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Regional Geophysical Surveys

On this page, the Geological Survey of Western Australia provides georeferenced images of regional datasets (often merged with previously flown data from government and non-confidential company surveys), and preliminary grids and images from surveys in progress.

GSWA has an arrangement with Geoscience Australia (GA) whereby final point-located (‘vector’) data and grids from regional surveys can be downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS). The data on physical media can be purchased from GA's Sales Centre.

ECW files can be viewed using ER Viewer or various GIS applications. Download ER Viewer free of charge from ER Mapper.

Current Survey Program Schedule (PDF)

Survey Outlines (ESRI shapefile)

Page Index

Grids and Images

Grids and Images

Yampi–Derby 2009 airborne magnetic and radiometric survey — final data

Date released: 5 November 2009

Grids and images of data from the Yampi–Derby 2009 survey (line spacing: 400 m; height: 60 m; direction: E-W).

Point-located (‘vector’) data and grids from this survey (unmerged) can be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS).
Yampi-Derby Thumb
  • Images in ECW format: TMI, DEM, Ternary Radiometric
  • Data Grids in ER Mapper format: TMI, DEM, Total Count, Potassium, Uranium, Thorium
  • Operations Report in PDF format

Seemore 2009 airborne magnetic and radiometric survey — final data

Date released: 22 October 2009

Grids and images of data from the Seemore 2009 survey (line spacing: 200 m; height: 50 m; direction: E-W).

Point-located (‘vector’) data and grids from this survey (unmerged) can be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS).
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  • Download Images in ECW format: TMI, DEM, Ternary Radiometric.
  • Download Data Grids in ER Mapper format: TMI, DEM, Total Count, Potassium, Uranium, Thorium
  • Download Operations Reports

Cunderdin 2009 regional gravity survey

Date released: 3 September 2009

Final data from the regional ground gravity survey (nominal 2 km regular grid of stations) completed in April 2009.

Point-located (‘vector’) data and grids can also be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS). 

·         Data package consisting of the survey operations report, located data, grids and ecw images of Bouguer Anomaly, First Vertical Derivative and Elevation. The images are illuminated from overhead (azimuth 0 degrees, elevation 90 degrees).

Cunderdin Thumb
  • GSWA Cunderdin Release 3 Sep 2009

OIC Ord Catchment 2007 Airborne EM and LIDAR DEM surveys

Date released: 23 July 2009

AEM data, ortho-imagery and digital elevation grids from an airborne EM (SkyTEM) survey and a complementary LIDAR survey covering approximately 900 km2 in the Ord Catchment.

The surveys were commissioned by the Ord Irrigation Cooperative (OIC), in partnership with CSIRO and Geosciences Australia and were funded by the Australian and Western Australian Governments as a project of the National Action Plan for Salinity and Water Quality through the Rangelands Coordinating Group.

The complete data package is available from GSWA on DVD ($99) or 250GB external hard drive ($132; with other publicly available airborne geophysical data) and contains:

·         AEM survey: Located data files (available from mid-August); conductivity grids (ers format); conductivity-depth inversions (pdf)

·         LIDAR survey: Digital elevation grids (5m) (ers format); ortho-imagery — as geo-referenced ecw and tab files (5:1 compression) in individual tiles and mosaics for the eastern and western areas; 400 dpi images of the DEM for each area as ecw, jpg and tif files.

Link to order form for data package

The AEM grids and DEM ecw files may be downloaded free of charge.

 

 

Download AEM grids and inversions:
  • Western Area conductivity grids
  • Eastern Area conductivity grids 1
  • Eastern Area conductivity grids 2
  • Conductivity-Depth Inversions
  • Download 5m DEM ECW images

Radiometric anomaly grids (100m) of Western Australia, Version 1 — 2009

The Western Australia portion of the grids from Geoscience Australia's Radiometric Map of Australia (2009) has been updated with data from 23 more recently available government and open file surveys. The complete dataset is approximately 4 Gb in size (1.4 Gb for each of the three grids for potassium, thorium and uranium) and, at present, is only available from GSWA on DVD ($99) or external hard drive ($132); it is not available by download from the Geoscience Australia GADDS facility.  A data request may be submitted via the online request form at http://www.dmp.wa.gov.au/4125.aspx.


A ternary radiometric image in ecw format has been compiled for download at no charge.
  • Download ternary image as ecw (no charge)

Esperance and Balladonia 2008 airborne magnetic and radiometric surveys

Date released: 26 March 2009

Final images and grids of data acquired between January and October 2008 (400 m line spacing) merged with previously flown company data.

