GPS Position Time JPL
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1 GPS Position Time JPL Mars Science Laboratory! Susan Owen Jet Propulsion Laboratory, California Institute of Technology Angelyn Moore, Sharon Kedar, Zhen Liu, Frank Webb, Mike Heflin, Shailen Desai 6/6/13! 2013 California Institute of Technology. Government sponsorship acknowledged. PRE-DECISIONAL DRAFT; For planning and discussion purposes only 1
2 Overview of GPS Analysis Groups - Solid Earth JPL Opera/onal GPS Orbit Analysis Lead: Shailen Desai Near Earth Tracking ApplicaAons Group & Systems Group GIPSY- OASIS Processing So>ware Lead: Shailen Desai Near Earth Tracking ApplicaAons Group & Systems Group Real- Time GIPSY/ GDGPS Lead: Yoaz Bar- Sever Near Earth Tracking Systems Group GPS Network Point Posi/oning Lead: Angie Moore Geodynamics & Space Geodesy Group (GSGG) JPL Global Time Series Analysis Lead: M. Heflin GSGG JPL/SOPAC MEaSUREs Combined Time Series & Veloci/es Leads: Y. Bock & S. Kedar Scripps & GSGG ARIA Time Series and Earthquake Response Products Lead: S. Owen GSGG, JPL & Caltech Geocenter & Reference Frame Global Plate Motion Crustal Deformation Earthquake & Eruption Models Earthquake & Volcano Response PRE-DECISIONAL DRAFT; For planning and discussion purposes only 2
3 GPS Network Precise Point Positioning (PPP) Operational Analysis of Global GPS Stations 2986 time series From Aug 15, 1992 to present Includes all of PBO Network Positions & Tropospheric products added on weekly basis Products generated using JPL Final orbits & clocks IGS08 reference frame Download raw time series from: ftp://sideshow.jpl.nasa.gov/pub/ JPL_GPS_Timeseries/ repro2011b/raw/ Go to website for more information: click on PPP data products PRE-DECISIONAL DRAFT; For planning and discussion purposes only 3
4 JPL Global Time Series Post-processing of PPP solutions includes: Outlier removal Offset detection Time Series Fit for velocities, offsets, amplitude of annual and semi-annual periodic function Parameter values available on website: series.html Plots available as well 2389 sites 1995 to present Time series, residuals available at ftp://sideshow.jpl.nasa.gov/pub/ JPL_GPS_Timeseries/repro2011b/ post/ PRE-DECISIONAL DRAFT; For planning and discussion purposes only 4
5 Global sta2on posi2ons JPL & SOPAC Combined Time Series JPL - GIPSY GPS observables + metadata Tropospheric delays Global sta2on posi2ons SOPAC - GAMIT Tropospheric delays SOPAC Archive / CDDIS L0: GPS Observables + Metadata L1A: Global Long term raw Geodetic Time Series L1B: Troposphere delay time series Solid Earth Science ESDR System GPS Explorer Combina2on - st_filter Global cal. & val. sta2on posi2ons Precipitable Water Vapor generator PWV Independent atmospheric data or Weather models L1C: Calibrated and Validated Global Geodetic Time Series L2A: Precipitable Water Vapor time series Legend Process Product Produced outside SESES Time Series Analysis Global filtered 2me series Principal Component Analysis Global Tectonic Veloci2es L2B: Filtered Calibrated & Validated Global Geodetic Time Series L3A: Global Tectonic Velocities L1 Processes and products L2 Processes and products L3 Processes and products New products
6 JPL/SOPAC Coverage, Time Series MEaSUREs 2006 MEaSUREs 2012 Time Series Analysis: present 1-2 week latency in updates to time series 1845 sites - will expand under MEaSUREs 2012 Outlier removal Velocities, offsets, seasonal amplitudes and phase, postseismic transients Common Mode Error removed from filtered time series PCA analysis Only time series residuals from well-behaved sites used in PCA PRE-DECISIONAL DRAFT; For planning and discussion purposes only 6
7 JPL/SOPAC Combined Time Series PRE-DECISIONAL DRAFT; For planning and discussion purposes only 7
8 Advanced Rapid Imaging and Analysis PRE-DECISIONAL DRAFT; For planning and discussion purposes only 8
