Geodetic Facility for the Advancement of Geoscience

The Geodetic Facility for the Advancement of Geoscience (GAGE) is a geophysical facility for geoscience research and education. It focuses on research of our planet's surface deformation with unprecedented temporal and spatial resolution. GAGE is one of the two premier geophysical facilities in support of geoscience and geoscience education of the National Science Foundation (NSF). The other premiere geophysical facility is SAGE, the Seismological Facility for the Advancement of Geoscience.

It operates and maintains the Network of the Americas (NOTA) and provides support to Antarctica research with it support of Antarctic Network (ANET). It is operated by the EarthScope Consortium. Its previous operator was UNAVCO, until its merger with the Incorporated Research Institutions for Seismology (IRIS) to become the EarthScope Consortium.

Network of the America (NOTA)
GAGE's Network of the Americas (NOTA) is an international network of geophysical sensors. The network spans more than 20 countries. It is composed of more than 1,200 continuously operating instruments, which include:


 * High precision GPS (Global Positioning System) stations
 * Multi-constellation GNSS (Global Navigation Satellite System) stations
 * Borehole strain instruments
 * Seismic instruments
 * Tilt instruments

The network stretches from the Aleutian Islands to the Caribbean.

The network can measure with precision:


 * The slow movement of tectonic plates
 * The sudden movement of earthquakes

It is composed of the following networks:


 * The Plate Boundary Observatory (PBO), which spans Alaska, the continental US, and Puerto Rico.
 * TLALOCNet, which consists of 40 stations in Mexico.
 * COCONet, which consists of 85 stations spanning the Caribbean.

The NASA GNSS Program
GAGE assists in the NASA Global Navigation Satellite System (GNSS) program. The NASA Earth Surface and Interior Focus Area, which is part of the Earth Sciences Division, provides funding for programs such as this.