Browsing Geologie by Issue Date
Now showing items 1-20 of 639
-
Role of the Tropical Atlantic for the Interhemispheric Heat Transport During the Last Deglaciation
; ; ; ; ; (Paleoceanography and Paleoclimatology, 2021-05-22)
During the last deglaciation abrupt millennial‐scale perturbations of the Atlantic Meridional Overturning Circulation massively altered the interhemispheric heat distribution affecting, for example, continental ice volume ... -
Subsurface Moisture Regulates Himalayan Groundwater Storage and Discharge
; ; Sens‐Schönfelder, C.; ; Baidya, K. P.; ; (AGU Advances, 2021-05-18)
Through the release of groundwater, most mountain rivers run year‐round despite their small catchments and sporadic precipitation. This makes mountain ranges important sources of reliable freshwater for downstream populations ... -
Capillary, Film, and Vapor Flow in Transient Bare Soil Evaporation (1): Identifiability Analysis of Hydraulic Conductivity in the Medium to Dry Moisture Range
; ; ; (Water Resources Research, 2021-05-13)
Evaporation experiments are frequently used to determine soil hydraulic properties. We simulated laboratory evaporation experiments with a coupled water, vapor, and heat flow model which includes the surface energy balance. ... -
Capillary, Film, and Vapor Flow in Transient Bare Soil Evaporation (2): Experimental Identification of Hydraulic Conductivity in the Medium to Dry Moisture Range
; ; (Water Resources Research, 2021-05-13)
Bare‐soil evaporation involves coupled flow of liquid water, water vapor, and heat. As evaporation results in non‐isothermal conditions in the soil, the temperature dependence of transport properties and thermal fluxes of ... -
Upscaling Sediment‐Flux‐Dependent Fluvial Bedrock Incision to Long Timescales
(Journal of Geophysical Research: Earth Surface, 2021-05-12)
Fluvial bedrock incision is driven by the impact of moving bedload particles. Mechanistic, sediment‐flux‐dependent incision models have been proposed, but the stream power incision model (SPIM) is frequently used to model ... -
The supercritical question for pyroclastic dune bedforms: An overview
(Sedimentology, 2021-05-07)
Sedimentary structures deposited from dilute pyroclastic currents are largely dominated by the products of metre‐scale dune bedforms containing backset lamination. Since the first seminal works in the 1970s, the vast ... -
Mega‐scale glacial lineations formed by ice shelf grounding in the Canadian Beaufort Sea during multiple glaciations
; Dallimore, Scott; Wamsteeker, Michael; Taylor, Gary; King, Edward L.; Rohr, Kristin M. M.; Hong, Jong Kuk; Jin, Young Keun (Earth Surface Processes and Landforms, 2021-05-05)
Mega‐scale glacial lineations formed by the raking of ice shelves across the seafloor have been reported from multiple polar regions. Here, we present the first evidence of continental slope situated buried lineations in ... -
Sedimentology of a Late Quaternary lacustrine record from the south‐eastern Carpathian Basin
; Hambach, Ulrich; Klasen, Nicole; ; ; ; ; Obreht, Igor; ; Papadopoulou, Maria; ; Schäbitz, Frank; Gavrilov, Milivoj B.; MarkoviĆ, Slobodan B.; Vött, Andreas; (Journal of Quaternary Science, 2021-05-04)
The Upper Pleistocene geoarchives in the south‐eastern Carpathian Basin are represented predominantly by loess–palaeosol records. In 2015, a 10 m sediment core composed of clay‐rich lacustrine sediments was recovered by ... -
Syn‐ and post‐eruptive gully formation near the Laacher See volcano
; Dotterweich, Markus; Fülling, Alexander; ; Broisch‐Höhner, Manuela; Totschnig, Ralf; Seren, Sirri; (Earth Surface Processes and Landforms, 2021-05-04)
The Laacher See volcano (LSV) is located at the western margin of the Neuwied Basin, the central part of the Middle Rhine Basin of Germany. Its paroxysmal Plinian eruption c. 13 ka ago (Laacher See event; LSE) deposited a ... -
Geodynamic Modeling of Lithospheric Removal and Surface Deformation: Application to Intraplate Uplift in Central Mongolia
; Stein, Claudia; Becken, Michael; Hansen, Ulrich (Journal of Geophysical Research: Solid Earth, 2021-05-03)
Intraplate surface deformation is enigmatic and the underlying mechanisms responsible are not fully understood. We use thermo‐mechanical numerical modeling to explore the conditions under which lithospheric removal processes ... -
