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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.06625">arXiv:2208.06625</a> <span> [<a href="https://arxiv.org/pdf/2208.06625">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Geophysics">physics.geo-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3390/rs14153814">10.3390/rs14153814 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Airborne Radiometric Surveys and Machine Learning Algorithms for Revealing Soil Texture </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Maino%2C+A">Andrea Maino</a>, <a href="/search/physics?searchtype=author&query=Alberi%2C+M">Matteo Alberi</a>, <a href="/search/physics?searchtype=author&query=Anceschi%2C+E">Emiliano Anceschi</a>, <a href="/search/physics?searchtype=author&query=Chiarelli%2C+E">Enrico Chiarelli</a>, <a href="/search/physics?searchtype=author&query=Cicala%2C+L">Luca Cicala</a>, <a href="/search/physics?searchtype=author&query=Colonna%2C+T">Tommaso Colonna</a>, <a href="/search/physics?searchtype=author&query=De+Cesare%2C+M">Mario De Cesare</a>, <a href="/search/physics?searchtype=author&query=Guastaldi%2C+E">Enrico Guastaldi</a>, <a href="/search/physics?searchtype=author&query=Lopane%2C+N">Nicola Lopane</a>, <a href="/search/physics?searchtype=author&query=Mantovani%2C+F">Fabio Mantovani</a>, <a href="/search/physics?searchtype=author&query=Marcialis%2C+M">Maurizio Marcialis</a>, <a href="/search/physics?searchtype=author&query=Martini%2C+N">Nicola Martini</a>, <a href="/search/physics?searchtype=author&query=Montuschi%2C+M">Michele Montuschi</a>, <a href="/search/physics?searchtype=author&query=Piccioli%2C+S">Silvia Piccioli</a>, <a href="/search/physics?searchtype=author&query=Raptis%2C+K+G+C">Kassandra Giulia Cristina Raptis</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">Antonio Russo</a>, <a href="/search/physics?searchtype=author&query=Semenza%2C+F">Filippo Semenza</a>, <a href="/search/physics?searchtype=author&query=Strati%2C+V">Virginia Strati</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2208.06625v1-abstract-short" style="display: inline;"> Soil texture is key information in agriculture for improving soil knowledge and crop performance, so the accurate mapping of this crucial feature is imperative for rationally planning cultivations and for targeting interventions. We studied the relationship between radioelements and soil texture in the Mezzano Lowland (Italy), a 189 $km^2$ agricultural plain investigated through a ded-icated airbo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.06625v1-abstract-full').style.display = 'inline'; document.getElementById('2208.06625v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.06625v1-abstract-full" style="display: none;"> Soil texture is key information in agriculture for improving soil knowledge and crop performance, so the accurate mapping of this crucial feature is imperative for rationally planning cultivations and for targeting interventions. We studied the relationship between radioelements and soil texture in the Mezzano Lowland (Italy), a 189 $km^2$ agricultural plain investigated through a ded-icated airborne gamma-ray spectroscopy survey. The K and Th abundances were used to retrieve the clay and sand content by means of a multi-approach method. Linear (simple and multiple) and non-linear (machine learning algorithms with deep neural networks) predictive models were trained and tested adopting a 1:50,000 scale soil texture map. The comparison of these approaches highlighted that the non-linear model introduces significant improvements in the prediction of soil texture fractions. The predicted maps of the clay and of the sand content were compared with the regional soil maps. Although the macro-structures were equally present, the airborne gam-ma-ray data permits us shedding light on finer features. Map areas with higher clay content were coincident with paleo-channels crossing the Mezzano Lowland in Etruscan and Roman periods, confirmed by the hydrographic setting of historical maps and by the geo-morphological features of the study area. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.06625v1-abstract-full').style.display = 'none'; document.getElementById('2208.06625v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 9 figures, 3 tables, correspondence to Andrea Maino via email at maino@fe.infn.it</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Remote Sens. 2022, 14, 3814 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1901.10796">arXiv:1901.10796</a> <span> [<a href="https://arxiv.org/pdf/1901.10796">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Physics Education">physics.ed-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3390/educsci9010015">10.3390/educsci9010015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Training Future Engineers to Be Ghostbusters: Hunting for the Spectral Environmental Radioactivity </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Alb%C3%A9ri%2C+M">Matteo Alb茅ri</a>, <a href="/search/physics?searchtype=author&query=Baldoncini%2C+M">Marica Baldoncini</a>, <a