Geophysik, Extraterrestische Forschung: Recent submissions
Now showing items 1-25 of 936
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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 ... -
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 ... -
Seismic Full‐Waveform Inversion of the Crust‐Mantle Structure Beneath China and Adjacent Regions
; ; ; ; ; ; ; (Journal of Geophysical Research: Solid Earth, 2022-09-19)
We present the first‐generation full‐waveform tomographic model (SinoScope 1.0) for the crust‐mantle structure beneath China and adjacent regions. The three‐component seismograms from 410 earthquakes recorded at 2,427 ... -
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, ... -
Evidence for Secondary Ice Production in Southern Ocean Maritime Boundary Layer Clouds
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Atmospheres, 2022-08-16)
Maritime boundary‐layer clouds over the Southern Ocean (SO) have a large shortwave radiative effect. Yet, climate models have difficulties in representing these clouds and, especially, their phase in this observationally ... -
Observational Evidence for Multivariate Drought Hazard Amplifications Across Disparate Climate Regimes
; ; (Earth's Future, 2022-09-16)
Drought poses significant challenges to global water security in a warming world. A global‐scale synthesis of the multivariate drought risk considering interdependencies between drought attributes across disparate climate ... -
Upper Plate Response to a Sequential Elastic Rebound and Slab Acceleration During Laboratory‐Scale Subduction Megathrust Earthquakes
; ; ; (Journal of Geophysical Research: Solid Earth, 2022-09-02)
An earthquake‐induced stress drop on a megathrust instigates different responses on the upper plate and slab. We mimic homogenous and heterogeneous megathrust interfaces at the laboratory scale to monitor the strain ... -
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 Coulomb Stress Response Model for Time‐Dependent Earthquake Forecasts
; (Journal of Geophysical Research: Solid Earth, 2022-08-31)
Seismicity models are probabilistic forecasts of earthquake rates to support seismic hazard assessment. Physics‐based models allow extrapolating previously unsampled parameter ranges and enable conclusions on underlying ... -
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) ... -
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. ... -
Constraining Europa's Subsolar Atmosphere With a Joint Analysis of HST Spectral Images and Galileo Magnetic Field Data
; (Journal of Geophysical Research: Space Physics, 2022-09-06)
We constrain Europa's tenuous atmosphere on the subsolar hemisphere by combining two sets of observations: oxygen emissions at 1,304 and 1,356 Å from Hubble Space Telescope (HST) spectral images and Galileo magnetic field ... -
Solar Activity Driven 27‐Day Signatures in Ionospheric Electron and Molecular Oxygen Densities
; (Journal of Geophysical Research: Space Physics, 2022-09-13)
The complex interactions in the upper atmosphere, which control the height‐dependent ionospheric response to the 27‐day solar rotation period, are investigated with the superposed epoch analysis technique. 27‐day signatures ... -
Earthquake Rupture on Multiple Splay Faults and Its Effect on Tsunamis
; ; ; (Journal of Geophysical Research: Solid Earth, 2022-08-16)
Detailed imaging of accretionary wedges reveals splay fault networks that could pose a significant tsunami hazard. However, the dynamics of multiple splay fault activation during megathrust earthquakes and the consequent ... -
Towards a more comprehensive assessment of the intensity of historical European heat waves (1979–2019)
; ; ; (Atmospheric Science Letters, 2022-07-04)
Europe has been affected by record‐breaking heat waves in recent decades. Using station data and a gridded reanalysis as input, four commonly used heat wave indices, the heat wave magnitude index daily (HWMId), excess heat ... -
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, ... -
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 ... -
Non‐Tidal Background Modeling for Satellite Gravimetry Based on Operational ECWMF and ERA5 Reanalysis Data: AOD1B RL07
; ; ; ; ; ; (Journal of Geophysical Research: Solid Earth, 2022-08-13)
The Atmosphere and Ocean De‐Aliasing Level‐1B (AOD1B) product provides a priori information about temporal variations in the Earth's gravity field induced by non‐tidal circulation processes in atmosphere and ocean. It is ... -
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 ... -
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 ... -
Crustal Structure of the Indochina Peninsula From Ambient Noise Tomography
; ; ; ; ; (Journal of Geophysical Research: Solid Earth, 2022-05-10)
The collision between the Indian and Eurasian plates promotes the southeastward extrusion of the Indochina Peninsula while the internal dynamics of its crustal deformation remain enigmatic. Here, we make use of seismic ... -
Martian Atmospheric Spectral End‐Members Retrieval From ExoMars Thermal Infrared (TIRVIM) Data
; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Planets, 2022-09-09)
Key knowledge about planetary composition can be recovered from the study of thermal infrared spectral range datasets. This range has a huge diagnostic potential because it contains diagnostic absorptions from a planetary ... -
Present‐Day Upper‐Mantle Architecture of the Alps: Insights From Data‐Driven Dynamic Modeling
; ; ; ; (Geophysical Research Letters, 2022-09-19)
The dynamics of the Alps and surrounding regions is still not completely understood, partly because of a non‐unique interpretation of its upper‐mantle architecture. In particular, it is unclear if interpreted slabs are ... -
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 ... -
High‐Resolution Aircraft Observations of Turbulence and Waves in the Free Atmosphere and Comparison With Global Model Predictions
; ; (Journal of Geophysical Research: Atmospheres, 2022-08-23)
High‐resolution flight data obtained from in situ measurements in the free atmosphere aboard the High Altitude and Long Range Research Aircraft (HALO) are used to determine eddy dissipation rates along extended flights ...
