Results 41 to 50 of about 765 (188)

Global Ionospheric TEC Variability: Long‐Term Spectral–Wavelet Analysis and Geomagnetic Storm Event Case Studies

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract This study investigates global ionospheric variability using Global Total Electron Content (GTEC), defined as the spatial average of daily averaged Global Ionospheric Maps derived from the International GNSS Service. The analysis spans from 2010 to 2024, covering Solar Cycle 24 and the rising phase of Solar Cycle 25, and incorporates ...
Ramadane Hamed Linjouom Nsangou, Y. Reuveni   +1 more
wiley   +1 more source

Hiss Wave Evolution During Substorms Based on Van Allen Probes Observations

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Hiss waves frequently occur in the plasmasphere or plumes, playing a key role in energetic electron loss in the Earth's inner magnetosphere. While previous studies have linked hiss wave enhancements in the outer plasmasphere (just inside the plasmapause) to electron injections during substorms, their evolution across various substorm phases ...
Xiao‐Chen Shen, Wen Li, Qianli Ma, Nigel P. Meredith, Xiangning Chu, Murong Qin, Luisa Capannolo, Sheng Huang   +7 more
wiley   +1 more source

Data for: A Topology-based Single-Pool Decomposition Framework for Large-Scale Global Optimization

, 2019
SPDF-based methods.rar contains the MATLAB implementation of the SPDG and the TSPDG ...
kai, Z
core   +2 more sources

Enhancing Low‐Latitude Ionospheric Irregularity Prediction With Generalized Linear Models

Space Weather, Volume 24, Issue 3, March 2026.
Abstract The ionosphere poses challenges for accurate forecasting due to its complexity and variability. Irregularities in the lower ionosphere are influenced by local time, season, geographic location, solar activity and space weather, complicating precise predictions.
Alysson Brhian, Marco A. Ridenti, Francisco Azpilicueta, Mauricio Gende, Marisa Roberto   +4 more
wiley   +1 more source

Microseisms Generated by Super Typhoon Megi in the Western Pacific Ocean [PDF]

, 2017
Microseisms generated by the super typhoon Megi (13-24 October 2010) were detected on both land-based and island-based seismic stations. We applied temporal frequency spectrum analysis to investigate the temporal evolution of the microseisms.
Lin, JM, Xu, M, Lin, Jian, Jian Lin, Min Xu, Xu, Min, Lin, Jianmin, Jianmin Lin, Lin, J   +8 more
core   +1 more source

The Evolution of a Polar Cap Patch Into a Blob in the Nightside Ionosphere: Direct Observations of Multiple Blob Formation Mechanisms Acting Simultaneously on the Same Plasma

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract A polar cap patch was observed to exit the polar cap to become a blob as it entered the auroral oval on the nightside of the Earth under moderately quiet geomagnetic conditions (Kp = 3−). Auroral particle precipitation led to an increase in the electron density of the blob.
S. J. Maguire, A. G. Wood, D. R. Themens, E. M. Henley, S. E. Milan, Y. Soobiah, K. Oksavik, W. J. Miloch, J. C. Coxon, M. G. Johnsen   +9 more
wiley   +1 more source

MODEL MATEMATIKA PENYEBARAN PEROKOK ORDE-FRAKSIONAL MENGGUNAKAN METODE PERTUBASI HOMOTOPI [PDF]

, 2017
Dalam skripsi ini dibahas model penyebaran perokok dalam bentuk Sistem Persamaan Differensial Fraksional non linier (SPDF) yang dimodifikasi dari Sistem Persamaan Differensial Biasa non linier (SPDB). Metode yang digunakan untuk menyelesaikan SPDF adalah
HELIDA NORA ARISKA, 081211231003
core  

Energy Partition at a Collisionless Supercritical Quasi‐Parallel Shock

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Shocks in collisionless astrophysical plasmas redistribute some of the incident flow energy into both thermal and non‐thermal energy. Quantifying the partition of that energy amongst various particle species or their sub‐populations, and electromagnetic energy, represents a fundamental goal of shock physics.
Steven J. Schwartz, Karlheinz J. Trattner, Savvas Raptis, Robert E. Ergun, Lynn B. Wilson III, Roman G. Gomez, Ian J. Cohen, Daniel J. Gershman, Katherine A. Goodrich, Harald Kucharek, Tien Vo   +10 more
wiley   +1 more source

Frequency Dependent Microseisms Sources: A Case Study in Oregon

Geophysical Research Letters
The origin of microseisms—whether from deep‐ocean sources or coastal reflections—has been debated for decades. In this study, we use Distributed Acoustic Sensing (DAS) and Ocean Bottom Seismometer data collected offshore Oregon to investigate microseisms
Han Xiao, Toshiro Tanimoto, Zack J. Spica, Frederik Tilmann   +3 more
doaj   +1 more source

Enhancing Social Studies Learning Outcomes in Elementary Classrooms through Audiovisual Media: A Classroom Action Research

Journal of Studies in Elementary Education
Background: Social Studies learning in elementary classrooms often remains below the expected standard when teaching is dominated by lectures and minimal instructional media.
Sumarsono, Fajar Setiawan
doaj   +1 more source