What are spring and neap tides?

April 28, 2017

A spring tide—popularly known as a “King Tide”—refers to the ‘springing forth’ of the tide during new and full moon. A neap tide—seven days after a spring tide—refers to a period of moderate tides when […]

What is Ocean Acidification?

April 27, 2017

Ocean acidification refers to a reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide (CO2) from the atmosphere. For more than 200 years, or […]

What is a seiche?

April 25, 2017

A seiche is a standing wave oscillating in a body of water. If you have observed water sloshing back and forth in a swimming pool, bathtub, or cup of water, you may have witnessed a […]

How does climate change affect coral reefs?

March 15, 2017

The varied effects of climate change are changing the ocean; these changes dramatically affect coral reef ecosystems. Climate change is the greatest global threat to coral reef ecosystems. Scientific evidence now clearly indicates that the […]

What is an ocean current?

February 21, 2017

The term “current” describes the motion of the ocean. Ocean currents are driven by wind, water density differences, and tides. Oceanic currents describe the movement of water from one location to another. Currents are generally measured […]

What are the trade winds?

February 20, 2017

Early commerce to the Americas relied on the trade winds—the prevailing easterly winds that circle the Earth near the equator. Known to sailors around the world, the trade winds and associated ocean currents helped early […]

What are the horse latitudes?

February 17, 2017

The horse latitudes are subtropical regions known for calm winds and little precipitation. The horse latitudes are located at about 30 degrees north and south of the equator. It is common in this region of the […]

What are the doldrums?

February 16, 2017

The “doldrums” is a popular nautical term that refers to the belt around the Earth near the equator where sailing ships sometimes get stuck on windless waters. Known to sailors around the world as the […]

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