Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid  


Authors / CoAuthors

Geophysical Acquisition & Processing Section

Abstract

Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid is a first vertical derivative of the Bouguer anomaly grid for the Cape York Gravity Survey, Qld, 2009 (P200940) survey. This gravity survey was acquired under the project No. 200940 for the geological survey of QLD. The grid has a cell size of 0.0075 degrees (approximately 820m). A total of 9244 gravity stations were acquired to produce the original grid. A Fast Fourier Transform (FFT) process was applied to the original grid to calculate the first vertical derivative grid.

Product Type

dataset

eCat Id

113268

Contact for the resource

  Point of contact

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

Keywords

theme.ANZRC Fields of Research.rdf
  • EARTH SCIENCES
( Data centre )
  • NCI
( Discipline )
  • Earth sciences
( Discipline )
  • geophysics
( Feature type )
  • grid
( Place )
  • Australia
( Place )
  • QLD
( Project )
  • survey 200940
( Theme )
  • GADDS2.0
( Theme )
  • gravity
( Theme )
  • Bouguer
( Theme )
  • infinite slab
( Theme )
  • 1VD
( Theme )
  • first vertical derivative
( Theme )
  • ground digital data
( Theme )
  • geophysical survey
( Theme )
  • grav
( Theme )
  • grid
( Theme )
  • raster
  • Published_External

Publication Date

2017-10-19T00:00:00

Creation Date

2017-10-19T00:00:00

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Access - license

Use - license

Status

completed

Purpose

Maintenance Information

notPlanned

Topic Category

geoscientificInformation

Series Information

Lineage

This Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid is a first vertical derivative grid of the Bouguer anomaly for the Cape York Gravity Survey, Qld, 2009 (P200940) survey. This gravity survey was acquired under the project No. 200940 for the geological survey of QLD. The grid has a cell size of 0.0075 degrees (approximately 820m). A first vertical derivative was calculated by applying a fast Fourier transform (FFT) process to the Bouguer gravity grid of the Cape York Gravity Survey, Qld, 2009 (P200940) survey to produce this grid. This grid was calculated using an algorithm from the INTREPID Geophysics software package. The processed data are checked by GA geophysicists using standard methods for assessing quality to ensure that the final data are fit-for-purpose. The first vertical derivative grid is very helpful for the enhancement of near surface features and structural features such as faults and dykes. Details of the specifications of individual surveys held in the Australian National Gravity Database (ANGD) can be found in the Second Edition of the Index of Gravity Surveys (Wynne and Bacchin, 2009). References: Intrepid Geophysics, http://www.intrepid-geophysics.com; Wynne, P., and Bacchin, M., 2009. Index of Gravity Surveys (Second Edition). Geoscience Australia, Record 2009/07.

Parent Information

Geophysical Data Collection - gravity

UUID - c6b58f54-102c-19e9-e044-00144fdd4fa6,

eCat ID - 74512

Extents

[-18.0839, -10.6289, 141.3583, 145.5583]

Reference System

GDA94 (EPSG:4283)

Spatial Resolution

Service Information

Associations

Association Type - operatedOnBy

Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid NCSS    

Association Type - operatedOnBy

Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid OPeNDAP    

Association Type - operatedOnBy

Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid WMS    

Association Type - operatedOnBy

Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid WCS    

Downloads and Links

File available for download in various formats from the GADDS2 portal  

Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid file download  

Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid NCSS  

Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid OPeNDAP  

Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid WMS  

Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid WCS  

Source Information

This Cape York Gravity Survey, Qld, 2009 (P200940), Bouguer 1VD grid includes ground gravity point data for the Cape York Gravity Survey, Qld, 2009 (P200940) survey acquired for the geological survey of QLD