2002
The temperature in the environment or in
termite nests affects the termite activities.
In order to evaluate the effects of temperature
on the activity of Coptotermes formosanus SHIRAKI, acoustic emission (AE) monitoring was applied
to the nest under the bathroom. Temperatures
were continuously measured for about one
year using thermocouples at four points,
the centre of the nest, the periphery of
the nest, the environment around the nest,
and the underground. AEs were detected at
the centre of nest and at the wooden construction
member near the nest in the wooden house.
The nest was periodically stimulated by drawing
and inserting the wave-guides.
 Fig. 1. AE monitoring and temperature measurements of nest in the underground nest under a wooden house. |
 Fig. 2. Relationships between AEs and temperatures in the underground nest under a house. Arrows show the stimulation by drawing and inserting the pole inserted from the floor of bathroom. |
 Fig. 3. Relationships between AEs and stimulations in the underground nest. Arrows show the stimulation by drawing and inserting the pole inserted from the floor of bathroom. |