Geophysik, Extraterrestische Forschung
Recent Submissions
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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 ... -
Tropical Instability Waves and Wind‐Forced Cross‐Equatorial Flow in the Central Atlantic Ocean
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; ; ; ; (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 ... -
Non‐Linear Dimensionality Reduction With a Variational Encoder Decoder to Understand Convective Processes in Climate Models
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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 ... -
Pore Space Topology Controls Ultrasonic Waveforms in Dry Volcanic Rocks
(Geophysical Research Letters, 2022-09-15)Pore space controls the mechanical and transport properties of rocks. At the laboratory scale, seismic modeling is usually performed in relatively homogeneous settings, and the influence of the pore space on the recorded ... -
Atmospheric circulation patterns that trigger heavy rainfall in West Africa
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Classification of atmospheric circulation patterns (CP) is a common tool for downscaling rainfall, but it is rarely used for West Africa. In this study, a two‐step classification procedure is proposed for this region, which ... -
Direct Evidence of a Slow‐Slip Transient Modulating the Spatiotemporal and Frequency‐Magnitude Earthquake Distribution: Insights From the Armutlu Peninsula, Northwestern Turkey
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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 ... -
Continental Break‐Up Under a Convergent Setting: Insights From P Wave Radial Anisotropy Tomography of the Woodlark Rift in Papua New Guinea
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To explore the dynamic mechanism of continental rifting within a convergent setting, we determine the first P wave radial anisotropic tomography beneath the Woodlark rift in southeastern Papua New Guinea, which develops ... -
Limited Earthquake Interaction During a Geothermal Hydraulic Stimulation in Helsinki, Finland
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We investigate induced seismicity associated with a hydraulic stimulation campaign performed in 2020 in the 5.8 km deep geothermal OTN‐2 well near Helsinki, Finland as part of the St1 Deep Heat project. A total of 2,875 m3 ... -
Earthquake Database of Germany
; (5th International Colloquium Historical Earthquakes, Paleoseismology, Neotectonics and Seismic Hazard, 11 to 13 October 2017, Hannover, Germany - Abstracts, 2018)
Earthquake Database of Germany Diethelm Kaiser, Gernot Hartmann Federal Institute for Geosciences and Natural Resources, Hannover, Germany The earthquake catalogue for Germany (Leydecker 2011) was integrated in the ... -
The Two‐Energies Turbulence Scheme Coupled to the Assumed PDF Method
; ; (Journal of Advances in Modeling Earth Systems, 2022-05-14)
An update of the two‐energy turbulence scheme is presented, the 2TE + APDF scheme. The original version of the two‐energy scheme is able to successfully model shallow convection without the need of an additional parameterization ... -
Initial Response of Nightside Auroral Currents to a Sudden Commencement: Observations of Electrojet and Substorm Onset
; (Journal of Geophysical Research: Space Physics, 2022-04-06)
Storm sudden commencements (SSC) often precede geomagnetic storms. Commonly, it takes some hours from the step‐like change that marks the SSC to the start of the magnetic storm activity. In a subset of cases, however, ... -
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 ... -
Noah‐MP With the Generic Crop Growth Model Gecros in the WRF Model: Effects of Dynamic Crop Growth on Land‐Atmosphere Interaction
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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) ... -
Climate Change and Weather Extremes in the Eastern Mediterranean and Middle East
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Observation‐based and modeling studies have identified the Eastern Mediterranean and Middle East (EMME) region as a prominent climate change hotspot. While several initiatives have addressed the impacts of climate change ... -
Comparing the performance of high‐resolution global precipitation products across topographic and climatic gradients of Central Asia
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Accurate and reliable precipitation data with high spatial and temporal resolution are essential in studying climate variability, water resources management, and hydrological forecasting. A range of global precipitation ... -
Tropical Continents Rainier Than Expected From Geometrical Constraints
; (AGU Advances, 2022-07-06)
Abundant rainfall over tropical land masses sustains rich ecosystems, a crucial source of biodiversity and sink of carbon. Here, we use two characteristics of the observed tropical precipitation distribution, its distinctive ... -
Improving the Vertical Modeling of Tropospheric Delay
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Accurate tropospheric delays from Numerical Weather Models (NWM) are an important input to space geodetic techniques, especially for precise real‐time Global Navigation Satellite Systems, which are indispensable to earthquake ... -
Mapping the Brightness of Ganymede's Ultraviolet Aurora Using Hubble Space Telescope Observations
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We analyze Hubble Space Telescope observations of Ganymede made with the Space Telescope Imaging Spectrograph between 1998 and 2017 to generate a brightness map of Ganymede's oxygen emission at 1,356 Å. Our Mercator projected ... -
Modeling the Transport and Deposition of 10Be Produced by the Strongest Solar Proton Event During the Holocene
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Prominent excursions in the number of cosmogenic nuclides (e.g., 10Be) around 774 CE/775 document the most severe solar proton event (SPE) throughout the Holocene. Its manifestation in ice cores is valuable for geochronology, ... -
Multiple Angle Observations Would Benefit Visible Band Remote Sensing Using Night Lights
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The spatial and angular emission patterns of artificial and natural light emitted, scattered, and reflected from the Earth at night are far more complex than those for scattered and reflected solar radiation during daytime. ... -
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 ... -
Effective buoyancy and CAPE: Some implications for tropical cyclones
; (Quarterly Journal of the Royal Meteorological Society, 2022-06-01)
We review the widely used concepts of “buoyancy” and “convective available potential energy” (CAPE) in relation to deep convection in tropical cyclones and discuss their limitations. A fact easily forgotten in applying ... -
Performance of a Rotational Sensor to Decipher Volcano Seismic Signals on Etna, Italy
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Volcano‐seismic signals such as long‐period events and tremor are important indicators for volcanic activity and unrest. However, their wavefield is complex and characterization and location using traditional seismological ... -
The relationship between precipitation and its spatial pattern in the trades observed during EUREC4A
; ; ; (Quarterly Journal of the Royal Meteorological Society, 2022-05-16)
Trade wind convection organises into a rich spectrum of spatial patterns, often in conjunction with precipitation development. Which role spatial organisation plays for precipitation and vice versa is not well understood. ... -
Contrasting State‐Dependent Effects of Natural Forcing on Global and Local Climate Variability
; ; ; ; ; (Geophysical Research Letters, 2022-05-17)
Natural forcing from solar and volcanic activity contributes significantly to climate variability. The post‐eruption cooling of strong volcanic eruptions was hypothesized to have led to millennial‐scale variability during ...
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