Abstract

This data package contains three airborne geophysical datasets processed from the Billabong Creek Geophysical survey, southern New South Wales, flown in 2001. The datasets are: a new Geoscience Australia layered earth inversion (GA-LEI) of the Billabong Creek TEMPEST Airborne Electromagnetic (AEM) survey; an airborne magnetic, gamma-ray and elevation (MAGSPEC) survey; and an extract of the Australian National Gravity Database (GRAVITY). The additional processing and enhancement of the 2001 geophysical survey data has significantly improved previous conductivity predictions as well as enabling the extraction of geologically significant information to support salinity and natural resource management. This metadata briefly describes the contents of the data package. The user guide included in the package contains more detailed information about the individual datasets and available technical reports. The AEM dataset comprises the final Geoscience Australia layered earth inversion (GA-LEI) of the 2001 Billabong Creek TEMPEST AEM survey, produced in 2008. The main data products from the GA-LEI inversion are: point located inversion output data; horizontal layer conductivity grids below ground surface; horizontal conductivity-depth slice grids of various regular depth intervals below ground surface; vertical conductivity-depth sections along each flight line; horizontal conductance distribution grids; interpreted grids of the depth and elevation of the base of the conductive unit; and images of the above datasets produced using standard image enhancement techniques. The GA-LEI AEM data are derived from the 'Billabong Creek TEMPEST AEM Survey, NSW, 2001 Final Located Data (P904)', available as Geoscience Australia product number 65385 (GeoCat #65385). The GA-LEI has been demonstrated to generate more accurate conductivity predictions than other algorithms for similar TEMPEST surveys. The MAGSPEC datasets are: airborne magnetic data comprising grids of total magnetic intensity (TMI), TMI reduced to pole (TMI-RTP), TMI-RTP first vertical derivative data and a range of enhanced magnetic images derived from the data; airborne gamma-ray data comprising grids of dose rate, concentration of potassium (K), thorium (Th) and uranium (U) and a range of enhanced gamma-ray images derived from the data; and elevation data comprising grids and images of the digital elevation model (DEM) derived from the MAGSPEC survey. The GRAVITY dataset includes point located data, grids and enhanced images of data extracted from the Australian National Gravity Database. The point located data are stored in ASCII files (.asc) formatted with space-delimited columns with an associated comprehensive header (.hdr) file. The gridded data are stored in ER Mapper and ESRI grid formats as binary raster grid files. The image data are stored in JPG format with associated world (.jgw) files. Technical reports describing the data processing techniques are stored in Portable Document Format (.pdf). The datasets are compressed in ZIP files. The Billabong Creek airborne geophysics survey was commissioned by the Murray-Darling Basin Commission in 2001. Fugro Airborne Surveys Pty Ltd (Fugro) was contracted to acquire and process the AEM survey utilising the TEMPEST time domain airborne electromagnetic system. Kevron Geophysics Pty Ltd (Kevron) was contracted to acquire and process the MAGSPEC survey utilising an industry standard system. The project was administered by the Australian Government Department of Agriculture, Fisheries and Forestry through the Bureau of Rural Sciences (BRS), now known as the Australian Bureau of Agricultural and Resource Economics and Sciences (ABARES). Geoscience Australia (GA) managed and quality controlled the work of Kevron and Fugro. Additional processing and enhancements of the 2001 airborne geophysics data was undertaken by GA in 2007-08, with funding from the National Action Plan for Salinity and Water Quality.
Google map showing geographic bounding box with values North bound -35.52 East bound 147.08 West bound 146.61 South bound -35.8
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays

Product Type/Sub Type

dataset - Airborne Digital Data - Point Located

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2012

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

Airborne Digital Data
Point Located
geophysics
Airborne Electromagnetics
AEM
Geophysics

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-35.52
East bound
147.08
West bound
146.61
South bound
-35.8

Lineage

The processing of the TEMPEST AEM data GA-LEI inversion, MAGSPEC, elevation and gravity data including point located data, grids and enhanced images was undertaken by Geoscience Australia. Details of the processing are available in Fisher and Brodie (2008), which is included in the dataset (Filename: BBC_survey_and_metadata_final.pdf). The processing of the TEMPEST AEM conductivity predictions using the GA-LEI algorithm was undertaken by Geoscience Australia. Details of the processing are available in Brodie and Fisher (2008), which is included in the dataset (Filename: BBC_Inversion_Report_final.pdf). The AEM survey data were acquired and processed by the airborne geophysical survey contractors Fugro Airborne Surveys. Details of the acquisition and processing are available in Owers, Sattel and Stenning (2001), which is included in the data package (Filename: BBC_Fugro_AEM_jobreport.pdf). The Honeysuckle Creek and Billabong Creek Operations and Processing report was compiled by Kevron Geophysics and is included in the data package (Filename: HSK_KEVRON_Operations_Processing_Report.pdf)

Digital Transfer Options

onLine

DISTRIBUTION Format

pdf
ers
misc
ascii
jpg

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

c0ae0612-c0ed-0e55-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2012-05-23

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays