Hausmann, J., Steinel, H., Kreck, M., Werban, U., Vienken, T., Dietrich, P., 2013. Two-dimensional geomorphological characterization of a filled abandoned meander using geophysical methods and soil sampling. Geomorphology, 201(2013), 335-343., 2013
Using geophysical methods for the geomorphological characterization of subsurface features has nu... more Using geophysical methods for the geomorphological characterization of subsurface features has numerous advantages over traditional exploration methods, because of their noninvasive and rapid nature. In this study, we compared the results of four geophysical methods with each other. We also discuss their possibilities and limitations in a geomorphological investigation. 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. 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. Core samples obtained from sonic drilling were used to validate the findings of both seismic methods. However, we found that electrical resistivity tomography and ground penetrating radar lacked penetration depth and could only be used to resolve shallower subsurface layers. The ERT, GPR, RS, and MASW can be used to gather images of subsurface structures. The MASW in particular provides supplementary information about the channel's internal structure (with respect to lateral and vertical resolution). Besides fluvial–morphological features, we also detected inverse velocity structures within the channel. This allowed us to characterize the abandoned meander using information about its layer distribution and material composition. However, we were only able to characterize and delineate the subsurface features of the abandoned meander by combining all of the aforementioned methods.
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Papers by Jörg Hausmann
stone and gravel in six different quarries by optimizing the blasting technology. In addition to an improved energy-effective production of the muck pile two correlations of blast parameters were found. Both correlate the strain with the peak particle velocity: the first involves a “momentum-distance” relation and the second involves an “energy-distance” relation. These relations suggest that the vibrations are
controllable by adjusting the type of explosives, charge weights, borehole lengths, and borehole diameter. The simultaneous ignition of multiple charges according to the momentum theory does not increase the vibrations compared to consecutive ignition of smaller charges. This fact makes large blasting systems possible. The vibration relations have to be determined individually for each quarry site. The zone of permanent deformation is defined on the basis of strain measurements at distances close to the blasting. Remarkably, damage in the form of crack formation does not occur in constructions outside of this zone, and this is independent of the construction type. This is also valid for multiple blast impacts.
thorough understanding of (hydro-) geological subsurface conditions. This is especially true for sedimentary deposits with complex architecture, where lithology and/or hydraulic properties can significantly vary over short horizontal and vertical distances. At these sites, a traditional, solely sample-based investigation approach is often not applicable
due to limited data accuracy, resolution, and efficiency. Instead, an adapted investigation approach is required that combines exploration technologies of different resolution and investigation scales. This paper aims to demonstrate the feasibility of such a multi-scale approach for the characterization of a test site near the city of Löbnitz, Germany,
that is comprised of heterogeneous alluvial deposits. Our focus is on site characterization in terms of lithology and hydraulic properties, as well as on the delineation and characterization of an aggradated oxbow as a typical example of a small scale geological structure.
of a two-dimensional subsurface. Moreover, the occurence of lateral inhomogeneities and dipping layers distort the flat-layered 1D assumption used in surface wave inversion. In this study, we present data from two different MASW surveys. For both locations, we reveal shot-geometrical effects and prove the necessity of bidirectional profiling, especially since these check shots can be implemented with only little extra effort. The results of this investigation show that, in general, more attention should be paid to data evaluation.
Books by Jörg Hausmann
The Kulkwitzer See (lake Kulkwitz), situated nearby the city of Leipzig in Central Germany, will be classified and assessed by the European Water Framework Directive 2000/60/EU (WFD) (EU 2001). According to its similarity as to the chosen reference lake, it represents the ideal of anthropogenic water bodies in the “New Central German
Lake District“ (JUNGE et al. 2005, JUNGE et al. 2006, FRUHNER 2005, SCHNEIDER 2005, CZEGKA et al. 2006a, CZEGKA et al. 2006b, KUCHENBUCH 2006). Its ecologic
potential could be described as to WFD with the status "good or better”. The assessment is based on long term datasets, which are continued by new measurements.
Through the fact that the Kulkwitzer See is the oldest open mine pite lake from lignite mining in the surrounding of the investigation area, it offers a detailed understanding in
the post mining water development. It has reference character because of the age of 30 years and its trophic state index, which can be assessed as very good. The dissertation describes the historic development, the geology, the morphology, the surface and subterranean drainage area, the physico-chemical attributes as well as the limnic flora and fauna of the lake.
modular borehole geophone chain suitable for operation in shallow and slim near surface boreholes. These technical developments are accompanied by progress in geophysical model generation, i.e., fully non-linear inversion strategies suitable for routine application and model uncertainty appraisal. We link S-wave and P-wave tomographic models to geotechnical target parameters and evaluate recent develop-
ments made for high resolution ground-truthing using direct push technology for geotechnical and stratigraphic analyses. To be able to provide improved regional scale seismic properties we advanced the Rayleigh wave based imaging of S-wave velocity variations using diffusivewavefield theory for modeling the full microtremor H/V spectral ratio for receivers at the surface and in depth.
full citation: Paasche, H., Rumpf, M., Lontsi, A., Hausmann, J., Hannemann, K., Fechner, T., Ohrnberger, M., Werban, U., Tronicke, J., Krüger, F., Dietrich, P., 2014. MuSaWa: Multi-Scale S-wave Tomography for Exploration and Risk Assessment of Development Sites. In: M. Weber, U. Münch (Eds.), Tomography of the Earth’s Crust: From Geophysical Sounding to Real-Time Monitoring. Advanced Technologies in Earth Sciences. Springer Int. Pub. 95-114.
