Application of aeromagnetic data to mineral potential evaluation in Minnesota

Spector, Allan; Lawler, Thomas L.

doi:10.1190/1.1443903

Cited by 11 publications

(3 citation statements)

References 5 publications

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“…자력탐사는 가장 오래전부터 수행되어 온 물리탐사 방법 의 하나다. 특히, 유인 비행기나 헬기를 이용한 항공 자력탐 사는 넓은 영역을 신속히 탐사할 수 있어 광역 지질조사나 광물자원 탐사에 많이 활용되고 있다 (Taylor et al, 1968;Spector and Lawler, 1995;Amigun et al, 2012;Kim et al, 2021). 그러나 유인항공기를 임대하려면 고가의 비용을 지 불해야 할 뿐만 아니라 이착륙장 섭외 및 허가, 조종사의 안 전 문제 등의 복잡한 문제가 있어 그 활용이 제한적이다.…”

Section: 서 론unclassified

A Review on Multirotor UAV-based Magnetic Surveys for Near-Surface Targets

Sh¹,

Kim²

2022

J. Korean Soc. Miner. Energy Resour. Eng.

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The development of unmanned aerial vehicles (UAVs), has led to extensive investigations of the applicability of magnetic surveys using various UAV systems, such as a recent multirotor UAV-based magnetic survey. Herein, we analyzed studies that focused on the detection of near-surface targets. In particular, recent studies have examined the installation position and configuration of the magnetometer, and the usage of sensors to improve the positioning accuracy of the multirotor UAVs. We introduced data analysis and processing methods to consider noise generated by multirotor UAVs, and various interpretation methods. The cases presented here show that multirotor UAV-based magnetic surveys have strengths in small-scale target detection with close-to-surface flight and that high-resolution data can be acquired through precise flight for the survey area. This technology is expected to be particularly useful for the detection of man-made objects and subsurface infrastructures, and for archaeological prospection.

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Section: 서 론unclassified

A Review on Multirotor UAV-based Magnetic Surveys for Near-Surface Targets

Sh¹,

Kim²

2022

J. Korean Soc. Miner. Energy Resour. Eng.

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“…Geomagnetic method is an effective tool in investigating magnetized geologic sources (Boukerbout et al., 2018; Ekinci, Büyüksaraç, et al., 2020; Ekinci & Yiğitbaş, 2012; Ekvok et al., 2022; Essa, Munschy, et al., 2022; Kaftan, 2017; Oruç, 2011; Pham et al., 2022; Xu et al., 2011). Additionally, it is frequently applied in economic resource explorations due to the adequate magnetization contrast between surrounding rocks and ore/mineral deposits (Bencharef et al., 2022; Biswas, 2018; Eldosouky et al., 2021; Hinze et al., 2013; Kharbish et al., 2022; Spector & Lawler, 1995). Estimation of source‐body model parameters is an essential step in the interpretation of geomagnetic anomalies (Ekinci et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

Inversion of Geomagnetic Anomalies Caused by Ore Masses Using Hunger Games Search Algorithm

Ai,

Ekinci,

Balkaya

et al. 2023

Earth and Space Science

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Geomagnetic anomaly interpretation through inversion procedures often yields useful results in determining the key details of ore masses. However, the problem is complicated due to the known ambiguous phenomena of the inversion process. Thus, details such as location, depth and shape can only be estimated using an efficient algorithm. To this end, we presented here a novel global optimization algorithm called Hunger Games Search (HGS) for the inversion of geomagnetic anomalies caused by ore masses. HGS is a well‐organized metaheuristic inspired by the hunger‐driven instincts and social behavioral decisions of animals. This is the first work in the literature to introduce this optimizer for the inversion of geophysical anomalies. We revealed the model parameter dependencies and the optimum control parameter values of the algorithm by performing some modal analyses and parameter tuning studies, respectively. The capability of HGS was demonstrated on synthetically produced geomagnetic responses and on three real anomalies obtained from some exploration fields in India and the USA. Uncertainty appraisal studies showed the solidity of the outputs of the algorithm. Moreover, some comparative studies with the fine‐tuned standard Particle Swarm Optimization, a commonly used tool for the inversion of geophysical anomalies, indicated that HGS algorithm provides better results in terms of convergence characteristics and solution stabilities in the presented inverse problem. We therefore recommend the use of this metaheuristic in model parameter estimation studies when dealing with this kind of geophysical potential field problems.

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“…The rugged terrain and other factors also create many exploring blind spots. The aeromagnetic survey [4][5][6][7][8][9][10][11][12][13][14] is a high technology that combines geophysical exploration techniques with aviation technology [15][16][17][18]. It is used to investigate and identify mineral resources and subsurface geological structures, with high-precision optically pumped magnetometers and real-time compensation systems mounted on the aircraft to detect changes in the magnetic field while the aircraft is in operation.…”

Section: Introductionmentioning

confidence: 99%

Occurrence Characteristics of Lead–Zinc Mine and Low-Flying Aeromagnetic Prospecting in a Forested Region of Yichun City

Ji,

Qin,

et al. 2023

Minerals

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Understanding the characteristics of lead–zinc mine occurrences and mastering effective investigative techniques are paramount in modern ore prospecting. This research focuses on the forested region of Yichun city in China, with a specific emphasis on the strategic mineral resource of a lead–zinc mine. The study examines the distribution patterns of this mineral and employs advanced aeromagnetic exploration methods. Firstly, we analyzed the geological structure and features of the region by leveraging the latest high-precision aeromagnetic data collected using dynamic delta wing technology. This analysis was complemented by an assessment of the geological conditions of the research area, existing lead–zinc deposits, ground magnetic surveys, and verification studies. With the goal of establishing a meaningful correlation between aeromagnetic anomalies and lead–zinc deposits, we employed various potential field conversion techniques, including the reduction to the pole, vertical derivatives, upward continuation, and residual anomaly analysis techniques. Secondly, we investigated the metallogenic sites within this region and provided a comprehensive summary of the metallogenic circumstances and characteristics related to aeromagnetic prospecting. Thirdly, we employed human–computer interaction fitting inversion techniques to predict the potential for lead–zinc mine prospecting in areas exhibiting aeromagnetic anomalies. The study underscores the significance of high-amplitude and large-scale aeromagnetic anomalies in the study area. Furthermore, we examined the interplay between intrusive rocks, strata, and structural elements within the region to identify favorable conditions for lead–zinc mineralization. As a result of our analysis and discussions, a location was predicted where a lead–zinc mine may exist. The research methodology outlined in this article provides valuable insights for future lead–zinc mine exploration efforts in areas characterized by similar geological conditions.

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Application of aeromagnetic data to mineral potential evaluation in Minnesota

Cited by 11 publications

References 5 publications

A Review on Multirotor UAV-based Magnetic Surveys for Near-Surface Targets

A Review on Multirotor UAV-based Magnetic Surveys for Near-Surface Targets

Inversion of Geomagnetic Anomalies Caused by Ore Masses Using Hunger Games Search Algorithm

Occurrence Characteristics of Lead–Zinc Mine and Low-Flying Aeromagnetic Prospecting in a Forested Region of Yichun City

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