Results 111 to 120 of about 45,334 (191)

Reference Question Data Mining A Systematic Approach to Library Outreach [PDF]

, 2010
This exploratory study investigates the feasibility of using reference questions as an important tool in the construction of study guides, instructional outreach, and collection development at a small, four-year university in Lake Charles, Louisiana. The
Finnell, Joshua
core  

Amphibole's Influence on Mid‐Lithosphere Discontinuity: Insights From Electrical Conductivity

Geophysical Research Letters
The potential role of metasomatism‐induced hydrated layers, such as amphibole, in causing the mid‐lithospheric discontinuities (MLDs) has been widely debated.
Kewei Shen, Duojun Wang, Rui Zhang, Guangchao Chen, Kenan Han, Peng Chen, Ruixin Zhang, Zhiqing Zhang   +7 more
doaj   +1 more source

Significant Plasma Density Depletion From High‐ to Mid‐Latitude Ionosphere During the Super Storm in May 2024

Geophysical Research Letters
We demonstrate the global response of the ionosphere to the geomagnetic super storm on 10–11 May 2024. The in situ observations from the Swarm spacecraft show a rapid depletion of plasma density in the dawn and dusk sectors following the storm.
Yaqi Jin, Daria Kotova, Lasse B. N. Clausen, Wojciech J. Miloch   +3 more
doaj   +1 more source

Land‐Air Exchanges of Various Gaseous Nitrogen Species in an Urban Wetland Based on In Situ Flux Observations

Geophysical Research Letters
Wetlands are universally recognized as hotspots for nitrogen cycling and gaseous nitrogen emissions. In this study, the fluxes of nitric oxide (NO), nitrogen dioxide (NO2), ammonia (NH3), and nitrous oxide (N2O) were observed seasonally in the mud and ...
Qian Yu, Zimeng Zhang, Piaopiao Ke, Jiale Chang, Han Li, Wenjia Wang, Lei Duan, Ronghua Kang, Lei Zhang, Yu Zhao   +9 more
doaj   +1 more source

Atmospheric Consequences of Cosmic Ray Variability in the Extragalactic Shock Model [PDF]

, 2018
It has been suggested that galactic shock asymmetry induced by our galaxy's infall toward the Virgo Cluster may be a source of periodicity in cosmic ray exposure as the solar system oscillates normal to the galactic plane, thereby inducing an observed ...
Murray, Michael J., Melott, Adrian L., Krejci, Alex J., Medvedev, Mikhail V., Wilson, Graham W., and Murray, Michael J.
core   +1 more source

Electron Beams Generated by the Electron Kelvin‐Helmholtz Instability at a Quasi‐Perpendicular Shock

Geophysical Research Letters
Electron beams are considered to be important free energy sources for the excitation of various plasma waves at quasi‐perpendicular shocks. In this article, we perform a two‐dimensional particle‐in‐cell simulation of a low‐plasma‐β quasi‐perpendicular ...
Ao Guo, Quanming Lu, San Lu, Xinliang Gao, Zhongwei Yang   +4 more
doaj   +1 more source

Simulation studies of the imaging atmospheric cherenkov technique using the Durham mark 6 and H.E.S.S. stand-alone telescopes [PDF]

, 2002
The subject of this thesis is the simulation study of the development of extensive air show ers produced by very high energy gamma-ray and hadronic cosmic rays with respect to the Cherenkov light they produce, and its imaging in ground based telescopes ...
Nolan, Sam Joffre
core  

Gradually Disappearing Cross‐Seasonal Teleconnection Between ENSO and Tibetan Plateau Upper‐Level Westerlies

Geophysical Research Letters
Changes in the Tibetan Plateau upper‐level westerlies (TPUW) and El Niño‐Southern Oscillation (ENSO) are crucial in regulating local hydrological cycles and large‐range climate.
Lifei Lin, Chundi Hu, Chengyang Zhang, Dake Chen   +3 more
doaj   +1 more source

Physical properties of meteorites and their role in planetology [PDF]

, 2009
Together with cosmic spherules, interplanetary dust particles and lunar samples returned by Apollo and Luna missions, meteorites are the only source of extraterrestrial material on Earth.
Kohout, Tomas
core  

The impact of SSC on high-latitude HF communications [PDF]

, 2009
EThOS - Electronic Theses Online ServiceGBUnited ...
Ritchie, Samuel Esteban
core