Results 11 to 20 of about 56,703 (218)

PDCD-DAT – a global database of pyroclastic density current deposit field data [PDF]

Journal of Applied Volcanology
Pyroclastic density currents represent one of the deadliest hazards posed by active volcanoes. Analysis of their deposits provides valuable insights into their internal dynamics and informs numerical simulations of pyroclastic density currents which ...
Joshua Brown, Rebecca Williams, Sarah Ogburn, Brittany Brand, Eric C. P. Breard, Sylvain Charbonnier, Natasha Dowey, Josef Dufek, Mark Jellinek, Ulrich Kueppers, Gert Lube, Pete Rowley   +11 more
doaj   +2 more sources

SF₆ High-Voltage Circuit Breaker Contact Status Detection at Different Currents

Sensors, 2022
Currently, the online non-destructive testing (NDT) methods to measure the contact states of high-voltage circuit breakers (HVCBs) with SF6 gas as a quenching medium are lacking.
Ze Guo, Linjing Li, Weimeng Han, Zixuan Guo   +3 more
doaj   +1 more source

Comparison of Birkeland current observations during two magnetic cloud events with MHD simulations [PDF]

Annales Geophysicae, 2008
Low altitude field-aligned current densities obtained from global magnetospheric simulations are compared with two-dimensional distributions of Birkeland currents at the topside ionosphere derived from magnetic field observations by the constellation ...
H. Korth, B. J. Anderson, J. G. Lyon, M. Wiltberger   +3 more
doaj   +1 more source

Glutamate transporter function of rat hippocampal astrocytes is impaired following the global ischemia

Neurobiology of Disease, 2005
Astroglial glutamate transporters, GLT-1 and GLAST, play an essential role in removing released glutamate from the extracellular space and are essential for maintaining a low concentration of extracellular glutamate in the brain. It was hypothesized that
Tu-Hsueh Yeh, Hwa-Min Hwang, Jin-Jung Chen, Tony Wu, Allen H. Li, Hung-Li Wang   +5 more
doaj   +1 more source

First-principles modeling of geomagnetically induced electromagnetic fields and currents from upstream solar wind to the surface of the Earth [PDF]

Annales Geophysicae, 2007
Our capability to model the near-space physical phenomena has gradually reached a level enabling module-based first-principles modeling of geomagnetically induced electromagnetic fields and currents from upstream solar wind to the surface of the Earth.
A. Pulkkinen, A. Pulkkinen, M. Hesse, M. Kuznetsova, L. Rastätter, L. Rastätter   +5 more
doaj   +1 more source

Dynamic Downscaling of the Impact of Climate Change on the Ocean Circulation in the Galápagos Archipelago

Advances in Meteorology, 2013
The regional impact of global climate change on the ocean circulation around the Galápagos Archipelago is studied using the Hybrid Coordinate Ocean Model (HYCOM) configured for a four-level nested domain system.
Yanyun Liu, Lian Xie, John M. Morrison, Daniel Kamykowski   +3 more
doaj   +1 more source

Mesoscale ionospheric electrodynamics of omega bands determined from ground-based electromagnetic and satellite optical observations [PDF]

Annales Geophysicae, 2005
We present ground-based electromagnetic data from the MIRACLE and BEAR networks and satellite optical observations from the UVI and PIXIE instruments on the Polar satellite of an omega band event over Northern Scandinavia on 26 June 1998, which ...
O. Amm, A. Aksnes, J. Stadsnes, N. Østgaard, N. Østgaard, R. R. Vondrak, G. A. Germany, G. Lu, A. Viljanen   +8 more
doaj   +1 more source

Holocene sediment source analysis and paleoclimatic significance of core KZK01 from the eastern part of the Beibu Gulf

Frontiers in Earth Science, 2023
Identifying the sources of sediments is of great significance in reconstructing Holocene paleoclimate evolution in the Beibu Gulf and in understanding the characteristics of regional responses to changes in global climate.
Dingyong Liang, Dingyong Liang, Dingyong Liang, Guoqiang Xu, Guoqiang Xu, Fanglei Gao, Ling Wen, Ling Wen, Liyun Jia, Li Liu, Dongfeng Jiao, Chaoyun Yang, Shuzhuang Wu   +12 more
doaj   +1 more source

Assessing the potential impact of assimilating total surface current velocities in the Met Office’s global ocean forecasting system

Frontiers in Marine Science
Accurate prediction of ocean surface currents is important for marine safety, ship routing, tracking of pollutants and in coupled forecasting. Presently, velocity observations are not routinely assimilated in global ocean forecasting systems, largely due
Jennifer Waters, Matthew J. Martin, Michael J. Bell, Robert R. King, Lucile Gaultier, Clément Ubelmann, Craig Donlon, Simon Van Gennip   +7 more
doaj   +1 more source

Hizb ut-Tahrir’s Caliphal Counter-Narrative

Religions, 2021
The article has a history of religions approach, and analyzes the “counter-narrative” of Hizb ut-Tahrir, which is a global political Islamist group which aims to establish a universal caliphate. It is a “vocal radical” radical group, rejecting the use of
Susanne Olsson
doaj   +1 more source