href="/search/physics?searchtype=author&query=Bottardi%2C+C">Carlo Bottardi</a>, <a href="/search/physics?searchtype=author&query=Chiarelli%2C+E">Enrico Chiarelli</a>, <a href="/search/physics?searchtype=author&query=Landsberger%2C+S">Sheldon Landsberger</a>, <a href="/search/physics?searchtype=author&query=Raptis%2C+K+G+C">Kassandra Giulia Cristina Raptis</a>, <a href="/search/physics?searchtype=author&query=Serafini%2C+A">Andrea Serafini</a>, <a href="/search/physics?searchtype=author&query=Strati%2C+V">Virginia Strati</a>, <a href="/search/physics?searchtype=author&query=Mantovani%2C+F">Fabio Mantovani</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1901.10796v1-abstract-short" style="display: inline;"> Although environmental radioactivity is all around us, the collective public imagination often associates a negative feeling to this natural phenomenon. To increase the familiarity with this phenomenon we have designed, implemented, and tested an interdisciplinary educational activity for pre-collegiate students in which nuclear engineering and computer science are ancillary to the comprehension o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.10796v1-abstract-full').style.display = 'inline'; document.getElementById('1901.10796v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1901.10796v1-abstract-full" style="display: none;"> Although environmental radioactivity is all around us, the collective public imagination often associates a negative feeling to this natural phenomenon. To increase the familiarity with this phenomenon we have designed, implemented, and tested an interdisciplinary educational activity for pre-collegiate students in which nuclear engineering and computer science are ancillary to the comprehension of basic physics concepts. Teaching and training experiences are performed by using a 4" x 4" NaI(Tl) detector for in-situ and laboratory 纬-ray spectroscopy measurements. Students are asked to directly assemble the experimental setup and to manage the data-taking with a dedicated Android app, which exploits a client-server system that is based on the Bluetooth communication protocol. The acquired 纬-ray spectra and the experimental results are analyzed using a multiple-platform software environment and they are finally shared on an open access Web-GIS service. These all-round activities combining theoretical background, hands-on setup operations, data analysis, and critical synthesis of the results were demonstrated to be effective in increasing students' awareness in quantitatively investigating environmental radioactivity. Supporting information to the basic physics concepts provided in this article can be found at http://www.fe.infn.it/radioactivity/educational. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.10796v1-abstract-full').style.display = 'none'; document.getElementById('1901.10796v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Education Sciences, 2019 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.03419">arXiv:1809.03419</a> <span> [<a href="https://arxiv.org/pdf/1809.03419">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Geophysics">physics.geo-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.geoderma.2018.08.012">10.1016/j.geoderma.2018.08.012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Biomass water content effect on soil moisture assessment via proximal gamma-ray spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baldoncini%2C+M">Marica Baldoncini</a>, <a href="/search/physics?searchtype=author&query=Alberi%2C+M">Matteo Alberi</a>, <a href="/search/physics?searchtype=author&query=Bottardi%2C+C">Carlo Bottardi</a>, <a href="/search/physics?searchtype=author&query=Chiarelli%2C+E">Enrico Chiarelli</a>, <a href="/search/physics?searchtype=author&query=Raptis%2C+K+G+C">Kassandra Giulia Cristina Raptis</a>, <a href="/search/physics?searchtype=author&query=Strati%2C+V">Virginia Strati</a>, <a href="/search/physics?searchtype=author&query=Mantovani%2C+F">Fabio Mantovani</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1809.03419v1-abstract-short" style="display: inline;"> Proximal gamma-ray spectroscopy supported by adequate calibration and correction for growing biomass is an effective field scale technique for a continuous monitoring of top soil water content dynamics to be potentially employed as a decision support tool for automatic irrigation scheduling. This study demonstrates that this approach has the potential to be one of the best space-time trade-off met… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.03419v1-abstract-full').style.display = 'inline'; document.getElementById('1809.03419v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.03419v1-abstract-full" style="display: none;"> Proximal gamma-ray spectroscopy supported by adequate calibration and correction for growing biomass is an effective field scale technique for a continuous monitoring of top soil water content dynamics to be potentially employed as a decision support tool for automatic irrigation scheduling. This study demonstrates that this approach has the potential to be one of the best space-time trade-off