Kelvin waves are difficult to see with the naked eye as they are large in scale, slow moving and don't break onshore like typical ocean waves. In this graphic, satellite radar altimetry measurements ...

The National Geodetic Survey is collecting aerial damage assessment images in the aftermath of Hurricane Isaias.

New cooperative agreements will enable U.S. IOOS regional associations to operate regional coastal observing systems throughout U.S. waters.

A team of NOAA aviators captured the images using specialized remote-sensing cameras aboard NOAA's King Air aircraft flying above the area at an altitude between 500 - 1,500 meters. NOAA's aerial ...

Have you ever looked at a map or nautical chart and noticed a circular symbol with arrows and letters? This is called a compass rose, and it’s used to indicate direction. A compass rose is an ...

Sea ice is frozen water that forms, expands, and melts in the ocean. It is different from icebergs, glaciers, ice sheets, and ice shelves, which originate on land. For the most part, sea ice expands ...

Using the Global Positioning System (GPS), every point on Earth can be given its own unique address—its latitude, longitude, and height. The U.S. Department of Defense developed GPS satellites as a ...

A North Atlantic right whale mother and calf spotted off the U.S. southern coast by NOAA researchers during the 2020 breeding season. Stellwagen Bank National Marine Sanctuary in Massachusetts is a ...

The lines seen here show the paths taken by ships using sonar to map small sections of the ocean floor in greater detail. The gridded-section shown above may look like streets in a small town, but is ...

The Castillo de San Marcos National Monument in St. Augustine, Florida, stands sentinel over Matanzas Bay. The coquina structure remains sturdy after three centuries. The natural coquina outcroppings ...