Results 11 to 20 of about 18,554 (245)

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 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.
Jennifer Kasbohm   +2 more
wiley  

+1 more source

A logistic regression model for predicting the occurrence of intense geomagnetic storms [PDF]

open access: yesAnnales Geophysicae, 2005
A logistic regression model is implemented for predicting the occurrence of intense/super-intense geomagnetic storms. A binary dependent variable, indicating the occurrence of intense/super-intense geomagnetic storms, is regressed against a series ...
N. Srivastava
doaj   +1 more source

Using Temporal Relationship of Thermospheric Density With Geomagnetic Activity Indices and Joule Heating as Calibration for NRLMSISE‐00 During Geomagnetic Storms

open access: yesSpace Weather, 2022
The responses of thermospheric densities to geomagnetic activity indices and Joule heating are analyzed during 265 geomagnetic storms and can be used to calibrate the model NRLMSISE‐00 with neutral mass density observed at 400 km based on the CHAMP ...
Xin Wang   +11 more
doaj   +1 more source

Ionosphere over Eastern North Atlantic Midlatitudinal Zone during Geomagnetic Storms

open access: yesAtmosphere, 2023
The ionospheric response at middle latitudes to geomagnetic storms is not yet very well understood. Total electron content (TEC) variations associated with eight strong geomagnetic storms between 2015 and 2022 obtained from GNSS receivers in the eastern ...
Teresa Barata   +4 more
doaj   +1 more source

A study of geomagnetic storms [PDF]

open access: yesGeophysical Journal International, 1978
The interplanetary energy flux is estimated on the basis of the Poynting flux and its variations with the rate of energy dissipation in terms of: (1) the ring-current particle injection, (2) Joule dissipation in the ionosphere, and (3) auroral particle injection for 15 major geomagnetic storms.
Paul Perreault, S.-I. Akasofu
openaire   +1 more source

The presence of large sunspots near the central solar meridian at the times of major geomagnetic storms [PDF]

open access: yesAnnales Geophysicae, 2009
A further study is made of the validity of a technique developed by the authors to identify historical occurrences of intense geomagnetic storms, which is based on finding approximately coincident observations of sunspots and aurorae recorded in East ...
D. M. Willis   +3 more
doaj   +1 more source

On extreme geomagnetic storms [PDF]

open access: yesJournal of Space Weather and Space Climate, 2014
Extreme geomagnetic storms are considered as one of the major natural hazards for technology-dependent society. Geomagnetic field disturbances can disrupt the operation of critical infrastructures relying on space-based assets, and can also result in terrestrial effects, such as the Quebec electrical disruption in 1989. Forecasting potential hazards is
Cid Tortuero, Consuelo   +4 more
openaire   +3 more sources

Energetic Particle Precipitation during Extreme Space Weather Events [PDF]

open access: yesE3S Web of Conferences, 2020
Here we provide a selection of extreme geomagnetic storms of the last century based on NOAA classification which lead to the energetic particle precipitation (EPP).
Yakovchuk Olesya, Mironova Irina
doaj   +1 more source

Statistical study on interplanetary drivers behind intense geomagnetic storms and substorms

open access: yesEarth and Planetary Physics, 2019
Geomagnetic storms and substorms play a central role in both the daily life of mankind and in academic space physics. The profiles of storms, especially their initial phase morphology and the intensity of their substorms under different interplanetary ...
Tian Tian   +5 more
doaj   +1 more source

Studying the Fixing Rate of GPS PPP Ambiguity Resolution Under Different Geomagnetic Storm Intensities

open access: yesSpace Weather, 2023
Global Positioning System (GPS) Precise Point Positioning (PPP) with correct fixing ambiguity resolution (AR) can reach cm‐mm level positioning accuracy. However, this accuracy can be degraded by the geomagnetic storm effects.
Xiaomin Luo   +4 more
doaj   +1 more source

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