Ground penetrating radar images of selected fluvial deposits in the Netherlands

Vandenberghe, Jef; Overmeeren, R.A. van

doi:10.1016/s0037-0738(99)00072-x

Cited by 100 publications

(108 citation statements)

References 18 publications

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“…Such types of GPR reflections were also presented and interpreted in a similar way by, for example, Vandenberghe and van Overmeeren (1999) and Gourry et al (2003). Thus, traces of two river channels were distinguished in sections 21, 8, 11 and 27 and three and four channels in sections 14 and 17, respectively (Figs.…”

Section: Discussionmentioning

confidence: 73%

“…The dipping GPR reflections mark layering pattern within sands (Słowik 2012). Such sedimentary structures were also shown by, for example, Vandenberghe and van Overmeeren (1999) and Kostic and Aigner (2007). They represent lateral accretion elements indicating development of point bars and lateral migration of a river channel (Kostic and Aigner 2007).…”

Section: Discussionmentioning

confidence: 87%

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Transformation of a lowland river from a meandering and multi-channel pattern into an artificial canal: retracing a path of river channel changes (the Middle Obra River, W Poland)

Słowik

2013

Reg Environ Change

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At the beginning of the nineteenth century, a significant change in sedimentation took place along the middle course of the Obra River (W Poland): a ''natural'' channel bed was replaced by three artificial canals. Before that time the Obra River bed had been characterized by various river patterns (braided, meandering and disappearing in wetlands). GPR (ground-penetrating radar) surveys and the analysis of satellite and aerial images were carried out to retrace the natural river course near the village of Kopanica. The GPR, ground-truthed with core data, revealed that at least two types of the river pattern had been functioning here before the period of the hydrotechnical works: a large-scale meandering pattern (width-to-depth (w/d) ratio ranging from 15 to 40) and a relatively smallerscale multi-channel pattern (w/d = 11-22). Possibly, the transformation was caused by forming a series of large floods followed by in-channel aggradation and avulsions.

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Section: Discussionmentioning

confidence: 73%

Section: Discussionmentioning

confidence: 87%

Transformation of a lowland river from a meandering and multi-channel pattern into an artificial canal: retracing a path of river channel changes (the Middle Obra River, W Poland)

Słowik

2013

Reg Environ Change

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“…Subtract-mean (dewow) was applied to eliminate high frequency noise. Sedimentary structures commonly produce low amplitude reflections (Vandenbenghe and van Overmeeren 1999). AGC (Automatic Gain Control) gain and manual gain (y) tools allowed enhancing the low amplitude signals illustrating deposit's interfaces and structures.…”

Section: Ground Penetrating Radarmentioning

confidence: 99%

“…Ground penetrating radar (GPR) measurements are a very useful tool in such studies as they allow imaging the fragments of river beds and alluvial structures preserved in the shallow subsurface. The GPR method was applied in many studies concerning reconstruction of meandering (Leclerc and Hickin 1997;Vandenbenghe and van Overmeeren 1999;Huisink 2000;Gourry et al 2003;Bersezio et al 2007;Bowling et al 2007;Kostic and Aigner 2007), braided (Bristow et al 1999;Skelly et al 2003;Lunt et al 2004;Froese et al 2005;Best et al 2006;Bowling et al 2007), wandering (Rice et al 2009;Hickin et al 2009) and transitional patterns ( Vandenbenghe and van Overmeeren 1999;Bowling et al 2007) in case of both sand and gravel bed river courses. Furthermore, a number of research works referred to the application of the GPR method to study the sediments' structures in wetlands, mires, and bogs.…”

Section: Introductionmentioning

confidence: 99%

GPR and aerial imageries to identify the recent historical course of the Obra River and spatial extent of Obrzańskie Lake, altered by hydro-technical works

Słowik

2013

Environ Earth Sci

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Ground penetrating radar (GPR) measurements have been conducted to retrace the natural course of the Obra River and changes of spatial extent of Obrzańskie Lake (western Poland). The Obra River valley was subjected to intensive anthropogenic transformation. Three artificial canals were constructed here in the beginning of the nineteenth century. The GPR surveys were done using a georadar MALA ProEx equipped with 250 MHz antenna. The measurement was verified by coring and analyses of historical maps, aerial photographs, and satellite images. The research has shown that there are at least three elongated depressions preserved in the modern land surface near the village of Solec, situated in the middle course of the valley. Several structures suggesting functioning of a multi-channel pattern in the past have been detected inside and in the vicinity of the depressions. Filling the channels with silts and peats might have been the effect of flow deceleration caused by the construction of the Obra Canals. Moreover, situation of two of the retraced depressions suggests that the landforms might be the remains of a river bed disappearing in wetlands. Further studies including groundwater flux measurements in the area between the depressions are needed to confirm such hypothesis. Furthermore, the study allowed retracing the spatial extent of Obrzańskie Lake. The sediment structures detected by the GPR measurements and calibrated with coring were interpreted to be the traces of the lake shoreline. The interpretation was supported by the findings inferred from aerial and satellite images. It was shown that Obrzańskie Lake had had at least three islands and had been directly connected with a network of braided channels before the anthropogenic intervention. The spatial extent of the lake was significantly altered by the construction of the North Obra Canal. Disconnecting the lake from the Canal resulted in more than 50 % decrease of the lake surface.

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“…Whether for applications aiming to delineate subsurface structures or aiming to estimate hydro-use of GPR to recognize characteristic radar facies and to correlate them with specific depositional environments [Vandenberghe and van Overmeeren, 1999]. Vandenberghe and van Overmeeren [1999] systematically investigated the use of GPR for the identification of various types of sedimentary structures. GPR surveys performed near, and in some cases only a few meters away from, cliff faces (outcrops) allowed for a comparison of cliff face photographs and GPR sections.…”

Section: Introductionmentioning

confidence: 99%

Forward modeling of ground‐penetrating radar data using digitized outcrop images and multiple scenarios of water saturation

Kowalsky¹,

Dietrich²,

Teutsch³

et al. 2001

Water Resources Research

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Ground penetrating radar images of selected fluvial deposits in the Netherlands

Cited by 100 publications

References 18 publications

Transformation of a lowland river from a meandering and multi-channel pattern into an artificial canal: retracing a path of river channel changes (the Middle Obra River, W Poland)

Transformation of a lowland river from a meandering and multi-channel pattern into an artificial canal: retracing a path of river channel changes (the Middle Obra River, W Poland)

GPR and aerial imageries to identify the recent historical course of the Obra River and spatial extent of Obrzańskie Lake, altered by hydro-technical works

Forward modeling of ground‐penetrating radar data using digitized outcrop images and multiple scenarios of water saturation

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