Leonie Pick
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View article: Can ECH Wave Scattering Explain the Unaccounted Electron Loss During the 17 March 2013 Geomagnetic Storm?
Can ECH Wave Scattering Explain the Unaccounted Electron Loss During the 17 March 2013 Geomagnetic Storm? Open
The interaction of electrons with electrostatic electron cyclotron harmonic (ECH) waves in the Earth's magnetosphere can lead to the scattering of plasma sheet electrons into the atmospheric loss cone, affecting the evolution of electron p…
View article: Electron Scattering by Electrostatic Electron Cyclotron Harmonic Waves and Time Domain Structures During Storm-Time
Electron Scattering by Electrostatic Electron Cyclotron Harmonic Waves and Time Domain Structures During Storm-Time Open
Recent studies have shown that existing ring current models overestimate the electron flux of 10-50 keV during storm-time, which is due to a missing loss process operating in the pre-midnight sector. At the same time, there are several stu…
View article: Daedalus Ionospheric Profile Continuation (DIPCont): Monte Carlo studies assessing the quality of in situ measurement extrapolation
Daedalus Ionospheric Profile Continuation (DIPCont): Monte Carlo studies assessing the quality of in situ measurement extrapolation Open
In situ satellite exploration of the lower thermosphere–ionosphere system (LTI) as anticipated in the recent Daedalus mission proposal to ESA will be essential to advance the understanding of the interface between the Earth's atmosphere an…
View article: Variation of Electron Lifetime Due To Scattering by Electrostatic Electron Cyclotron Harmonic Waves in the Inner Magnetosphere With Electron Distribution Parameters
Variation of Electron Lifetime Due To Scattering by Electrostatic Electron Cyclotron Harmonic Waves in the Inner Magnetosphere With Electron Distribution Parameters Open
Through resonant wave‐particle interactions with electrostatic electron cyclotron harmonic (ECH) waves, low‐energy plasma sheet electrons can be scattered into the atmospheric loss cone and precipitate. This process can be investigated by …
View article: Variation of Electron Lifetime due to Scattering by Electrostatic Electron Cyclotron Harmonic Waves in the Inner Magnetosphere with Electron Distribution Parameters
Variation of Electron Lifetime due to Scattering by Electrostatic Electron Cyclotron Harmonic Waves in the Inner Magnetosphere with Electron Distribution Parameters Open
Dataset that supports the Results, Tables and Figures of "Variation of Electron Lifetime due to Scattering by Electrostatic Electron Cyclotron Harmonic Waves in the Inner Magnetosphere with Electron Distribution Parameters".
View article: Variation of Electron Lifetime due to Scattering by Electrostatic Electron Cyclotron Harmonic Waves in the Inner Magnetosphere with Electron Distribution Parameters
Variation of Electron Lifetime due to Scattering by Electrostatic Electron Cyclotron Harmonic Waves in the Inner Magnetosphere with Electron Distribution Parameters Open
Dataset that supports the Results, Tables and Figures of "Variation of Electron Lifetime due to Scattering by Electrostatic Electron Cyclotron Harmonic Waves in the Inner Magnetosphere with Electron Distribution Parameters".
