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Analysis and interpretation of GPR datasets for integrated archaeological mapping
Author(s) -
Conyers Lawrence B.
Publication year - 2015
Publication title -
near surface geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.639
H-Index - 39
eISSN - 1873-0604
pISSN - 1569-4445
DOI - 10.3997/1873-0604.2015018
Subject(s) - ground penetrating radar , reflection (computer programming) , geology , outcrop , interpretation (philosophy) , transect , excavation , regional geology , remote sensing , classification of discontinuities , paleontology , radar , computer science , tectonics , telecommunications , oceanography , mathematical analysis , mathematics , metamorphic petrology , programming language
An integrated approach to ground‐penetrating radar interpretation should include not only the standard amplitude slice maps and isosurface renderings but also an analysis of individual reflection traces and adjusted and processed reflection profiles. Only when all those basic datasets are interpreted can the plethora of reflection features at various depths and locations within a grid be understood, especially in complex geological and archaeological settings. Topographically adjusted profiles can provide important clues to changes in reflectivity along a transect, indicating why certain amplitude features are visible (or not) in slice maps. An integration of excavation and outcrop data with reflection profiles can often indicate what features are producing high‐amplitude reflections and which are yielding no reflection at all. Even individual reflection traces can be studied for polarity changes, which can help in identifying the types of buried materials that are producing reflections. All these datasets, some of which are often overlooked, must be integrated during interpretation, especially in complicated ground conditions.