Anna M. Ledeczi

I am an LDEO Postdoctoral Fellow in the Marine & Polar Geophysics Division. I am a interdisciplinary structural geologist and marine geophysicist interested in the architecture and evolution of accretionary wedges and the earthquake hazards associated with them. I use active source seismic reflection data to understand the structure of modern accretionary wedges with a particular focus on splay fault geometries and activity. I am also a field geologist interested in using exhumed subduction complexes to better understand the structure and deformation across megathrust faults. 

Education

2026 - Ph.D. in Earth and Space Sciences from the University of Washington (Advisor: Harold Tobin)2021 - B.A. in Earth Science from Columbia University 
Ledeczi, A.M., Tobin, H.J., Condit, C.B., Chen, T-W., Lindquist, P.C., García-Lasanta, C., Housen, B., and Mulcahy, S.R. (2026). Off-fault mélange formation accommodates only a small fraction of strain in the subduction seismogenic zone. Earth and Planetary Science Letters. DOI: 10.1016/j.epsl.2026.120341.Ledeczi, A.M., Ekström, G., & Taylor, B. (2025). Earthquake relocations illuminate tectonics along the Bismarck Sea Seismic Lineation, Papua New Guinea. Seismica, 4(2). DOI: 10.26443/seismica.v4i2.2041Ledeczi, A.M., Tobin, H.J., Chen, T., and Mulcahy, S., and Condit, C.B. (2025). Structure and properties of the Cascadia plate interface: Evidence from a newly described exhumed paleomegathrust in the Olympic Subduction Complex. GSA Bulletin. DOI: 10.1130/B38335.1Ledeczi, A.M., Lucas, M.C., Tobin, H., Watt, J., and Miller, N. (2024). Late Quaternary surface displacements on accretionary wedge splay faults in the Cascadia Subduction Zone: Implications for megathrust rupture. Seismica, 2(4). DOI: 10.26443/seismica.v2i4.1158