Academic Journal
Automated Estimation and Tools to Extract Positions, Velocities, Breaks, and Seasonal Terms From Daily GNSS Measurements: Illuminating Nonlinear Salton Trough Deformation
| العنوان: | Automated Estimation and Tools to Extract Positions, Velocities, Breaks, and Seasonal Terms From Daily GNSS Measurements: Illuminating Nonlinear Salton Trough Deformation |
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| المؤلفون: | Michael Heflin, Andrea Donnellan, Jay Parker, Gregory Lyzenga, Angelyn Moore, Lisa Grant Ludwig, John Rundle, Jun Wang, Marlon Pierce |
| المصدر: | Earth and Space Science, Vol 7, Iss 7, Pp n/a-n/a (2020) |
| بيانات النشر: | American Geophysical Union (AGU), 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Astronomy LCC:Geology |
| مصطلحات موضوعية: | GNSS, velocity field, Salton Trough, Superstition Hills fault, crustal deformation, Astronomy, QB1-991, Geology, QE1-996.5 |
| الوصف: | Abstract This paper describes the methods used to estimate positions, velocities, breaks, and seasonal terms from daily Global Navigation Satellite System (GNSS) measurements. Break detection and outlier removal have been automated so that decades of daily measurements from thousands of stations can be processed in a few hours. New measurements are added, and parameters are updated every week. Model parameters allow separation of interseismic, annual, coseismic, and postseismic signals. Tools available through GeoGateway (http://geo-gateway.org) allow rapid visualization and analysis of these terms for results that can be subsetted in time or space. Results show highly variable and nonlinear motion for GPS stations in southern California. The variable motion is related to seasonal motions, distributed tectonic motion, earthquakes, and postseismic motions that can continue for years. In some areas results suggest that additional processes are responsible for the observed motions. In general, following earthquakes, stations return to their long‐term motions after 2–3 years, though some exceptions occur. The use of the tools shows nonlinear motion in the Salton Trough of southern California related to the 2010 M7.2 El Mayor‐Cucapah earthquake, 2012 Brawley earthquake swarm, and a creep event on the Superstition Hills fault in 2017. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2333-5084 |
| Relation: | https://doaj.org/toc/2333-5084 |
| DOI: | 10.1029/2019EA000644 |
| URL الوصول: | https://doaj.org/article/dfa54bda3c834555a276629ee3caee9c |
| رقم الانضمام: | edsdoj.fa54bda3c834555a276629ee3caee9c |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23335084 |
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| DOI: | 10.1029/2019EA000644 |