Sensors
ERLAWS consists of 3 sites at which various sensors are located - these are:
- Site 1 (Crater Lake outlet)
- three geophones to detect the vibration of the collapse and from lahars
- a buried tripwire to detect collapse of the dam
- water level sensors to detect a sudden drop in lake level
- Site 2 (NZ Alpine Club hut)
- two geophones to detect the vibration from passing lahars
- Site 3 (near Tukino skifield)
- two geophones to detect the vibration from passing lahars.
Read more about this topic: Eastern Ruapehu Lahar Alarm And Warning System