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VolcanoSRI: 4D Volcano Seismic Tomography in a Large-scale Sensor Network

VolcanoSRI: 4D Volcano Seismic Tomography in a Large-scale Sensor Network. WenZhan Song, Ph.D. Associate Professor Director of Sensorweb Research Lab Department of Computer Science Georgia State University. VolcanoSRI: Volcano Seismic Realtime Imaging.

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VolcanoSRI: 4D Volcano Seismic Tomography in a Large-scale Sensor Network

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  1. VolcanoSRI: 4D Volcano Seismic Tomography in a Large-scale Sensor Network WenZhan Song, Ph.D. Associate Professor Director of Sensorweb Research Lab Department of Computer Science Georgia State University

  2. VolcanoSRI: Volcano Seismic Realtime Imaging • VolcanoSRI: Volcano Seismic Realtime Imaging • * make the fictional holographic projector “Virgil” in Supervolcano film a reality: http://www.youtube.com/watch?v=WF-RKzqNtz0 (3:49) NSF CDI($1.83M 2011-2015): VolcanoSRI: 4D Volcano Tomography in a Large-scale Sensor Networks (PI: Song (GSU), Co-PI: Lees (UNC), Xing (MSU)). http://sensorweb.cs.gsu.edu/research/VolcanoSRI.html

  3. VolcanoSRI: Vigil in Supervolcano Film

  4. VolcanoSRI: Volcano Seismic Realtime Imaging The tentative deployment map at Ecuador

  5. Instrumentation

  6. Tomographic Inversion • n – number of nodes in the network • m – dimension of tomography; thus the size of tomography model is m3 A nxm3 s m3x1 t nx1 In VolcanoSRI, n =500, m = 500, although each row Ai is very sparse. = node i Each node i only has Ai and ti, e.g., the i-th row info in A and t. All nodes together to find s such that ||As-t|| is minimized. s is the 3D velocity model and can be very big (e.g., 500x500x500, if m=500). Here, A is just illustrated as the matrix for one EQ event only. There will be many EQ events and EQ event is processed one after another.

  7. Multi-resolution Evolving Tomography

  8. Vertical Tomograph Partition

  9. Accuracy

  10. Robustness

  11. Communication Cost

  12. Oilfield Explorations http://www.forbes.com/2004/10/04/cx_af_1004oilimaging.html

  13. Thanks for listening! Thank you! Questions or Comments? Dr. WenZhan Song wsong@gsu.edu (404)413-5734 More information: http://sensorweb.cs.gsu.edu Sensorweb Service Portal Sensor Web: Connecting Dots for Intelligence

  14. Space In-situ Sensor Web NASA project ($1.6M 2007-2009): Optimized Autonomous Space In-situ Sensorweb. Collaborative project between WSU, USGS and JPL (PI: Song, Co-I: Shirazi, LaHusen, Kedar, Chien, Webb). NASA Video: http://sensorweb.cs.gsu.edu/news.html Project website: http://sensorweb.cs.gsu.edu/research/oasis.html

  15. omnidirectional antenna GPS antenna air-drop hook ash detector seismic sensor - iMote2 and accessories- infrasonic sensors- air-alkaline batteries

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