Final point-located (‘vector’) data and grids from the separate surveys (unmerged) can be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS). 

Esperance and Balladonia
  • Data Grid in ER Mapper format: Elevation
  • Data Grid in ER Mapper format: Thorium
  • Data Grid in ER Mapper format: Uranium.
  • Data Grid in ER Mapper format: Potassium
  • Data Grid in ER Mapper format:
  • Data Grid in ER Mapper format: TMI
  • Images in ECW format: TMI, DEM, Ternary Radiometric
  • Survey Operations Reports and Metadata

Windimurra 2008 regional gravity survey

Date released: 20 November 2008

Final images and grids of data from regional ground gravity survey (2.5 km regular grid of stations) completed in September 2008 merged with data from the Murchison 2006 regional survey.

Point-located (‘vector’) data and grids from this survey (unmerged) can be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS).

Grids and images of merged Bouguer Anomaly, First Vertical Derivative and Height (DEM). Grids are in ER Mapper format with a cell size of 500m. Images are in ecw format. The gravity images are illuminated from overhead (azimuth 0°, elevation 90°) and the DEM image is illuminated from north east (azimuth 45°, elevation 45°).
WindimurraThumb
  • Merged grids and images and point-located (‘vector’) data for Windimurra 2008 survey only.
  • Survey Operations Report

Dumbleyung 2008 airborne magnetic and radiometric surveys

Release dates:

  • 27 November 2008: Detailed survey funded by the Southwest Catchments Council (SWCC) — supported by the Australian Government and the Government of Western Australia. Survey line spacing: 100 m; height: 40 m; direction: N - S.
  • 19 February 2009: Regional surveys to complete coverage of the Dumbleyung 1:250 000 map sheet area. Survey line spacing: 400 m; height: 40 m; direction: N - S.

The regional surveys (shown red in the figure) were flown in four blocks: 1 — Kukerin; 2 — Katanning; 3 — Kojunup; and 4 — Wagin. They were flown around the SWCC 2008 survey (blue) and between existing government and company data (gray).

Point-located (‘vector’) data and grids for the detailed and regional surveys (unmerged) can be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS).

The regional data have been merged with data from the detailed SWCC and company data (flown at 100 m and 200 m line spacing) to produce compilation grids and images at 25 m line spacing to retain the resolution of the detailed surveys. A set of images and the individual grids can be downloaded from the links below or requested as a package on DVD from GSWA (charges apply).
  • Survey Operations Report and Metadata
  • Images in ECW format: TMI, DEM, Ternary Radiometric
  • Data Grid in ER Mapper format: TMI
  • Data Grid in ER Mapper format: Total Count
  • Data Grid in ER Mapper format: Potassium
  • Data Grid in ER Mapper format: Uranium
  • Data Grid in ER Mapper format: Thorium
  • Data Grid in ER Mapper format: Elevation

Byro 2008 airborne magnetic and radiometric survey — final data

Date released: 25 September 2008

Grids and images of data from the Byro 2008 survey (line spacing: 400 m; height: 60 m; direction: E-W) merged with previously flown data from government and non-confidential company surveys. The total magnetic intensity (TMI) and digital elevation model (DEM) images are illuminated from the northeast (azimuth 90 degrees, elevation 45 degrees). Ternary radiometric image is potassium, thorium, and uranium displayed as red, green, and blue. The data have been compressed 10:1 using enhanced compressed wavelet technology.

Point-located (‘vector’) data and grids from this survey (unmerged) can be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS).
  • Images in ECW format: TMI, DEM, Ternary Radiometric
  • Data Grids in ER Mapper format: TMI, DEM, Total Count, Potassium, Uranium, Thorium.

Musgrave 2008 gravity survey

Date released: 7 August 2008

The data were acquired in May and June 2008 (at a 2.5 km regular grid of stations) and are available for download from the Geoscience Australia Geophysical Archive Data Delivery System (GADDS). GSWA provides a data package consisting of the survey operations report and located dataset, and a compilation of the new data merged with pre-existing data at approximately the same level detail in the form of grids and ecw images of Bouguer Anomaly and First Vertical Derivative. The images are illuminated from overhead (azimuth 0 degrees, elevation 90 degrees).

