A LTS-SQUID System for Archaeological Prospection and Its Practical Test in Peru

Linzen, S.; Chwala, A.; Schultze, V.; Schulz, M.; Schüler, Tim; Stolz, R.; Bondarenko, N. F.; Meyer, H.‐G.

doi:10.1109/tasc.2007.898570

Cited by 24 publications

(19 citation statements)

References 6 publications

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“…This way, dozens of hectares have been already prospected by use of the SQUID system for different purposes. Archaeologists for instance are able to discover and localize buried structures on the base of the generated georeferenced magnetic maps [5], [6].…”

Section: System Descriptionmentioning

confidence: 99%

Detection of buried magnetic objects by a SQUID gradiometer system

et al. 2009

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We present a magnetic detection system based on superconducting gradiometric sensors (SQUID gradiometers). The system provides a unique fast mapping of large areas with a high resolution of the magnetic field gradient as well as the local position. A main part of this work is the localization and classification of magnetic objects in the ground by automatic interpretation of geomagnetic field gradients, measured by the SQUID system. In accordance with specific features the field is decomposed into segments, which allow inferences to possible objects in the ground. The global consideration of object describing properties and their optimization using error minimization methods allows the reconstruction of superimposed features and detection of buried objects. The analysis system of measured geomagnetic fields works fully automatically. By a given surface of area-measured gradients the algorithm determines within numerical limits the absolute position of objects including depth with sub-pixel accuracy and allows an arbitrary position and attitude of sources. Several SQUID gradiometer data sets were used to show the applicability of the analysis algorithm.

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Section: System Descriptionmentioning

confidence: 99%

Detection of buried magnetic objects by a SQUID gradiometer system

et al. 2009

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“…Laptop and acquisition unit are linked by Ethernet via a glass fibre cable. Details on the data acquisition and processing are described in Linzen et al, (2007). A rough magnetic field gradient map can be calculated very rapidly during measurement pauses.…”

Section: The Complete Systemmentioning

confidence: 99%

Rapid and sensitive magnetometer surveys of large areas using SQUIDs – the measurement system and its application to the Niederzimmern Neolithic double‐ring ditch exploration

Schultze

Linzen

Schüler³

et al. 2008

Archaeological Prospection

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Ageomagnetic field measurement system for the detection ofarchaeologicalsignaturesinthe subsoil is presented based on the superconducting quantum interference device (SQUID). The system provides fast mapping of large areas with high magnetic field gradient resolution as well as lateral precision. The acquired data are geographically referenced and also the altitude profile is given. The properties of the system were tested intensively at the large Neolithic double-ring ditch enclosure of Niederzimmern near Weimar, Germany. Differences of the signal acquisition compared with caesium magnetometers are discussed. In the Niederzimmern double-ring ditch enclosure, with an area of 27 ha, archaeological patterns were found only near the gates. These SQUID measurements, together with accompanying excavations, provide a complex picture of the double-ring ditch enclosure, dated about 5600 years old.

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“…High-sensitivity sensors detect very small contrasts in magnetic property in the subsurface, which are potentially caused by differences in the composition density or treatment of subsoil materials. In order to realize a very fast, efficient, and sensitive tool for geo-magnetic mapping, a measurement system on the base of superconducting quantum interference devices (SQUIDs) was jointly developed at IPHT Jena and Supracon AG [1]. The cryo-cooled sensors are produced in thin-film technology and constructed as planar-type magnetometers or gradiometers [2].…”

Section: Introductionmentioning

confidence: 99%

Inversion of Geo-Magnetic SQUID Gradiometer Prospection Data Using Polyhedral Model Interpretation of Elongated Anomalies

et al. 2014

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This paper is based on data sets acquired by a fast and efficient ground-based measurement system, which is based on superconducting quantum interference device technology and ensures geo-magnetic mapping of large areas. The local variations (gradients) of the Earth's magnetic field are represented in so-called magnetograms, which typically include a large number of magnetic anomalies with different appearance and shape. Here, elongated anomalies are investigated, which are explainable by a polyhedral source body. These underground structures can be represented by a cross section that is approximately uniform along the main strike extent of the source. After introducing the measurement system, a source description model is developed theoretically and in the following adapted to practical problems. In order to illustrate the utility of this kind of minimization-based inversion and to validate the produced results, an example of archaeological measurements in Mongolia is shown. Results of the field measurements are used for inversion toward a description of possible subsoil situation. Finally, an excavation shows the accuracy of the results.

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A LTS-SQUID System for Archaeological Prospection and Its Practical Test in Peru

Cited by 24 publications

References 6 publications

Detection of buried magnetic objects by a SQUID gradiometer system

Detection of buried magnetic objects by a SQUID gradiometer system

Rapid and sensitive magnetometer surveys of large areas using SQUIDs – the measurement system and its application to the Niederzimmern Neolithic double‐ring ditch exploration

Inversion of Geo-Magnetic SQUID Gradiometer Prospection Data Using Polyhedral Model Interpretation of Elongated Anomalies

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