Results 191 to 200 of about 86,801,291 (233)

Cloud-to-Ground Lightning in Malaysia: A Review Study

Applied Mechanics and Materials, 2016
Lightning has been the major cause of power interruptions in Malaysia. Malaysia is located near the equator having approximately 200 thunder days per year. It is known to be among the highest lightning activity country worldwide. TNB as the main power supply utility in Malaysia has made an effort to reduce the power interruptions via installation of ...
Chin Leong Wooi, Zulkurnain Abdul-Malek, Noor Azlinda Ahmad, Mehrdad Mokhtari, Amir Hesam Khavari   +4 more
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Cloud Seeding and Cloud-to-Ground Lightning

Journal of Applied Meteorology, 1967
Abstract During the summers of 1958 to 1962, convective clouds over a mountain range in southeastern Arizona were seeded by means of airborne silver-iodide generators. The data collected do not allow a conclusion that the seeding influenced the amount of cloud-to-ground lightning.
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The charges that are deposited by cloud‐to‐ground lightning in Florida

Journal of Geophysical Research: Atmospheres, 1986
Data from a network of electric field mills at the NASA Kennedy Space Center have been computer analyzed to determine the parameters of a charge model that describes the locations and magnitudes of the net changes in the cloud charge distribution that are caused by cloud‐to‐ground lightning.
Launa M. Maier, E. Philip Krider
openaire   +1 more source

Continuing currents in cloud-to-ground lightning discharges

Journal of Geophysical Research, 1962
About 200 excellent photographs of cloud-to-ground discharges, taken with a newly designed rotating-film camera, were obtained from very active thunderstorms in 1959 and 1960. The electric-field changes and luminosity variations of the photographed discharges were recorded simultaneously on two oscilloscopes having different time resolution.
N. Kitagawa, M. Brook, E. J. Workman
openaire   +1 more source

Characterization of positive cloud-to-ground Lightning Discharges

2010 30th International Conference on Lightning Protection (ICLP), 2010
We examined 52 positive cloud-to-ground flashes containing 63 return strokes recorded in Gainesville, Florida, in 2007-2008. The U.S. National Lightning Detection Network located 51 (96%) of the positive return strokes at distances of 7.8 to 157 km from the field measuring station and correctly identified 48 (91%) of them as cloud-to-ground discharges.
Amitabh Nag, Vladimir A. Rakov, Dimitris Tsalikis, John A. Cramer   +3 more
openaire   +1 more source

Cloud‐to‐ground lightning in Hurricane Andrew

Journal of Geophysical Research: Atmospheres, 1994
The spatial and temporal distribution of cloud‐to‐ground lightning was examined in Hurricane Andrew of 1992. Lightning locations available from the National Lightning Detection Network were superimposed on infrared satellite images to relate lightning activity to hurricane cloud structure.
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Thunder events and cloud‐to‐ground lightning frequencies

Journal of Geophysical Research: Atmospheres, 1988
Data on thunder days, thunder events (discrete periods of nearly continuous thunder), and cloud‐to‐ground lightning flashes for portions of the United States were compared to discern how well the frequencies of thunder days, events, and lightning flashes related.
S. A. Changnon, D. Changnon, Richard B. Pyle   +2 more
openaire   +1 more source

Positive cloud‐to‐ground lightning observations

Journal of Geophysical Research: Atmospheres, 1985
Cloud‐to‐ground lightning discharges have been studied for more than 50 years by means of visual, photographic, and electromagnetic observations as well as direct measurements of current. One of the first questions to be addressed was that of the sign of net effective charge transferred to earth.
openaire   +1 more source

Analysis of cloud-to-ground lightning density in Brazil

2017 International Symposium on Lightning Protection (XIV SIPDA), 2017
The importance of information on cloud-to-ground lightning density to the Brazilian society has been increasing in importance due to their use in many different applications, in particular for the Brazilian Electric Sector. However, the information needs to be precise otherwise their use in engineering application does not provide large benefits.
Ana Marotti, Osmar Pinto
openaire   +1 more source

Positive cloud to ground lightning return strokes

Journal of Geophysical Research: Oceans, 1983
Several recent papers have reported positive cloud‐to‐ground lightning, but, in our opinion, none provides sufficiently direct evidence that positive return strokes occurred in any given case. Here we present observations that plainly demonstrate the occurrence of positive return strokes in a convective thunderstorm in Florida in August 1982.
William H. Beasley, Martin A. Uman, Douglas M. Jordan, Chidambar Ganesh   +3 more
openaire   +1 more source