TY - JOUR A1 - Domsch, Horst A1 - Lück, Erika A1 - Eisenreich, Manfred T1 - Bestimmung der elektrischen Leitfähigkeit des Bodens mit dem Meßgerät EM 38 von Geonics zur Kennzeichnung der Verteilung sich unterscheidender Bodenprofile = Determination of the electrical soil bulk conductivity with the Geonics EM 38 for the identification of the soil types distribution Y1 - 1999 ER - TY - JOUR A1 - Lück, Erika T1 - Erkundungen eines archäologischen Grabenwerkes mittels Georadar Y1 - 2000 ER - TY - JOUR A1 - Lück, Erika A1 - Eisenreich, Manfred T1 - Kartierung der elektrischen Leitfähigkeit zur Erfassung räumlicher Variationen von Bodenparametern Y1 - 1999 ER - TY - JOUR A1 - Lück, Erika A1 - Eisenreich, Manfred A1 - Domsch, Horst T1 - Einführung geophysikalischer Meßverfahren zur Ermittlung von Bodenkennwerten für die teilflächenspezifische Bewirtschaftung in der KSG Agrargesellschaft mbH Kassow Y1 - 2000 ER - TY - JOUR A1 - Domsch, Horst A1 - Ehlert, D. A1 - Lück, Erika A1 - Eisenreich, Manfred T1 - Use of the electrical conductivity to reduce the effort of precision farming Y1 - 2000 ER - TY - BOOK A1 - Lück, Erika A1 - Eisenreich, Manfred A1 - Domsch, Horst ED - Blumenstein, Oswald T1 - Innovative Kartiermethoden für die teilflächenspezifische Landwirtschaft : innovative Methods for Precision Agriculture T3 - Stoffdynamik in Geosystemen Y1 - 2002 SN - 0949-4731 VL - 7 PB - Selbstverl. der Arbeitsgruppe Stoffdynamik in Geosystemen CY - Potsdam ER - TY - JOUR A1 - Lück, Erika T1 - Geophysikalische Prospektionsmethoden für die Archäologie Y1 - 2000 SN - 3-931836-16-9 ER - TY - JOUR A1 - Lück, Erika A1 - Meyer, M. T1 - Geophysical preparation of an archaeological excavation in the highlands (Mardorf, Hessen) Y1 - 1999 ER - TY - JOUR A1 - Lück, Erika A1 - Eisenreich, Manfred A1 - Spangenberg, Ute A1 - Schütte, Marc T1 - Automatisierung der Leckageerkennung an Deponieoberflächenabdichtungen Y1 - 2000 ER - TY - JOUR A1 - Lück, Erika A1 - Eisenreich, Manfred A1 - Blumenstein, Oswald A1 - Domsch, Horst T1 - Geophysikalische Untersuchungen zur Erfassung räumlicher und zeitlicher Variationen von Bodenstrukturen Y1 - 1998 ER - TY - JOUR A1 - Domsch, Horst A1 - Lück, Erika A1 - Eisenreich, Manfred T1 - Description o a soil structure by means of the penetration resistance and the electrical conductivity Y1 - 1998 ER - TY - JOUR A1 - Lück, Erika A1 - Eisenreich, Manfred T1 - Die elektrische Leitfähigkeit als eine Steuergröße für die teilflächenspezifische Landwirtschaft Y1 - 1998 ER - TY - JOUR A1 - Lück, Erika T1 - Deep crustal structure of the Northeast German Basin : new DEKORP-BASIN ï96 deep-profiling results Y1 - 1999 SN - 0091-7613 ER - TY - JOUR A1 - Lück, Erika A1 - Eisenreich, Manfred T1 - Geophysikalische Meßverfahren zur Ermittlung von Bodenkennwerten für die teilflächenspezifische Bewirtschaftung Y1 - 1999 ER - TY - JOUR A1 - Lück, Erika A1 - Eisenreich, Manfred A1 - Wetzel, G. T1 - Geophysikalische Untersuchungen zur Erkundung der Kreisgrabenanlage bei Dyrotz (Brandenburg) Y1 - 1998 ER - TY - JOUR A1 - Lück, Erika A1 - Eisenreich, Manfred T1 - Geophysical prospections of archaeological sites in Brandenburg Y1 - 1998 ER - TY - JOUR A1 - Lück, Erika A1 - Eisenreich, Manfred T1 - Geophysical prospection of archaeological sites in Brandenburg Y1 - 1999 ER - TY - JOUR A1 - Lück, Erika A1 - Rühlmann, Jörg T1 - Resistivity mapping with GEOPHILUS ELECTRICUS - Information about lateral and vertical soil heterogeneity JF - Geoderma : an international journal of soil science N2 - GEOPHILUS ELECTRICUS (nickname GEOPHILUS) is a novel system for mapping the complex electrical bulk resistivity of soils. Rolling electrodes simultaneously measure amplitude and phase data at frequencies ranging from 1 mHz to 1 kHz. The sensor's design and technical specifications allow for measuring these parameters at five depths of up to ca. 1.5 m. Data inversion techniques can be employed to determine resistivity models instead of apparent values and to image soil layers and their geometry with depth. When used in combination with a global positioning system (GPS) and a suitable cross-country vehicle, it is possible to map about 100 ha/day (assuming 1 data point is recorded