Geologie: Recent submissions
Anzeige der Dokumente 151-175 von 933
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Hans Peter Cornelius (1888–1950): a perfect mapping geologist and scientific explorer of the Alps
; (International Journal of Earth Sciences, 2020-07-06)
Hans Peter Cornelius was a squeamishly and accurately mapping field geologist with an eye for the finest detail as well as for the large-scale architectural structure of mountain ranges. His excellent work concerned the ... -
Slab break-offs in the Alpine subduction zone
; ; ; ; ; (International Journal of Earth Sciences, 2020-01-30)
After the onset of plate collision in the Alps, at 32–34 Ma, the deep structure of the orogen is inferred to have changed dramatically: European plate break-offs in various places of the Alpine arc, as well as a possible ... -
Paleo‐denudation rates suggest variations in runoff drove aggradation during last glacial cycle, Crete, Greece
; ; ; ; ; ; ; ; (Earth Surface Processes and Landforms, 2022-11-13)
Fluvial aggradation and incision are often linked to Quaternary climate cycles, but it usually remains unclear whether variations in runoff or sediment supply or both drive channel response to climate variability. Here we ... -
Experimental Investigation on Static and Dynamic Bulk Moduli of Dry and Fluid-Saturated Porous Sandstones
; ; ; ; (Rock Mechanics and Rock Engineering, 2020-09-29)
Knowledge of pressure-dependent static and dynamic moduli of porous reservoir rocks is of key importance for evaluating geological setting of a reservoir in geo-energy applications. We examined experimentally the evolution ... -
Geological development of the Limpopo Shelf (southern Mozambique) during the last sealevel cycle
; ; (Geo-Marine Letters, 2020-03-26)
Paleo-shorelines on continental shelves give insights into the complex development of coastlines during sealevel cycles. This study investigates the geologic development of the Limpopo Shelf during the last sealevel cycle ... -
Comparative application and optimization of different single-borehole dilution test techniques
; ; (Hydrogeology Journal, 2020-12-05)
Single-borehole dilution tests (SBDTs) are a method for characterizing groundwater monitoring wells and boreholes, and are based on the injection of a tracer into the saturated zone and the observation of concentration ... -
Predisposing and triggering factors of large-scale landslides in Debre Sina area, central Ethiopian highlands
; ; ; (Bulletin of Engineering Geology and the Environment, 2020-08-16)
A large number of landslide events have repeatedly struck the border zone of the northwestern plateaus of Ethiopia. Debre Sina area is one of the most tectonically active areas located along the western margin of the Afar ... -
Integrating field work and large-scale modeling to improve assessment of karst water resources
(Hydrogeology Journal, 2020-10-31)Comprehensive management of karst water resources requires sufficient understanding of their dynamics and karst-specific modeling tools. However, the limited availability of observations of karstic groundwater dynamics has ... -
Future-proofing hydrogeology by revising groundwater monitoring practice
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Groundwater is an important global resource and its sustainable use faces major challenges. New methods and advances in computational science could lead to much improved understanding of groundwater processes and subsurface ... -
A model ensemble generator to explore structural uncertainty in karst systems with unmapped conduits
; ; ; ; (Hydrogeology Journal, 2020-10-02)
Karst aquifers are characterized by high-conductivity conduits embedded in a low-conductivity fractured matrix, resulting in extreme heterogeneity and variable groundwater flow behavior. The conduit network controls ... -
Structural controls on the hydrogeological functioning of a floodplain
;; ; ; (Hydrogeology Journal, 2020-08-22)
Floodplains are often conceptualized as homogeneous sediment bodies which connect streams with their respective catchment and buffer agricultural inputs. This has led to a general bias within the hydrological community ... -
Combining implicit geological modeling, field surveys, and hydrogeological modeling to describe groundwater flow in a karst aquifer
;; (Hydrogeology Journal, 2020-09-15)
Abstract In three-dimensional (3-D) implicit geological modeling, the bounding surfaces between geological units are automatically constructed from lithological contact data (position and orientation) and the ... -
Assessment of the heterogeneity of hydraulic properties in gravelly outwash plains: a regionally scaled sedimentological analysis in the Munich gravel plain, Germany
; ; (Hydrogeology Journal, 2020-08-11)
The favorable overall conditions for the utilization of groundwater in fluvioglacial aquifers are impacted by significant heterogeneity in the hydraulic conductivity, which is related to small-scale facies changes. Knowledge ... -
Hydrochemical evaluation of water resources and human impacts on an urban karst system, Jordan
; ; ; ; (Hydrogeology Journal, 2020-06-05)
Urban karst aquifers are threatened by anthropogenic activities, especially in semiarid developing countries. Recent water-sampling campaigns assessed the extent of groundwater-quality impairment in the Wadi Shueib in ... -
Ensemble-based stochastic permeability and flow simulation of a sparsely sampled hard-rock aquifer supported by high performance computing
(Hydrogeology Journal, 2020-05-07)Calibrating the heterogeneous permeability distribution of hard-rock aquifers based on sparse data is challenging but crucial for obtaining meaningful groundwater flow models. This study demonstrates the applicability of ... -
Automated digital data acquisition for landslide inventories
(Landslides, 2020-06-11)Landslide research relies on landslide inventories for a multitude of spatial, temporal, or process analyses. Generally, it takes high effort to populate a landslide inventory with relevant data. In this context, the present ... -
How robust are landslide susceptibility estimates?
