Resolution of ground‐penetrating radar reflections at differing frequencies

Grealy, Michael

doi:10.1002/arp.283

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…Nonetheless, 100 MHz is the optimal frequency at the testsite, considering the depth and the resolution of the burnt layer. The selection of antennas with the correct operating frequency necessary for the depth and the resolution of the features of archaeological interests is one of the most important decisions in GPR archaeological survey (Jol 1995;Smith & Jol 1995;Grealy 2006). Nonetheless, the results obtained at the test-site with the proposed procedure provide a remarkable amount of new subsurface information compared to previous GPR experiments in the area.…”

Section: Discussion S a N D C O N C L U S I O N Smentioning

confidence: 99%

Advances in GPR data acquisition and analysis for archaeology

Zhao

Tian

Forte

et al. 2015

Geophysical Journal International

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The primary objective of this study is to evaluate the applicability and the effectiveness of ground-penetrating radar (GPR) to identify a thin burnt soil layer, buried more than 2 m below the topographic surface at the Liangzhu Site, in Southeastern China. The site was chosen for its relatively challenging conditions of GPR techniques due to electrical conductivity and to the presence of peach tree roots that produced scattering. We completed the data acquisition by using 100 and 200 MHz antennas in TE and TM broadside and cross-polarized configurations. In the data processing and interpretation phase, we used GPR attribute analysis, including instantaneous phase and geometrical attributes. Validation analysis ground-truthing performed after the geophysical surveys, validated the GPR imaging, confirmed the electrical conductivity and relative dielectric permittivity (RDP) measurements performed at different depths, and allowed a reliable quantitative correlation between GPR results and subsurface physical properties. The research demonstrates that multiple antenna configurations in GPR data acquisition combined with attribute analysis can enhance the ability to characterize prehistoric archaeological remains even in complex subsurface conditions.

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Section: Discussion S a N D C O N C L U S I O N Smentioning

confidence: 99%

Advances in GPR data acquisition and analysis for archaeology

Zhao

Tian

Forte

et al. 2015

Geophysical Journal International

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“…Reflection profiles also showed a very subtle sloping reflection beneath this architecture, which appeared to be a living surface, hypothesized to represent the topography of the valley prior to the 1st century AD urbanization construction episode, which covered it and levelled the area for the impressive structures that the site is known for today. Horizon-specific maps were constructed along that surface, which showed the remains of simple buildings (Grealy, 2006) and possible pathways between them. Some of these buildings had earlier been exposed, described and dated along the north edge of the site.…”

Section: Ideas For the Future Of Geophysical Archaeology With Gpr As mentioning

confidence: 99%

Geophysical Archaeology Research Agendas for the Future: Some Ground‐penetrating Radar Examples

Conyers

Leckebusch

2010

Archaeological Prospection

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Archaeological geophysics research and its applications to archaeology are today positioned to move in a number of directions, building on successesin the past few decades.The basics of data acquisition, processing andinterpretation are now commonplace, and along with a variety of new geophysical tools and software, readily available to most dedicated practitioners.It is now time to move beyond the basics to develop new areas of research for the coming decades. Here, we propose some future avenues that can be followed, using ground-penetrating radar (GPR) as an example. One avenue is the application of these techniques to test ideas about culture and history in ways not possible using traditional archaeological methods. Another is the application of sophisticated new equipment and three-dimensional processing methods that can produce greater precision in the products produced, while simplifying data acquisition and revealing more information about buried archaeological features. While we discuss below our ideas with regard to the future of GPR, these basic concepts and future pathways are potentially applicable to the other commonly used near-surface geophysical methods.

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“…Areas with no significant reflection are probably open spaces or pathways between buildings on that early Nabataean living surface. This type of GPR analysis produces horizon-specific maps showing the remains of simple buildings (Grealy 2006) and possible pathways between them. The pathways are identifiable as linear zones of no reflection, which led from the highlands to the south, toward the water drainage to the north ( Figure 5B and C).…”

Section: Petra Jordanmentioning

confidence: 99%

Ground-penetrating radar for anthropological research

Conyers

2010

Antiquity

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During its development years, geophysical survey has served field archaeology by defining possible sites underground, prior to excavation or preservation. Now we can see the art taking off as a research method in its own right. After summarising some recent research applications of magnetic mapping, the author gives us three case studies from USA and Jordan, where ground-penetrating radar (GPR) has produced new interpretations of prehistory and history. Since GPR can map in horizontal slices without damage, it opens up important heritage preservation options. In one case, excavation was discouraged on ethical grounds, in another it was inhibited by the presence of later monuments and in a third, an early agricultural site, the GPR actually saw more than the excavators. This presages a research tool of particular power.

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Resolution of ground‐penetrating radar reflections at differing frequencies

Cited by 10 publications

References 4 publications

Advances in GPR data acquisition and analysis for archaeology

Advances in GPR data acquisition and analysis for archaeology

Geophysical Archaeology Research Agendas for the Future: Some Ground‐penetrating Radar Examples

Ground-penetrating radar for anthropological research

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