Tag: Technology

Natural History / Natural History - 11 months ago

What is a current survey?

Did you know? An Operational Forecast System provides a nowcast and forecast (up to 48 hours) of water levels, currents, salinity, water temperatures, and winds for a given area. These systems are located in coastal waters and the Great Lakes in...

Natural History / Natural History - 11 months ago

What is a backscatter?

VIDEO: How does backscatter help us understand the sea floor? Here's what you need to know in less than a minute. Transcript Backscatter is the reflection of a signal (such as sound waves or light) back in the direction from where it originat...

Natural History / Natural History - 1 year ago

What are the Totten Beacons?

The rusty remnants of a Totten Beacon (foreground) located near American Shoal lighthouse. Photo credit: M. Lawrence. Main beacon pile centered among three significantly shorter support posts. Photo credit: M. Lawrence. In 1513, Span...

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 marine biogeography?

Creating a habitat ecosystem map of the seafloor—a key component of marine biogeography—is a tricky process. Learn how it works in this two-minute video. Learn more. By mapping benthic habitats, studying what occurs on the bottom of a body...

Natural History / Natural History - 2 years ago

What is the Forchhammer's Principle?

A CTD (conductivity, temperature, and depth) device. The primary function of this tool is to detect how the conductivity and temperature of the water column changes relative to depth. Conductivity is a measure of how well a solution conducts elec...

Natural History / Natural History - 2 years ago

What is seaspeak?

Whether on the high seas or at port, misunderstood communication can lead to serious and even dangerous situations. "Seaspeak", the official language of the seas, helps to prevent miscommunication. Have you ever wondered how crews on ships at...

Natural History / Natural History - 2 years ago

What is a NOAA tide table?

This image shows daily tide predictions for Eastport, Maine, for January-February 1867. This page is from the first edition of a national annual tide table publication created in 1866 by the U.S. Coast Survey, a predecessor of NOAA. A tide tab...

Natural History / Natural History - 3 years ago

What is an ocean glider?

Scientists are now experimenting with using gliders to locate populations of spawning fish. The glider illustrated here is outfitted with an acoustic receiver to “listen” for vocalizations—grunting sounds—made by some fish as they mass togethe...

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...