Musgrave 2008 gravity survey
  • Musgrave 2008 gravity survey

South Kimberley 2007 airborne magnetic and radiometric survey

Date released: 20 November 2008     Final images and grids of data acquired between January and October 2008 (400 m line spacing) merged with previously flown company data.     Final point-located (‘vector’) data and grids from this survey (unmerged) can be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS). 


 
  • Survey Operations Report
  • Images in ECW format: MAG, DEM, Ternary Radiometric
  • Data Grid in ERS format: MAG
  • Data Grid in ERS format: MAG RTP
  • Data Grid in ERS format: MAG RTP 1VD
  • Data Grid in ERS format: DEM
  • Data Grid in ERS format: Total Count
  • Data Grid in ERS format: Potassium
  • Data Grid in ERS format: Uranium
  • Data Grid in ERS format: Thorium

Ashburton Basin 2006 airborne magnetic and radiometric survey

Final data grids and images (ER Mapper and ECW format) - Data released: 4 April 2007

This release combines grids and images of the new data merged with previously flown data from government and non-confidential company surveys. The DEM image is from new data merged with SRTM data. The total magnetic intensity (TMI) and digital elevation model (DEM) images are illuminated from the northeast (azimuth 90 degrees, elevation 45 degrees). Ternary radiometric image is potassium, thorium, and uranium displayed as red, green, and blue. The data have been compressed 10:1 using enhanced compressed wavelet technology. Note: Final point-located (‘vector’) data and grids from this survey (unmerged) can be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS).

  • MAG image in ECW format
  • DEM image in ECW format
  • KTU image in ECW format
  • Total Count image in ECW format
  • Potassium image in ECW format
  • Thorium grid in ERS format
  • Uranium grid in ERS format
  • All images
  • MAG grid in ERS format
  • DEM grid in ERS format
  • Total Count grid in ERS format
  • Potassium grid in ERS format
  • Thorium image in ECW format
  • Uranium image in ECW format

Bouguer gravity anomaly image of Western Australia Image as .ecw file

The image was generated from a colour palette (white high, blue low) using a linear histogram. To emphasize the expression of high-frequency anomalies, an artificial illumination was applied from overhead (70° azimuth, 80° elevation). Grid cell size is approximately 850 m. The data have been compressed 10:1 using enhanced compressed wavelet technology.

Bouguer gravity anomaly image of Western Australia Image
  • Metadata for the image is available as a Word document.
  • Download image

East Yilgarn final airborne magnetic, radiometric, and elevation images

Images as .ecw files — free on web Total magnetic intensity (TMI) and digital terrain model (DTM) images are illuminated from the northeast (azimuth 90 degrees, elevation 45 degrees). Ternary radiometric image is potassium, thorium, and uranium displayed as red, green, and blue. The data have been compressed 10:1 using enhanced compressed wavelet technology.

East Yilgarn final airborne magnetic, radiometric, and elevation images
  • TMI image as ECW file
  • DTM image as ECW file
  • Ternary radiometric image as ECW file

Gascoyne 2005 final airborne magnetic, radiometric, and elevation images

Images as .ecw files — free on web Total magnetic intensity (TMI) and digital terrain model (DTM) images are illuminated from the northeast (azimuth 90 degrees, elevation 45 degrees). Ternary radiometric image is potassium, thorium, and uranium displayed as red, green, and blue. The data have been compressed 10:1 using enhanced compressed wavelet technology.

Gascoyne 2005 final airborne magnetic, radiometric, and elevation images
  • TMI image as ECW file
  • DTM image as ECW file
  • Ternary radiometric image as ECW file

Murchison 2007 gravity survey — Final data

Data released: 15  May 2007 Digital data can be purchased from Geoscience Australia or downloaded from GA's Geophysical Archive Data Delivery System (GADDS). GSWA provides two ZIP files for download, containing Survey Operations Report, data and images of Bouguer Anomaly and First Vertical Derivative. The images are illuminated from overhead (azimuth 0 degrees, elevation 90 degrees ).

