![]() ![]() This paper presents an application of surface wave methods to the characterization of a small-scale mountain catchment. However, we were only able to characterize and delineate the subsurface features of the abandoned meander by combining all of the aforementioned methods. ![]() This allowed us to characterize the abandoned meander using information about its layer distribution and material composition. Besides fluvial–morphological features, we also detected inverse velocity structures within the channel. The MASW in particular provides supplementary information about the channel's internal structure (with respect to lateral and vertical resolution). The ERT, GPR, RS, and MASW can be used to gather images of subsurface structures. However, we found that electrical resistivity tomography and ground penetrating radar lacked penetration depth and could only be used to resolve shallower subsurface layers. Core samples obtained from sonic drilling were used to validate the findings of both seismic methods. By combining these methods, we were able to characterize and delineate subsurface features of the abandoned meander, including a point bar, a channel, and a cutbank. Electrical resistivity tomography (ERT), refraction seismic (RS), ground penetrating radar (GPR), and multichannel analysis of surface waves (MASW) methods were applied at an abandoned meander in northern Saxony to map a predefined structure. We also discuss their possibilities and limitations in a geomorphological investigation. In this study, we compared the results of four geophysical methods with each other. Floodplain forests dynamics of Eastern Coastal Plain river systems are ideal indicator sites for monitor ing and predicting ecosystem responses to natural and human-induced changes.Using geophysical methods for the geomorphological characterization of subsurface features has numerous advantages over traditional exploration methods, because of their noninvasive and rapid nature. Particularly on account of current dam-related flow alterations. distichum had not been previously documented, and its recovery within the floodplain is a major management concern The extent and intensity of logging impacts to T. Tolerances controlled recruitment of the second-growth forests producing diverse structural and compositional patterns. Landscape scale variability in hydrogeomorphic conditions and species biological Selective logging for Taxodium distichum (bald cypress) and clear cut logging created abrupt changes to community composition, whereby the recovering forests did not return to pre-disturbance assemblages. Un-logged old-growth forests were the most diverse, and differences in the canopy and understory demonstrated a long term process of species turnover indicative of changing hydrogeomorphic conditions from more hydric to less hydric as the abandoned channel continues to infill. Annual duration and frequency of hydrologic connectiv ity to flood waters, topographic complexity, and logging history explained the greatest variabilityīetween sites. The methods used for this study combine field-based vegetation (structure and composition) surveys with high-resolution digital terrain models,Īnd 2D hydrodynamic modeling, soils data, and logging histories to explain spatial variability in forest patterns and hydrogeomorphic conditions. Of vegetation dynamics, logging history, and hydrogeomorphic controls on abandoned meander forests in the Congaree River floodplain, South Carolina. This study examines the spatial variability Their compositional diversity, ecological function, and persistence are highly variable in space and time. Abandoned meanders are former river meanders cut-off from the active channel that occur in the floodplain in various stages of infilling. ![]()
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