Denny M. Oliveira
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View article: Local Time Dependence of High‐Latitude Pc5 Wave Activity Driven by Interplanetary Shocks and Foreshock Transients, Using a New ULF Index
Local Time Dependence of High‐Latitude Pc5 Wave Activity Driven by Interplanetary Shocks and Foreshock Transients, Using a New ULF Index Open
We present a study of ground‐based Pc5 ultra‐low frequency (ULF) wave response to over 400 interplanetary (IP) shocks and 18 foreshock transients. We investigated the local time dependence of magnetospheric Pc5 wave power generated by IP s…
View article: Why Do Sudden Commencements Sometimes Generate Disproportionate Geomagnetically Induced Currents?
Why Do Sudden Commencements Sometimes Generate Disproportionate Geomagnetically Induced Currents? Open
Geomagnetically Induced Currents (GICs) in grounded, conducting infrastructure (e.g., power networks) represent an important space weather hazard. GICs are driven by the changing magnetic field at the Earth's surface. Due to a sparsity of …
View article: Comment on egusphere-2025-4119
Comment on egusphere-2025-4119 Open
View article: First Results of a New Inversion Tool for Thermospheric Neutral Mass Density Computations During Severe Geomagnetic Storms
First Results of a New Inversion Tool for Thermospheric Neutral Mass Density Computations During Severe Geomagnetic Storms Open
View article: Strong Westward Current Pulse at Auroral Latitudes Extending to Dawn‐Side Low‐Latitudes Due To Enhanced Density Within Kelvin‐Helmholtz Wave Vortex in Solar Wind
Strong Westward Current Pulse at Auroral Latitudes Extending to Dawn‐Side Low‐Latitudes Due To Enhanced Density Within Kelvin‐Helmholtz Wave Vortex in Solar Wind Open
A series of coronal mass ejections (CMEs) from the Sun, interacted with one another and formed a complex interplanetary‐CME (ICME) that impinged Earth's magnetosphere on 10 May 2024 and caused the strongest geomagnetic storm of the past tw…
View article: Eigen‐Swarm: Swarm's Thermospheric Mass Density Modeling via Eigen‐Decomposition
Eigen‐Swarm: Swarm's Thermospheric Mass Density Modeling via Eigen‐Decomposition Open
Precise thermospheric mass density (TMD) prediction is essential for satellite orbital tracking, reentry calculations, and upper atmospheric processes under varying solar and magnetospheric conditions. In this paper, we construct an empiri…
View article: Tracking reentries of Starlink satellites during the rising phase of solar cycle 25
Tracking reentries of Starlink satellites during the rising phase of solar cycle 25 Open
The exponential increase of low-Earth orbit (LEO) satellites in the past 5 years has brought into intense focus the need for reliable monitoring and reentry prediction to safeguard from space collisions and ground debris impacts. However, …
View article: Anomalous Substorm Signatures During Sudden Solar‐Wind Pressure Enhancements
Anomalous Substorm Signatures During Sudden Solar‐Wind Pressure Enhancements Open
Magnetospheric substorms, characterized by the rapid release of energy stored in the magnetotail, play a central role in space weather dynamics. These events are typically triggered by enhanced magnetic reconnection between the Earth's mag…
View article: Temporal and Spatial Dynamics of Nitric Oxide Production at High Latitudes Caused by an ICME‐Driven Storm onDec. 14, 2006
Temporal and Spatial Dynamics of Nitric Oxide Production at High Latitudes Caused by an ICME‐Driven Storm onDec. 14, 2006 Open
Geomagnetic storms release large amounts of energy on Earth's upper atmosphere at high latitudes that result in the heating and upward expansion of the neutral gas. During geomagnetic storms driven by interplanetary coronal mass ejections …
View article: Interplanetary shock data base
Interplanetary shock data base Open
This interplanetary shock data base was compiled with Wind, Advanced Composition Explorer (ACE), and Deep Space Climate Observatory (DSCOVR) observations collected at the Lagrangian point L1. The list ranges from January 1995 to December 2…
View article: On the Geoelectric Field Response to the SSC of the May 2024 Super Storm Over Europe
On the Geoelectric Field Response to the SSC of the May 2024 Super Storm Over Europe Open
Solar variability can lead to significant disturbances, such as coronal mass ejections (CMEs). A CME impacting the Earth's magnetosphere often causes geomagnetic storms that affect not only the magnetosphere but also the ionosphere, the up…
View article: The 10 October 2024 geomagnetic storm may have caused the premature reentry of a Starlink satellite
The 10 October 2024 geomagnetic storm may have caused the premature reentry of a Starlink satellite Open
In this short communication, we qualitatively analyze possible effects of the 10 October 2024 geomagnetic storm on accelerating the reentry of a Starlink satellite from very low-Earth orbit (VLEO). The storm took place near the maximum of …
View article: The Solar and Geomagnetic Storms in 2024 May: A Flash Data Report
The Solar and Geomagnetic Storms in 2024 May: A Flash Data Report Open
In 2024 May, the scientific community observed intense solar eruptions that resulted in a great geomagnetic storm and auroral extensions, highlighting the need to document and quantify these events. This study mainly focuses on their quant…
View article: Predicting Interplanetary Shock Occurrence for Solar Cycle 25: Opportunities and Challenges in Space Weather Research
Predicting Interplanetary Shock Occurrence for Solar Cycle 25: Opportunities and Challenges in Space Weather Research Open
Interplanetary (IP) shocks are perturbations observed in the solar wind. IP shocks correlate well with solar activity, being more numerous during times of high sunspot numbers. Earth‐bound IP shocks cause many space weather effects that ar…
View article: First direct observations of interplanetary shock impact angle effects on actual geomagnetically induced currents: The case of the Finnish natural gas pipeline system
