نتایج جستجو برای: they produce lightning
تعداد نتایج: 1269572 فیلتر نتایج به سال:
[1] Published research has suggested that urban and agricultural activities in central Arizona may be enhancing monsoonal precipitation in the region; therefore, this study employed cloud-to-ground lightning data and topographic data to reveal spatially anomalous zones of lightning activity in central Arizona. A multiple linear regression model with topographic variables as predictors explained...
Iron and manganese are relevant constituents of the earth's crust and both show increasing mobility when reduced by free electrons. This reduction is known to be controlled by microbial dissimilation processes. Alternative sources of free electrons in nature are cloud-to-ground lightning events with thermal and galvanic effects. Where thermal effects of lightning events are well described, less...
Estimates of lightning NOx production from GOME satellite observations K. F. Boersma, H. J. Eskes, E. W. Meijer, and H. M. Kelder Royal Netherlands Meteorological Institute, De Bilt, The Netherlands Received: 17 February 2005 – Accepted: 4 April 2005 – Published: 13 May 2005 Correspondence to: K. F. Boersma ([email protected]) © 2005 Author(s). This work is licensed under a Creative Commons License.
Lightning is one of the major threats to multimegawatt wind turbines and a concern for modern aircraft due to the use of lightweight composite materials. Both wind turbines and aircraft can initiate lightning, and very favorable conditions for lightning initiation occur in winter thunderstorms. Moreover, winter thunderstorms are characterized by a relatively high production of very energetic li...
All is not well with agriculture in Southeast Asia. The productivity gains of the Green Revolution have slowed and even reversed and environmental problems and shortages of water and land are evident. At the same time changing world markets are shifting the dynamics of national agricultural economies. But from the point of view of farmers themselves, it is their season-to-season economic surviv...
Due to the ever-increasing use of Distributed Generations (DGs), and special attentions toward wind power plants in recent years, this research investigates the wind plants from the viewpoint of lightning protection. In comparison to all other type of generators connected to the electric power systems, wind turbine generators are placed in areas which are more likely to be stricken by lightning...
This paper presents an evaluation and comparison of four input devices for percussion tasks: a standard tom drum, Roland V-Drum, and two established examples of gestural controllers: the Buchla Lightning II, and the Radio Baton. The primary goal of this study was to determine how players’ actions changed when moving from an acoustic instrument like the tom drum, to a gestural controller like th...
Lightning rod is widely used in lightning protection systems. It is of practical interest to analyze the protective performance of a lightning rod taking into consideration some stochastic behaviors of the lightning process. The effectiveness of a single lightning rod is investigated in this paper using a fractal growth approach based on dielectric breakdwon model (DBM). The effective intercept...
Lightning flashes are known to initiate in regions of strong electric fields inside thunderstorms, between layers of positively and negatively charged precipitation particles. For that reason, lightning inception is typically hidden from sight of camera systems used in research. Other technology such as lightning mapping systems based on radio waves can typically detect only some aspects of the...
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