1. TU Dresden, 29.10.07Wireless Sensor Networks1/18 Monitoring Volcanic Eruptions with a Wireless Sensor Network Vladimir Vakashinski

2. TU Dresden, 29.10.07Wireless Sensor Networks2/18 Volcanoes kill [2] Pyroclastic Flows Lahars Landslides Tsunamis Gas

3. TU Dresden, 29.10.07Wireless Sensor Networks3/18 Wired arrays of sensors [3] Indonesia, 1815 – 92000 dead, Starvation Indonesia, 1883 – 36417 dead, Tsunami Martinique, 1902 – 29025 dead, Ash Flows Columbia, 1985 – 25000 dead, Mudflows Japan, 1792 – 14300 dead, Volcano collapse, Tsunami

4. TU Dresden, 29.10.07Wireless Sensor Networks4/18 Wired arrays of sensors [1] Determine the source mechanism and location of an earthquake or explosion Study the interior structure of the volcano

5. TU Dresden, 29.10.07Wireless Sensor Networks5/18 Why do we use Wireless Sensor nodes?[1] Lower power requirements Easier to deploy Larger number of sensors over a wider area Data can be monitored in real time

6. TU Dresden, 29.10.07Wireless Sensor Networks6/18 What are the challenges? [1] Limited radio bandwidth Power management issues Signals must be synchronized

7. TU Dresden, 29.10.07Wireless Sensor Networks7/18 Background [1] Volcanic monitoring arrays and networks Scientific and monitoring goals

8. TU Dresden, 29.10.07Wireless Sensor Networks8/18 Background [1] The role of infrasound Opportunities for wireless sensor networks

9. TU Dresden, 29.10.07Wireless Sensor Networks9/18 System Design [1] System architecture

10. TU Dresden, 29.10.07Wireless Sensor Networks10/18 System Design [1] Infrasound node

11. TU Dresden, 29.10.07Wireless Sensor Networks11/18 System Design [1] Aggregator node and long-distance data transmission GPS receiver node

12. TU Dresden, 29.10.07Wireless Sensor Networks12/18 System Design [1] Time regression Physical packaging

13. TU Dresden, 29.10.07Wireless Sensor Networks13/18 Deployment Details [1] Volcan Tungurahua System deployment Data Analysis

14. TU Dresden, 29.10.07Wireless Sensor Networks14/18 Distributed Event Detection [1] Distributed Detector Design Local Detector Design

15. TU Dresden, 29.10.07Wireless Sensor Networks15/18 Evaluation [1] Energy usage Bandwidth usage Detector Accuracy

16. TU Dresden, 29.10.07Wireless Sensor Networks16/18 Conclusions and Future Work [1] Seismology presents many exciting opportunities for wireless sensor networks Expand the number of sensors in the array Distribute them over a wider aperture

17. TU Dresden, 29.10.07Wireless Sensor Networks17/18 References [1] Geoffrey Werner-Allen, Jeff Johnson, Mario Ruiz, Jonathan Lees, and Matt Welsh, Monitoring Volcanic Eruptions with a Wireless Sensor Network [2] Top 5 Ways Volcanoes Kill : www.associatedcontent.com/article/53759/top_5_ways_volcanoes_kill.html?page=2 [3] The Deadliest Volcanic Eruptions : http://www.infoplease.com/ipa/A0197833.html

18. TU Dresden, 29.10.07Wireless Sensor Networks18/18 Thank you for your attention !!!