methods, representing a joining link between punctual and satellite fields of view. The inverse proportionality between soil moisture and gamma signal is theoretically derived taking into account a non-constant correction due to the presence of growing vegetation beneath the detector position. The gamma signal attenuation due to biomass is modelled with a Monte Carlo-based approach in terms of an equivalent water layer which thickness varies in time as the crop evolves during its life-cycle. The reliability and effectiveness of this approach is proved through a 7 months continuous acquisition of terrestrial gamma radiation in a 0.4 ha tomato (Solanum lycopersicum) test field. We demonstrate that a permanent gamma station installed at an agricultural field can reliably probe the water content of the top soil only if systematic effects due to the biomass shielding are properly accounted for. Biomass corrected experimental values of soil water content inferred from radiometric measurements are compared with gravimetric data acquired under different soil moisture levels, resulting in an average percentage relative discrepancy of about 3% in bare soil condition and of 4% during the vegetated period. The temporal evolution of corrected soil water content values exhibits a dynamic range coherent with the soil hydraulic properties in terms of wilting point, field capacity and saturation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.03419v1-abstract-full').style.display = 'none'; document.getElementById('1809.03419v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">25 pages, 8 figures, 2 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Geoderma 335, 69-77, 2019 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.03413">arXiv:1809.03413</a> <span> [<a href="https://arxiv.org/pdf/1809.03413">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Geophysics">physics.geo-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.jenvrad.2018.06.001">10.1016/j.jenvrad.2018.06.001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Investigating the potentialities of Monte Carlo simulation for assessing soil water content via proximal gamma-ray spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baldoncini%2C+M">Marica Baldoncini</a>, <a href="/search/physics?searchtype=author&query=Alberi%2C+M">Matteo Alberi</a>, <a href="/search/physics?searchtype=author&query=Bottardi%2C+C">Carlo Bottardi</a>, <a href="/search/physics?searchtype=author&query=Chiarelli%2C+E">Enrico Chiarelli</a>, <a href="/search/physics?searchtype=author&query=Raptis%2C+K+G+C">Kassandra Giulia Cristina Raptis</a>, <a href="/search/physics?searchtype=author&query=Strati%2C+V">Virginia Strati</a>, <a href="/search/physics?searchtype=author&query=Mantovani%2C+F">Fabio Mantovani</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1809.03413v1-abstract-short" style="display: inline;"> Proximal gamma-ray spectroscopy recently emerged as a promising technique for non-stop monitoring of soil water content with possible applications in the field of precision farming. The potentialities of the method are investigated by means of Monte Carlo simulations applied to the reconstruction of gamma-ray spectra collected by a NaI scintillation detector permanently installed at an agricultura… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.03413v1-abstract-full').style.display = 'inline'; document.getElementById('1809.03413v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.03413v1-abstract-full" style="display: none;"> Proximal gamma-ray spectroscopy recently emerged as a promising technique for non-stop monitoring of soil water content with possible applications in the field of precision farming. The potentialities of the method are investigated by means of Monte Carlo simulations applied to the reconstruction of gamma-ray spectra collected by a NaI scintillation detector permanently installed at an agricultural experimental site. A two steps simulation strategy based on a geometrical translational invariance is developed. The strengths of this approach are the reduction of computational time with respect to a direct source-detector simulation, the reconstruction of $^{40}K$, $^{232}Th$ and $^{238}U$ fundamental spectra, the customization in relation to different experimental scenarios and the investigation of effects due to individual variables for sensitivity studies. The reliability of the simulation is effectively validated against an experimental measurement with known soil water content and radionuclides abundances. The relation between soil water content and gamma signal is theoretically derived and applied to a Monte Carlo synthetic calibration performed with the specific soil composition of the experimental site. Ready to use general formulae and simulated coefficients for the estimation of soil water content are also provided adopting standard soil compositions. Linear regressions between input and output soil water contents, inferred from simulated $^{40}K$ and $^{208}Tl$ gamma signals, provide excellent results demonstrating the capability of the proposed method in estimating soil water content with an average uncertainty <1%. