Results 91 to 100 of about 165,440 (288)

Magnetic location of a possible earthquake epicentre area: a mathematical model

Geomatics, Natural Hazards & Risk, 2016
We study one of the problems of the theory of seismo-electromagnetic methods of earthquake prediction, namely, the physical nature of magnetic location of a future epicentre.
O.B. Novik, S.V. Ershov, M.N. Volgin, A.O. Novik   +3 more
doaj   +1 more source

Exploring the solar system [PDF]

, 1964
Nasa programs for solar activity and radiation ...

core   +1 more source

Simultaneous Compressive Kinetic‐Scale Fluctuations and Second‐Harmonic Proton Cyclotron Waves Inside a Martian Magnetosheath Structure

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Mars directly interacts with the solar wind and hosts a complex plasma‐wave environment. Using MAVEN observations, we identify an event in the dusk‐side Martian magnetosheath where strongly compressive sub‐cyclotron kinetic‐scale fluctuations coexist with second‐harmonic proton cyclotron waves (PCWs).
Jintian Yang, Song Fu, Xiaotong Yun, Taifeng Jin, Hui Zhang, Shuyue Pang, Yuequn Lou, Longfei Jia, Yibin Zhao, Yi Qin, Binbin Ni   +10 more
wiley   +1 more source

Evaluation of a Soviet-Era Gravimetric Survey Using Absolute Gravity Measurements and Global Gravity Models: Toward the First National Geoid of Kazakhstan

Geosciences
Determining a high-precision national geoid is a fundamental step in modernizing Kazakhstan’s vertical reference system. However, the country’s vast territory, complex topography, and limited coverage of modern terrestrial and airborne gravimetric ...
Daniya Shoganbekova, Asset Urazaliyev, Roman Sermiagin, Serik Nurakynov, Magzhan Kozhakhmetov, Nailya Zhaksygul, Anel Islyamova   +6 more
doaj   +1 more source

Magnetic Signatures of a Plasma Wake Behind the Swarm Satellites

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract This study provides first observational evidence of a plasma wake behind ESA's Swarm satellites, manifesting itself by a brief magnetic field strength spike and bipolar field variations in transverse direction. These magnetic signatures occur only near the dip‐equator where the magnetic declination is close to zero.
Chao Xiong, Xinyi Rang, Hermann Lühr, Fan Yin   +3 more
wiley   +1 more source

Inverse problem in Ionospheric Science: Prediction of solar soft-X-ray spectrum from Very Low Frequency Radiosonde results

, 2015
X-rays and gamma-rays from astronomical sources such as solar flares are mostly absorbed by the Earth's atmosphere. Resulting electron-ion production rate as a function of height depends on the intensity and wavelength of the injected spectrum and ...
Chakrabarti, Sandip K., Palit, Sourav, Ray, Suman   +2 more
core   +1 more source

Observations of High‐Resolution Two‐Dimensional Ionospheric Flow Dynamics Associated With Poleward Boundary Intensifications

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Poleward boundary intensifications (PBIs) are one of the most common auroral disturbances and have been shown to play a key role in substorm dynamics. PBIs are commonly interpreted as the ionospheric signature of magnetotail reconnection, providing insight into X‐line evolution.
Katherine Davidson, Yukitoshi Nishimura, Larry Lyons, Eric Donovan, Vassilis Angelopoulos, Nozomu Nishitani   +5 more
wiley   +1 more source

Satellite based deep learning approaches for detecting environmental disasters across Kazakhstan

Discover Applied Sciences
This review synthesizes recent advances in deep learning and satellite remote sensing for environmental disaster detection, with a specific focus on Kazakhstan.
Marat Nurtas, Serik Nurakynov, Aizhan Altaibek, Aidana Mergembayeva, Mohammed Atef Mohammed   +4 more
doaj   +1 more source

VARIATIONS OF IONOSPHERIC PARAMETERS OVER ALMATY (KAZAKHSTAN) IN 1999–2013

Solar-Terrestrial Physics, 2019
The paper presents the results of a study of the behavior of ionospheric parameters of the total electron content, I(t), and electron density in the maximum F2 layer, Nm, over Almaty (Kazakhstan) [43.25° N; 76.92° E] in 1999–2013. The time interval under
Mukasheva S.N., Kapytin V.I., Malimbayev A.M.   +2 more
doaj   +1 more source

On the Strength of Solar Forcing in the Earth's Thermosphere

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract We report the signature of solar forcing in the thermosphere using daytime temperature profiles from the Michelson Interferometer for Global High‐resolution Thermospheric Imaging (MIGHTI) instrument on NASA's Ionospheric Connection (ICON) Explorer mission.
Michael H. Stevens, McArthur Jones Jr., J. Scott Evans, Brian J. Harding, Manbharat S. Dhadly, Thomas J. Immel   +5 more
wiley   +1 more source