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Weather detector

Simione Haravanua
Tuesday, February 27, 2018

THE University of the South Pacific's Emalus campus in Vanuatu is equipped with a very low frequency (VLF) signal receiver to detect changes during earthquakes and tropical cyclones.

The equipment was installed earlier at the Laucala campus in Fiji and the Alafua campus in Samoa.

This was a result of a research project called Investigations of 'Sea State and Upper Atmosphere during Earthquakes (EQs) and Tropical Cyclones (TCs) in the South Pacific Region'.

The VLF system consists of a short (2.5 metre) whip antenna (plastic tube and wire taped along the tube), pre-amplifier fixed at the bottom of the whip antenna, and VLF service unit (SU), coupled with preamplifier.

It can record up to seven VLF transmitter signals such as from Australia (19.8 kHz), Japan (22.2 kHz), Hawai (21.4 kHz), India (18.2 kHz) and USA (24.8 kHz), and so forth covering a wide area around the receiving stations for scientific research.

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