![Page 1: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/1.jpg)
Infrasound in the Geosciences
Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of MississippiMichael Hedlin, Gerald D’Spain, and Jon Berger, Scripps Institution of Oceanography, University of California San DiegoMilton Garces and Claus Hetzer, ISLA, University of HawaiiJohn V. Olson, Charles Wilson, Curt Szuberla and Daniel Osborne, University of Alaska at FairbanksPaul Golden and Gene Herrin, Southern Methodist UniversityRichard Kromer and Pres Herrington, Sandia National LaboratoryRod Whitaker and Doug Revelle, Los Alamos National LaboratoryKeith McLaughlin, Joydeep Bhattacharyya, Bob Woodward and Bob North, SMDC Monitoring Research, Arlington, VADavid Norris and Rob Gibson, BBN Technologies, Arlington, VA
![Page 2: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/2.jpg)
What does the infrasound community bring GEOSS?
Existing Arrays of SensorsGrowing Library of SignaturesImproved Understanding of Propagation/MetAbility to Confirm/Broaden Understanding of Events.
![Page 3: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/3.jpg)
Available Infrasound Stations
![Page 4: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/4.jpg)
IMS Sites
![Page 5: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/5.jpg)
Library of Signatures - Littoral Processes
![Page 6: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/6.jpg)
Severe Weather
Microbaroms allow storm tracking with infrasound
![Page 7: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/7.jpg)
Electromagnetic Activity
Sprites, Aurora
source at 90 km height
Liszka, 2001: Sprites in Sweden May 26/27, 1995
![Page 8: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/8.jpg)
Bolides
April 23, 2001~10kt
![Page 9: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/9.jpg)
Turbulence and Atmospheric Waves
Clear air turbulence monitoringLower, middle and upper atmosphere dynamics
![Page 10: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/10.jpg)
Improved Understanding of Infrasonic Wave Propagation
Progress in integration of required environmental information for modeling – further work required to resolve outstanding issues such as:
observed errors in azimuthphase identificationscattering and diffraction
Final goal of an operational full modeling capability (waveforms, travel times, phase velocities, amplitudes)Use of infrasound for tomography
![Page 11: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/11.jpg)
Example - Volcanic Signals
![Page 12: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/12.jpg)
Acoustic Surveillance for Hazardous Eruptions (ASHE)
In Cooperation with the Geological Survey of Canada and Instituto Geofisico, QuitoSmall arrays to be installed north of Quito and near Tundarahua. Data forwarded to Ottawa and Washington Area VAAC.Results ready in 2007.
![Page 13: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/13.jpg)
Example - Tsunami Source Location
![Page 14: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/14.jpg)
Example: Columbia TragedyA
ltit
ud
e (
km)
Trajectory in white Arrays in red CPA’s in yellow
![Page 15: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/15.jpg)
How do we build and maintain the core
Deploy infrasound arrays with seismometers where value is to be added – arrays add value.Maintain portable infrasound equipment available for deployment.Contribute to a common data base.Document major events detected by multiple sensors – WSMR Experiments
![Page 16: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/16.jpg)
Geophysical Events
Ground Truth Event Database is growing: SMDC Data CenterSome sources are poorly characterized
Date Type of Event Lat Lon Time (UT) Description CSS Data Available
4/23/2001 Bolide 29.9 -133.89 6:12 April 23 Bolide IS10, DLIAR, IS26, IS57, IS59, SGAR*, NVIAR, FAI
10/11/2000 Rocket 28.49 -80.58 23:17 Space Shuttle Discovery IS10*, DLIARfrom Kennedy
8/25/2000 Bolide 14.45 -106.13 1:12:25 Acapulco Bolide IS59, DLIAR, FAI
12/18/1999 Rocket 34.7 120.6 18:57 Lockheed Martin Atlas DLIAR, SGAR2AS from Vandenburg
5/22/1999 Rocket 34.7 -120.6 9:36 Air Force Titan 4B DLIAR, SGARfrom Vandenburg
11/19/1997 Explosion 33.62087 -106.48 18:00 20,000-lb C4 explosion, DLIAR, TXIAR,LSARWhite Sands Missile Range
Subset of CMR GT Database
![Page 17: Infrasound in the Geosciences Henry E. Bass, Carrick Talmadge, and Kenneth Gilbert, National Center For Physical Acoustics, University of Mississippi Michael](https://reader035.vdocument.in/reader035/viewer/2022062322/56649eb55503460f94bbe3b4/html5/thumbnails/17.jpg)
The End