Tuesday, August 04, 2009

Changes in VLF radiowaves in ionosphere observed during TSE

Mumbai (PTI): Significant changes in the lowest part of earth-ionosphere have been observed by the scientists from the Indian Institute of Geomagnetism (IIG) who conducted experiments on Very Low Frequency (VLF) radiowaves for the first time during Total Solar Eclipse (TSE) on July 22.
The scientists monitored very low frequency (VLF) radiowaves travelling long distances through the earth-ionosphere wave guide and found increase in VLF signal strength during TSE at around 50 to 60 kms above the earth.
The IIG Scientists campaigned to record at Allahabad, Varanasi, and Nainital, VLF radio wave signals transmitted from Japan, Australia and a place near Tirunelveli in Tamil Nadu, using special receivers, its Director Dr Archana Bhattacharyya said.
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