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Real-Time Database for high-resolution Neutron Monitor measurements. NMDB provides access to Neutron Monitor measurements from stations around the world. The goal of NMDB is to provide easy access to all Neutron Monitor measurements through an easy to use interface. NMDB provides access to real-time as well as historical data.
This web site is provided by the United States Geological Survey’s (USGS) Earthquake Hazards Program as part of our effort to reduce earthquake hazard in the United States. We are part of the USGS Hazards Mission Area and are the USGS component of the congressionally established, multi-agency National Earthquake Hazards Reduction Program (NEHRP).