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.03413v1-abstract-full').style.display = 'none'; document.getElementById('1809.03413v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">28 pages, 10 figures, 5 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of Environmental Radioactivity 192, 105-116, 2018 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1805.02520">arXiv:1805.02520</a> <span> [<a href="https://arxiv.org/pdf/1805.02520">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Geophysics">physics.geo-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3390/agriculture8040060">10.3390/agriculture8040060 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Modelling soil water conent in a tomato field: proximal gamma ray spectroscopy and soil-crop system models </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Strati%2C+V">Virginia Strati</a>, <a href="/search/physics?searchtype=author&query=Alberi%2C+M">Matteo Alberi</a>, <a href="/search/physics?searchtype=author&query=Anconelli%2C+S">Stefano Anconelli</a>, <a href="/search/physics?searchtype=author&query=Baldoncini%2C+M">Marica Baldoncini</a>, <a href="/search/physics?searchtype=author&query=Bittelli%2C+M">Marco Bittelli</a>, <a href="/search/physics?searchtype=author&query=Bottardi%2C+C">Carlo Bottardi</a>, <a href="/search/physics?searchtype=author&query=Chiarelli%2C+E">Enrico Chiarelli</a>, <a href="/search/physics?searchtype=author&query=Fabbri%2C+B">Barbara Fabbri</a>, <a href="/search/physics?searchtype=author&query=Guidi%2C+V">Vincenzo Guidi</a>, <a href="/search/physics?searchtype=author&query=Raptis%2C+K+G+C">Kassandra Giulia Cristina Raptis</a>, <a href="/search/physics?searchtype=author&query=Solimando%2C+D">Domenico Solimando</a>, <a href="/search/physics?searchtype=author&query=Tomei%2C+F">Fausto Tomei</a>, <a href="/search/physics?searchtype=author&query=Villani%2C+G">Giulia Villani</a>, <a href="/search/physics?searchtype=author&query=Mantovani%2C+F">Fabio Mantovani</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1805.02520v1-abstract-short" style="display: inline;"> Proximal soil sensors are taking hold in the understanding of soil hydrogeological processes involved in precision agriculture. In this context, permanently installed gamma ray spectroscopy stations represent one of the best space-time trade off methods at field scale. This study proved the feasibility and reliability of soil water content monitoring through a seven-month continuous acquisition of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.02520v1-abstract-full').style.display = 'inline'; document.getElementById('1805.02520v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1805.02520v1-abstract-full" style="display: none;"> Proximal soil sensors are taking hold in the understanding of soil hydrogeological processes involved in precision agriculture. In this context, permanently installed gamma ray spectroscopy stations represent one of the best space-time trade off methods at field scale. This study proved the feasibility and reliability of soil water content monitoring through a seven-month continuous acquisition of terrestrial gamma radiation in a tomato test field. By employing a 1 L sodium iodide detector placed at a height of 2.25 m, we investigated the gamma signal coming from an area having a ~25 m radius and from a depth of approximately 30 cm. Experimental values, inferred after a calibration measurement and corrected for the presence of biomass, were corroborated with gravimetric data acquired under different soil moisture conditions, giving an average absolute discrepancy of about 2%. A quantitative comparison was carried out with data simulated by AquaCrop, CRITeRIA, and IRRINET soil-crop system models. The different goodness of fit obtained in bare soil condition and during the vegetated period highlighted that CRITeRIA showed the best agreement with the experimental data over the entire data-taking period while, in presence of the tomato crop, IRRINET provided the best results. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.02520v1-abstract-full').style.display = 'none'; document.getElementById('1805.02520v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 9 Figures, 3 Tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Agriculture 8 (4), 2018 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1802.00327">arXiv:1802.00327</a> <span> [<a href="https://arxiv.org/pdf/1802.00327">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3390/s17081889">10.3390/s17081889 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Accuracy of Flight Altitude Measured with Low-Cost GNSS, Radar and Barometer Sensors: Implications for Airborne Radiometric Surveys </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Alberi%2C+M">Matteo Alberi</a>, <a href="/search/physics?searchtype=author&query=Baldoncini%2C+M">Marica Baldoncini</a>, <a href="/search/physics?searchtype=author&query=Bottardi%2C+C">Carlo Bottardi</a>, <a href="/search/physics?searchtype=author&query=Chiarelli%2C+E">Enrico Chiarelli</a>, <a