scholarly journals ELF and VLF signatures of sprites registered onboard the low altitude satellite DEMETER

2009 ◽  
Vol 27 (6) ◽  
pp. 2599-2605 ◽  
Author(s):  
J. Błęcki ◽  
M. Parrot ◽  
R. Wronowski
Keyword(s):  
Thunderstorm Activity ◽  
Whistler Wave ◽  
Night Time ◽  
Burst Mode ◽  
The Earth ◽  
Low Latitudes ◽  
Wave Forms ◽  
Low Altitude ◽  
Vlf Emissions ◽  
Cg Lightning

Abstract. We report the observation of ELF and VLF signature of sprites recorded on the low altitude satellite DEMETER during thunderstorm activity. At an altitude of ~700 km, waves observed on the E-field spectrograms at mid-to-low latitudes during night time are mainly dominated by up-going 0+ whistlers. During the night of 20 July 2007 two sprites have been observed around 20:10:08 UT from the observatory located on the top of the mountain Śnieżka in Poland (50°44'09" N, 15°44'21" E, 1603 m) and, ELF and VLF data have been recorded by the satellite at about 1200 km from the region of thunderstorm activity. During this event, the DEMETER instruments were switched in the burst mode and it was possible to register the wave forms. It is shown that the two sprites have been triggered by two intense +CG lightning strokes (100 kA) occurring during the same millisecond but not at the same location. Despite the distance DEMETER has recorded at the same time intense and unusual ELF and VLF emissions. It is shown that the whistler wave propagates from the thunderstorm regions in the Earth-ionosphere guide and enters in the ionosphere below the satellite. They last several tens of milliseconds and the intensity of the ELF waveform is close to 1 mV/m. A particularly intense proton whistler is also associated with these emissions.

The nonlinear interaction of the whistler wave with the inertial alfven wave in the magnetosphere of the Earth

2002 ◽  
Vol 8 (5-6) ◽  
pp. 96-101
Author(s):  
V.N. Fedun ◽  
◽  
A.K. Yukhimuk ◽  
A.D. Voitsekhovska ◽  
О.К. Cheremnykh ◽  
...  
Keyword(s):  
Nonlinear Interaction ◽  
Whistler Wave ◽  
Alfven Wave ◽  
Inertial Alfvén Wave ◽  
The Earth

scholarly journals The effect of climatic and geographical factors on breast cancer in Iran

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Zohreh Maryanaji
Keyword(s):  
Breast Cancer ◽  
Environmental Factors ◽  
Solar Radiation ◽  
Total Solar Radiation ◽  
Electromagnetic Spectrum ◽  
Health It ◽  
Northern Latitudes ◽  
Low Latitudes ◽  
Low Altitude ◽  
Radiation Angle

Abstract Objective By studying the effect of environmental factors on health, it is clear that geographical, climatic and environmental factors have a significant impact on human health. This study, based on the data of the patients with breast cancer in Iran since 2010 to 2014 and using the statistical methods has determined the effect of geographical features of Iran (solar radiation status, radiation angle) on the frequency and distribution of this disease. Results The maximum amount of total solar radiation occurs in the vicinity (surrounding) of the tropic of cancer, which covers some parts of the south of Iran and in the atmosphere of the northern latitudes of Iran. The amount of humidity and cloudiness is more than the southern latitudes, which causes more reflection of short waves of the sun during the day. Findings showed that the rate of breast cancer in low latitudes is higher than high latitudes. It was also found that with increasing longitude, the rate of cancer increases significantly due to the high thickness of the atmosphere and receiving more sunlight in the electromagnetic spectrum, as well as dry air and low water vapor in low altitude areas of eastern and southeastern Iran.

Beneath Raven Moon by D. Bouchard

2012 ◽  
Vol 2 (3) ◽  
Author(s):  
Kristie Oxley
Keyword(s):  
Young People ◽  
First Nations ◽  
Oral Traditions ◽  
Read Aloud ◽  
Background Information ◽  
Flute Music ◽  
Night Time ◽  
Creation Myth ◽  
The Earth ◽  
Auditory Experience

Bouchard, David. (2012). Beneath Raven Moon. North Vancouver, BC: More Than Words Publishers. Print and CD. Trickster Raven is at it again in Beneath Raven Moon, a creation myth taken from the tradition of the Kwakwaka’wakw people of British Columbia. Metis author David Bouchard weaves together the enchanting tale of how keen-eyed Eagle and whimsical Raven conspire to create a love match between two young people with the story of how the Earth was given Grandmother Moon. Each page is beautifully illustrated with West Coast First Nation’s designs in the dark golds, silvers, blues and oranges of nighttime. Bouchard sets a quiet, ethereal tone for the text through carefully-paced repetition and descriptions of night time scenes. The use of playful dialogue, traditional terms such as Grandmother Moon or Grandfather Cedar and Bouchard’s placement of Trickster as a force in many aboriginal cultures enhances the timeless feeling of the text. Beneath Raven Moon derives its authenticity from its Metis author and K’omoks First Nations illustrator. Source notes are background information that places this myth in the tradition of the Kwakwaka’wakw people from BC’s Inside Passage. Each page contains both English and Kwakwala text, with the Kwakwala translation attributed to Pauline and Pewi Alfred. In keeping with First Nations' oral traditions, a CD of the story read aloud in English, Kwakwala and French is included with the book. The CD also features the haunting First Nations flute music of Mary Youngblood. Students aged eight to twelve will enjoy the visual and auditory experience of Beneath Raven Moon. Recommended: 3 out of 4 stars Reviewer: Kristie Oxley Kristie Oxley is an elementary Montessori teacher at Richard McBride Elementary School in New Westminster, BC.

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