Results 61 to 70 of about 13,690 (192)

Correlation of solar wind velocity with different parameters during geomagnetic disturbances

Bibechana, 2018
We have studied the solar wind velocity and it’s relation with solar wind pressure, southward component of IMF-Bz, solar wind temperature (Tsw), solar wind density (Nsw) and geomagnetic indices during different geomagnetic disturbances. During disturbed
Sujan Dhakal, Binod Adhikari, Kiran Pudasainee, Naryan Prasad Chapagain, Drabindra Pandit, Subodh Dahal, Bhawani Sapkota, Daya Nidhi Chhatkuli   +7 more
doaj   +3 more sources

Reconstructing the Geometry of a Hot Flow Anomaly With Bounding Jets in Magnetosheath

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract When interplanetary magnetic field discontinuities interact with planetary bow shocks, hot flow anomalies (HFAs) form in the solar wind and can extend into the magnetosheath. Here we reconstruct the three‐dimensional geometry of an HFA bounded by two jet regions in the terrestrial magnetosheath.
Yufei Zhou, Boyi Wang, Savvas Raptis, Shan Wang, Jin Guo, Jih‐Hong Shue, David Sibeck, Quanming Lu, Jiamei Zhang, Chao Shen, Rungployphan Kieokaew, C. Philippe Escoubet, Peng Shao, James Burch   +13 more
wiley   +1 more source

Effects of geomagnetic storms on cathodic protection systems in gas pipelines: A case study of disturbances in Argentina (2013-2018)

AIMS Geosciences
Gas pipelines are susceptible to telluric currents induced by temporal variations in the geomagnetic field (GMF), which are primarily driven by solar activity.
Patricia A Larocca, María A Arecco
doaj   +1 more source

First Steps Towards K Indices from South Atlantic Observatories: Port Stanley Observatory

Data Science Journal, 2011
To enhance the quality and near real time production of 'K'-based planetary magnetic activity indices, such as am, and longitude-sector indices, aλ, there is a requirement for local three-hourly 'K' index values from the South Atlantic observatory at ...
S J Reay, E Clarke, B Hamilton
doaj   +1 more source

Wavelet analysis of the ionospheric response at mid-latitudes during the April 200 storm using magnetograms and vTEC from GPS [PDF]

, 2013
In this work we pursue the idea of computing a parameter that allows us to estimate the local ionospheric response to a geospheric event that triggers an ionospheric storm. For that, wavelet technique has been chosen because of its ability to analyze non-
Fernandez, Laura Isabel, Meza, Amalia Margarita, Van Zele, Maria Andrea   +2 more
core  

Geoeffectiveness and efficiency of CIR, Sheath and ICME in generation of magnetic storms

, 2011
We investigate relative role of various types of solar wind streams in generation of magnetic storms. On the basis of the OMNI data of interplanetary measurements for the period of 1976-2000 we analyze 798 geomagnetic storms with Dst < -50 nT and their ...
Akasofu, Alves, Alves, Borovsky, Borovsky, Burlaga, Burton, Cane, D'Amicis, Denton, Despirak, Despirak, Dmitriev, Dungey, Echer, Echer, Echer, Fairfield, Gonzalez, Gonzalez, Gonzalez, Guo, Huttunen, Huttunen, Huttunen, I. G. Lodkina, Jian, Khabarova, King, Koskinen, Lepping, Longden, Lopez, M. Y. Yermolaev, Mustajab, N. S. Nikolaeva, Nikolaeva, Nikolaeva, Plotnikov, Pulkkinen, Pulkkinen, Richardson, Rostoker, Russell, Thatcher, Tsurutani, Tsurutani, Turner, Weigel, Xu, Y. I. Yermolaev, Yermolaev, Yermolaev, Yermolaev, Yermolaev, Yermolaev, Yermolaev, Yermolaev, Yermolaev, Yermolaev, Yermolaev, Yermolaev, Yermolaev, Zhang   +63 more
core   +1 more source

Statistical Characteristics of Stormtime Bursty Bulk Flows

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Bursty bulk flows (BBFs) play a significant role in transporting plasma earthward in the magnetotail. While their properties have been extensively studied, their behavior during geomagnetic storms needs further understanding. In this study, we investigate the stormtime characteristics of BBFs, and compare them to non‐stormtime, by performing a
Anusree P. Devanandan, Amy Keesee, Savvas Raptis, Shinichi Ohtani, Viacheslav Merkin, Matina Gkioulidou   +5 more
wiley   +1 more source

Dawn‐Side Anomaly in Sudden Geomagnetic Field Responses to Solar Wind Pressure Discontinuities During the 10 May and 10 October 2024 Geomagnetic Storms

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Interactions of solar wind dynamic pressure (SWDP) discontinuities with Earth's magnetosphere cause geomagnetic Sudden Commencements (SCs). Typically, positive/negative SCs occur at low latitudes due to enhancements/reductions in SWDP.
Deeksha Rai, S. Tulasi Ram, B. Nilam, D. M. Oliveira, B. Remya, Anil Raghav, D. Chakrabarty, Abhishek Kumar, Shivam Parashar, Vipin K. Yadav, A. P. Dimri   +10 more
wiley   +1 more source

Uncovering the Generation Mechanism of Low‐Frequency Chorus Waves (<0.1 fce_eq ${\boldsymbol{f}}_{\mathbf{c}\mathbf{e}\mathbf{\_}\mathbf{e}\mathbf{q}}$) During Active Geomagnetic Environments

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Low‐frequency chorus waves (below 0.1 fce_eq ${f}_{\text{ce}\_\text{eq}}$, where fce_eq ${f}_{\text{ce}\_\text{eq}}$ is equatorial electron gyrofrequency) can induce the depletion of relativistic electrons in Earth's radiation belts by effective pitch angle scattering, demonstrating distinct effects on radiation belt dynamics compared to ...
Xuan Zhou, Xinliang Gao, Dedong Wang, Jiuqi Ma, Quanming Lu   +4 more
wiley   +1 more source

Effects of the May 2024 Solar Storm on the Earth's Radiation Belts Observed by CALET on the International Space Station

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract In May 2024, extraordinary solar activity triggered a powerful solar storm, impacting Earth and producing the extreme geomagnetic storm of 10‐11 May, the most intense since 2003. This had significant effects on the magnetosphere, leading to the creation of a new long‐lasting component of relativistic electrons and to flux changes in the South ...
A. Ficklin, A. Bruno, L. Blum, N. Cannady, T. G. Guzik, R. Kataoka, K. Munakata, Y. Akaike, S. Torii   +8 more
wiley   +1 more source