U.S. Department of the Interior U.S. Geological Survey USGS Menlo Park GPS data processing and archiving J.L. Svarc, J.R. Murray, Fred Pollitz, Scott Haefner, Geological Survey, Menlo Park, CA

GIPSY processing of Campaign & Continuous Data

Data are processed using latest version of JPL’s GIPSY/OASIS software version 6.3

All data processed using single receiver ambiguity resolution strategy using WLPB files provided by JPL

Data are processed using latest version of JPL’s GIPSY/OASIS software version 6.3 All data processed using single receiver ambiguity resolution strategy using WLPB files provided by JPL Continuous networks are processed first using preliminary orbits and clocks and then rerun using final products from JPL as they become available. Final products are now available back to 1992

Data are processed using latest version of JPL’s GIPSY/OASIS software version 6.3 All data processed using single receiver ambiguity resolution strategy using WLPB files provided by JPL Continuous networks are processed first using preliminary orbits and clocks and then rerun using final products from JPL as they become available. Final products are now available back to 1992 Continuous networks are now processed in kinematic mode. Currently doing 5 minute solutions, but can also do higher rate solutions. Can now use ultra-rapid products for results that have a latency of around 2 hours

Data are processed using latest version of JPL’s GIPSY/OASIS software version 6.3 All data processed using single receiver ambiguity resolution strategy using WLPB files provided by JPL Continuous networks are processed first using preliminary orbits and clocks and then rerun using final products from JPL as they become available. Final products are now available back to 1992 Continuous networks are now processed in kinematic mode. Currently doing 5 minute solutions, but can also do higher rate solutions. Can now use ultra-rapid products for results that have a latency of around 2 hours Continuous nets results are cleaned and detrended. Offsets and seasonal signals are removed from regionally filtered results to obtain the best velocity estimates

Data are processed using latest version of JPL’s GIPSY/OASIS software version 6.3 All data processed using single receiver ambiguity resolution strategy using WLPB files provided by JPL Continuous networks are processed first using preliminary orbits and clocks and then rerun using final products from JPL as they become available. Final products are now available back to 1992 Continuous networks are now processed in kinematic mode. Currently doing 5 minute solutions, but can also do higher rate solutions. Can now use ultra-rapid products for results that have a latency of around 2 hours Continuous nets results are cleaned and detrended. Offsets and seasonal signals are removed from regionally filtered results to obtain the best velocity estimates Results are updated daily on web pages

Kinematic time series Time series shows the last 4 days of kinematic results. Each point is a new 5 minute solution

Kinematic time series Time series shows the last 4 days of kinematic results. Each point is a new 5 minute solution These plots are dynamic. You can scale the plots online to any time period you are interested in

Kinematic time series Time series shows the last 4 days of kinematic results. Each point is a new 5 minute solution These plots are dynamic. You can scale the plots online to any time period you are interested in Can append hourly data to plots to assist in postseismic response. Approximately 2 hour latency.

Deformation results top page

Rolling over either the dot on the map or the network name will highlight the region covered

Deformation results top page Rolling over either the dot on the map or the network name will highlight the region covered Networks are color coded on map – blue are continuous, red are campaign

Deformation results top page Rolling over either the dot on the map or the network name will highlight the region covered Networks are color coded on map – blue are continuous, red are campaign Links to all network results are listed

Deformation results top page Rolling over either the dot on the map or the network name will highlight the region covered Networks are color coded on map – blue are continuous, red are campaign Links to all network results are listed Links to Google Earth files

Time series and velocities

Links to field logs, local weather, NGS to reach directions to stations within 0.5 km of this location

Time series and velocities Links to field logs, local weather, NGS to reach directions to stations within 0.5 km of this location Latitude, Longitude, and XYZ position. Clicking on the map will take you to a larger Google map page

Time series and velocities Links to field logs, local weather, NGS to reach directions to stations within 0.5 km of this location Latitude, Longitude, and XYZ position. Clicking on the map will take you to a larger Google map page Time series in different reference frames

Time series and velocities Links to field logs, local weather, NGS to reach directions to stations within 0.5 km of this location Latitude, Longitude, and XYZ position. Clicking on the map will take you to a larger Google map page Time series in different reference frames GMT script and data used to create the plot

Time series and velocities Links to field logs, local weather, NGS to reach directions to stations within 0.5 km of this location Latitude, Longitude, and XYZ position. Clicking on the map will take you to a larger Google map page Time series in different reference frames GMT script and data used to create the plot Velocities, uncertainties, and noise parameters

