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Now showing items 3422-3441 of 5181
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Oberbodenabtrag: eine Methode zur großflächigen funktionellen Wiederherstellung von Niedermoorlebensräumen? – Ergebnisse einer Machbarkeitsstudie
(TELMA - Berichte der Deutschen Gesellschaft für Moor- und Torfkunde; Band 45; 2015)Abstract: A pilot study was realized in 2013/2014 to investigate the restoration of degraded percolation mires by a large-scale top soil removal. Objectives and results of the study are presented. The project area is ... -
Oberflächenstruktur von Torf und Wasserbewegung auf der Oberfläche
(TELMA - Berichte der Deutschen Gesellschaft für Moor- und Torfkunde; Band 48; 2018)Moorflächen sind auf den Kontinenten überall vorhanden. Aus Mooren lässt sich durch Entwässerung und Trocknung leicht der hochporöse Torfgewinnen. Torf ist ein natürliches und ungiftiges Rohmaterial, das wegen seiner ... -
Oberordovizische (?) Favositida aus dem Kaolinsand von Braderup/Sylt
Hilmer, Gero;
(Fossilien von Sylt /Bd.3Fossilien von Sylt /Bd.3, 1990)
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Oberordovizische (?) Favositida aus dem Kaolinsand von Braderup/Sylt
Hilmer, Gero; (Fossilien von Sylt, Bd. 3, 1990)
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Oblique Gravity Wave Propagation During Sudden Stratospheric Warmings
;; ; (Journal of Geophysical Research: Atmospheres, 2020)
Gravity waves (GWs) are important for coupling the mesosphere to the lower atmosphere during sudden stratospheric warmings (SSWs). Here, a minor SSW is internally generated in a simulation with the upper-atmosphere ... -
Observations and high-resolution simulations of convective precipitation organization over the tropical Atlantic
; ; (Quarterly Journal of the Royal Meteorological Society, 2020)
High-resolution simulations (grid spacing 2.5 km) are performed with ICON-LEM to characterize convective organization in the Tropics during August 2016 over a large domain ranging from northeastern South America, along the ... -
Observations of Laboratory and Natural Slow Slip Events: Hikurangi Subduction Zone, New Zealand
; ; ; ; ; Kopf, Achim J. (Geochemistry, Geophysics, Geosystems, 2020)
Slow slip events (SSEs) are recognized as an important component of plate boundary fault slip, and there is a need for laboratory friction data on natural samples to guide comparisons with natural SSEs. Here, we compile a ... -
Observations on Astraeospongium meniscum (Roemer, 1948) from the Silurian of western Tennessee; constructional morphology and palaeobiology of the Astraeospongiidae (Calcarea, Heteractinellidae)
Mehl, Dorte; (Berliner geowissenschaftliche Abhandlungen : Reihe E, 1996)
Astraeospongium is found to form secondary calcareous basal skeletons and thus may be attributed to the morphological grouping "coralline sponges". In A. meniscum, a bowl-shaped sponge with a massive skeleton of octactins, ... -
Observed and Simulated Variability of Droplet Spectral Dispersion in Convective Clouds Over the Amazon
; ; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Atmospheres, 2021-10-15)
In this study, the variability of the spectral dispersion of droplet size distributions (DSDs) in convective clouds is investigated. Analyses are based on aircraft measurements of growing cumuli near the Amazon basin, and ... -
Observed Subdecadal Variations of European Summer Temperatures
Müller, W.A.;; Ghosh, R. (Geophysical Research Letters, 2020)
We identify subdecadal variations in European summer temperatures in coupled and uncoupled century-long reanalyses. Spectral analyses reveal significant peaks at 5–10 years in the midtwentieth century. The subdecadal ... -
Observing noctilucent clouds
(Internat. Assoc. of Geomagnetism & Aeronomy, 2006)This manual and instruction book was written by a group of active researchers, both professional and amateur. There are chapters giving practical advice for taking visual observations, photographing the clouds with film ... -
Ocean Bottom Pressure Variability: Can It Be Reliably Modeled?
Androsov, Alexey; Boebel, Olaf;; ; Macrander, Andreas; (Journal of Geophysical Research: Oceans, 2020)
Ocean bottom pressure (OBP) variability serves as a proxy of ocean mass variability, the knowledge of which is needed in geophysical applications. The question of how well it can be modeled by the present general ocean ... -
Ocean Heat Transport Into the Barents Sea: Distinct Controls on the Upward Trend and Interannual Variability
; ; ; ; ; ; ; ; ; (Geophysical Research Letters, 2019)
Ocean heat transport through the Barents Sea Opening (BSO) has strong impacts on the Barents Sea ice extent and the climate. In this paper we quantified the contributions from different atmospheric forcing components to ... -
Ocean Kinetic Energy Backscatter Parametrization on Unstructured Grids: Impact on Global Eddy-Permitting Simulations
;; ; ; (Journal of Advances in Modeling Earth Systems, 2020)
In this study we demonstrate the potential of a kinetic energy backscatter scheme for use in global ocean simulations. Ocean models commonly employ (bi)harmonic eddy viscosities causing excessive dissipation of kinetic ... -
Ocean Model Formulation Influences Transient Climate Response
; ; ; ; ; ; (Journal of Geophysical Research: Oceans, 2021-12-05)
The transient climate response (TCR) is 20% higher in the Alfred Wegener Institute Climate Model (AWI‐CM) compared to the Max Planck Institute Earth System Model (MPI‐ESM) whereas the equilibrium climate sensitivity (ECS) ... -
Oceanic anoxic event (OAE) 1b - high resolution geochemical studies, Mazagan Plateau and the Vocontian Basin
(Univ. Köln, 2009)Während der Kreide wurden zahlreiche Störungen des globalen Kohlenstoffkreislaufes aufgezeichnet. Diese Störungen führten zu organisch reichen Ablagerungen, den sogenannten ozeanischen anoxischen Ereignissen (OAEs). Der ... -
Offshore Freshened Groundwater in Continental Margins
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Martin‐Nagle, Renée; ; ; ; ; Trembath‐Reichert, Elizabeth; ; ; (Reviews of Geophysics, 2021-01-04)
First reported in the 1960s, offshore freshened groundwater (OFG) has now been documented in most continental margins around the world. In this review we compile a database documenting OFG occurrences and analyze it to ... -
ogs5py: A Python‐API for the OpenGeoSys 5 Scientific Modeling Package
(Groundwater, 2020-06-16)High‐performance numerical codes are an indispensable tool for hydrogeologists when modeling subsurface flow and transport systems. But as they are written in compiled languages, like C/C++ or Fortran, established software ... -
Oldest entirely preserved sponges and other fossils from the Lowermost Cambrian and a new facies reconstruction of the Yangtze platform (China)
Steiner, M.; Mehl, D.;; Erdtmann, B.-D. (1993)