MEaSUREs SESES: High-Rate GNSS and Seismogeodetic Time Series

NASA's MEaSUREs SESES project provides multi-decade, calibrated geodetic Earth Science Data Records (ESDRs) from Scripps Institution of Oceanography and NASA's Jet Propulsion Laboratory. The dataset includes continuous high-rate GNSS, seismogeodetic, and meteorological time series, a catalog of transient deformation events like Episodic Tremor and Slip (ETS), and estimates of near-surface water content. These high-rate displacement products, sampled at 1 Hz or greater, are used to measure ground motions during earthquakes.

Use Cases

• Measuring co-seismic and post-seismic ground displacement based on high-rate GNSS time series.
• Analyzing aseismic transient deformation events like Episodic Tremor and Slip (ETS) in Cascadia based on the transient deformation catalog.
• Estimating total near-surface water content for hydrological studies based on continuous GNSS time series over the continental U.S.
• Integrating seismogeodetic data for improved earthquake early warning and source characterization.

Strengths

• Data is calibrated and validated, produced by authoritative institutions (Scripps Institution of Oceanography and NASA JPL).
• Covers a multi-decade time range, providing a long baseline for deformation studies.
• Includes high-rate displacement data sampled at 1 Hz or greater, suitable for capturing rapid ground motions.

Limitations

• Key metadata such as specific column names, row counts, and file sizes are unknown across all sources.
• The license is ambiguously listed as 'other-license-specified' on Data.gov, lacking clear usage terms.
• The 'last updated' date of 2026-03-13 appears to be a future date, indicating potential metadata inaccuracy.

Provenance

Source

Scripps Institution of Oceanography (SIO) and NASA's Jet Propulsion Laboratory (JPL), under NASA's MEaSUREs SESES project.

Collection Method

Derived from continuous GNSS and seismogeodetic observations.

Time Range

Multi-decade (exact range not specified).

Freshness

2026-03-13 08:29:51.027900 (Data.gov), though this appears to be a future date.

Geography

Focus areas include Cascadia for transient deformation and the continental U.S. for water content; global coverage implied for GNSS time series.