Dr. Gregory Beroza of Stanford University to speak at Pioneer Park Theatre on Monday, September 17; 7 p.m.
In the past decade, earthquake scientists have discovered a family of unusually slow earthquakes. These slow earthquakes occur in diverse geologic environments. Like ordinary earthquakes, they occur as slip on the same faults that host ordinary earthquakes, but they take a long time to unfold, such that they can be described as "slow."
Little Sitkin Volcano shows signs of unrest
Little Sitkin Volcano, a 3,898-foot-stratovolcano near the end of the Aleutian Chain, is exhibiting signs of elevated unrest and scientists with the Alaska Volcano Observatory have put the volcano on color code yellow. According to the latest AVO report, a swarm of high-frequency earthquakes began at 7:15 p.m. Alaska Daylight Time on August 29, 2012.
Alaska Science Forum: 100 years since the big one
By nrozell [at] gi [dot] alaska [dot] edu (Ned Rozell)
On June 6, 1912, if you happened to be sitting on a log outside your cabin near Fairbanks, Juneau or Dawson City, you would have heard an explosion.
Rattling Alaska: AEIC gathers info on recent seismicity
The Alaska Earthquake Information Center, based at the Geophysical Institute at the Unviersity of Alaska Fairbanks, collects earthquake data from a network of more than 400 seismic sites. Their job is to not only collect event data, but analyze and archive it for the State of Alaska, other agencies and the general public.
Magnitude 3.01 quake rumbles central Alaska
Centered just 38 miles south/southeast of Kantishna, Alaska, a magnitude 3.01 earthquake rumbled on April 27, 2012. The earthquake occurred at 4:36 a.m. It was just one of four temblors that rocked the state of a magnitude 3 or greater on this date.
Magnitude 3.28 quake shakes Fairbanks April 11, 2012
The Interior rumbled early this morning with a sizeable quake. With an epicenter just 35 miles west of Fairbanks, a 3.83 earthquake occurred at 1:21 a.m. April 11, 2012. Since that initial temblor, a number of minor quakes continue to rattle the center of the state.
David Fee
- (Fall 2010-Current) Research Assistant Professor, Geophysical Institute, University of Alaska Fairbanks.
- (Fall 2004-Summer 2010) Field System Engineer and Analyst, University of Hawaii Infrasound Lab, Kailua Kona, HI.
- (Summer 2003-2004 ) Seismology Intern, USGS Geologic Hazards Team, Golden, CO.
- (2002-2004) Research Assistant, University of Wyoming, Laramie, WY.
- (2001) Seismology Intern, Incorporated Research Institutions for Seismology (IRIS), New Zealand/Boulder, CO.
- Volcano acoustics, volcanic jet noise and jet dynamics, detection and notification of hazardous eruptions using infrasound arrays, combing multiple geophysical technologies (e.g. infrasound, seismic, remote sensing) to understand volcanic eruptions.
- Infrasound propagation and atmospheric structure.
- Infrasound signal detection and discrimination.
Published
- 1. Fee, D., R. Waxler, J.Assink, Y.Gitterman, J. Given, J. Coyne, P. Mialle, M. Garcies, D. Drob, D. Kleinert, Rm. Hofstetter, and P. Grenard, (2013), Overview of the 2009 and 2011 Sayarim Infrasound Calibration Experiments, J. Geophys. Res. Atmos., 118, doi:10.1002/jgrd.50398.
- 2. Fee, D., and R.S. Matoza, (2013), An Overview of Volcano Infrasound: from Hawaiian to Plinian, Local to Global, Journal of Volcanology and Geothermal Research, 249, 123-139, doi:10.1016/j.jvolgeores.2012.09.002.
- 3. Fee, D., S. R. McNutt, T. Lopez, K. M. Arnoult, C. A. L. Szuberla, J. V. Olson, (2013), Combining Local and Remote Infrasound Recordings from the 2009 Redoubt Volcano Eruption, Journal of Volcanology and Geothermal Research, doi:10.1016/j.volgeores.2011.09.012.
- 4. Garces, M., D. Fee, and R. S. Matoza (2013), Volcano Acoustics, in Modeling Volcanic Processes: The Physics and Mathematics of Volcanism, edited by S. A. Fagents, et al., Cambridge Univ Press.
- 5. Green, D.N., L. G. Evers, D. Fee, R. S. Matoza, M. Snellen, P. Smets, and D. Simons (2013), Hydroacoustic, infrasonic and seismic monitoring of the submarine eruptive activity and sub-aerial plume generations at South Sarigan, May 2010, Journal of Volcanology and Geothermal Research, 257(0), 31-43, doi:http://dx.doi.org/10.1016/j.jvolgeores.2013.03.006.
- 6. Lopez, T., Carn, S., Werner, C., Kelly, P., Doukas, M., Pfeffer, M., Fee, D., Webley, P. W., Schneider, D., and Cahill, C., (2013). Evaluation of Redoubt Volcano’s sulfur dioxide emissions by the Ozone Monitoring Instrument, Journal of Volcanology and Geothermal Research.
- 7. McNutt, S.R., G. Thompson, M.E. West, D. Fee, S. Stihler, E. Clark, (2013), Local seismic and infrasound observations of the 2009 explosive eruptions of Redoubt Volcano, Alaska, Journal of Volcanology and Geothermal Research.
- 8. De Angelis, S., Fee, D., Haney, M., Schneider, D. (2012) Detecting hidden volcanic explosions from Mt. Cleveland Volcano, Alaska with infrasound and ground-coupled airwaves, Geophysical Research Letters, 39(21), L21312, doi:10.1029/2012GL053635.
