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Anzeige der Dokumente 5717-5736 von 6912
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Surface properties of asteroids from mid-infrared observations and thermophysical modeling
(Univ. Berlin, 2007)The subject of this work is the physical characterization of asteroids, with an emphasis on the thermal inertia of near-Earth asteroids (NEAs). Thermal inertia governs the Yarkovsky effect, a non-gravitational force which ... -
Surface spots on cool giant stars probed by spectro-astrometry
(Univ. Hamburg, 2009)Spectro-astrometry is a technique to obtain information about the structure of an astronomical source on sub-diffraction limited spatial scales down to milli- or micro-arcseconds. The method exploits the shift of the ... -
Surface velocity fields of active rock glaciers and ice‐debris complexes in the Central Andes of Argentina
(Earth Surface Processes and Landforms, 2020-12-30)Rock glaciers and transitional ice‐debris complexes predominate the Central Andean landform assemblage, yet regional studies on their state of activity and their kinematics remain sparse. Here we utilize the national glacier ... -
Surface Wave and Roller Dissipation Observed With Shore‐Based Doppler Marine Radar
(Journal of Geophysical Research: Oceans, 2022-08-24)Surface wave energy and dissipation are observed across the surf zone. Utilizing the concept of surface rollers, a new scaling is introduced to obtain the energy flux and dissipation related to rollers from Doppler velocities ... -
“Surface,” “satellite” or “simulation”: Mapping intra-urban microclimate variability in a desert city
(International Journal of Climatology, 2019)Mapping spatial and temporal variability of urban microclimate is pivotal for an accurate estimation of the ever-increasing exposure of urbanized humanity to global warming. This particularly concerns cities in arid/semi-arid ... -
Surwold und Freising: - Erste sektorübergreifende Ansätze zur Definition einer nachhaltigen Moornutzung
(TELMA - Berichte der Deutschen Gesellschaft für Moor- und Torfkunde; Beiheft 6; 2020) -
Sustainability impact assessment of peatland-use scenarios: Confronting land use supply with demand
(Ecosystem Services, 2017)Sustainable development of land use is determined by changes of the regional supply of Land Use Functions (LUFs) and the demand of future societal land use claims. LUFs are based on the ecosystem services concept, but ... -
Sustainable Cathodes for Lithium‐Ion Energy Storage Devices Based on Tannic Acid—Toward Ecofriendly Energy Storage
(Advanced Sustainable Systems, 2020-11-18)The use of organic materials with reversible redox activity holds enormous potential for next‐generation Li‐ion energy storage devices. Yet, most candidates are not truly sustainable, i.e., not derived from renewable ... -
Sustainable research software for high-quality computational research in the Earth System Sciences: Recommendations for universities, funders and the scientific community in Germany
(2023)Similar to other research fields, new knowledge in the Earth System Sciences is increasingly produced by computational research. However, the reproducibility of this type of research has been shown to be very limited, and ... -
Sustaining Saturn's Electron Radiation Belts Through Episodic, Global-Scale Relativistic Electron Flux Enhancements
(Journal of Geophysical Research: Space Physics, 2020)The L shell distributions of MeV electrons in Saturn's radiation belt are investigated orbit by orbit for the 13-year exploration of Cassini. It is found that in addition to the monotonic decrease profiles, there are orbits ... -
Südwest-Afrika - Böden und Bodenkultur ; Versuch einer Klimapedologie warmer Trockengebiete
(Reimer, Berlin, 1963)Das vorliegende Werk ist das Ergebnis einer mehr als sechsmonatigen bodenkundlichen Erkundungsreise durch fast alle zugänglichen Teile von Südwestafrika (SWA) und analytischer Auswertung der mitgebrachten Bodenproben. ... -
Symmetry relations in wurtzite nitrides and oxide nitrides and the curious case of Pmc21
(Acta Crystallographica Section A, 2021-03-23)Binary III–V nitrides such as AlN, GaN and InN in the wurtzite‐type structure have long been considered as potent semiconducting materials because of their optoelectronic properties, amongst others. With rising concerns ... -
Symposium „Future Utilisation of Peatlands“ vom 22. bis 24. August 2002 in Bremen
(TELMA - Berichte der Deutschen Gesellschaft für Moor- und Torfkunde; Beiheft 6; 2020) -
Syn-kinematic magma ascent and batholith inflation (Sierra de San Luis/Argentina)
(11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)The measurement of the anisotropy of the magnetic susceptibility (AMS) is now routinely used since more than four decades in the analyses of rock fabrics in granitic rocks (e.g. Stacy 1960, Henry 1975, Gleizes et al. 1993). ... -
Syn-metamorphic sulfidation of the Gamsberg zinc deposit, South Africa
(Mineralogy and Petrology, 2021-09-06)The Mesoproterozoic Aggeneys-Gamsberg ore district, South Africa, is one of the world´s largest sulfidic base metal concentrations and well-known as a prime example of Broken Hill-type base metal deposits, traditionally ... -
Synchronous Changes in Sediment Transport and Provenance at the Iceland-Faroe Ridge Linked to Millennial Climate Variability From 55 to 6 ka BP
(Geochemistry, Geophysics, Geosystems, 2019)Unique marine sediment cores retrieved from the southwestern slope of the Iceland-Faroe Ridge (IFR), close to the main axis of the Iceland-Scotland Overflow Water (ISOW), revealed prominent sedimentary cycles reflecting ... -
Synoptic analysis and simulation of an unusual dust event over the Atacama Desert
(Atmospheric Science Letters, 2019)An unusual dust event over the Atacama Desert occurred in July 2016. Here, a synoptic study of the event is carried out using the NCEP FNL analysis data and WRF-chem simulations. The “zonalization” of a mid-tropospheric ... -
Synoptic circulation changes over Central Europe from 1900 to 2100: Reanalyses and Coupled Model Intercomparison Project phase 6
(International Journal of Climatology, 2021-12-14)While the evidence for anthropogenic climate change continues to strengthen, and concerns about severe weather events are increasing, global projections of regional climate change are still uncertain due to model‐dependent ... -
Synthesis, crystal structure and structure–property relations of strontium orthocarbonate, Sr2CO4
(Acta Crystallographica Section B, 2021-02-09)Carbonates containing CO4 groups as building blocks have recently been discovered. A new orthocarbonate, Sr2CO4 is synthesized at 92 GPa and at a temperature of 2500 K. Its crystal structure was determined by in situ ... -
Synthetic resampling strategies and machine learning for digital soil mapping in Iran
(European Journal of Soil Science, 2020-01-08)Most common machine learning (ML) algorithms usually work well on balanced training sets, that is, datasets in which all classes are approximately represented equally. Otherwise, the accuracy estimates may be unreliable ...