I am a seismologist, specializing in using earthquakes to learn about the tectonics and deep interior of the Earth.
Structures in the deep crust or mantle of the Earth can teach us about the long-term driving forces behind tectonic, volcanic, and seismic features we see at the surface. Mapping these ultra-deep structures in 3D requires a unique combination of geologic perspectives, computer modeling, high-tech equipment, and some "good old-fashioned” digging (usually in scenic locations!).
Some of my ongoing projects include:
- Studying the deep under-side of the East African Rift System to see how the rift grows and changes
- Determining how spatial variability in the mantle leads to different types of earthquakes and volcanoes in Alaska and other subduction systems
- Figuring out how earthquakes in the Adirondacks line up (or don’t) with ancient tectonic boundaries.
Ph.D. in Geosciences - Pennsylvania State University (2010)
B.S. in Geology - University of Florida (2004)
- Washington University in Saint Louis - Department of Earth and Planetary Sciences
- 2014-2015 Research Associate; Lecturer
- 2012-2014 Postdoctoral Research Associate
- 2010-2013 Development Geophysicist
- 2006 Geophysical Intern
I teach classes about geology, natural hazards, plate tectonics, geophysics, the deep-Earth interior, and seismology. Class I have taught at Colgate are listed below.
- CORE176 - Natural Disasters: Science, Media, and Movies
- GEOL105 - Megageology
- GEOL190 - Evolution of Planet Earth
- GEOL235 - Tectonics and Earth Structure
- GEOL311 - Environmental and Exploration Geophysics
- GEOL420 - Solid Earth: Geophysics
- GEOL420 - Solid Earth: Plumes
My research interests include studying earthquake characteristics and studying the structure of Earth's crust and mantle using seismic waves created by earthquakes. Much of my published works focus on areas of active deformation and volcanism in eastern and western Africa, as well as the structure of stable cratons in southern Africa.
My current projects include investigation of African tectonics and volcanism, studies of seismicity and structure in Alaska, imaging subduction near Fiji and Tonga, and characterization of seismicity in the New York. I am also interested in working with students to investigate the shallow structure and geologic history of the central New York area.
Seismic (ground motion) data is gathered using networks of instruments called seismometers. Seismometers can measure movements of the ground even smaller than a nanometer, and can detect earthquakes from across the world! During field work, my students, collaborators, and I bury these sensitive instrument in many locations across the area we are studying. The seismometers then make continuous records of ground motion for a year or longer.
For my previous projects, I have conducted field work in Uganda, Tanzania, Zambia, South Africa, Antarctica (South Pole Station and McMurdo Station), the Alaskan Peninsula, and the Adirondack Mountains. Other projects require data collection from the bottom of the ocean, so I have also conducted field work aboard the NSF Research Vessel (RV) Oceanus, deploying Ocean Bottom Seismometers.
In summer 2019, I will conduct field work on Kodiak Island and off-shore of the Alaskan Peninsula aboard the NSF RV-Sikuliaq. For details on field seasons, see my C.V.
Abers, G., Adams, A., Haeussler, P., Roland, E. , Shore, P., Wiens, D., Schwartz, S., Sheehan, A., Shillington, D., Webb, S., and Worthington, L. (2019), Examining Alaska’s earthquakes on land and sea, EOS, 100, 10.1029/2019EO117621
A. Adams, J. Miller*, and N. Accardo* (2018), Relationships between lithospheric structures and rifting in the East African Rift System: A Rayleigh wave tomography study, Geochemistry, Geophysics, Geosystems, Vol. 19, 10, 3793-3810. https://doi.org/10.1029/2018GC007750
Graw, J.*, A. Adams, S. Hansen, D. Wiens, L. Hackworth*, and Y. Park (2016), Upper mantle shear wave velocity structure beneath northern Victoria Land, Antarctica: Volcanism and uplift in the northern Transantarctic Mountains, Earth and Planetary Science Letters, Vol. 449, 48-60. https://doi.org/10.1016/j.epsl.2016.05.026
Adams, A., D. Wiens, A. Nyblade, G. Euler, P. Shore, and R. Tibi (2015), Lithospheric instability and the source of the Cameroon Volcanic Line: Evidence from Rayleigh wave phase velocity tomography, Journal of Geophysical Research - Solid Earth, Vol. 120, 1708-1727. https://doi.org/10.1002/2014JB011580
O’Donnell, J. P., A. Adams, A. A. Nyblade, G. D. Mulibo*, and F. Tugume* (2013), The uppermost mantle shear wave velocity structure of eastern Africa from Rayleigh wave tomography: constraints of rift evolution, Geophysical Journal International, Vol. 194, iss. 2, 961-978.
Adams, A., Nyblade, A., and D. Weeraratne (2012), Upper mantle shear wave velocity structure beneath the East African Plateau: evidence for a deep, plateau-wide low velocity anomaly, Geophysical Journal International, Vol. 189, 123-142.
* indicates an undergraduate or graduate co-author