- 9. Fee, D., Garcés, M., Orr, T., and Poland, M.R. (2011). Infrasound from the 2007 fissure eruptions of Kīlauea Volcano, Hawai'i, Geophys. Res. Lett., 38, L06309, doi:10.1029/2010GL046422.
- 10. Patrick, M., Wilson, D., Fee, D., Orr, T. and Swanson, D., (2011). Shallow degassing events as a trigger for very-long-period seismicity at Kīlauea Volcano, Hawai‘i. Bulletin of Volcanology, doi:10.1007/s00445-011-0475-y.
- 11. Stopa, J. E., K. F. Cheung, M. A. Garcés, and D. Fee (2011), Source of microbaroms from tropical cyclone waves, Geophys. Res. Lett., 38, L05602, doi:10.1029/2010GL046390.
- 12. Fee, D., M. Garcés, M. Patrick, B. Chouet, P. Dawson, and D. Swanson (2010), Infrasonic harmonic tremor and degassing bursts from Halema'uma'u Crater, Kilauea Volcano, Hawaii, Journal of Geophysical Research-Solid Earth, 115, B11316, doi:10.1029/2010JB007642.
- 13. Fee, D., A. Steffke, and M. Garces (2010), Characterization of the 2008 Kasatochi and Okmok eruptions using remote infrasound arrays, Journal of Geophysical Research-Atmospheres, 115, D00L10, doi:10.1029/2009JD013621.
- 14. Fee, D., M. Garces, and A. Steffke (2010), Infrasound from Tungurahua Volcano 2006–2008: Strombolian to Plinian eruptive activity, Journal of Volcanology and Geothermal Research, 193(1-2), 67-81, doi:10.1016/j.jvolgeores.2010.03.006.
- 15. Arnoult, K. M., J. V. Olson, C. A. L. Szuberla, S. R. McNutt, M. A. Garcés, D. Fee, and M. A. H. Hedlin (2010), Infrasound observations of the 2008 explosive eruptions of Okmok and Kasatochi volcanoes, Alaska, J. Geophys. Res., 115, D00L15, doi:10.1029/2010JD013987.
- 16. Matoza, R. S., D. Fee, and M. A. Garcés (2010), Infrasonic tremor wavefield of the Pu`u `Ō`ō crater complex and lava tube system, Hawaii, in April 2007, Journal of Geophysical Research-Solid Earth, 115, B12312, doi:10.1029/2009JB007192.
- 17. Steffke, A., D. Fee, M. Garces, and A. Harris (2010), Eruption chronologies, plume heights and eruption styles at Tungurahua Volcano: Integrating remote sensing techniques and infrasound, Journal of Volcanology and Geothermal Research, 193(3-4), 143-160, doi:10.1016/j.jvolgeores.2010.03.004.
- 18. Matoza, R. S., D. Fee, M. A. Garces, J. M. Seiner, P. A. Ramon, and M. A. H. Hedlin (2009), Infrasonic jet noise from volcanic eruptions, Geophysical Research Letters, 36, L08303, 10.1029/2008GL036486.
- 19. Mikumo, T., T. Shibutani, A. Le Pichon, M. Garces, D. Fee, T. Tsuyuki, S. Watada, and W. Morii (2008), Low-frequency acoustic-gravity waves from coseismic vertical deformation associated with the 2004 Sumatra-Andaman earthquake (Mw = 9.2), Journal of Geophysical Research-Solid Earth, 113, B12402, doi:10.1029/2008JB005710.
- 20. Garcés, M., D. Fee, A. Steffke, D. McCormack,R. Servranckx, H. Bass,C. Hetzer, M. Hedlin, R. Matoza, H. Yepes, and P. Ramon (2008), Capturing the Acoustic Fingerprint of Stratospheric Ash Injection, Eos Trans. AGU, 89, doi:10.1029/2008EO400001
- 21. Park J., Garces M., Fee D., Pawlak G., Collective Bubble Oscillations as a Component of Surf Infrasound, Journal of the Acoustical Society of America, 123 (5), 2506-12, 2008
- 22. Fee, D., and M. Garcés (2007), Infrasonic tremor in the diffraction zone, Geophysical Research Letters, 34, L16826, doi:10.1029/2007GL030616.
- 23. Garcés, M., J. Aucan, D. Fee, P. Caron, M. Merrifield, R. Gibson, J. Bhattacharyya, and S. Shah (2006), Infrasound from large surf, Geophysical Research Letters, 33, L05611, doi:10.1029/2005GL025085.
- 24. Aucan, J., D. Fee, and M. Garcés (2006), Infrasonic estimation of surf period, Geophysical Research Letters, 33, L05612, doi:10.1029/2005GL025086.
- 25. Fee D., K. Dueker (2004), Mantle transition zone topography and structure beneath the Yellowstone hotspot, Geophysical Research Letters, 31, L18603, doi:10.1029/2004GL020636.
Iliamna Volcano: AVO increases alert level to Advisory and the Aviation Color Code to Yellow
The Alaska Volcano Observatory changed the Aviation Color Code of Iliamna Volcano to Yellow on Friday, March 9. Over the past three months the earthquake rate at the volcano has steadily increased and now exceeds normal background levels. Although it is not certain that this sustained increase in earthquake activity represents the movement of magma at depth, it is a significant change and AVO has increased the Alert Level to Advisory and the Aviation Color Code to Yellow.