href="/search/physics?searchtype=author&query=Fiorentini%2C+G">Giovanni Fiorentini</a>, <a href="/search/physics?searchtype=author&query=Raptis%2C+K+G+C">Kassandra Giulia Cristina Raptis</a>, <a href="/search/physics?searchtype=author&query=Realini%2C+E">Eugenio Realini</a>, <a href="/search/physics?searchtype=author&query=Reguzzoni%2C+M">Mirko Reguzzoni</a>, <a href="/search/physics?searchtype=author&query=Rossi%2C+L">Lorenzo Rossi</a>, <a href="/search/physics?searchtype=author&query=Sampietro%2C+D">Daniele Sampietro</a>, <a href="/search/physics?searchtype=author&query=Strati%2C+V">Virginia Strati</a>, <a href="/search/physics?searchtype=author&query=Mantovani%2C+F">Fabio Mantovani</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1802.00327v1-abstract-short" style="display: inline;"> Flight height is a fundamental parameter for correcting the gamma signal produced by terrestrial radionuclides measured during airborne surveys. The frontiers of radiometric measurements with UAV require light and accurate altimeters flying at some 10 m from the ground. We equipped an aircraft with seven altimetric sensors (three low-cost GNSS receivers, one inertial measurement unit, one radar al… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.00327v1-abstract-full').style.display = 'inline'; document.getElementById('1802.00327v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1802.00327v1-abstract-full" style="display: none;"> Flight height is a fundamental parameter for correcting the gamma signal produced by terrestrial radionuclides measured during airborne surveys. The frontiers of radiometric measurements with UAV require light and accurate altimeters flying at some 10 m from the ground. We equipped an aircraft with seven altimetric sensors (three low-cost GNSS receivers, one inertial measurement unit, one radar altimeter and two barometers) and analyzed $\sim$ 3 h of data collected over the sea in the (35-2194) m altitude range. At low altitudes (H $<$ 70 m) radar and barometric altimeters provide the best performances, while GNSS data are used only for barometer calibration as they are affected by a large noise due to the multipath from the sea. The $\sim$ 1 m median standard deviation at 50 m altitude affects the estimation of the ground radioisotope abundances with an uncertainty less than 1.3%. The GNSS double-difference post-processing enhanced significantly the data quality for H $>$ 80 m in terms of both altitude median standard deviation and agreement between the reconstructed and measured GPS antennas distances. Flying at 100 m the estimated uncertainty on the ground total activity due to the uncertainty on the flight height is of the order of 2%. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.00327v1-abstract-full').style.display = 'none'; document.getElementById('1802.00327v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 January, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2018. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1712.04797">arXiv:1712.04797</a> <span> [<a href="https://arxiv.org/pdf/1712.04797">pdf</a>, <a href="https://arxiv.org/format/1712.04797">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atmospheric and Oceanic Physics">physics.ao-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Geophysics">physics.geo-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.atmosenv.2017.09.048">10.1016/j.atmosenv.2017.09.048 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exploring atmospheric radon with airborne gamma-ray spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baldoncini%2C+M">Marica Baldoncini</a>, <a href="/search/physics?searchtype=author&query=Alb%C3%A9ri%2C+M">Matteo Alb茅ri</a>, <a href="/search/physics?searchtype=author&query=Bottardi%2C+C">Carlo Bottardi</a>, <a href="/search/physics?searchtype=author&query=Minty%2C+B">Brian Minty</a>, <a href="/search/physics?searchtype=author&query=Raptis%2C+K+G+C">Kassandra G. C. Raptis</a>, <a href="/search/physics?searchtype=author&query=Strati%2C+V">Virginia Strati</a>, <a href="/search/physics?searchtype=author&query=Mantovani%2C+F">Fabio Mantovani</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1712.04797v1-abstract-short" style="display: inline;"> $^{222}$Rn is a noble radioactive gas produced along the $^{238}$U decay chain, which is present in the majority of soils and rocks. As $^{222}… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.04797v1-abstract-full').style.display = 'inline'; document.getElementById('1712.04797v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1712.04797v1-abstract-full" style="display: none;"> $^{222}$Rn is a noble radioactive gas produced along the $^{238}$U decay chain, which is present in the majority of soils and rocks. As $^{222}$Rn is the most relevant source of natural background radiation, understanding its distribution in the environment is of great concern for investigating the health impacts of low-level radioactivity and for supporting regulation of human exposure to ionizing radiation in modern society. At the same time, $^{222}$Rn is a widespread atmospheric tracer whose spatial