Title seismic monitoring of WA and or volcanoesperiod of performance 11 1 2022 thru 4 30 2025AWARD purpose the pacific northwest seismic network pnsn at the university of washington UW and the U.S.…

Title seismic monitoring of WA and or volcanoesperiod of performance 11 1 2022 thru 4 30 2025AWARD purpose the pacific northwest seismic network pnsn at the university of washington UW and the U.S. Geological survey s USGS cascades volcano observatory CVO will continuously monitor ground shaking at high-threat volcanoes in washington WA and oregon or . Monitoring has the dual purpose of detecting changes that could indicate imminent volcanic activity and gaining a better understanding of the volcanic systems in general. All data collected are made publicly available and are used by scientists to further their collective understanding of the volcanic systems in cascadia and volcanic systems in general.activities to be performed the pnsn operates seismic stations that continuously record ground vibrations in the region and send the raw data to the UW in real-time, 24 7. At UW, computer software automatically detects earthquakes and other types of events. All detections are reviewed, labeled, and better located by an analyst. The latitude, longitude, depth, magnitude, origin time, and focal mechanism of each reasonably well-located event, along with the arrival times and amplitude measurements of the seismic phases that were used to determine those, are sent to the comprehensive catalog of the advanced national seismic system. All events, poorly located or well-located, are saved in a local database. UW permanently archives all the collected seismic data by sending IT to the data management center of the incorporated research institutions for seismology, a national science foundation-funded facility that provides access to seismic data from around the world in standardized formats. UW maintains the pnsn website to inform the public about earthquakes and volcanic hazard in the region and includes pages specific to each volcano with additional products such as spectrograms that show the shaking energy in different frequency bands over time and cumulative counts of earthquakes at a particular volcano over time. The recipient continue all these activities. In addition, sophisticated analysis software will be applied to study the seismicity patterns at MT. Hood in greater detail. The plan is to expand this analysis to some of the other cascade volcanoes. The recipient will also start using three-dimensional models of the seismic wave speeds in the earth s crust to predict the travel times of seismic waves. Predicted travel times are needed to locate earthquakes, and up until now, the pnsn has used simplified models in which the seismic velocities only vary with depth. The pnsn will update its public-facing website and ensure that all volcano-related information remains available during and after this process. The recipient will continue to maintain and operate the seismic network and keep the data flowing 24 7. In addition, they will finish upgrades of old sites from antiquated equipment to modern equipment at MT. Saint helens, MT. Rainier, MT. Baker, MT. Adams, glacier peak, and MT. Hood.expected outcomes the catalog and products will be used by CVO scientists in addition to internal tools to monitor volcano activity levels in WA and or. The enhanced catalog for MT. Hood will provide insight into whether seismicity on the tectonic faults and the hydrothermal and magmatic systems are linked. Using a three-dimensional earth crust model will improve the earthquake locations in our catalog and enhance the ability to tie seismicity to specific geologic structures and processes. Upgraded seismic sites produce data that will be used for more sophisticated analysis to advance our collective understanding of the cascade volcanoes and volcanoes in general.intended beneficiaries the general public in WA, or, and beyond.