Publication Thumbnail
  • Data package
  • Report package

Musgrave extensions airborne magnetic and radiometric survey data — final data

Digital data are available from Geoscience Australia, or download free of charge through Geoscience Australia's  Geophysical Archive Data Delivery System (GADDS). The images listed below are made from the latest data release merged with previously acquired regional government data and Open File company surveys. All images are in ECW format, compressed 10:1 using enhanced compressed wavelet technology. Total magnetic intensity (TMI) is illuminated from the northeast (azimuth 90 degrees, elevation 45 degrees). Ternary radiometric image is potassium, thorium, and uranium displayed as red, green, and blue.
Musgrave extensions airborne magnetic and radiometric survey data — final data
  • Musgrave Region — TMI image in ECW format
  • Musgrave Region — Ternary radiometric image in ECW format
  • Musgrave Region — Total count image in ECW format
  • Musgrave Region - Uranium image in ECW format
  • Musgrave Region — Thorium image in ECW format
  • Musgrave Region — Potassium image in ECW format

North Paterson digital elevation model image

Digital data available from Geoscience Australia, or download free of charge through Geoscience Australia’s Geophysical Archive Data Delivery System.

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  • Image as .ecw file - free on web

North Paterson ternary radiometric image

Digital data available from Geoscience Australia, or download free of charge through Geoscience Australia’s Geophysical Archive Data Delivery System

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  • Image as .ecw file - free on web

North Paterson total magnetic intensity image

Digital data available from Geoscience Australia, or download free of charge through Geoscience Australia’s Geophysical Archive Data Delivery System.

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  • Image as .ecw file — free on web

Officer Basin airborne magnetic and radiometric survey

Final data grids and images in ER Mapper and ECW format
Data released: 28 March 2007 These grids and images contain the new data merged with previously flown data from government and non-confidential company surveys. The DEM image is from new data merged with SRTM data. The total magnetic intensity (TMI) and digital elevation model (DEM) images are illuminated from the northeast (azimuth 90 degrees, elevation 45 degrees). Ternary radiometric image is potassium, thorium, and uranium displayed as red, green, and blue. The data have been compressed 10:1 using enhanced compressed wavelet technology. Note: Final point-located (‘vector’) data and grids from this survey (unmerged) can be purchased from Geoscience Australia or downloaded free of charge from GA's Geophysical Archive Data Delivery System (GADDS).

Publication Thumbnail
  • MAG image in ECW format
  • DEM image in ECW format
  • KTU image in ECW format
  • Total Count image in ECW format
  • Potassium image in ECW format
  • Thorium image in ECW format
  • Uranium image in ECW format
  • MAG grid in ERS format
  • DEM grid in ERS format
  • Total Count grid in ERS format
  • Potassium grid in ERS format
  • Thorium grid in ERS format
  • Uranium grid in ERS format

Paterson Bouguer image

ERMapper grid of final data from the Paterson Gravity Survey 2005 (GA4025). Bouguer gravity (Illumination: Azimuth 48, Elevation 75).

The data have been compressed 20:1 using enhanced compressed wavelet technology.

Digital data available from Geoscience Australia, or download free of charge through Geoscience Australia’s Geophysical Archive Data Delivery System.

Paterson Bouguer image
  • Image as .ecw file - free on web

Paterson Bouguer first vertical derivative image

ERMapper grid of final data from the Paterson Gravity Survey 2005 (GA4025). First vertical derivative of Bouguer gravity (Illumination: Azimuth 48, Elevation 75).

The data have been compressed 20:1 using enhanced compressed wavelet technology.

Digital data available from Geoscience Australia , or download free of charge through Geoscience Australia’s Geophysical Archive Data Delivery System.

Paterson Bouguer first vertical derivative image
  • Image as .ecw file — free on web

Paterson Bouguer gravity and elevation image

ERMapper grid of final data from the Paterson Gravity Survey 2005 (GA4025). Bouguer gravity (colour) draped over elevation from station heights (shaded) (Illumination: Azimuth 45, Elevation 45).

The data have been compressed 20:1 using enhanced compressed wavelet technology.

Digital data available from Geoscience Australia, or download free of charge through Geoscience Australia’s Geophysical Archive Data Delivery System.

Paterson Bouguer gravity and elevation image
  • Image as .ecw file — free on web

Paterson Bouguer gravity first vertical derivative and elevation image

ERMapper grid of final data from the Paterson Gravity Survey 2005 (GA4025). First vertical derivative of Bouguer gravity (colour) draped over elevation from station heights (shaded) (Illumination: Azimuth 45, Elevation 45).

The data have been compressed 20:1 using enhanced compressed wavelet technology.

Digital data available from Geoscience Australia, or download free of charge through Geoscience Australia’s Geophysical Archive Data Delivery System.

Paterson Bouguer gravity first vertical derivative and elevation image
  • Image as .ecw file — free on web

Paterson elevation image

ERMapper grid of final data from the Paterson Gravity Survey 2005 (GA4025). Elevation from station heights (Illumination: Azimuth 45, Elevation 45).

