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Recent Progress on Acoustic Remote Sensing of Volcanoes

Recent Progress on Acoustic Remote Sensing of Volcanoes. Milton A. Garces, Infrasound Laboratory, University of Hawaii, Manoa Representing the International Infrasound Consortium (IIC).

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Recent Progress on Acoustic Remote Sensing of Volcanoes

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  1. Recent Progress on Acoustic Remote Sensing of Volcanoes Milton A. Garces, Infrasound Laboratory, University of Hawaii, Manoa Representing the International Infrasound Consortium (IIC) Presented at the Workshop on Volcanic Ash Hazards to Aviation in Latin America. January 26, 2006, Quito, Ecuador

  2. Summary of the Workshop on Acoustic Remote Sensing of Volcanoes Sponsored by: Geological Survey of Canada National Science Foundation International Association of Volcanology and Chemistry of the Earth's Interior Instituto Geofisico, Escuela Politécnica Nacional, Quito, Ecuador National Center for Physical Acoustics, University of Mississippi Infrasound Laboratory, University of Hawaii

  3. Agenda Thirty Participants Principles of Infrasound and Volcano Acoustics Sensor Technology and Array Design Data Acquisition Systems and Formats Signal Processing Signal, Noise, and Clutter Canadian and US Prototype Operational System: ASHE French and Australian Volcano Monitoring Studies Science of Volcano Acoustics, and Infrasonic Signals from Ecuador, St. Helens, Kilauea, and Other Volcanoes. Selected Contributions from Participants.

  4. ASHE - Acoustic Surveillance for Hazardous Eruptions • Requests from ICAO, FAA • Has the potential to continuously monitor relatively cheaply over hundreds of kilometres • Is now a mature, proven technology suitable for deployment in remote areas • Aviation community would like ‘5 minute warning’. There is a direct tradeoff between spacing of arrays and latency of warning. • ‘Natural’ technology for direct measurement of atmospheric perturbation David McCormack, Geological Survey of Canada Henry Bass, NCPA University of Mississippi Milton Garces, University of Hawaii Michael Hedlin, UCSD Hugo Yepes, Escuela Politecnica Nacional, Quito, Ecuador

  5. ASHE - Acoustic Surveillance for Hazardous Eruptions 4-element infrasound array, 2C broadband seismometer, Meteorological station Real-time satellite link 3C broadband seismometer, Meteorological station Real-time satellite link Real-Time Data sent to Geological Survey of Canada

  6. Monitoring of Indonesian volcanoes with infrasound : preliminary resultsSURvey of Volcanic Arc of IndonesiaJ. Guilbert1, P. Harjadi2, M. Purbawinata3, S. Jammes1, A. Le Pichon1, B. Feignier1CEA/DASE 3 1 2 4 Pinatubo V.? Cendres V.? 1 4 3 2 Anak Krakatau V. Semeru-Bromo V. Detections obtained during the month of March 2005 • Clear and continuous infrasound detections are identified from Pinatubo, Semeru, Krakatau, Talang and Barren Island volcanoes demonstrating the potential of infrasound technology for volcano monitoring

  7. Multi-Technology observations of the Manam PNG Volcano Eruption, January 2005: Potential for an Enhanced Volcanic Ash Warning SystemDavid Brown, Andrew Tupper, Doug Christie, Ima Itikarai • Dec 2005: • 3 operational IMS stations, • sending to Vienna • 1 real time to Canberra (IS05) • March 2006: • 3 real time to Canberra • Automatic processing in Canberra: • detection list • source location 2643 km 2116 km 2600 km 2600 km 2887 km 3618 km IS07 3618 km IS07 IS04 IS05 IS05

  8. Infrasonic signal detected Infrasonic signal not detected Detection of Infrasound from Manam Volcano, PNGPaola Campus, Douglas R. Christieand David J. Brown, Paola.Campus@ctbto.org Manam Subplinian/Plinian Eruption, January 27th, 2005 - Height of ash plume: 21 to 24 km

  9. Manam, January 27th, 2005 Manam, January 27th, 2005 • Highlights: • The Important contribution IMS infrasound can make to volcano monitoring: • Manam seismic observatory operated by RVO was destroyed, • including some loss of life. • Substantial cloud cover on January 27 made satellite analysis • difficult. • Consequently, an ash advisory was not issued for 14 hours • The Important issue of accessing and processing IMS infrasound data in real time • IS07 processing could have issued alert 12 hours earlier • (real-time data feed to Canberra was not completed at the time)

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