View article: Daedalus Ionospheric Profile Continuation (DIPCont)
Daedalus Ionospheric Profile Continuation (DIPCont) Open
The Daedalus Ionospheric Profile Continuation (DIPCont) project is concerned with the question how in situ measurements in the lower thermosphere and ionosphere (LTI) can be extrapolated using parametric models of observables and derived v…
View article: Vectorial Association of Linearly Oriented Residua: Application to Swarm High-latitude Magnetic Field Measurements
Vectorial Association of Linearly Oriented Residua: Application to Swarm High-latitude Magnetic Field Measurements Open
We introduce the methodological framework VALOR for the analysis of field-aligned current (FAC) sheets based on dual-spacecraft magnetic field observations. VALOR generalizes existing approaches in two respects. First, it takes advantage o…
View article: Introducing the “VALOR” analysis framework for auroral field-aligned current sheets using observations from Swarm Alpha and Charlie
Introducing the “VALOR” analysis framework for auroral field-aligned current sheets using observations from Swarm Alpha and Charlie Open
<p>The investigation of auroral field-aligned current (FAC) sheets is crucial in the context of space weather research since they serve as main transmitters of energy and momentum across geospace domains. Different magnetosphere-iono…
View article: Temperature and Emissivity Separation ‘Draping’ Algorithm Applied to Hyperspectral Infrared Data
Temperature and Emissivity Separation ‘Draping’ Algorithm Applied to Hyperspectral Infrared Data Open
In the presented work, the spectral emissivity of basaltic melts at magmatic temperatures was retrieved in a laboratory-controlled experiment by measuring their spectral radiance. Granulated bombs of Etnean basalts were melted and the radi…
View article: Update on scales and energetics of auroral field-aligned currents as observed by Swarm
Update on scales and energetics of auroral field-aligned currents as observed by Swarm Open
<p>Auroral field-aligned currents (FACs) are of key importance for the electromagnetic coupling and the energy transport in the magnetosphere-ionosphere system. We use Swarm multi-spacecraft magnetic and electric field measurements f…
View article: The centennial evolution of geomagnetic activity and its driving mechanisms
The centennial evolution of geomagnetic activity and its driving mechanisms Open
This cumulative thesis is concerned with the evolution of geomagnetic activity since the beginning of the 20th century, that is, the time-dependent response of the geomagnetic field to solar forcing. The focus lies on the description of th…
View article: Robust Adaptive Spacecraft Array Derivative Analysis
Robust Adaptive Spacecraft Array Derivative Analysis Open
Multispacecraft missions such as Cluster, Themis, Swarm, and MMS contribute to the exploration of geospace with their capability to produce gradient and curl estimates from sets of spatially distributed in situ measurements. This paper com…
View article: A Statistical Classifier for Historical Geomagnetic Storm Drivers Derived Solely From Ground‐Based Magnetic Field Measurements
A Statistical Classifier for Historical Geomagnetic Storm Drivers Derived Solely From Ground‐Based Magnetic Field Measurements Open
Solar wind observations show that geomagnetic storms are mainly driven by interplanetary coronal mass ejections (ICMEs) and corotating or stream interaction regions (C/SIRs). We present a binary classifier that assigns one of these drivers…
View article: Evolution of Large‐Scale Magnetic Fields From Near‐Earth Space During the Last 11 Solar Cycles
Evolution of Large‐Scale Magnetic Fields From Near‐Earth Space During the Last 11 Solar Cycles Open
We use hourly mean magnetic field measurements from 34 midlatitude geomagnetic observatories between 1900 and 2015 to investigate the long‐term evolution and driving mechanism of the large‐scale external magnetic field at ground. The Hourl…
View article: ClassifyStorms - an automated classifier for geomagnetic storm drivers based on machine learning techniques
ClassifyStorms - an automated classifier for geomagnetic storm drivers based on machine learning techniques Open
The software package “ClassifyStorms” version 1.0.1 performs a classification of geomagnetic storms according to their interplanetary driving mechanisms based exclusively on magnetometer measurements from ground. In this version two such d…
View article: Assessment of Dual-Band method with Indoor Analog Experiment
Assessment of Dual-Band method with Indoor Analog Experiment Open
The evaluation of infrared satellite images over active lava flows assists the identification of potentially threatened areas and thereby the overall lava inundation hazard assessment. The estimation of the lava flow's size and temperature…
View article: Developing a new magnetospheric current index characterising hourly to decadal variations
Developing a new magnetospheric current index characterising hourly to decadal variations Open
Geomagnetic field observations are a superposition of contributions from the geodynamo in the core, remanent or\ninduced magnetic fields in the lithosphere, and the magnetic signals produced by current systems in the ionosphere\nand magnet…