per second and the line spacing is 18 m). The applicability of the GEOPHILUS system has been demonstrated on several sites, where soils show variations in texture, stratification, and thus electrical characteristics. The data quality has been studied by comparison with 'static' electrodes, by repeated measurements, and by comparison with other mobile conductivity mapping devices (VERIS3100 and EM38). The high quality of the conductivity data produced by the GEOPHILUS system is evident and demonstrated by the overall consistency of the individual maps, and in the clear stratification also confirmed by independent data. The GEOPHILUS system measures complex values of electrical resistivity in terms of amplitude and phase. Whereas electrical conductivity data (amplitude) are well established in soil science, the interpretation of phase data is a topic of current research. Whether phase data are able to provide additional information depends on the site-specific settings. Here, we present examples, where phase data provide complementary information on man-made structures such as metal pipes and soil compaction. KW - Proximal soil sensing KW - Electrical conductivity KW - Electrical resistivity KW - Phase angle KW - Mapping KW - Soil stratification Y1 - 2013 U6 - https://doi.org/10.1016/j.geoderma.2012.11.009 SN - 0016-7061 VL - 199 SP - 2 EP - 11 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Stiller, M. A1 - Lück, Erika A1 - Krawczyk, C. M. T1 - DEKORPïs deep-seismic Transect BASINï96 throught the north german basin : field work and data processing Y1 - 1997 ER - TY - JOUR A1 - Walter, J. A1 - Lück, Erika A1 - Heller, C. A1 - Bauriegel, Albrecht A1 - Zeitz, Jutta T1 - Relationship between electrical conductivity and water content of peat and gyttja BT - implications for electrical surveys of drained peatlands JF - Near surface geophysics N2 - The application of electrical resistivity tomography to peatlands supports conventional coring by providing data on the current condition of peatlands, including data on stratigraphy, peat properties and thickness of organic deposits. Data on the current condition of drained peatlands are particularly required to improve estimates of carbon storage as well as losses and emissions from agriculturally used peatlands. However, most of the studies focusing on electrical resistivity tomography surveys have been conducted on natural peatlands with higher groundwater levels. Peatlands drained for agriculture have not often been studied using geophysical techniques. Drained sites are characterized by low groundwater levels and high groundwater fluctuations during the year, which lead to varying levels of water saturation. To validate better electrical resistivity tomography surveys of drained peatlands, the aim of this laboratory study is to investigate the influence of varying water saturation levels on electrical conductivity (reciprocal of resistivity) for a variety of peat and gyttja types, as well as for different degrees of peat decomposition. Results show that different levels of water saturation strongly influence bulk electrical conductivity. Distinct differences in this relationship exist between peat and gyttja substrates and between different degrees of peat decomposition. Peat shows an exponential relationship for all degrees of decomposition, whereas gyttja, in particular organic-rich gyttja, is characterized by a rather unimodal relationship. The slopes for the relationship between electrical conductivity and water content are steeper at high degrees of decomposition than for peat of low degrees of decomposition. These results have direct implications for field electrical resistivity tomography surveys. In drained peatlands that are strongly susceptible to drying, electrical resistivity tomography surveys have a high potential to monitor the actual field water content. In addition, at comparable water saturations, high or low degrees of decomposition can be inferred from electrical conductivity. KW - Electrical conductivity KW - Peat KW - Gyttja Y1 - 2019 U6 - https://doi.org/10.1002/nsg.12030 SN - 1569-4445 SN - 1873-0604 VL - 17 IS - 2 SP - 169 EP - 179 PB - Wiley CY - Hoboken ER -