scholarly journals The usefulness of ground-penetrating radar images for the research of a large sand-bed braided river: case study from the Vistula River (central Poland)

Geologos ◽  
2014 ◽  
Vol 20 (1) ◽  
pp. 35-47 ◽  
Author(s):  
Anna Lejzerowicz ◽  
Sebastian Kowalczyk ◽  
Anna Wysocka
Keyword(s):  
Ground Penetrating Radar ◽  
Data Set ◽  
High Resolution Data ◽  
Radar Images ◽  
Central Poland ◽  
Vistula River ◽  
Point Data ◽  
Ground Penetrating ◽  
Radar Facies

Abstract Ground-penetrating radar (GPR) surveys and sedimentological outcrop analyses were combined in order to determine the reflection patterns and internal architecture of terrace deposits of the Vistula River at Kępa Zawadowska in the southern part of Warsaw (central Poland). The sedimentary analyses concerned the granulometric composition and lithofacies analysis. The 34 GPR profiles, which were obtained in two outcrops, using a Malå RAMAC/GPR system with 500-MHz and 250-MHz shielded antennas, were up to 100 m long. The most characteristic ground-penetrating radar profiles are presented; they show a high-resolution data set of radar facies. The GPR data suggest the presence of three geophysically different units, namely with high-angle inclined reflections (radar facies 1), with discontinuous undulating or trough-shaped reflections (radar facies 2), and with low-angle reflections (radar facies 3). The internal structure of the fluvial deposits was obtained by integration of the GPR and sedimentological data, which combination provides a more accurate visualisation of sedimentary units than do reconstructions that are based only on standard lithologic point data.

Resistivity and ground-penetrating radar images of fractures in a crystalline aquifer: a case study in Caiçara farm—NE Brazil

2004 ◽  
Vol 56 (4) ◽  
pp. 295-307 ◽  
Author(s):  
Carlos César Nascimento da Silva ◽  
Walter Eugênio de Medeiros ◽  
Emanuel Ferraz Jardim de Sá ◽  
Pedro Xavier Neto
Keyword(s):  
Ground Penetrating Radar ◽  
Radar Images ◽  
Crystalline Aquifer ◽  
Ground Penetrating

scholarly journals Reading of Ground-Penetrating Radar (GPR) Images of Prehistoric Flint Mine; Case Study from Krzemionki Opatowskie Archaeological Site In Central Poland

2016 ◽  
Vol 33 (2) ◽  
pp. 117-130 ◽  
Author(s):  
Fabian Welc ◽  
Radosław Mieszkowski ◽  
Lawrence B. Conyers ◽  
Janusz Budziszewski ◽  
Artur Jedynak
Keyword(s):  
Ground Penetrating Radar ◽  
Archaeological Site ◽  
Mining District ◽  
Two Dimensional ◽  
Central Poland ◽  
Geophysical Surveys ◽  
Prehistoric Mining ◽  
Ground Penetrating

Abstract Geophysical surveys conducted in order to map tunnels and vertical shafts at the Neolithic chert mining field Krzemionki used a ground-penetrating radar(GPR to test hypotheses regarding orientation, depth and subsurface complexity of these voids.Using two-dimensional reflection profiles the vertical shafts, now mostly filled with lithic debris, were easily visible. Amplitude mapping visualized debris at shaft margins as well as a collapsed material inside the voids. Some shallower horizontal tunnels were also visible as sub-horizontal planar reflections generated from both ceiling and floors of these void spaces. Extension of these interpretations to un-mapped areas of the ancient mining district and complexity of these prehistoric mining features could be examined to determine excavation intensity and exploitation techniques used during the Neolithic.

Seismic reflection and ground‐penetrating radar imaging of a shallow aquifer

Geophysics ◽  
1998 ◽  
Vol 63 (4) ◽  
pp. 1310-1317 ◽  
Author(s):  
Steven J. Cardimona ◽  
William P. Clement ◽  
Katharine Kadinsky‐Cade
Keyword(s):  
Water Table ◽  
Ground Penetrating Radar ◽  
Low Frequency ◽  
Shallow Aquifer ◽  
Cone Penetrometer ◽  
Gradual Change ◽  
Cone Penetration ◽  
Geotechnical Data ◽  
Radar Images ◽  
Ground Penetrating

In 1995 and 1996, researchers associated with the US Air Force’s Phillips and Armstrong Laboratories took part in an extensive geophysical site characterization of the Groundwater Remediation Field Laboratory located at Dover Air Force Base, Dover, Delaware. This field experiment offered an opportunity to compare shallow‐reflection profiling using seismic compressional sources and low‐frequency ground‐penetrating radar to image a shallow, unconfined aquifer. The main target within the aquifer was the sand‐clay interface defining the top of the underlying aquitard at 10 to 14 m depth. Although the water table in a well near the site was 8 m deep, cone penetration geotechnical data taken across the field do not reveal a distinct water table. Instead, cone penetration tests show a gradual change in electrical properties that we interpret as a thick zone of partial saturation. Comparing the seismic and radar data and using the geotechnical data as ground truth, we have associated the deepest coherent event in both reflection data sets with the sand‐clay aquitard boundary. Cone penetrometer data show the presence of a thin lens of clays and silts at about 4 m depth in the north part of the field. This shallow clay is not imaged clearly in the low‐frequency radar profiles. However, the seismic data do image the clay lens. Cone penetrometer data detail a clear change in the soil classification related to the underlying clay aquitard at the same position where the nonintrusive geophysical measurements show a change in image character. Corresponding features in the seismic and radar images are similar along profiles from common survey lines, and results of joint interpretation are consistent with information from geotechnical data across the site.

scholarly journals Ground penetrating radar: a case study for estimating root bulking rate in cassava (Manihot esculenta Crantz)

Plant Methods ◽  
2017 ◽  
Vol 13 (1) ◽  
Author(s):  
Alfredo Delgado ◽  
Dirk B. Hays ◽  
Richard K. Bruton ◽  
Hernán Ceballos ◽  
Alexandre Novo ◽  
...  
Keyword(s):  
Ground Penetrating Radar ◽  
Manihot Esculenta ◽  
Manihot Esculenta Crantz ◽  
Ground Penetrating ◽  
Bulking Rate
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