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Anzeige der Dokumente 4997-5016 von 6897
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Quantifying Tectonic and Glacial Controls on Topography in the Patagonian Andes (46.5°S) From Integrated Thermochronometry and Thermo‐Kinematic Modeling
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; ; ; ; (Journal of Geophysical Research: Earth Surface, 2021-07-28)
The Patagonian Andes have been used to illustrate the dependency of major topographic changes in response to glacial erosion processes dominating over tectonic deformation and uplift. Here, we investigate tectonic and ... -
Quantifying the Central European Droughts in 2018 and 2019 With GRACE Follow-On
; ; ; (Geophysical Research Letters, 2020)
The GRACE-FO satellites launched in May 2018 are able to quantify the water mass deficit in Central Europe during the two consecutive summer droughts of 2018 and 2019. Relative to the long-term climatology, the water mass ... -
Quantifying the Effects of EMIC Wave Scattering and Magnetopause Shadowing in the Outer Electron Radiation Belt by Means of Data Assimilation
; ; ; (Journal of Geophysical Research: Space Physics, 2020)
In this study we investigate two distinct loss mechanisms responsible for the rapid dropouts of radiation belt electrons by assimilating data from Van Allen Probes A and B and Geostationary Operational Environmental ... -
Quantifying the impact of chemicals on stable carbon and oxygen isotope values of raw pollen
; Hennig, Julian; Riedel, Frank; Helle, Gerhard (Journal of Quaternary Science, 2021-03-23)
Purification protocols to extract pollen from lake sediments contain chemicals that alter the carbon and oxygen pollen‐isotope values according to pollen characteristics and family affiliation. Modern (raw) pollen of ... -
Quantifying the impacts of land use/land cover change on the water balance in the afforested River Basin, Pakistan
; ; (Environmental Earth Sciences, 2020-09-23)
Land use and land cover (LULC) change is one of the key driving elements responsible for altering the hydrology of a watershed. In this study, we investigated the spatio-temporal LULC changes between 2001 and 2018 and their ... -
Quantifying Uncertainties in Snow Depth Mapping From Structure From Motion Photogrammetry in an Alpine Area
; (Water Resources Research, 2019)
Mapping snow conditions in alpine areas is crucial for monitoring local hydrology to support water resource management decisions. Recently, the use of structure-from-motion multiview stereo 3-D reconstruction (or SFM ... -
Quantitative 3D imaging of partially saturated granular materials under uniaxial compression
; ; ; ; (Acta Geotechnica, 2021-08-23)
Gauging the mechanical effect of partial saturation in granular materials is experimentally challenging due to the very low suctions resulting from large pores. To this end, a uniaxial (zero radial stress) compression test ... -
Quantitative Analysen magmatischer Gesteine mittels reflexionsspektroskopischer Infrarot-Messungen
(GFZ, Helmholtz-Zentrum, 2004)The objective of this research is the quantification of modal composition of magmatic rocks using infraredspectra and based on spectral analysis of individual minerals. For that purpose a new, model-based spectralunmixing ... -
Quantitative Analysis of the Misorientation Distribution After the Recrystallisation of Tensile Deformed Copper Single Crystals
(Textures and microstructures, 1991)Recrystallisation experiments in tensile deformed <100>- and <111>-oriented single crystals of high purity copper yielded very accurate information about the orientations of recrystallised grains and deformation microstructure. ... -
Quantitative assessment of carbon sequestration reduction induced by disturbances in temperate Eurasian steppe
Chen, Yizhao; Ju, Weimin; Groisman, Pavel; Li, Jianlong; Propastin, Pavel; Xu, Xia; Zhou, Wei; (Environmental Research Letters, 2017)
The temperate Eurasian steppe (TES) is a region where various environmental, social, and economic stresses converge. Multiple types of disturbance exist widely across the landscape, and heavily influence carbon cycling ... -
Quantitative assessments of water-use efficiency in Temperate Eurasian Steppe along an aridity gradient.
Chen, Yizhao; Li, Jianlong; Ju, Weimin;; Qin, Zhihao; Huang, Yiye; Jeelani, Nasreen; Padarian, José; Propastin, Pavel (PloS one, 2017)
Water-use efficiency (WUE), defined as the ratio of net primary productivity (NPP) to evapotranspiration (ET), is an important indicator to represent the trade-off pattern between vegetation productivity and water consumption. ... -
Quantitative critique of leaf‐based paleo‐CO2 proxies: Consequences for their reliability and applicability
; Royer, Dana L.; Franks, Peter J.; Roth‐Nebelsick, Anita (Geological Journal, 2020-03-18)
A variety of proxies have been developed to reconstruct paleo‐CO2 from fossil leaves. These proxies rely on some combination of stomatal morphology, leaf δ13C, and leaf gas exchange. A common conceptual framework for ... -
Quantitative estimation of aerobic diagenetic overprint of palaeoproductivity signals
(Univ. Bremen, 2008)Organic-walled dinoflagellate cysts, oxidation, degradation, organic matter. - Species-selective aerobic decomposition affects fossil organic-walled dinoflagellate cyst (dinocyst) records and hence dinocyst-based interpretations ... -
Quantitative models of AGB populations with subsolar metallicities and their mass loss
(Univ. Berlin, 2007) -
Quantitative Rietveld-Analyse von amorphen Materialien - am Beispiel von Hochofenschlacken und Flugaschen
(Univ. Halle, 2007)Zsfassung in engl. Sprache -
Quartale Vergletscherungen im Hindukusch, Karakorum und West-Himalaya, Pakistan - Ein Überblick
(E&G – Quaternary Science Journal; Vol.51, No. 1)Für die pakistanischen Hochgebirge Hindukusch (Chitral, Swat, Ghizar-Gebiet), Karakorum (Hunza, Gilgit-Raum, Rakaposhi, Haramosh, Baltistan, K2-Region) und West-Himalaya (Nanga Parbat, Kaghan-Gebiet, Deosai-Plateau) haben ... -
Quartäre kalkige Äolianite von N-Menorca (Balearen, westliches Mittelmeer)
(E&G – Quaternary Science Journal; Vol.40, No. 1)Vom Norden der Insel Menorca (Balearen, westliches Mittelmeer) werden drei Serien von kalkigen Äolianiten beschrieben. In ihrer petrographischen Zusammensetzung unterscheiden sich Proben aus der älteren von solchen aus den ... -
Quartäre Klimaphasen und Subrosion als Faktoren der Bildung von Kies-Terrassen im südwestlichen Harzvorland
(E&G – Quaternary Science Journal; Vol.32, No. 1)Aufbau und Verbreitung der Kieskörper der Harzflüsse Sieber und Oder werden beschrieben, sowie verschiedene Erosionsterrassen ohne eigenen Kieskörper. Das Alter der Kiese und der Erosionsstufen kann mit den sich teilweise ...
