Auflistung Geophysik, Extraterrestische Forschung nach Titel
Anzeige der Dokumente 1030-1049 von 1211
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The Contribution of Sprite Streamers to the Chemical Composition of the Mesosphere-Lower Thermosphere
; ; ; (Geophysical Research Letters, 2020)
Sprites are mesospheric filamentary discharges that liberate and accelerate large quantities of electrons. They produce local enhancements of some chemical species and fast (millisecond) optical emissions. In this work, ... -
The Delayed Ionospheric Response to the 27‐day Solar Rotation Period Analyzed With GOLD and IGS TEC Data
; ; (Journal of Geophysical Research: Space Physics, 2021-02-07)
The delayed ionospheric response is analyzed for two well‐defined 27‐day solar rotation periods in the year 2019 with solar radio flux index F10.7 and Global‐scale Observations of the Limb and Disk (GOLD) data, like solar ... -
The Dimmest State of the Sun
; ; ; ; ; ; ; (Geophysical Research Letters, 2020)
How the solar electromagnetic energy entering the Earth's atmosphere varied since preindustrial times is an important consideration in the climate change debate. Detrimental to this debate, estimates of the change in total ... -
The earthquake of September 3, 1770 near Alfhausen (Lower Saxony, Germany): a real, doubtful, or fake event?
(Historical Earthquakes, Paleoseismology, Neotectonics and Seismic Hazard: New Insights and Suggested Procedures, 2020)In the weekly newspaper of Osnabrück (Germany) of November 3, 1770, a report about a local earthquake was published. Pastor Buck described ground motion effects in the manor ‘Haus Horst’, 1.5 km away from the village of ... -
The Effect of Plasma Boundaries on the Dynamic Evolution of Relativistic Radiation Belt Electrons
; ; ; ; ; ; ; (Journal of Geophysical Research: Space Physics, 2020)
Understanding the dynamic evolution of relativistic electrons in the Earth's radiation belts during both storm and nonstorm times is a challenging task. The U.S. National Science Foundation's Geospace Environment Modeling ... -
The effect of stochastically perturbed parametrisation tendencies (SPPT) on rapidly ascending air streams
; ; ; (Quarterly Journal of the Royal Meteorological Society, 2022-03-23)
The stochastically perturbed parametrisation tendency (SPPT) scheme is a well‐established technique in ensemble forecasting to address model uncertainty by introducing perturbations into the tendencies provided by the ... -
The Energetic 2022 Seismic Unrest Related to Magma Intrusion at the North Mid‐Atlantic Ridge
; ; ; (Geophysical Research Letters, 2023-07-06)
Abstract A seismic swarm affected the 53.3°–54.3° Latitude North section of the Mid‐Atlantic Ridge ...
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The energy spectrum of primary cosmic rays measured with the KASCADE-Grande experiment
(Univ. Siegen, 2008) -
The fate of singularities in quantum cosmology and the application of generalized effective equations to constrained quantum systems
(Univ. Köln, 2009)The first part of the thesis is concerned with the fate of singularities in quantum cosmology. The second part addresses the derivation of predictions from quantum cosmology. In the first part, two classes of cosmological ... -
The Fingerprints of Flexure in Slab Seismicity
; ; ; ; (Tectonics, 2020)
Earthquake moment tensors in eastern Pacific (ePac) slabs typically show downdip tensional (DT) axes, whereas in the western Pacific (wPac), they typically show downdip compressional (DC) axes or have mixed orientations ... -
The formation of massive stars
(Univ. Bochum, 2008) -
The generalized Ekman model for the tropical cyclone boundary layer revisited: Addendum
; (Quarterly Journal of the Royal Meteorological Society, 2021-03-23)
Motivated by prior research examining the myth of inertial stability as a radial restoring force in the tropical cyclone boundary layer, we explore factors determining the vertical velocity at the top of the linear vortex ... -
The generalized Ekman model for the tropical cyclone boundary layer revisited: The myth of inertial stability as a restoring force
; (Quarterly Journal of the Royal Meteorological Society, 2020)
We revisit the linear boundary-layer approximation that expresses a generalized Ekman balance and use it to clarify a range of interpretations in the previous literature on the tropical cyclone boundary layer. Some of these ... -
The Geomagnetic Kp Index and Derived Indices of Geomagnetic Activity
; ; ; ; (Space Weather, 2021-05-07)
The geomagnetic Kp index is one of the most extensively used indices of geomagnetic activity, both for scientific and operational purposes. This article reviews the properties of the Kp index and provides a reference for ... -
The Global Seismic Moment Rate of Mars After Event S1222a
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; (Geophysical Research Letters, 2023-04-06)
The seismic activity of a planet can be described by the corner magnitude, events larger than which are extremely unlikely, and the seismic moment rate, the long‐term average of annual seismic moment release. Marsquake ... -
The H_1n+3 + H2 isotopic system - origin of deuterium astrochemistry
(Univ. Köln, 2008)Dense cold molecular clouds reckoned to be stellar nurseries are the scene of an extreme molecular deuteration. Despite the cosmic D/H ratio of 10^{-5}, molecular species in prestellar cores are observed to contain nearly ... -
The Height‐Dependent Delayed Ionospheric Response to Solar EUV
; ; ; (Journal of Geophysical Research: Space Physics, 2022-03-24)
Based on the analysis of electron density Ne profiles (Grahamstown ionosonde), a case study of the height‐dependent ionospheric response to two 27‐day solar rotation periods in 2019 is performed. A well‐defined sinusoidal ... -
The Heligoland Glacitectonic Complex in the southeastern North Sea: indicators of a pre‐ or early‐Elsterian ice margin
; ; ; (Boreas, 2021-09-01)
Glacial landforms are abundant in the North Sea basin and are often used to reconstruct the impact and dynamics of ice sheets during the Pleistocene. Geophysical methods have allowed the mapping and structural analysis of ... -
The ICON Earth System Model Version 1.0
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This work documents the ICON‐Earth System Model (ICON‐ESM V1.0), the first coupled model based on the ICON (ICOsahedral Non‐hydrostatic) framework with its unstructured, icosahedral grid concept. The ICON‐A atmosphere uses ... -
The Impact of Different Atmospheric CO2 Concentrations on Large Scale Miocene Temperature Signatures
; ; ; ; ; ; ; (Paleoceanography and Paleoclimatology, 2023-02-07)
Based on inferences from proxy records the Miocene (23.03–5.33 Ma) was a time of amplified polar warmth compared to today. However, it remains a challenge to simulate a warm Miocene climate and pronounced polar warmth at ...
