Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
The USGS has been monitoring the Bartlett Springs fault and Maacama fault with continuous and campaign GPS instruments since 2006. GPS and alinement arrays around these faults are designed to capture long-term movements as well as shallow creep rates.
Public Domain.