The data have been compressed 20:1 using enhanced compressed wavelet technology.

Digital data available from Geoscience Australia, or download free of charge through Geoscience Australia’s Geophysical Archive Data Delivery System.

Paterson elevation image
  • Image as .ecw file — free on web

South Paterson airborne magnetic, radiometric, and elevation images

Images from the levelled data.
Images as .ecw files — free on web. Total magnetic intensity (TMI) and digital terrain model (DTM) images are illuminated from the east (azimuth 90 degrees, elevation 45 degrees). Ternary radiometric image is potassium, thorium, and uranium displayed as red, green, and blue. The data have been compressed 10:1 using enhanced compressed wavelet technology.

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  • MAG image as ECW file
  • KTU image as ECW file
  • DEM image as ECW file

Webb Regional Gravity Survey — final gravity data

Final point-located data, grids and images from the recently completed Webb regional gravity survey are now available. Images as ECW files are provided below. Digital data can be purchased from Geoscience Australia or downloaded from GA's Geophysical Archive Data Delivery System (GADDS). The data have been compressed 10:1 using enhanced compressed wavelet technology.
Webb Regional Gravity Survey — final gravity data
Webb Regional Gravity Survey — final gravity data
  • Gravity image in ERS/ECW format — a pseudo-color draped image of Bouguer gravity (density 2.67). The image illustrates the range of values, from low to high as blue through to red. A sun filter has been applied to enhance features, azimuth 65 degrees.
  • Vertical derivative image in ERS/ECW format — a gray scale image of the first vertical derivative of the Bouguer anomalies. The image illustrates the range of values, from low to high as black through to white.
  • Elevation image in ERS/ECW format — a pseudo-color draped image of the elevation recorded. The image illustrates the range of count values, from low to high as blue through to red. A sun filter has been applied, to enhance features.

Western Arunta magnetic, radiometric, and gravity–magnetic drape images

Images as .ecw files - free on web Final point-located data, grids and images from the Webb regional gravity survey, Webb-Wilson regional magnetic and radiometric survey, and McDonald regional magnetic and radiometric survey can be purchased from Geoscience Australia   or downloaded from GA's Geophysical Archive Data Delivery System   (GADDS). Images as ECW files are provided below. The images are a subset of merged grids from the Webb-Wilson and McDonald regional surveys.

Total magnetic intensity (TMI) images are reduced to pole, illuminated from the northeast (azimuth 90 degrees, elevation 45 degrees), and generated from a colour palette (white high, blue low) using a gaussian stretch. The ternary radiometric image is potassium, thorium, and uranium (KTU) displayed as red, green, and blue, respectively. The drape image is of the first vertical derivative of the magnetic merge draped over the Webb bouguer gravity image. The data have been compressed 25:1 using enhanced compressed wavelet technology.

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RTP MAG Image
RTP-1VD MAG-image
Western Arunta - KTU Image
RTP-1VD MAG-GRAVITY drape in ECW format
  • Western Arunta - RTP MAG image in ECW format
  • Western Arunta - RTP-1VD MAG image in ECW format
  • Western Arunta - KTU image in ECW format
  • Western Arunta - RTP-1VD MAG-GRAVITY drape in ECW format

Magnetic anomaly grid (80m) of Western Australia, Version 1 - 2008

This merged magnetic anomaly grid is generated from Federal and State government data sets acquired with a line spacing of 500 metres or less and selected open file data sets. The "Geoscience Australia magnetic grid of Western Australia 2005" (250 m cell size) has been used as a base reference grid and is also used to complete the background areas where closer spaced data are not available.

The final grid has a cell size of approximately 80 metres (0.0008 degrees) and was generated using Intrepid software. The grid file is approxamately 2GB size and, at present, is only available on DVD or external hard drive from GSWA (for $99); it is not available by download from the Geoscience Australia GADDS facility.

Image from the levelled data as ecw file - free on web.

The image was generated from a colour palette (white high. blue low) using histogram equalisation. To emphasize the expression of high-frequency anomalies, an artificial illumination was applied from the northeast. Grid cell size is approximately 80 m. The data have been compressed 10:1 using enhanced compressed wavelet technology.

Magnetic anomaly grid (80m) of Western Australia, Version 1 - 2008
  • Submit online order for grid

Submit Order
($99 inc. GST)

  • Image from the levelled data as ecw file - free on web.
Page last modified: 24-Nov-2009
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