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10 ARIA Data Systems Overview ARIA- EQ prototype data system Current automated capabili2es InSAR Raw frames (ALOS, ENVI, CSK) Geocoded interferograms On- demand Damage Proxy Map GPS Kinema2c Posi2on Time Series (sub- daily posi2ons) Daily Posi2on Time Series Quality control Runs on Beowulf compute cluster Year 3 developing automated EQ Product and fault modeling capability ARIA- MH data system Migrate capabili2es onto hybrid cloud compu2ng infrastructure. Integrate Monitoring Data Products (e.g., InSAR Time Series Analysis) REPAIR - Integrate ARIA Products with USGS NEIC ARIA Co- Laboratory - Build Analysis & Modeling Workbench PRE-DECISIONAL DRAFT; For planning and discussion purposes only 10
11 ARIA EQ: Events with Demo Response Data Products 2010 M7.0 Haiti Coseismic Interferogram 2010 M7.2 M El Mayor-Cucapah GPS offsets Coseismic Interferograms SAR Pixel offset image 2011 M9.0 Tohoku GPS displacement waveforms GPS coseismic offsets (mainshock, major aftershock) Coseismic interferograms (mainshock, aftershock) Damage Proxy Map (for tsunami damage in select regions) 2011 M7.1 Van Coseismic Interferogram SAR Pixel offset image GPS coseismic offsets 2012 Brawley Seismic Swarm (M5 s) GPS displacement waveform GPS coseismic offsets (for cumulative events) 2012 M7.6 Costa Rica GPS displacement waveform GPS coseismic offsets 2013 M5.8 Sumoto, Japan GPS coseismic offsets 2011 M6.3 Christchurch Coseismic interferogram Damage Proxy Map PRE-DECISIONAL DRAFT; For planning and discussion purposes only 11
12 ARIA Monitoring Data Products Product Needs/Applications GPS time series and displacements InSAR displacements Coherence Change maps and time series InSAR Time Series Reflectivity Change maps Troposphere-corrected interferograms Forms the basis for higher level products. Provides high temporal resolution for monitoring surface deformation, transient detection. Forms the basis for higher level products. Provides high spatial resolution maps of surface deformation for assessing hazards. Detects damage from lava flow, ash fall, earthquakes, landslides, levee failure, floods, etc. Very useful with all-weather day/night capability and comprehensive coverage. U.S. patent for algorithm (Yun et al., 2011b). Provides history of surface deformation with high spatial resolution, input for data fusion and transient detection. Detects damage from flood and tsunami. Can provide volcano monitoring capability. Very useful with all-weather day/night capability and comprehensive coverage. Higher fidelity surface deformation measurements. Combined GPS and InSAR 3D surface motion maps Advisory Alerts of anomalous ground motion High spatial and temporal resolution products for monitoring. Provides basis for transient detection. Identifies regions that need further investigation. Useful for regions where data set is too large to evaluate manually PRE-DECISIONAL DRAFT; For planning and discussion purposes only 12
13 Summary/Comments Different flavors of GPS time series analysis at JPL Use same GPS Precise Point Positioning Analysis raw time series Variations in time series analysis/post-processing driven by different users. JPL Global Time Series/Velocities - researchers studying reference frame, combining with VLBI/SLR/DORIS JPL/SOPAC Combined Time Series/Velocities - crustal deformation for tectonic, volcanic, ground water studies ARIA Time Series/Coseismic Data Products - Hazard monitoring and response focused ARIA data system designed to integrate GPS and InSAR GPS tropospheric delay used for correcting InSAR Caltech s GIANT time series analysis uses GPS to correct orbital errors in InSAR Zhen Liu s talking tomorrow on InSAR Time Series analysis PRE-DECISIONAL DRAFT; For planning and discussion purposes only 13
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