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Full-Text Articles in Physical Sciences and Mathematics
Ionoseis: A Package To Model Coseismic Ionospheric Disturbances, Thomas Dylan Mikesell, Lucie Rolland, Rebekah F. Lee, Florian Zedek, Pierdavide Coïsson, Jean-Xavier Dessa
Ionoseis: A Package To Model Coseismic Ionospheric Disturbances, Thomas Dylan Mikesell, Lucie Rolland, Rebekah F. Lee, Florian Zedek, Pierdavide Coïsson, Jean-Xavier Dessa
CGISS Publications and Presentations
We present the framework of the modeling package IonoSeis. This software models Global Navigation Satellite System (GNSS) derived slant total electron content (sTEC) perturbations in the ionosphere due to the interaction of the neutral atmosphere and charged particles in the ionosphere. We use a simplified model to couple the neutral particle momentum into the ionosphere and reconstruct time series of sTEC perturbations that match observed data in both arrival time and perturbation shape. We propagate neutral atmosphere disturbances to ionospheric heights using a three-dimensional ray-tracing code in spherical coordinates called Windy Atmospheric Sonic Propagation (WASP3D), which works for a …
Tsunamigenic Splay Faults Imply A Long‐Term Asperity In Southern Prince William Sound, Alaska, L. M. Liberty, D. S. Brothers, P. J. Haeussler
Tsunamigenic Splay Faults Imply A Long‐Term Asperity In Southern Prince William Sound, Alaska, L. M. Liberty, D. S. Brothers, P. J. Haeussler
CGISS Publications and Presentations
Coseismic slip partitioning and uplift over multiple earthquake cycles is critical to understanding upper‐plate fault development. Bathymetric and seismic reflection data from the 1964 Mw9.2 Great Alaska earthquake rupture area reveal sea floor scarps along the tsunamigenic Patton Bay/Cape Cleare/Middleton Island fault system. The faults splay from a megathrust where duplexing and underplating produced rapid exhumation. Trenchward of the duplex region, the faults produce a complex deformation pattern from oblique, south‐directed shortening at the Yakutat‐Pacific plate boundary. Spatial and temporal fault patterns suggest that Holocene megathrust earthquakes had similar relative motions and thus similar tsunami sources as in …