First direct observations of interplanetary shock impact angle effects on actual geomagnetically induced currents: The case of the Finnish natural gas pipeline system Open
The impact of interplanetary (IP) shocks on the Earth’s magnetosphere can greatly disturb the geomagnetic field and electric currents in the magnetosphere-ionosphere system. At high latitudes, the current systems most affected by the shock…
View article: The Solar and Geomagnetic Storms in May 2024: A Flash Data Report
The Solar and Geomagnetic Storms in May 2024: A Flash Data Report Open
In May 2024, the scientific community observed intense solar eruptions that resulted in a great geomagnetic storm and auroral extension, highlighting the need to document and quantify these events. This study mainly focuses on their quanti…
View article: The Loss of Starlink Satellites in February 2022: How Moderate Geomagnetic Storms Can Adversely Affect Assets in Low‐Earth Orbit
The Loss of Starlink Satellites in February 2022: How Moderate Geomagnetic Storms Can Adversely Affect Assets in Low‐Earth Orbit Open
On 3 February 2022, SpaceX launched 49 Starlink satellites, 38 of which unexpectedly de‐orbited. Although this event was attributed to space weather, definitive causality remained elusive because space weather conditions were not extreme. …
View article: Substorm‐Time Ground <i>d</i><i>B</i>/<i>d</i><i>t</i> Variations Controlled by Interplanetary Shock Impact Angles: A Statistical Study
Substorm‐Time Ground <i>d</i><i>B</i>/<i>d</i><i>t</i> Variations Controlled by Interplanetary Shock Impact Angles: A Statistical Study Open
In this study, we investigate the effects caused by interplanetary (IP) shock impact angles on the subsequent ground d B / d t variations during substorms. IP shock impact angles have been revealed as a major factor controlling the subsequ…
View article: BENEFÍCIOS DA PRÁTICA DE EXERCÍCIOS FÍSICOS SOBRE A QUALIDADE DO SONO
BENEFÍCIOS DA PRÁTICA DE EXERCÍCIOS FÍSICOS SOBRE A QUALIDADE DO SONO Open
Introdução: A existência humana é marcada por alterações no estilo de vida, em consequência do processo de evolução ou por revoluções que permitem seu próprio desenvolvimento. As alterações sofridas pelo ser humano afetam sua maneira de vi…
View article: Interplanetary shock data base
Interplanetary shock data base Open
Interplanetary (IP) shocks are frequently observed in the solar wind (Burlaga, 1971; Stone and Tsurutani, 1985). Many levels of different kinds of geomagnetic activity may follow the impact of IP shocks on the Earth’s magnetosphere. Such e…
View article: The loss of the Starlink satellites in February 2022: How moderate geomagnetic storms can adversely affect assets in Low-Earth orbit [Dataset]
The loss of the Starlink satellites in February 2022: How moderate geomagnetic storms can adversely affect assets in Low-Earth orbit [Dataset] Open
Data used in support of the journal article of the name "The loss of the Starlink satellites in February 2022: How moderate geomagnetic storms can adversely affect assets in Low-Earth orbit", including: 1. Average values of J^2, J_parallel…
View article: Cross-Scale and Cross-Regime Coupling in the ITM: Studying Weather, not just Climate, in the Middle and Upper Atmosphere
Cross-Scale and Cross-Regime Coupling in the ITM: Studying Weather, not just Climate, in the Middle and Upper Atmosphere Open
Whitepaper #347 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: basic research. Additional topics: planetary ionospheres / upper atmospheres; space-based missions/projects; system science.
View article: Closed Access
Closed Access Open
Closed Access
View article: Interplanetary shock data base
Interplanetary shock data base Open
This interplanetary shock data base was compiled with Wind, Advanced Composition Explorer (ACE), and Deep Space Climate Observatory (DSCOVR) observations collected at the Lagrangian point L1. The list ranges from January 1995 to December 2…
View article: Geoeffectiveness of interplanetary shocks controlled by impact angles: past research, recent advancements, and future work
Geoeffectiveness of interplanetary shocks controlled by impact angles: past research, recent advancements, and future work Open
Interplanetary shocks are disturbances commonly observed in the solar wind. IP shock impacts can cause a myriad of space weather effects in the Earth’s magnetopause, inner magnetosphere, ionosphere, thermosphere, and ground magnetic field.…
View article: Editorial: Understanding the causes of asymmetries in Earth’s magnetosphere-ionosphere system
Editorial: Understanding the causes of asymmetries in Earth’s magnetosphere-ionosphere system Open
EDITORIAL article Front. Astron. Space Sci., 28 March 2023Sec. Space Physics Volume 10 - 2023 | https://doi.org/10.3389/fspas.2023.1173630
View article: Interplanetary shock data base
Interplanetary shock data base Open
This interplanetary shock data base was compiled with Wind and Advanced Composition Explorer (ACE) observations collected at the Lagrangian point L1. The list ranges from January 1995 to December 2022. Many shock parameters are included, s…
View article: Interplanetary shock data base
Interplanetary shock data base Open
This interplanetary shock data base was compiled with Wind and Advanced Composition Explorer (ACE) observations collected at the Lagrangian point L1. The list ranges from January 1995 to December 2022. Many shock parameters are included, s…
View article: The Geospace Dynamics Constellation (GDC) NEMISIS Investigation
The Geospace Dynamics Constellation (GDC) NEMISIS Investigation Open
View article: Investigation of the Differences in Onset Times for Magnetically Conjugate Magnetometers
Investigation of the Differences in Onset Times for Magnetically Conjugate Magnetometers Open
We have identified nearly 1,000 onsets using two pairs of hemispheric conjugate ground magnetometers where the onset is defined based on a sharp decline in the H component of the magnetic field at a ground magnetometer station. Specificall…