Skip to main content
U.S. flag

An official website of the United States government

Science

The USGS provides science about natural hazards that threaten lives and livelihoods; the water, energy, minerals, and other natural resources we rely on; the health of our ecosystems and environment; and the impacts of climate and land-use change. Our scientists develop new methods and tools to supply timely, relevant, and useful information about the Earth and its processes. Learn more below.

link

Types of Water

link

How We Use Water

link

Measuring and Monitoring Water

link

Aquatic Biology and Ecosystems

link

Common Water Issues

link

Essential Tools and Products

link

Advanced Capabilities and Research

FAQs

Are earthquakes associated with variations in the geomagnetic field?

Electromagnetic variations have been observed after earthquakes, but despite decades of work, there is no convincing evidence of electromagnetic precursors to earthquakes. It is worth acknowledging that geophysicists would actually love to demonstrate the reality of such precursors, especially if they could be used for reliably predicting earthquakes! Learn more: USGS Geomagnetism Program

link

Are earthquakes associated with variations in the geomagnetic field?

Electromagnetic variations have been observed after earthquakes, but despite decades of work, there is no convincing evidence of electromagnetic precursors to earthquakes. It is worth acknowledging that geophysicists would actually love to demonstrate the reality of such precursors, especially if they could be used for reliably predicting earthquakes! Learn more: USGS Geomagnetism Program

Learn More

Do solar flares or magnetic storms (space weather) cause earthquakes?

Solar flares and magnetic storms belong to a set of phenomena known collectively as "space weather". Technological systems and the activities of modern civilization can be affected by changing space-weather conditions. However, it has never been demonstrated that there is a causal relationship between space weather and earthquakes. Indeed, over the course of the Sun's 11-year variable cycle, the...

link

Do solar flares or magnetic storms (space weather) cause earthquakes?

Solar flares and magnetic storms belong to a set of phenomena known collectively as "space weather". Technological systems and the activities of modern civilization can be affected by changing space-weather conditions. However, it has never been demonstrated that there is a causal relationship between space weather and earthquakes. Indeed, over the course of the Sun's 11-year variable cycle, the...

Learn More

Could magnetic reversals be caused by meteorite or comet impacts?

Although extremely unlikely, it might be possible for a reversal of the Earth's magnetic field to be triggered by a meteorite or comet impact, or even for it to be caused by something more "gentle," such as the melting of the polar ice caps. Self-contained dynamic systems like Earth’s dynamo can have reversals without any outside influence. Reversals of Earth's magnetic field can simply happen...

link

Could magnetic reversals be caused by meteorite or comet impacts?

Although extremely unlikely, it might be possible for a reversal of the Earth's magnetic field to be triggered by a meteorite or comet impact, or even for it to be caused by something more "gentle," such as the melting of the polar ice caps. Self-contained dynamic systems like Earth’s dynamo can have reversals without any outside influence. Reversals of Earth's magnetic field can simply happen...

Learn More

Education

USGS On The Road

Watch all episodes of USGS On The Road, a web-series about USGS scientists and water science from all corners of Maryland, Delaware, and DC.

link

USGS On The Road

Watch all episodes of USGS On The Road, a web-series about USGS scientists and water science from all corners of Maryland, Delaware, and DC.

Learn More

Karst Interest Group (KIG) Workshop

The Karst Interest Group’s (KIG) mission is to encourage and support inter-disciplinary collaboration and technology transfer among scientists working in karst areas.

The 9th USGS Karst Interest Group is planned for October 22-24, 2024 in Nashville, TN.   

link

Karst Interest Group (KIG) Workshop

The Karst Interest Group’s (KIG) mission is to encourage and support inter-disciplinary collaboration and technology transfer among scientists working in karst areas.

The 9th USGS Karst Interest Group is planned for October 22-24, 2024 in Nashville, TN.   

Learn More

Water Science School

Welcome to the U.S. Geological Survey's (USGS) Water Science School. We offer information on many aspects of water, along with pictures, data, maps, and an interactive center where you can give opinions and test your water knowledge.

link

Water Science School

Welcome to the U.S. Geological Survey's (USGS) Water Science School. We offer information on many aspects of water, along with pictures, data, maps, and an interactive center where you can give opinions and test your water knowledge.

Learn More