Time series and velocities Links to field logs, local weather, NGS to reach directions to stations within 0.5 km of this location Latitude, Longitude, and XYZ position. Clicking on the map will take you to a larger Google map page Time series in different reference frames GMT script and data used to create the plot Velocities, uncertainties, and noise parameters Kinematic time series

North America fixed reference frame Process global IGS network nightly, ~100 stations

North America fixed reference frame Process global IGS network nightly, ~100 stations Transform non-fiducial solution into NA fixed reference frame using transformation parameters from Altamimi, 2012

North America fixed reference frame Process global IGS network nightly, ~100 stations Transform non-fiducial solution into NA fixed reference frame using transformation parameters from Altamimi, 2012 Create NA-fixed x-files used to transform all solutions for that date

Time series results North America fixed reference frame. Note, offsets have not been removed.

Time series results Regionally filtered North America fixed reference frame – removes most common mode noise. Offsets not removed from these time series.

Time series results Cleaned/Detrended results. These results come from code written by John Langbein to solve for velocities by removing outliers, estimating offsets, estimating postseismic relaxation, and using either default or estimated noise parameters.

Time series results Plots are static plots, but there are several options to look at different time scales. Plot shows the last 2 years of data – note, the blue dots represent results using preliminary as opposed to final orbits and clocks.

QC, metadata, archiving Links to quality control information, site logs, and photos

QC, metadata, archiving Links to quality control information, site logs, and photos Quality control statistics from teqc

QC, metadata, archiving Links to quality control information, site logs, and photos Quality control statistics from teqc Scanned field logsheets

QC, metadata, archiving Links to quality control information, site logs, and photos Quality control statistics from teqc Scanned field logsheets Photos

QC, metadata, archiving Links to quality control information, site logs, and photos Quality control statistics from teqc Scanned field logsheets Photos All USGS campaign and continuous data are archived at the NCEDC

Continuity of operations All processing done on a single 32 core rack mounted server running CentOS 6.6

Continuity of operations All processing done on a single 32 core rack mounted server running CentOS 6.6 Computer has redundant power supplies and is located in a room that is wired with emergency back up power

Continuity of operations All processing done on a single 32 core rack mounted server running CentOS 6.6 Computer has redundant power supplies and is located in a room that is wired with emergency back up power In case of catastrophic system failure, we have two 16 core desktops running the same software that can be reconfigured within a day or so to take over processing. These machines are located in the same building with emergency back up power.

Continuity of operations All processing done on a single 32 core rack mounted server running CentOS 6.6 Computer has redundant power supplies and is located in a room that is wired with emergency back up power In case of catastrophic system failure, we have two 16 core desktops running the same software that can be reconfigured within a day or so to take over processing. These machines are located in the same building with emergency back up power. All data are backed up on several disks on several machines and also sent to NCEDC

Continuity of operations All processing done on a single 32 core rack mounted server running CentOS 6.6 Computer has redundant power supplies and is located in a room that is wired with emergency back up power In case of catastrophic system failure, we have two 16 core desktops running the same software that can be reconfigured within a day or so to take over processing. These machines are located in the same building with emergency back up power. All data are backed up on several disks on several machines and also sent to NCEDC In case of disruption in the network, a computer in our Pasadena office is running the same software processing the SFBayArea and Southern_California continuous networks

Planned future improvements Add plots to qc web pages to see long term trends

Planned future improvements Add plots to qc web pages to see long term trends Add offsets for earthquakes and equipment changes to all time series (Nafixed, ITRF2008, regionally filtered). Include estimates and uncertainties for seasonal, postseismic, transient, and all noise parameters

Planned future improvements Add plots to qc web pages to see long term trends Add offsets for earthquakes and equipment changes to all time series (Nafixed, ITRF2008, regionally filtered). Include estimates and uncertainties for seasonal, postseismic, transient, and all noise parameters Add documentation of processing strategy, reference frame realization, regional filtering, and methods for producing derived quantities

Planned future improvements Add plots to qc web pages to see long term trends Add offsets for earthquakes and equipment changes to all time series (Nafixed, ITRF2008, regionally filtered). Include estimates and uncertainties for seasonal, postseismic, transient, and all noise parameters Add documentation of processing strategy, reference frame realization, regional filtering, and methods for producing derived quantities Create dynamic web pages so users can select the time frame they are interested in