Explorations in the design of a multisensor system for seismic and geodetic monitoring of volcanoes

• Main Author: Akshat Dave
• Other Authors: Wong Kai Juan, Steven
• Format: Final Year Project
• Language: English
• Published: 2012
• Subjects: DRNTU::Engineering::Computer science and engineering::Computer applications::Physical sciences and engineering; DRNTU::Science::Geology::Volcanoes and earthquakes
• Online Access: http://hdl.handle.net/10356/48532
• Institution: Nanyang Technological University

Volcanic eruptions can be one of the most sudden and shocking agents of change. The eruption of Mt. Tambora, Indonesia in 1815 affected global climate, agriculture and eventually world economy. The “Year without a summer” reminds us how such events can instantaneously claim over 71, 000 people’s lives and change the face of the earth. To prevent unexpected damage and loss of precious human life, volcanic phenomena are monitored. A major issue in sensing technologies is its high cost. Thus, we work towards providing a low-cost, robust and low-power multisensor system. Our system is aimed at near crater deployment for continuous monitoring. This report specifically covers exploration into low-cost photogrammetric methods that may be applicable to geodetic sensing. In addition, a seismic monitoring system is also designed for integration into the multisensor system. The explorations show that the photogrammetric system can be used to detect changes of ~5cm at a distance of >75 metres. Furthermore the processing is independent of camera resolution meaning that better cameras will lead to better accuracy. This provides the power to choose the level of performance for sensing. The seismic monitoring system showed great potential for being used in the multisensor system, being able to detect seismic waves between 2 Hz and 50 Hz.