Volcano SRI 4 D Volcano Seismic Tomography in

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

Volcano. SRI: Volcano Seismic Realtime Imaging Volcano. SRI: Volcano Seismic Realtime Imaging * make the fictional holographic projector “Virgil” in Supervolcano film a reality: http: //www. youtube. com/watch? v=WF-RKzq. Ntz 0 (3: 49) NSF CDI($1. 83 M 2011 -2015): Volcano. SRI: 4 D Volcano Tomography in a Large-scale Sensor Networks (PI: Song (GSU), Co-PI: Lees (UNC), Xing (MSU)). http: //sensorweb. cs. gsu. edu/research/Volcano. SRI. html Sensorweb Research Laboratory -2 - Georgia State University

Volcano. SRI: Sensorweb Research Laboratory Vigil in Supervolcano Film -3 - Georgia State University

Volcano. SRI: Volcano Seismic Realtime Imaging The tentative deployment map at Ecuador Sensorweb Research Laboratory -4 - Georgia State University

Instrumentation Sensorweb Research Laboratory -5 - Georgia State University

Tomographic Inversion n – number of nodes in the network m – dimension of tomography; thus the size of tomography model is m 3 A s nxm 3 m 3 x 1 node i = t nx 1 In Volcano. SRI, n =500, m = 500, although each row Ai is very sparse. 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 3 D velocity model and can be very big (e. g. , 500 x 500, 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. Sensorweb Research Laboratory -6 - Georgia State University

Multi-resolution Evolving Tomography Sensorweb Research Laboratory -7 - Georgia State University

Vertical Tomograph Partition Sensorweb Research Laboratory -8 - Georgia State University

Accuracy Sensorweb Research Laboratory -9 - Georgia State University

Robustness Sensorweb Research Laboratory -10 - Georgia State University

Communication Cost Sensorweb Research Laboratory -11 - Georgia State University

Oilfield Explorations http: //www. forbes. com/2004/10/04/cx_af_1004 oilimaging. html Sensorweb Research Laboratory -12 - Georgia State University

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

Space In-situ Sensor Web NASA project ($1. 6 M 2007 -2009): Optimized Autonomous Space In-situ Sensorweb. Collaborative project between WSU, USGS and JPL (PI: Song, Co-I: Shirazi, La. Husen, Kedar, Chien, Webb). NASA Video: http: //sensorweb. cs. gsu. edu/news. html Project website: http: //sensorweb. cs. gsu. edu/research/oasis. html Sensorweb Research Laboratory -14 - Georgia State University

omnidirectional antenna GPS antenna air-drop hook ash detector seismic sensor - i. Mote 2 and accessories - infrasonic sensors - air-alkaline batteries Sensorweb Research Laboratory -15 - Georgia State University