s total landmass, the Basin covers most of Queensland, the north western parts of New South Wales, part of the Northern Territory and about half of South Australia. It is estimated to hold nearly 65,000 million megalitres of water, (about 130,000 Sydney Harbours) and is a key source of water for springs, many of which support unique ecosystems.

Find out more about the Atlas and its development here.