Multiple seismogenic processes for high-frequency earthquakes at Katmai National Park, Alaska: Evidence from stress tensor inversions of fault-plane solutions
Moran SC. 2003. Multiple seismogenic processes for high-frequency earthquakes at Katmai National Park, Alaska: Evidence from stress tensor inversions of fault-plane solutions. Bulletin of the Seismological Society of America. 93(1):94-108
The volcanological significance of seismicity within Katmai National Park has been debated since the first seismograph was installed in 1963, in part because Katmai seismicity consists almost entirely of high-frequency earthquakes that can be caused by a wide range of processes. I investigate this issue by determining 140 well-constrained first-motion fault-plane solutions for shallow earthquakes occuring between 1995 and 2001 and inverting these solutions for the stress tensor in different regions within the park. Earthquakes removed by several kilometers from the volcanic axis occur in a stress field characterized by horizontally oriented.
- Type
- Journal Article
- Authors
- Moran, Seth
- Units
- KATM
- Keywords
- Alaska, Fault-Plane Solutions, High-frequency Earthquakes, Katmai National Park And Preserve, Seismogenic Processes, Stress tensor inversions, Volcanoes