The effect of flight line spacing on radioactivity inventory and spatial feature characteristics of airborne gamma‐ray spectrometry data

Sanderson, David; Cresswell, A.J.; White, Daniel

doi:10.1080/01431160701268970

Cited by 12 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, multi-rotor UASs represent the high-resolution end-member of the airborne radiation mapping spectrum, often achieving sub-10 m pixel sizes (Martin et al, 2015 , 2016 ; Burtniak et al, 2018 ; Connor et al, 2018a , b ). Manned aircraft systems (MASs) represent the opposite end of the scale, operating at between 90 and 200 m agl and achieving spatial resolutions of 200–500 m (Pitkin and Duval, 1980 ; Sanderson and Cresswell, 2008 ). Within this survey, operating altitudes were maintained at 40–60 m agl, with a spatial resolution of 20 m after the post-processing procedure.…”

Section: Discussionmentioning

confidence: 99%

Radiological Mapping of Post-Disaster Nuclear Environments Using Fixed-Wing Unmanned Aerial Systems: A Study From Chornobyl

et al. 2020

View full text Add to dashboard Cite

In the immediate aftermath following a large-scale release of radioactive material into the environment, it is necessary to determine the spatial distribution of radioactivity quickly. At present, this is conducted by utilizing manned aircraft equipped with large-volume radiation detection systems. Whilst these are capable of mapping large areas quickly, they suffer from a low spatial resolution due to the operating altitude of the aircraft. They are also expensive to deploy and their manned nature means that the operators are still at risk of exposure to potentially harmful ionizing radiation. Previous studies have identified the feasibility of utilizing unmanned aerial systems (UASs) in monitoring radiation in post-disaster environments. However, the majority of these systems suffer from a limited range or are too heavy to be easily integrated into regulatory restrictions that exist on the deployment of UASs worldwide. This study presents a new radiation mapping UAS based on a lightweight (8 kg) fixed-wing unmanned aircraft and tests its suitability to mapping post-disaster radiation in the Chornobyl Exclusion Zone (CEZ). The system is capable of continuous flight for more than 1 h and can resolve small scale changes in dose-rate in high resolution (sub-20 m). It is envisaged that with some minor development, these systems could be utilized to map large areas of hazardous land without exposing a single operator to a harmful dose of ionizing radiation.

show abstract

Section: Discussionmentioning

confidence: 99%

Radiological Mapping of Post-Disaster Nuclear Environments Using Fixed-Wing Unmanned Aerial Systems: A Study From Chornobyl

et al. 2020

View full text Add to dashboard Cite

show abstract

“…In airborne gamma-ray scanning, the varying ground conditions in combination with the somewhat diffuse and large footprint (IAEA 2003) make single recordings somewhat fuzzy. However, by taking advantage of the large overlap between recordings, it may be possible to increase local precision in isotope estimates through various un-mixing or filtering procedures (Craig et al 1999;Billings et al 2003;Sanderson et al 2008), leading to better possibilities to interpret the conditions on the ground. This is being investigated in an on-going project being conducted by SGU and SLU that aims at improving the quality and detail in the gamma-ray data available for digital soil mapping.…”

Section: Discussionmentioning

confidence: 99%

Adaptation of regional digital soil mapping for precision agriculture

2016

View full text Add to dashboard Cite

In the initial phase of a national project to map clay, sand and soil organic matter (SOM) content in arable topsoil in Sweden, a study area in south-west Sweden comprising about 100 000 ha of arable land was assessed. Models were created for texture, SOM and two estimated variables for lime requirement determination (target pH and buffering capacity), using a data mining method (multivariate adaptive regression splines). Two existing reference soil datasets were used: a grid dataset and a dataset created for individual farms. The predictor data were of three types: airborne gamma-ray spectrometry data, digital elevation from airborne laser scanning, and legacy data on Quaternary geology. Validations were designed to suit applicability assessments of prediction maps for precision agriculture. The predictor data proved applicable for regional mapping of topsoil texture at 50 9 50 m 2 spatial resolution (root mean square error: clay = 6.5 %; sand = 13.2 %). A novel modelling strategy, 'Farm Interactive', in which soil analysis data for individual farms were added to the regional data, and given extra weight, improved the map locally. SOM models were less satisfactory. Variable-rate application files for liming created from derived digital soil maps and locally interpolated soil data were compared with 'ground truth' maps created by proximal sensors on one test farm. The Farm Interactive methodology generated the best predictions and was deemed suitable for adaptation of regional digital soil maps for precision agricultural purposes.

show abstract

“…AGR FOVs are primarily a function of survey altitude, although the movement of the aircraft can play a part as well (Simon and Graham, 1998;Martin et al, 2006). The extent of smoothing from AGR FOVs will depend on both the spatial dimensions and degree of heterogeneity associated with the ground source (Sanderson et al, 2008;Environmental Protection Agency, 2011). The one exception to this trend, however, was observed within Site A, where AGR measurements were greater than PGR at the west end of the survey (Fig.…”

Section: Sources Of Error In Aerial Gamma Radiometrics and Need For Smentioning

confidence: 99%

“…These measurements can occur across the entire spectrum (0.4-3.0 MeV), in regions of interest (ROIs) such as potassium ( 40 K), uranium ( 238 eU), thorium ( 232 eTh) or can be combined to create dose rate (International Atomic Energy Agency, 2003). AGR have been applied toward geomorphology (Pickup and Marks 2000), ecosystem (Verboom and Pate, 2015), environmental contamination studies (Sanderson et al, 2008) and soil mapping studies (Rawlins et al, 2009;Odgers et al, 2014;Kidd et al, 2015), mainly within Europe and Australia.…”

Section: Introductionmentioning

confidence: 99%

Understanding the utility of aerial gamma radiometrics for mapping soil properties through proximal gamma surveys

2017

View full text Add to dashboard Cite

The effect of flight line spacing on radioactivity inventory and spatial feature characteristics of airborne gamma‐ray spectrometry data

Cited by 12 publications

References 9 publications

Radiological Mapping of Post-Disaster Nuclear Environments Using Fixed-Wing Unmanned Aerial Systems: A Study From Chornobyl

Radiological Mapping of Post-Disaster Nuclear Environments Using Fixed-Wing Unmanned Aerial Systems: A Study From Chornobyl

Adaptation of regional digital soil mapping for precision agriculture

Understanding the utility of aerial gamma radiometrics for mapping soil properties through proximal gamma surveys

Contact Info

Product

Resources

About