Oceanographic Tools To Measure Currents Essay

1566 words - 6 pages

Introduction
The questions what causes polar ice to melt, variation in temperature at same latitudes, climate change and others have led meteorologist, ocean scientist and other researchers to investigate currents. According to the oxforddictionaries.com, a current is a body of water or air moving in a definite direction, especially through a surrounding body of water or air in which there is less movement. Currents can be generated both on the ocean surface flowing horizontally and sub surface flowing vertically. However these currents are generated by different factors. Horizontal currents are generated by the wind blowing across the ocean surface while vertical currents are generated by the density differences in water masses caused by temperature and salinity variation. To understand the significance of these currents researchers used a number of oceanographic tools which incorporates different techniques to measure them. The Lagrangian measurement incorporates all drifter measurements, which was named after the mathematician Joseph Louis Lagrange while the Eulerian measurement incorporates measuring currents of a fluid at only a given point and was named after Swiss mathematician Leonhard Euler (oceanservice.noaa.gov). Ocean currents are typically measured in Knots. According to NOAA ocean service education, Knot is defined as one nautical mile per hour and is used to measure speed (oceanservice.noaa.gov).
Oceanographic Tools to Measure Currents
Incorporating both the Lagrangian and Eulerian measurements allowed researchers to measure both surface and sub surface currents. The floating devices, which scientist call a ‘drifter’, to take the measure surface current as well as devices which scientist call a ‘profiling floats’ , that submerge to specific depth in the ocean to take the measure of deep water currents were both employed. Scientist also employed the use of Acoustic Doppler Current Profile or ADCP and Shore-based current meter to measure currents.
One of the simplest method oceanographers used in the past to measure wind driven surface currents velocity was the use of drifters. A person would stand on an anchored ship with a timer in the ocean and would release a floating device, usually a piece of wood in the water. That person would allow the device to float alongside the ship to reach a specific distance while measuring the amount of time elapse from the time of release to the point where he or she wants the floating device to reach. He or she would then take a note of the direction and would measure the distance the device have floated. After which that person would calculate the speed of the current by dividing the distance the floating device traveled by the time it took the floating device to travel that distance (oceanservice.noaa.gov). Finally that person would combine the speed of the current with the direction in which it moved to determine the current’s velocity. Modern technology has improved and allows the use of...

Find Another Essay On Oceanographic Tools to Measure Currents

This essay is about the natrual scientist, Charles Darwin. In this essay i will describe Darwins improtance to the science community

638 words - 3 pages The primary mission of the Beagle was to map the coastline of southern South America and take oceanographic measurements (currents, bathymetry, etc) as well. Darwin's job as the ship's naturalist was to observe everything, write it all down and collect as many specimens as possible. It was his job to record the weather, geological features, plants, animals, fossils, rocks, minerals, indigenous people and anything else that he saw. It was through

Our World's Oceans: Their Importance to Our Planet

6239 words - 25 pages moved down the gradual slope of the ridge with speeds of up to 45 miles per hour.Not only can underwater avalanches (technically termed: turbidity current) move suspended sediment but so can underwater currents. This current-pushed sediment can be compared to the alluvial soil we see deposited at the mouth of a river. In fact major and minor rivers extending far beyond what our eye can see can create similar and more steady currents underwater and

Modeling Ocean Acoustic Tomography

951 words - 4 pages anchored for several months gathering the changes within the water around them. These tools discovered variability within the water’s movements. The theories on slow, basin-scale currents were hidden by the domination of mesoscale fields. These fields are high energy flows that reach ten times the average velocity of major currents. These up-tempo movements relate to the out of water weather patterns. A mesoscale can be 100 square km in size and

Marketing Research Tools

1194 words - 5 pages researchers use qualitative and quantitative data gathering and then offer decision opportunities and recommend the right market research tools such as surveys of all types including online research, qualitative and quantitative research forums, interviews, and focus groups. Qualitative research is valuable and helps companies identify customer satisfaction, market segments, branding issues, and new product research. It is used to measure buyer’s

Description of Six Seawater Facts

924 words - 4 pages the ocean waters until all of the energy has dissipated. I learned that there were 3 layers to the ocean and the temperature is pretty much constant in the Deep Bottom water no matter the depth or location. Scientists have been studying our ocean and exploring the depths for a long time now. In my research I came across a program called Argo. Argo is a program that releases profiling floats that measure temperature and salinity. Most of today’s

