Auflistung Geophysik, Extraterrestische Forschung nach Titel
Anzeige der Dokumente 688-707 von 1197
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Nanoscale Imaging of High‐Field Magnetic Hysteresis in Meteoritic Metal Using X‐Ray Holography
(Geochemistry, Geophysics, Geosystems, 2020-08-03)Stable paleomagnetic information in meteoritic metal is carried by the “cloudy zone”: ~1–10 μm‐wide regions containing islands of ferromagnetic tetrataenite embedded in a paramagnetic antitaenite matrix. Due to their small ... -
NanoSIMS analysis and high resolution electron microscopy of silicate stardust grains from red giant stars and supernova explosions
(Univ. Frankfurt (Main), 2009)This thesis deals with the analysis of presolar silicates and oxides by high resolution mass spectrometry and electron microscopy techniques. This stardust was identified by its extreme oxygen isotopic anomalies, which ... -
Near Surface Properties of Martian Regolith Derived From InSight HP3‐RAD Temperature Observations During Phobos Transits
(Geophysical Research Letters, 2021-08-09)We use the Martian surface temperature response to Phobos transits observed next to the InSight lander in Elysium Planitia to constrain the thermal properties of the uppermost layer of regolith. Modeled transit lightcurves ... -
Near- and mid-infrared studies of the galactic center and Sagittarius A*
(Univ. Köln, 2007)The focus of this thesis lies on the analysis and interpretation of near- and mid-infrared images of the Galactic center, with a view to improving the understanding of this region, especially at longer wavelengths. Multi-band ... -
Near-surface sediment structures at cold seeps and their physical control on seepage - a geophysical and geological study in the southern Gulf of Mexico and at the frontal Makran Accretionary prism, Pakistan
(Univ. Bremen, 2009)The major objective of the study is to investigate how near-surface sediment structures and other geological aspects control the nature and occurrence of cold fluid seepage. Mainly high resolution multichannel seismic data ... -
Near‐surface three‐dimensional multicomponent source and receiver S‐wave survey in the Tannwald Basin, Germany: Acquisition and data processing
(Near Surface Geophysics, 2022-06-22)Shallow 3‐D reflection seismic surveys using S‐waves have rarely been carried out, even though S‐waves can provide higher resolution subsurface images than P‐waves. We conducted a 3‐D near‐surface multicomponent source and ... -
Neighboring Column Approximation—An Improved 3D Thermal Radiative Transfer Approximation for Non-Rectangular Grids
(Journal of Advances in Modeling Earth Systems, 2020)We present a significantly improved version of the Neighboring Column Approximation (NCA 2.0), a fast 3D approximation for the calculation of thermal heating and cooling rates in cloudy atmospheres for large eddy simulation ... -
Neogene seismotectonics of the south-central Chile margin - subduction-related processes over various temporal and spatial scales
(Univ. Potsdam, 2007)The Andean orogen is the most outstanding example of mountain building caused by the subduction of oceanic below continental lithosphere. The Andes formed by the subduction of the Nazca and Antarctic oceanic plates under ... -
Neue Möglichkeiten interaktiver 3-dimensionaler Modellierungen von Potentialfeldern und ihrer Ableitungen
(Frühjahrstagung 2015 "Versorgungssicherheit, Umwelt, Wettbewerbsfähigkeit - Welchen Beitrag leistet die E&P-Industrie?, 2015-04-22)Die hier dargestellten Methoden dienen der drei-dimensionalen, interaktiven Bearbeitung der Potentialfelder Gravimetrie und Magnetik, sowie ihrer Ableitungen (Schwere- und Magnetik-Tensor). Die Methodik ist sowohl für ... -
New constraints on the density of the extragalactic background light and the discovery of TeV g-rays [gamma-rays] from the BL Lac 1ES 0347-121 and the extended source HESS J1023-575
(Univ. Hamburg, 2007)Die H.E.S.S. Kollaboration betreibt ein stereoskopisches System aus vier großen abbildenden Cherenkov-Teleskopen für den Nachweis sehr hochenergetischer Gamma-Strahlung (VHE; > 100 GeV). In dieser Arbeit wird über den ... -
New impact diagnostics for cross‐validation of different observation types
(Quarterly Journal of the Royal Meteorological Society, 2022-07-31)New cross‐validation diagnostics have been derived by further partitioning well‐established impact diagnostics. They are related to consistency relations, the most prominent of which indicates whether the first‐guess ... -
New Methods for Linking Science Objectives to Remote Sensing Observations: A Concept Study Using Single- and Dual-Pair Satellite Gravimetry Architectures
(Earth and Space Science, 2020)In this manuscript, we present a new analysis tool, called space-time-accuracy grid (STAG) analysis, to simultaneously assess the performance of an observing system architecture across space and time. Such an analysis tool ... -
No Cookie for Climate Change
(Geophysical Research Letters, 2019)Climate change leads to changes in cloud-radiative heating, which previous work showed have a substantial impact on the response of the atmospheric circulation to climate change. We here compare to what extent this ... -
Noah‐MP With the Generic Crop Growth Model Gecros in the WRF Model: Effects of Dynamic Crop Growth on Land‐Atmosphere Interaction
(Journal of Geophysical Research: Atmospheres, 2022-07-14)In this paper we coupled a crop growth model to the Weather Research and Forecasting model with its land surface model Noah‐MP and demonstrated the influence of the weather driven crop growth on land‐atmosphere (L‐A) ... -
Non-analytical line profiles in stellar atmospheres - for planetary host star systems
(Univ. Hamburg, 2008)In this work, nonanalytical line profiles for both cool and hot, dense atmospheres are added to the opacity calculations of the multipurpose stellar atmosphere code PHOENIX. Their influence on model atmospheres and synthetic ... -
Non-circular motions in dark matter halos
(Univ. Bochum, 2008)Diese Dissertation untersucht, ob die Dynamik von Galaxien in Einklang mit den Ergebnissen aus CDM (cold dark matter) Simulationen ist. Im Wesentlichen wurden 19 Galaxien hinsichtlich Abweichungen von kreisförmigen Bewegungen ... -
Nonlinear electron synchrotron cooling and synchrotron self Compton flaring of TeV blazars
(Univ. Bochum, 2008)We investigate the double-peak profile of the emission of powerful cosmic non-thermal radiation sources with dominant magnetic field self-generation like TeV blazars. Therefore, we assume a flare to occur in the emission ... -
Nonstationarity of the link between the Tropics and the summer East Atlantic pattern
(Atmospheric Science Letters, 2021-02-08)A 700‐year pre‐industrial control run with the MPI‐ESM‐LR model is used to investigate the link between the summer East Atlantic (SEA) pattern and the Pacific‐Caribbean rainfall dipole (PCD), a link that has previously ... -
Non‐Isotropic Contraction and Expansion of Samples in Diamond Anvil Cells: Implications for Thermal Conductivity at the Core‐Mantle Boundary
(Geophysical Research Letters, 2022-09-30)The thermal conductivities of mantle and core materials have a major impact on planetary evolution, but their experimental determination requires precise knowledge of sample thickness at high pressure. Despite its importance, ... -
Non‐Linear Dimensionality Reduction With a Variational Encoder Decoder to Understand Convective Processes in Climate Models
(Journal of Advances in Modeling Earth Systems, 2022-08-13)Deep learning can accurately represent sub‐grid‐scale convective processes in climate models, learning from high resolution simulations. However, deep learning methods usually lack interpretability due to large internal ...