Site Map/Alternate Navigation Skip to Main Content

Data Collections

The NCEDC houses a wide collection of geophysical data, including earthquake catalogs, seismograms, GPS observations, strain, creep, and tilt data, and InSAR data. Most of these data are focused on northern and central California, but some collections span all of California or the western United States.

This document describes the data collection by type. Other documents describe the data by contributing network and by access. Or see the summary of products for an overview of the entire holdings.