Auflistung Geophysik, Extraterrestische Forschung nach Erscheinungsdatum
Anzeige der Dokumente 1-20 von 936
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A Decentralized Approach for Modeling Organized Convection Based on Thermal Populations on Microgrids
; (Journal of Advances in Modeling Earth Systems, 2022-10-26)
In this study, a spectral model for convective transport is coupled to a thermal population model on a two‐dimensional horizontal “microgrid,” covering the typical gridbox size of general circulation models. The goal is ... -
Combination Strategy for the Geocentric Realization of Regional Epoch Reference Frames
; ; ; ; ; ; (Journal of Geophysical Research: Solid Earth, 2022-10-25)
For high‐resolution regional geodetic applications, the International Terrestrial Reference Frame (ITRF) is complemented by regional densifications. These are realized either as multi‐year solutions related to a tectonic ... -
A Seismic Approach to Flood Detection and Characterization in Upland Catchments
; ; ; ; (Geophysical Research Letters, 2022-10-17)
About 10% of Europe's surface area is prone to rapid flooding of rivers confined in valleys. The devastating potential of such floods is exacerbated by the deficits of existing gauging networks, including low station ... -
Spatio‐Temporal Level Variations of the Martian Seasonal North Polar Cap From Co‐Registration of MOLA Profiles
; ; ; ; ; ; ; ; (Journal of Geophysical Research: Planets, 2022-10-14)
The seasonal deposition and sublimation of CO2 constitute a major element in Martian volatile cycles. We reprocess the Mars Orbiter Laser Altimeter (MOLA) data and apply co‐registration procedures to obtain spatio‐temporal ... -
Hidden Potential in Predicting Wintertime Temperature Anomalies in the Northern Hemisphere
; ; ; ; ; ; (Geophysical Research Letters, 2022-10-11)
Variability of the North Atlantic Oscillation (NAO) drives wintertime temperature anomalies in the Northern Hemisphere. Dynamical seasonal prediction systems can skilfully predict the winter NAO. However, prediction of the ... -
On the Resolution of Triangular Meshes
(Journal of Advances in Modeling Earth Systems, 2022-10-08)
It is generally agreed that the resolution of a regular quadrilateral mesh is the side length of quadrilateral cells. There is less agreement on the resolution of triangular meshes, exacerbated by the fact that the numbers ... -
Magmatic Activity and Dynamics of Melt Supply of Volcanic Centers of Ultraslow Spreading Ridges: Hints From Local Earthquake Tomography at the Knipovich Ridge
; ; (Geochemistry, Geophysics, Geosystems, 2022-10-07)
Along ultraslow spreading ridges melt is distributed unequally, but melt focusing guides melt away from amagmatic segments toward volcanic centers. An interplay of tectonism and magmatism is thought to control melt ascent, ... -
Imaging the Absorbing Feeding and Eruptive Pathways of Deception Island, Antarctica
; ; ; (Geophysical Research Letters, 2022-10-04)
Deception Island is one of the most active and best‐documented volcanoes in Antarctica. Since its last eruption in 1970, several geophysical surveys have targeted reconstructing its magmatic systems. However, geophysics ... -
Groundwater Responses to Earth Tides: Evaluation of Analytical Solutions Using Numerical Simulation
; ; (Journal of Geophysical Research: Solid Earth, 2022-10-04)
Harmonic Earth tide components in well water levels have been used to estimate hydraulic and geomechanical subsurface properties. However, the robustness of various methods based on analytical solutions has not been ... -
D" Reflection Polarities Inform Lowermost Mantle Mineralogy
; ; (Geochemistry, Geophysics, Geosystems, 2022-10-04)
Polarities of seismic reflections at the discontinuity atop the D" region (PdP and SdS) indicate the sign of the velocity contrast across the D" reflector. Recent studies found PdP polarities matching and opposite those ... -
Multi‐Ion Oscillitons—Origin of Coherent Magnetospheric EMIC Waves
; (Journal of Geophysical Research: Space Physics, 2022-10-02)
The recent spacecraft observations by MMS and Van Allen Probes associated with electromagnetic ion cyclotron (EMIC) waves in the Earth magnetosphere emphasize the important role of multi‐ion plasma composition for generation ... -
Eruption Forecasting of Strokkur Geyser, Iceland, Using Permutation Entropy
; ; ; (Journal of Geophysical Research: Solid Earth, 2022-10-01)
A volcanic eruption is usually preceded by seismic precursors, but their interpretation and use for forecasting the eruption onset time remain a challenge. A part of the eruptive processes in open conduits of volcanoes may ... -
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, ... -
Sensitivity of Sea Ice Growth to Snow Properties in Opposing Regions of the Weddell Sea in Late Summer
(Geophysical Research Letters, 2022-09-30)
The sensitivity of sea ice to the contrasting seasonal and perennial snow properties in the southeastern and northwestern Weddell Sea is not yet considered in sea ice model and satellite remote sensing applications. However, ... -
Determining the Origin of Tidal Oscillations in the Ionospheric Transition Region With EISCAT Radar and Global Simulation Data
; ; ; ; ; ; ; (Journal of Geophysical Research: Space Physics, 2022-09-30)
At high‐latitudes, diurnal and semidiurnal variations of temperature and neutral wind velocity can originate both in the lower atmosphere (UV or infrared absorption) and in the thermosphere‐ionosphere (ion convection, EUV ... -
Tropical Instability Waves and Wind‐Forced Cross‐Equatorial Flow in the Central Atlantic Ocean
; ; ; ; ; (Geophysical Research Letters, 2022-09-29)
Based on velocity data from a long‐term moored observatory located at 0°N, 23°W we present evidence of a vertical asymmetry during the intraseasonal maxima of northward and southward upper‐ocean flow in the equatorial ... -
Using Principal Component Analysis of Satellite and Ground Magnetic Data to Model the Equatorial Electrojet and Derive Its Tidal Composition
; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Space Physics, 2022-09-25)
The intensity of the equatorial electrojet (EEJ) shows temporal and spatial variability that is not yet fully understood nor accurately modeled. Atmospheric solar tides are among the main drivers of this variability but ... -
A Parameterization of Cirrus Cloud Formation: Revisiting Competing Ice Nucleation
(Journal of Geophysical Research: Atmospheres, 2022-09-24)
This study develops an advanced physically‐based parameterization of heterogeneous ice nucleation in cirrus clouds that includes an updated parameterization of stochastic homogeneous freezing of supercooled solution droplets. ... -
Direct Evidence of a Slow‐Slip Transient Modulating the Spatiotemporal and Frequency‐Magnitude Earthquake Distribution: Insights From the Armutlu Peninsula, Northwestern Turkey
; ; ; ; ; ; (Geophysical Research Letters, 2022-09-22)
Earthquakes and slow‐slip events interact, however, detailed studies investigating their interplay are still limited. We generate the highest resolution microseismicity catalog to date for the northern Armutlu Peninsula ... -
An Empirical Model of the Equatorial Electron Pitch Angle Distributions in Earth's Outer Radiation Belt
; ; ; ; ; ; ; (Space Weather, 2022-09-20)
In this study, we present an empirical model of the equatorial electron pitch angle distributions (PADs) in the outer radiation belt based on the full data set collected by the Magnetic Electron Ion Spectrometer (MagEIS) ...
