Tag: Ocean Science

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 - 2 years ago

What is a maritime forest?

These stumps are evidence that trees once grew here, but due to a constantly changing shoreline, they are now mostly submerged in the ocean. Maritime forests are shoreline estuaries that grow along coastal barrier islands that support a great...

Natural History / Natural History - 3 years ago

What is a thermocline?

The red line in this illustration shows a typical seawater temperature profile. In the thermocline, temperature decreases rapidly from the mixed upper layer of the ocean (called the epipelagic zone) to much colder deep water in the thermocline (m...

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 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 a marsh organ?

An installed marsh organ at the Apalachicola National Estuarine Research Reserve in the Florida Panhandle. A NOS-sponsored project in the Gulf of Mexico employs the marsh organ to mimic sea level rise impacts on marsh vegetation and inform foreca...

Natural History / Natural History - 3 years ago

What is a turbidity current?

Turbidity currents can be caused by earthquakes, collapsing slopes, and other geological disturbances. Once set in motion, the turbid water rushes downward and can change the physical shape of the seafloor. Turbidity is a measure of the level...

Natural History / Natural History - 3 years ago

What is blue carbon?

Yes, this is an image of a mangrove, but did you know it is also an image of a sink? A carbon sink. Don’t know what that is? Read below. Something that has a significant effect on our daily lives and is stored within the largest system of wate...

Natural History / Natural History - 4 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...