An Integrated Approach for Ground and Drone-Borne Magnetic Surveys and their Interpretation in Archaeological Prospection

Gavazzi, Bruno; Reiller, Hugo; Munschy, Marc

doi:10.4000/archeosciences.9325

Cited by 4 publications

(6 citation statements)

References 9 publications

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“…Another unexpected result is to be noted with regard to the sensitivity of the R4 three‐axis fluxgates: A geological structure extending over several hundred metres, which can also be seen in historical aerial photographs and recent DOPs, was detected by the R4 system as a very weak anomaly (Figure 3d). Regarding these results and the statement of Gavazzi et al (2021) that drone borne three‐axis fluxgate data allow similar observations as ground‐based vector magnetometer data motivates us to realize a similar comparison with the R4 data. However, the question of how far the R4 resolution and FGM3D/75 sensitivity reaches ground‐based magnetometers has yet to be tested.…”

Section: Resultssupporting

confidence: 71%

“…Moreover, recent studies by Gavazzi et al (2021) show that UAV-borne three-component fluxgate magnetometer data provide comparable observations to ground-based vertical gradient fluxgates.…”

mentioning

confidence: 75%

“…Gavazzi et al (2017) discuss already the potential of the lightweight three‐axis fluxgate magnetometers for archaeological prospecting and show their reliability and fast survey progress. Moreover, recent studies by Gavazzi et al (2021) show that UAV‐borne three‐component fluxgate magnetometer data provide comparable observations to ground‐based vertical gradient fluxgates. Their results motivated us to test a sophisticated commercial UAV‐fixed magnetometer system with multiple three‐axis fluxgates in an area, where we expected a large range of archaeological features and strong magnetic anomalies.…”

Section: Introductionmentioning

confidence: 83%

“…Three-axis fluxgates are based on the same physical principles as fluxgate gradiometers (Gavazzi et al, 2021) and show similar technical parameters in terms of resolution, temperature drift and sensitivity.…”

Section: Archaeological and Geophysical Interpretationmentioning

confidence: 99%

“…Three‐axis fluxgates are based on the same physical principles as fluxgate gradiometers (Gavazzi et al, 2021) and show similar technical parameters in terms of resolution, temperature drift and sensitivity. However, because three axes of the magnetic field are measured, the output is more similar to the total field/scalar magnetometers.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

UAV magnetometer survey in low‐level flight for archaeology: Case study of a Second World War airfield at Ganacker (Lower Bavaria, Germany)

Stele¹,

Linck

Schikorra³

et al. 2022

Archaeological Prospection

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Unmanned aerial vehicle (UAV)‐based magnetometer systems became more and more attractive for large‐scale archaeological prospection in recent years. Although their sensors exhibit the same sensitivity than the ground‐based prospecting systems, UAV prospecting is seriously handicapped by the magnetic and mechanical disturbances of the drone and by limitations of a low‐level flight. To minimize these disturbances, scalar magnetometers are attached only on a tether 2.5–10 m beneath the drone to be flown as close as possible above the ground. First, test measurements with UAV‐fixed fluxgate magnetometers provide more accurate results than the scalar magnetometers in any configuration but have to overcome disturbance by vibrations. Here, we present a case study choosing the compact set‐up of the Sensys MagDrone R4. The high sampling rate of 200 Hz of the three axis fluxgate sensors of the R4 allows sufficient filtering of the interferences generated by the UAV and external disturbances. High‐precision flight control of the drone allows operating the sensors by radar‐controlled flight height ∼1 m above the ground, which is a fundamental and indispensable prerequisite for archaeological prospecting. For our test, we choose the site Ganacker (southern Bavaria), where we expected a large range of archaeological structures and features with high magnetic contrast. We compare and verify the magnetogram with historical and recent geodata. Our results show that the R4 system offers an outstanding step forward regarding a successful application for archaeological prospection. Already now, the system is well suited for the fast mapping of large areas and archaeological sites with intense magnetic anomalies.

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Section: Resultssupporting

confidence: 71%

mentioning

confidence: 75%

Section: Introductionmentioning

confidence: 83%

Section: Archaeological and Geophysical Interpretationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

UAV magnetometer survey in low‐level flight for archaeology: Case study of a Second World War airfield at Ganacker (Lower Bavaria, Germany)

Stele¹,

Linck

Schikorra³

et al. 2022

Archaeological Prospection

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Drone-based magnetometer prospection for archaeology

Stele,

Kaub,

Linck

et al. 2023

Journal of Archaeological Science

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Evolution of Geophysical Techniques over the last twenty years: Commercialization, societal impact, and research and development perspectives

Paixach

2024

E3S Web Conf.

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Geophysics plays a crucial role in critical sectors such as energy, mineral resources, water, the environment, and waste and natural risk management. Geophysicists navigate a constantly evolving technological landscape, leveraging innovations ranging from cloud computing, robotics, IoT, and numerical simulation to artificial intelligence. As key players at the intersection of these advancements, geophysicists must meet the needs of both industries and an increasingly engaged public, providing a fertile ground for research, development, and entrepreneurship. The analysis of geophysicists' testimonies, also involved in entrepreneurship, highlights the major trends of the last two decades and offers insights into the future developments of this discipline.

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An Integrated Approach for Ground and Drone-Borne Magnetic Surveys and their Interpretation in Archaeological Prospection

Abstract: Highlights:• Availability of fast and precise ground and drone-borne magnetic surveys.• Extraction of information on the sources through potential field transforms.

Cited by 4 publications

References 9 publications

UAV magnetometer survey in low‐level flight for archaeology: Case study of a Second World War airfield at Ganacker (Lower Bavaria, Germany)

UAV magnetometer survey in low‐level flight for archaeology: Case study of a Second World War airfield at Ganacker (Lower Bavaria, Germany)

Drone-based magnetometer prospection for archaeology

Evolution of Geophysical Techniques over the last twenty years: Commercialization, societal impact, and research and development perspectives

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