Improved understanding of dynamic water and mass budgets of high‐alpine karst systems obtained from studying a well‐defined catchment area
; Goeppert, Nadine; Goldscheider, Nico (Hydrological Processes, 2021-04-29)
Large areas of Europe, especially in the Alps, are covered by carbonate rocks and in many alpine regions, karst springs are important sources for drinking water supply. Because of their high variability and heterogeneity, ... -
Microseismicity and Lava Flows Hint at Magmato‐Tectonic Processes Near the Southern Tip of the Fonualei Rift and Spreading Center in the Lau Basin
; Cremanns, M.; ; ; ; (Journal of Geophysical Research: Solid Earth, 2021-04-27)
Spreading centers in the proximity of back‐rolling subduction zones constitute an ideal natural laboratory to investigate the interaction of magmatism and tectonism during the early evolution of back‐arc basins. Using ... -
Impact of Sea‐Ice Model Complexity on the Performance of an Unstructured‐Mesh Sea‐Ice/Ocean Model under Different Atmospheric Forcings
; ; ; ; ; (Journal of Advances in Modeling Earth Systems, 2021-04-27)
We have equipped the unstructured‐mesh global sea‐ice and ocean model FESOM2 with a set of physical parameterizations derived from the single‐column sea‐ice model Icepack. The update has substantially broadened the range ... -
Formation of Continental Microplates Through Rift Linkage: Numerical Modeling and Its Application to the Flemish Cap and Sao Paulo Plateau
; ; ; Heine, Christian; Welford, J. Kim (Geochemistry, Geophysics, Geosystems, 2021-04-22)
Continental microplates are enigmatic plate boundary features, which can occur in extensional and compressional regimes. Here we focus on microplate formation and their temporal evolution in continental rift settings. To ... -
A Volcanic Ash Layer in the Nördlinger Ries Impact Structure (Miocene, Germany): Indication of Crater Fill Geometry and Origins of Long‐Term Crater Floor Sagging
; ; Jung, Dietmar; ; ; ; Reimer, Andreas; (Journal of Geophysical Research: Planets, 2021-04-09)
Since its recognition as an impact structure 60 years ago, no volcanics were anticipated in the circular depression of the 14.8 Ma old Nördlinger Ries. Here, we describe for the first time a volcanic ash‐derived ... -
Internal structure and palsa development at Orravatnsrústir Palsa Site (Central Iceland), investigated by means of integrated resistivity and ground‐penetrating radar methods
; (Permafrost and Periglacial Processes, 2021-03-29)
The natural cyclical development of palsas makes it difficult to use visible signs of decay as reference points for environmental change. Thus, to determine the actual development stage of a palsa, investigations of the ... -
Slip Rate of the Danghe Nan Shan Thrust Fault from 10Be Exposure Dating of Folded River Terraces: Implications for the Strain Distribution in Northern Tibet
; ; Hampel, A.; (Tectonics, 2021-03-23)
The northeastward motion of the Tibetan Plateau along the Altyn Tagh strike‐slip fault causes thrust faulting in three parallel mountain ranges (Qilian Shan, Daxue Shan, and Danghe Nan Shan) in the plateau interior, and ... -
Choice of Pedotransfer Functions Matters when Simulating Soil Water Balance Fluxes
; ; ; ; ; ; ; (Journal of Advances in Modeling Earth Systems, 2021-03-22)
Modeling of the land surface water‐, energy‐, and carbon balance provides insight into the behavior of the Earth System, under current and future conditions. Currently, there exists a substantial variability between model ... -
New results concerning the pedo‐ and chronostratigraphy of the loess–palaeosol sequence Attenfeld (Bavaria, Germany) derived from a multi‐methodological approach
; Klasen, Nicole; ; (Journal of Quaternary Science, 2021-03-18)
Loess–palaeosol sequences (LPS) represent important records of palaeoenvironmental dynamics throughout the Quaternary. During the Pleistocene's dry and cold phases, the Danube's riverbed was one of the major sources for ... -
Persistent Provenance of South Asian Monsoon‐Induced Silicate Weathering Over the Past 27 Million Years
; ; Frank, Martin (Paleoceanography and Paleoclimatology, 2021-03-18)
The development of the South Asian monsoon (SAM) and Himalaya‐Tibetan Plateau uplift were closely intertwined with some studies suggesting that uplift initiated the monsoon whereas others link tectonics with monsoon‐controlled ...