Talks by Jörg Hausmann
stone and gravel in six different quarries by optimizing the blasting technology. In addition to an improved energy-effective production of the muck pile two correlations of blast parameters were found. Both correlate the strain with the peak particle velocity: the first involves a “momentum-distance” relation and the second involves an “energy-distance” relation. These relations suggest that the vibrations are
controllable by adjusting the type of explosives, charge weights, borehole lengths, and borehole diameter. The simultaneous ignition of multiple charges according to the momentum theory does not increase the vibrations compared to consecutive ignition of smaller charges. This fact makes large blasting systems possible. The vibration relations have to be determined individually for each quarry site. The zone of permanent deformation is defined on the basis of strain measurements at distances close to the blasting. Remarkably, damage in the form of crack formation does not occur in constructions outside of this zone, and this is independent of the construction type. This is also valid for multiple blast impacts.
thorough understanding of (hydro-) geological subsurface conditions. This is especially true for sedimentary deposits with complex architecture, where lithology and/or hydraulic properties can significantly vary over short horizontal and vertical distances. At these sites, a traditional, solely sample-based investigation approach is often not applicable
due to limited data accuracy, resolution, and efficiency. Instead, an adapted investigation approach is required that combines exploration technologies of different resolution and investigation scales. This paper aims to demonstrate the feasibility of such a multi-scale approach for the characterization of a test site near the city of Löbnitz, Germany,
that is comprised of heterogeneous alluvial deposits. Our focus is on site characterization in terms of lithology and hydraulic properties, as well as on the delineation and characterization of an aggradated oxbow as a typical example of a small scale geological structure.
of a two-dimensional subsurface. Moreover, the occurence of lateral inhomogeneities and dipping layers distort the flat-layered 1D assumption used in surface wave inversion. In this study, we present data from two different MASW surveys. For both locations, we reveal shot-geometrical effects and prove the necessity of bidirectional profiling, especially since these check shots can be implemented with only little extra effort. The results of this investigation show that, in general, more attention should be paid to data evaluation.
The Kulkwitzer See (lake Kulkwitz), situated nearby the city of Leipzig in Central Germany, will be classified and assessed by the European Water Framework Directive 2000/60/EU (WFD) (EU 2001). According to its similarity as to the chosen reference lake, it represents the ideal of anthropogenic water bodies in the “New Central German
Lake District“ (JUNGE et al. 2005, JUNGE et al. 2006, FRUHNER 2005, SCHNEIDER 2005, CZEGKA et al. 2006a, CZEGKA et al. 2006b, KUCHENBUCH 2006). Its ecologic
potential could be described as to WFD with the status "good or better”. The assessment is based on long term datasets, which are continued by new measurements.
Through the fact that the Kulkwitzer See is the oldest open mine pite lake from lignite mining in the surrounding of the investigation area, it offers a detailed understanding in
the post mining water development. It has reference character because of the age of 30 years and its trophic state index, which can be assessed as very good. The dissertation describes the historic development, the geology, the morphology, the surface and subterranean drainage area, the physico-chemical attributes as well as the limnic flora and fauna of the lake.
modular borehole geophone chain suitable for operation in shallow and slim near surface boreholes. These technical developments are accompanied by progress in geophysical model generation, i.e., fully non-linear inversion strategies suitable for routine application and model uncertainty appraisal. We link S-wave and P-wave tomographic models to geotechnical target parameters and evaluate recent develop-
ments made for high resolution ground-truthing using direct push technology for geotechnical and stratigraphic analyses. To be able to provide improved regional scale seismic properties we advanced the Rayleigh wave based imaging of S-wave velocity variations using diffusivewavefield theory for modeling the full microtremor H/V spectral ratio for receivers at the surface and in depth.
full citation: Paasche, H., Rumpf, M., Lontsi, A., Hausmann, J., Hannemann, K., Fechner, T., Ohrnberger, M., Werban, U., Tronicke, J., Krüger, F., Dietrich, P., 2014. MuSaWa: Multi-Scale S-wave Tomography for Exploration and Risk Assessment of Development Sites. In: M. Weber, U. Münch (Eds.), Tomography of the Earth’s Crust: From Geophysical Sounding to Real-Time Monitoring. Advanced Technologies in Earth Sciences. Springer Int. Pub. 95-114.