Tag: Economy

Natural History / Natural History - 9 months ago

What is high tide flooding?

As relative sea level increases, it no longer takes a strong storm or a hurricane to cause coastal flooding. Flooding now occurs with high tides in many locations due to climate-related sea level rise, land subsidence, and the loss of natural barrie...

Natural History / Natural History - 1 year ago

What are the trade winds?

The Charles W. Morgan is the last of an American whaling fleet that once numbered more than 2,700 vessels. Ships like the Morgan often used routes defined by the trade winds to navigate the oceans. Known to sailors around the world, the trade...

Natural History / Natural History - 2 years ago

What is an oil spill trajectory?

VIDEO: Predicting where oil may go in the water is no easy task. Here's what you need to know in a minute. Transcript During the threat of an oil spill, responders need to know where that spilled oil will go in order to protect shorelines wi...

Natural History / Natural History - 2 years ago

What is GPS?

The GPS Block IIR(M) Satellite shown here is one of the various generations of GPS satellites orbiting the Earth. GPS satellites fly in medium Earth orbit at an altitude of approximately 12,550 miles. Each satellite circles the Earth twice a day....

Natural History / Natural History - 2 years ago

What is the Great Loop?

Boating along the Erie Canal, part of the Great Loop (image courtesy of Gladys L. Buzzell). The Great Loop is a continuous waterway that recreational mariners can travel that includes part of the Atlantic, Gulf Intracoastal Waterways, the Grea...

Natural History / Natural History - 3 years ago

What is HAZMAT?

In January 2010, a crude oil tanker (T/V Eagle Otome) and a barge collided in Port Arthur, Texas. Oil spilled during this incident is an example of hazardous material, or HAZMAT. Under the National Contingency Plan, NOAA provides scientific suppo...

Natural History / Natural History - 3 years ago

What is aquaculture?

VIDEO: What is aquaculture? Here's what you need to know in less than a minute. Transcript As the demand for seafood has increased, technology has made it possible to grow food in coastal marine waters and the open ocean. Aquaculture is a me...

Natural History / Natural History - 3 years ago

What is nuisance flooding?

As relative sea level increases, it no longer takes a strong storm or a hurricane to cause coastal flooding. Flooding now occurs with high tides in many locations due to climate-related sea level rise, land subsidence, and the loss of natural barrie...

Natural History / Natural History - 4 years ago

When Was the First Earth Day?

Firefighters battle a fire on Ohio's Cuyahoga River in 1952. The polluted river caught fire on several occasions between 1936 and 1969, when debris and oil had concentrated on the water's surface and ignited. A blaze in 1969 came at a time of inc...

Natural History / Natural History - 4 years ago

What is dredging?

As sand and silt washes downstream, sedimentation gradually fill channels and harbors. This material must be periodically removed by dredging. Dredging is the removal of sediments and debris from the bottom of lakes, rivers, harbors, and other...