distribution is generally used as a proxy for climate and pollution studies. Airborne gamma-ray spectroscopy (AGRS) always treated $^{222}$Rn as a source of background since it affects the indirect estimate of equivalent $^{238}$U concentration. In this work the AGRS method is used for the first time for quantifying the presence of $^{222}$Rn in the atmosphere and assessing its vertical profile. High statistics radiometric data acquired during an offshore survey are fitted as a superposition of a constant component due to the experimental setup background radioactivity plus a height dependent contribution due to cosmic radiation and atmospheric $^{222}$Rn. The refined statistical analysis provides not only a conclusive evidence of AGRS $^{222}$Rn detection but also a (0.96 $\pm$ 0.07) Bq/m$^{3}$ $^{222}$Rn concentration and a (1318 $\pm$ 22) m atmospheric layer depth fully compatible with literature data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.04797v1-abstract-full').style.display = 'none'; document.getElementById('1712.04797v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 December, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">17 pages, 8 figures, 2 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Atmospheric Environment 170, no. Supplement C (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1712.04777">arXiv:1712.04777</a> <span> [<a href="https://arxiv.org/pdf/1712.04777">pdf</a>, <a href="https://arxiv.org/format/1712.04777">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atmospheric and Oceanic Physics">physics.ao-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Geophysics">physics.geo-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/TGRS.2017.2755466">10.1109/TGRS.2017.2755466 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Airborne gamma-ray spectroscopy for modeling cosmic radiation and effective dose in the lower atmosphere </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baldoncini%2C+M">Marica Baldoncini</a>, <a href="/search/physics?searchtype=author&query=Alb%C3%A9ri%2C+M">Matteo Alb茅ri</a>, <a href="/search/physics?searchtype=author&query=Bottardi%2C+C">Carlo Bottardi</a>, <a href="/search/physics?searchtype=author&query=Minty%2C+B">Brian Minty</a>, <a href="/search/physics?searchtype=author&query=Raptis%2C+K+G+C">Kassandra G. C. Raptis</a>, <a href="/search/physics?searchtype=author&query=Strati%2C+V">Virginia Strati</a>, <a href="/search/physics?searchtype=author&query=Mantovani%2C+F">Fabio Mantovani</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1712.04777v1-abstract-short" style="display: inline;"> In this paper we present the results of a $\sim$5 hour airborne gamma-ray survey carried out over the Tyrrhenian sea in which the height range (77-3066) m has been investigated. Gamma-ray spectroscopy measurements have been performed by using the AGRS_16L detector, a module of four 4L NaI(Tl) crystals. The experimental setup was mounted on the Radgyro, a prototype aircraft designed for multisensor… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.04777v1-abstract-full').style.display = 'inline'; document.getElementById('1712.04777v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1712.04777v1-abstract-full" style="display: none;"> In this paper we present the results of a $\sim$5 hour airborne gamma-ray survey carried out over the Tyrrhenian sea in which the height range (77-3066) m has been investigated. Gamma-ray spectroscopy measurements have been performed by using the AGRS_16L detector, a module of four 4L NaI(Tl) crystals. The experimental setup was mounted on the Radgyro, a prototype aircraft designed for multisensorial acquisitions in the field of proximal remote sensing. By acquiring high-statistics spectra over the sea (i.e. in the absence of signals having geological origin) and by spanning a wide spectrum of altitudes it has been possible to split the measured count rate into a constant aircraft component and a cosmic component exponentially increasing with increasing height. The monitoring of the count rate having pure cosmic origin in the >3 MeV energy region allowed to infer the background count rates in the $^{40}$K, $^{214}$Bi and $^{208}$Tl photopeaks, which need to be subtracted in processing airborne gamma-ray data in order to estimate the potassium, uranium and thorium abundances in the ground. Moreover, a calibration procedure has been carried out by implementing the CARI-6P and EXPACS dosimetry tools, according to which the annual cosmic effective dose to human population has been linearly related to the measured cosmic count rates. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.04777v1-abstract-full').style.display = 'none'; document.getElementById('1712.04777v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 December, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">25 pages, 10 figures, 5 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> IEEE Transactions on Geoscience and Remote Sensing (Volume: PP, Issue: 99) (2017) </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 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