Results 31 to 40 of about 36,673 (286)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+2 more sources

Enhanced Radiation Levels at Aviation Altitudes and Their Relationship to Plasma Waves in the Inner Magnetosphere

open access: yesSpace Weather, 2023
It is believed that galactic cosmic rays and solar energetic particles are the two major sources of ionizing radiation. However, the radiation source may also be due to relativistic electrons that are associated with precipitation from the Van Allen ...
Homayon Aryan   +4 more
doaj   +1 more source

Specifying High Altitude Electrons Using Low‐Altitude LEO Systems: Updates to the SHELLS Model

open access: yesSpace Weather, 2023
We describe a new version of the SHELLS model, which specifies the outer electron belt environment as observed by the Van Allen Probes using the Kp Index and data from Polar‐orbiting Operational Environmental Satellites and the Meteorological Operational
A. J. Boyd   +3 more
doaj   +1 more source

Earth's Van Allen Radiation Belts: From Discovery to the Van Allen Probes Era [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2019
AbstractDiscovery of the Earth's Van Allen radiation belts by instruments flown on Explorer 1 in 1958 was the first major discovery of the Space Age. The observation of distinct inner and outer zones of trapped megaelectron volt (MeV) particles, primarily protons at low altitude and electrons at high altitude, led to early models for source and loss ...
W. Li, M.K. Hudson
openaire   +1 more source

EVIDENCE OF THE EARTH’S INNER RADIATION BELTS DURING THE LOW SOLAR AND GEOMAGNETIC ACTIVITY OBTAINED WITH THE STEP-F INSTRUMENT [PDF]

open access: yesRadio Physics and Radio Astronomy, 2021
Purpose: The subject of research is the spatio-temporal charged particles in the Earth’s magnetosphere outside the South Atlantic magnetic Anomaly during the 11-year cycle of solar activity minimum.
O. V. Dudnik, O. V. Yakovlev
doaj   +1 more source

A data assimilation-based forecast model of outer radiation belt electron fluxes

open access: yesEarth and Planetary Physics, 2023
Because radiation belt electrons can pose a potential threat to the safety of satellites orbiting in space, it is of great importance to develop a reliable model that can predict the highly dynamic variations in outer radiation belt electron fluxes.
Yuan Lei   +5 more
doaj   +1 more source

New Perspective on Phase Space Density Analysis for Outer Radiation Belt Enhancements: The Influence of MeV Electron Injections

open access: yesGeophysical Research Letters, 2023
Observation of growing phase space density (PSD) peak in the outer electron radiation belt has been considered evidence for local wave‐driven acceleration as a primary cause of radiation belt enhancement.
H.‐J. Kim   +5 more
doaj   +1 more source

Modeling inward diffusion and slow decay of energetic electrons in the Earth\u27s outer radiation belt [PDF]

open access: yes, 2015
A new 3-D diffusion code is used to investigate the inward intrusion and slow decay of energetic radiation belt electrons (\u3e0.5 MeV) observed by the Van Allen Probes during a 10 day quiet period on March 2013.
Angelopoulos, V.   +14 more
core   +4 more sources

Outer Van Allen Radiation Belt Response to Interacting Interplanetary Coronal Mass Ejections

open access: yesJournal of Geophysical Research: Space Physics, 2019
We study the response of the outer Van Allen radiation belt during an intense magnetic storm on 15–22 February 2014. Four interplanetary coronal mass ejections (ICMEs) arrived at Earth, of which the three last ones were interacting.
E. Kilpua   +10 more
semanticscholar   +1 more source

Characteristics of High‐Energy Protons in the Equatorial Plane of Inner Radiation Belt Observed by Van Allen Probes

open access: yesJournal of Geophysical Research: Space Physics, 2023
Long‐term and short‐term variations of high‐energy protons in the inner radiation belt are of major importance in geospace research. The entire inner radiation belt at 1.1 < L < 3.0 have been investigated based on Van Allen Probes Relativistic Electron ...
Zhaohai He   +6 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy