The New South Wales Government’S Discovery 2000 – Geophysical Surveys and Their Effect on Exploration

Robson, David; Spencer, Ross

doi:10.1071/eg997296

Cited by 4 publications

(2 citation statements)

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“…There is an important gap in spatial resolution between aerial and on ground magnetic surveys. Low-budget Remotely Piloted Aircrafts (RPAs) with automated track and altitude control can cover this gap and increase the spatial resolution by an order of magnitude compared to traditional aerial surveys [4]. Furthermore, it has been reported [5] that the magnetic signature of the drones produces less magnetic contamination than the aircrafts.…”

Section: Introductionmentioning

confidence: 99%

Vector Magnetometry Using Remotely Piloted Aircraft Systems: An Example of Application for Planetary Exploration

et al. 2021

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Geomagnetic prospection is an efficient and environmentally friendly geophysical method for the analysis of the magnetic minerals’ distribution in the subsurface. High-resolution measurements require on-ground campaigns. However, these activities might imply high costs, risk and time consumption. Some more recent works have started to use magnetometers on-board remote piloted aircrafts. Normally, they fly at a constant altitude and use scalar probes. This configuration permits the determination of the magnitude of the magnetic field but not the direction, and requires advanced techniques for in-depth interpretation of the sources. In this manuscript, we describe the accommodation of a system for vector magnetometry in a drone whose flight altitude follows the elevation of the terrain. This singularity improves the capability of interpretation, including constraints in dating due to the record of the geomagnetic field. The work consists of the design, development and implementation of a solidary payload system anchored to the body of the platform in order to determine the vector magnetic field. It describes the details of the system and the performance characteristics obtained after the calibration, as well as its demonstration via a field campaign in the spatter deposits of Cerro Gordo volcano in Campos de Calatrava volcanic province in Spain.

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Section: Introductionmentioning

confidence: 99%

Vector Magnetometry Using Remotely Piloted Aircraft Systems: An Example of Application for Planetary Exploration

et al. 2021

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“…At the same time, explorationists began to design airborne surveys so they could resolve subtle magnetic-field variations such as those caused by intrasedimentary sources (see papers in Peirce et al, 1998). Exploration surveys are generally flown lower in Australia, at 60-80 m above ground (e.g., Robson and Spencer, 1997), and even lower if acquired by the Geological Survey of Finland (30-40 m flight height with 200-m line spacing; http://www.gsf.fi/aerogeo/eng0.htm). Today, high-resolution aeromagnetic (HRAM) surveys are considered industry standard, although exactly what flight specifications constitute a high-resolution survey is ill defined.…”

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confidence: 99%

9. Magnetic Exploration Methods

Nabighian¹,

Grauch²,

Hansen³

et al. 2010

Geophysics Today

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The magnetic method, perhaps the oldest of geophysical exploration techniques, blossomed after the advent of airborne surveys in World War II. With improvements in instrumentation, navigation, and platform compensation, it is now possible to map the entire crustal section at a variety of scales, from strongly magnetic basement at regional scale to weakly magnetic sedimentary contacts at local scale. Methods of data filtering, display, and interpretation have also advanced, especially with the availability of low-cost, high-performance personal computers and color raster graphics. The magnetic method is the primary explo-ration tool in the search for minerals. In other arenas, the magnetic method has evolved from its sole use for mapping basement structure to include a wide range of new applications, such as locating intrasedimentary faults, defining subtle lithologic contacts, mapping salt domes in weakly magnetic sediments, and better defining targets through 3D inversion. These new applications have increased the method's utility in all realms of exploration -in the search for minerals, oil and gas, geothermal resources, and groundwater, and for a variety of other purposes such as natural hazards assessment, mapping impact structures, and engineering and environmental studies.

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Seamless geological map generation using ASTER in the Broken Hill-Curnamona province of Australia

Hewson

Cudahy

Mizuhiko³

et al. 2005

Remote Sensing of Environment

180

101

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The New South Wales Government’S Discovery 2000 – Geophysical Surveys and Their Effect on Exploration

Cited by 4 publications

References 0 publications

Vector Magnetometry Using Remotely Piloted Aircraft Systems: An Example of Application for Planetary Exploration

Vector Magnetometry Using Remotely Piloted Aircraft Systems: An Example of Application for Planetary Exploration

9. Magnetic Exploration Methods

Seamless geological map generation using ASTER in the Broken Hill-Curnamona province of Australia

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