;; ; ; ; (Landslides, 2020-08-24)
Much of contemporary landslide research is concerned with predicting and mapping susceptibility to slope failure. Many studies rely on generalised linear models with environmental predictors that are trained with data ... -
Cyclostratigraphy and paleoenvironmental inference from downhole logging of sediments in tropical Lake Towuti, Indonesia
; ; ; ; ; ; (Journal of Paleolimnology, 2021-02-12)
Lake Towuti is located on central Sulawesi/Indonesia, within the Indo Pacific Warm Pool, a globally important region for atmospheric heat and moisture budgets. In 2015 the Towuti Drilling Project recovered more than 1000 m ... -
Early Eocene magnetostratigraphy and tectonic evolution of the Xining Basin, NE Tibet
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The Cenozoic strata of the Xining Basin, NE Tibet, have provided crucial records for understanding the tectonic and palaeo‐environmental evolution of the region. Yet, the age of the lower part of the sedimentary stratigraphy ... -
Multiphase-field modelling of crack propagation in geological materials and porous media with Drucker-Prager plasticity
; ; ; ; ; ; (Computational Geosciences, 2020-10-22)
A multiphase-field approach for elasto-plastic and anisotropic brittle crack propagation in geological systems consisting of different regions of brittle and ductile materials is presented and employed to computationally ... -
Zur Land- und Bodendegradation – ein Rück- und Ausblick deutschland- und weltweit
(2023)Soils and landscapes are bridges of space and time, as they simultaneously and authentically show essential aspects that were previously separated by time and space (such as cultural and activity-related aspects from past ... -
Middle and Late Devonian paleogeography of the eastern Anti-Atlas (Morocco)
(International Journal of Earth Sciences, 2021-04-17)
The eastern Anti-Atlas of Morocco represents one of the most completely exposed and perfectly documented biostratigraphic records of the entire Devonian worldwide. Paleogeographically it is clearly differentiated into ... -
Revisiting afro-alpine Lake Garba Guracha in the Bale Mountains of Ethiopia: rationale, chronology, geochemistry, and paleoenvironmental implications
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; (Journal of Paleolimnology, 2020-06-30)
Previous paleolimnological studies demonstrated that the sediments of Garba Guracha, situated at 3950 m asl in the afro-alpine zone of the Bale Mountains of Ethiopia, provide a complete Late Glacial and Holocene paleoclimate ... -
Strain-dependent slope stability
(Acta Geotechnica, 2020-05-09)The state of equilibrium of a slope is usually interpreted and expressed by safety factors based on calculations with limit equilibrium methods. Different stress states, failure modes and hydraulic conditions in sections ... -
An automated testing device for continuous measurement of the hysteretic water retention curve of granular media
(Acta Geotechnica, 2020-02-11)
The water retention curve (WRC), representing an important key for the modelling of hydro-mechanical behaviour of unsaturated soils, is still not fully understood, because it originates from microscopic hydraulic and ...
