Auflistung Geophysik, Extraterrestische Forschung nach Titel
Anzeige der Dokumente 1006-1025 von 1223
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Studying martian dust devils by applying pattern recognition algorithms to multi-mission camera images
(Univ. Köln, 2007)A pattern recognition and classification software was developed to detect dust devils automatically in surface images from Mars. The amount of images taken by spacecraft orbiting Mars is increasing continuously and the ... -
Studying the Global Spatial Randomness of Impact Craters on Mercury, Venus, and the Moon With Geodesic Neighborhood Relationships
(Journal of Geophysical Research: Planets, 2021-03-29)Impact crater records on planetary surfaces are often analyzed for their spatial randomness. Generalized approaches such as the mean second closest neighbor distance (M2CND) and standard deviation of adjacent area (SDAA) ... -
Subsoil classification and geotechnical zonation for Guadalajara City, México: Vs30, soil fundamental periods, 3D structure and profiles
(Near Surface Geophysics, 2020-01-25)Guadalajara, Jalisco, is the second largest city in Mexico with around 4.5 million inhabitants. A high seismic hazard exists in the city due to forces produced by the interaction between the Rivera, Cocos and North American ... -
Subsurface Radiation Environment of Mars and Its Implication for Shielding Protection of Future Habitats
(Journal of Geophysical Research: Planets, 2020)In order to quantify the optimal radiation shielding depth on Mars in preparation for future human habitats on the red planet, it is important to understand the Martian radiation environment and its dependence on the ... -
Suche nach dunkler Materie mit den H.E.S.S.-Cherenkov-Teleskopen
(Univ. Hamburg, 2008)Die Natur der dunklen Materie ist nach wie vor ungeklart und stellt eine der fundamentalsten Fragen der aktuellen Kosmologie dar. In vielen verschiedenen Experimenten wird versucht, diese Teilchen, die sogenannten WIMPs ... -
Superconducting hot electron bolometers on silicon nitride membranes for terahertz waveguide mixers
(Univ. Köln, 2004)The topic of this work is the development of Hot Electron Bolometer (HEB) mixers on freestanding membrane substrates for terahertz high resolution heterodyne receiver systems. The radio astronomy in the THz frequency ... -
Supernova remnants in nearby galaxies
(Astronomische Nachrichten, 2020)Supernova remnants (SNRs) are the aftermath of stellar explosions, which inject large amounts of energy into the interstellar medium (ISM), carving out new structures and transferring kinetic energy to the ISM. They also ... -
Supernova-driven turbulence and magnetic field amplification in disk galaxies
(Univ. Potsdam, 2009)Supernovae are known to be the dominant energy source for driving turbulence in the interstellar medium. Yet, their effect on magnetic field amplification in spiral galaxies is still poorly understood. Analytical models ... -
Suprathermal Fe in the Earth's Plasma Environment: Cluster RAPID Observations
(Journal of Geophysical Research: Space Physics, 2020)Baryonic matter in geospace is almost exclusively in a plasma state, with protons (H +) and to some extent ionized helium (He) and oxygen (O) being the dominant ion species. But also other heavier ion species and even ... -
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,” “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 ... -
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 ... -
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 ... -
Targeted covariance inflation for 3D‐volume radar reflectivity assimilation with the LETKF
(Quarterly Journal of the Royal Meteorological Society, 2021-09-30)The local ensemble transform Kalman filter (LETKF) suggested by Hunt et al., 2007 is a very popular method for ensemble data assimilation. It is the operational method for convective‐scale data assimilation at Deutscher ... -
Tectonic and magmatic processes along the transform margin of Southern Africa
(Univ. Bremen, 2009)Giant shear processes shaped Africa's southern margin during the breakup of the supercontinent Gondwana. They acted along a more than 1000 km long transform fault, whose remnant structure the Agulhas-Falkland Fracture ... -
Tectonique et géodynamique actuelle de l'arc alpin - approche sismotectonique et modélisation numérique
(Univ. Neuchâtel, 2004)Le régime tectonique actuel de la chaîne des Alpes centrales/occidentales est analysé grâce à une compilation de 389 mécanismes au foyer couvrant l'ensemble de l'arc alpin, ainsi que par l'étude détaillée du séisme de ... -
Tectono‐Magmatic, Sedimentary, and Hydrothermal History of Arsinoes and Pyrrhae Chaos, Mars
(Journal of Geophysical Research: Planets, 2020-12-23)Arsinoes and Pyrrhae Chaos are two adjacent chaotic terrains located east of Valles Marineris and west of Arabia Terra, on Mars. In this work, we produced a morpho‐stratigraphic map of the area, characterized by a volcanic ... -
Teleconnection Patterns of Different El Niño Types Revealed by Climate Network Curvature
(Geophysical Research Letters, 2022-09-09)The diversity of El Niño events is commonly described by two distinct flavors, the Eastern Pacific (EP) and Central Pacific (CP) type. While the remote impacts, that is, teleconnections, of EP and CP events have been studied ...