IOOS: Integrated Ocean Observing System

3260 words - 13 pages increasing oceanographic studies that are being conducted. Many new experiments are being conducted on how the ocean affects our environment. This includes global warming and the study of whether or not “long-term changes in the oceans (are) naturally occurring, or…the result of human activities.”1 Without the knowledge of possible fluctuation of the ocean’s temperature and salinity (to name only two factors) over time, it is impossible to say if we

The Importance of Ocean Currents to Survival on Planet Earth

1959 words - 8 pages currents. Eddies are circular currents that form when an area gets surrounded by a larger current, a circular swirl or whirlpool forms. These eddies can cause an upwelling of nutrients from the ocean floor and are usually rich in aquatic life. These oceanographers have faith that modern technology will bring us advances in equipment to measure the intricacies of the ocean with greater accuracy. The ocean is without a doubt essential to planet

West African Contact

2251 words - 9 pages her topic would be. This research is important to the researcher as she sought to refresh her knowledge and to even learn more about the area of research. Information on this topic is easily accessible as there are many scholars who have done research under this field.Research QuestionsWhat archaeological, linguistic, botanical and oceanographic evidence is there to prove that the West Africans came to the Americas before 1492?What evidence was

Description of meteorology and different fields meterologists can work in

1726 words - 7 pages valuable to meteorologists. A special type of this instrument, the Doppler radar, which measures wind speed and direction, has become the best tool available to detect tornadoes and other severe weather conditions.Satellites, the next of the three tools, have developed greatly from the original ones, which could only provide pictures of earth's surface and its cloud cover. Currently, satellites use remote-sensing techniques to measure qualities

Destruction of Coral Reefs

950 words - 4 pages Barrier Reef. Coral reefs are quite important because they are the habitat of many marine lives and they maintain the quality of ocean water. (Duchesne)For the measurements of the coral reefs, biologists use the computers to measure the pH level of the water flow. It is really important to measure the response of the corals reefs to the ocean acidification. This is one of the biggest threats to the marine ecosystem. Human activities like

Motors and Generators.

1924 words - 8 pages to minimise eddy currents, minimising power loseMotors*Several types of motors designed specifically to run in AC*50 hertz AC supply reverse current 100 time a second*Synchronous motors operate at 50 hertzMain feature of the AC motor*An armature or rotor field structure*In some cases use slip ringsAC motors usually produce low power - relation to power tools*AC limits power supply to 50 hertz (~3000rpm)*Unsuitable for heavy machinery*In power

Similar Essays

Horizontal And Vertical Ocean Currents Essay

1526 words - 6 pages . Horizontal currents are wind driven, fast moving and carries small amount of water; while, vertical currents are slow moving, density driven and carries large bodies of water. In this paper I will describe horizontal and vertical currents, their importance and some of the tools used to measure ocean currents. Horizontal ocean current or surface ocean current Surface current are found in the upper four hundred meters (400m) and makes up about ten

Oceanography Essay

1666 words - 7 pages soundings to depths of 1500' and logged accurate observations of water tempature, currents and winds.13.) He wanted to find a route between America and England that wouldn't have such a long delay of news that travels between the two.14.) Mathew F. Maury founded the Naval Depot of Chart for the US Naval Hydrographic Offie, which is now knowsn as the US Naval Oceanographic Office; where he was a lieutenant. From reviewing ship's logs he was able to

"The Hungry Ocean": A Look At The Book And Oceanography.

912 words - 4 pages has little to do with sword fishing itself, but anyone that has to deal with the ocean needs to have a fairly concrete concept of ocean currents in order to understand where there are warmer waters and cooler waters.Ocean temperatures are one of the most important components in sword catching. This book emphasizes the importance of sensors that measure the surface temperature of the ocean, and the 'down temperature birds' that measure the

Oceanography As Viewed From Space Essay

1235 words - 5 pages Oceanography as Viewed from Space Introduction At first thought, studying the oceans from space seems to be a bizarre idea. Space observation helps oceanographers do research with manned and unmanned space systems. The space systems can be satellites and/or space shuttles that observe various features of the ocean such as sea-surface winds, sea-surface temperatures, waves, ocean currents, frontal regions, and sea color. Technological advances