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Developments in airborne geophysics and geomatics to map variability of soil
properties
Event Details:
Date: Tuesday, 10 December 2019Time: 10.00am - 11.00amVenue: Agriculture Lecture Theatre G013 Followed by morning tea, in the Science Faculty Common Room G134, The University of WAContact: 6488 4717 | [email protected]
Over the past 40 years, airborne geophysics and geomatics has become an effective and accepted technology for mapping various signatures on the Earth’s surface and sub-surface. But so far, its airborne application in agriculture is perceived as sub-practical and/or its real value unknown to most stakeholders. In this paper, we are reviewing major technical and commercial achievements and latest developments to date, but also potentials for new developments and applications, of airborne geophysics (and geomatics) for soil variability mapping. The contribution of airborne agri-geophysics/geomatics is based on the efficient and versatile integration of four main components: carriers; sensors; data/information; and knowledge. The use of a small and stable airborne multi-sensor data measurement platform, resulting in versatile and highly flexible surveys flown at low/reasonable cost of operation, is the recurring wish of many stakeholders in the agriculture industry. The past years GyroLAG brought to reality the next generation of advanced and innovative light airborne remote sensing platforms with specially designed gyrocopters and also light fixed-wing aircraft. Sensors allow the recording of meaningful information for the critical end product (i.e. knowledge). New technologies and combinations of those technologies must be
enhanced from the traditional off-the-shelves offers by manufacturers or traditional airborne geophysics service providers which are expensive, heavy, not necessarily fit for purpose and definitely not integrated, or capable of being so, for multi-sensor application to agricultural problems. Those sensors include notably: (a) fluxgate magnetic; (b) CsI gamma spectrometer; (c) thermal cameras; (d) NIR hyper-spectral camera; (e) portable SWIR camera; (f) use of reflected GNSS data; and (g) electromagnetic. The above airborne geophysics/geomatics tool box allows collection of soil data such as: potassium, thorium and uranium concentrations; conductivity and/or resistivity values; total magnetic intensity; temperature; and moisture. Through further value-adding on their own or in combination with other data, that information can then be converted into knowledge such as: soil types; soil zoning; soil variability; soil physical parameters (porosity, density, magnetic susceptibility, etc); soil depth; soils clay content; ground faults location; soil moisture; soil erosion risks; nematodes preferential habitat imaging; and soil chemistry.
About Dr Laurent AmeglioLaurent holds a PhD in geophysics and geology (Universities of Toulouse and Nancy, France, 1997). After a brief academic career
at Rhodes University (post-doc researcher, 1998-2000) then University of Pretoria (lecturer) (South Africa, 2001-2002), Laurent joined Fugro Airborne Surveys in Johannesburg as senior geophysicist and until 2007 successively occupied the positions of Chief Geophysicist, Manager Airborne Projects and Operations Manager (in charge of Africa, Middle East and Europe). He was Vice-President of Canada based Terraquest Airborne Geophysics Ltd. in 2011. Laurent is presently the Managing Director of EXIGE (a geophysics consulting firm and technologies incubator), Managing Partner of SkyBorg (UAVs for Africa) and CEO of GyroLAG (gyrocopter airborne geophysics) all registered in South Africa with a base in Australia.
The UWA Institute of Agriculture
IOA morning tea & seminar
with Dr Laurent AmeglioTuesday, 10 December 2019 @ 10.00am Agriculture Lecture Theatre G013, followed by Morning tea, Science Faculty Common Room G134
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