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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
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

summary of the workshop on acoustic remote sensing of volcanoes
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

agenda
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.

ashe acoustic surveillance for hazardous eruptions

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

ashe acoustic surveillance for hazardous eruptions5

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

slide6

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
slide7

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

slide8

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

manam january 27 th 2005
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)