MAGNET GPS Station - Photo by Geoff Blewitt

Link to our Data Products Page:

Quick Links to Data Products:

The plates frames are defined using Euler rotation poles found in the supplement of Kreemer et al., 2014. The table is also separately available at this link. The format of the file is latitude(deg), longitude(deg), magnitude (deg/Myr), plate ID. To be entirely consisent with the assumed kinematic model, plate velocity at any latitude and longitude can then be computed using the formulas (B1) and (B2) in Kreemer et al., 2014, where Earth’s radius R = 6371 km.

Each station is associated with one or more tectonic plates, as defined by Bird, 2002. Every station is on at least one plate, but some stations can have more than one plate associated with them if the second plate is close. For every station there is at least one large plate in the set assigned to it (the large plates being PA, NA, SA, EU, AF, AN, AU). A text file that lists the plates associated with each station is available HERE.

Vertical Land Motion (VLM) Using GPS Imaging:

Downloadable Lists of GPS Data Holdings:

The linked text files above are updated daily and include: Station Name, Latitude, Longitude, Height, XYZ coordinates, data begin and end dates, number of solutions and station operator original site name.

Database of Potential Step Discontinuities

Decimal Year Convention:


For about half of all GPS stations processed at NGL we have been able to extract and tabulate information about the station monuments from the IGS log files. This information includes description of the monument, its foundation construction, height, depth, and geologic enviroment when available. This information can be used to assess the factors contributing to station stability, error checking and tracking down issues in the time series, studies of noise characteristics, etc.

This information is now posted in the: Monument Table

Loading Predictions

We now provide displacement predictions from models of geophysical surface loading. Three-component displacement predictions from non-tidal atmospheric, non-tidal ocean, hydrological model, and GRACE mascon-based equivalent water height, and reservoirs within the continentnal united states are included for all days for which we provide 24 hour solutions.

The data are provided as east, north, up triplets concatenated to the end of lines in our .tenv3 files. The new files with the appended triplets can be found linked from every station page and also en masse at this link.

See this Readme File for an explanation of the columns in the extended .tenv3 files.

Plots of the predictions for vertical motions are also available via a tab on the station pages next to the time series plots, or for all stations in this directory.

System Status Notes

(1) Rapid solutions may be degraded starting 2022-11-28 owing to a change in Rapid orbit and clock models from JPL which are now in the IERS 2010/ITRF2020 framework. This causes a slight mismatch with current NGL processing models which will be rectified in mid-2023. Final products are unaffected and remain in the IERS 2010/ITRF2014 framework.

(2) We expect that in 2023 JPL will have computed new Final orbits and clocks, and at that time we will undertake complete reprocessing of Final products in the IERS 2020/ITRF2020 framework. New NGL Final products will then be computed and are expected to be complete by early 2024.

(3) An issue with downloading data from the EarthScope portal is causing problems with recent solutions from some of the Network of the Americas (NOTA) stations. We are working to resolve this issue.

(4) A change has been made to the time series plots. The values for the trends that are annotated on the plots were previously the MIDAS rate. However, it is sometimes not the case that the slope of the red line fitting the time series is the MIDAS rate. This happens in cases where it is not possible to calculate a MIDAS rate (e.g., if the time series is too short) or if the MIDAS rate was not used e.g., when a large earthquake occurs nearby requiring introduction of exponential decay terms to the time series model. Now the annotated values are always the trend used to plot the red line, which is sometimes the MIDAS rate, but not always.

About us

The Nevada Geodetic Laboratory (NGL) conducts research in the field of space geodesy to study scientific problems that have both regional and global significance. We are using the Global Positioning System (GPS) to study tectonic and geothermal activity across Nevada. We are also using the GPS to study global patterns in surface mass loading and global-scale plate tectonic problems.

We are located within the Nevada Bureau of Mines and Geology at the University of Nevada, Reno, and interact closely with the Department of Geological Sciences and the Nevada Seismological Laboratory.

About our logo

NGL logo: Designed by C.Kreemer and G.Blewitt NGL logo: Design by C.Kreemer and G.Blewitt

The NGL logo was designed by Corné Kreemer and Geoff Blewitt. The logo is designed to represent the work and research interests of the members of the NGL, which include both research concerning the state of Nevada and work on a more global scale.

University of Nevada, Reno
Last edited 17 February 2020.