PPT-Physical Geography Wind And Ocean Currents

By Sean Meisner Amanda Onwukwe Arrian Bolden Pd2nd What Is Wind Wind Is air moving across the surface of the Earth Wind occurs because sunlight heats the earths atmosphere and surface unevenly. Rockefeller Jr Memorial PKWY Big Hole NB Cowpens NB Fort Donelson NB Fort Necessity NB Moores Creek NB Petersburg NB Stones River NB Tupelo NB Wilsons Creek NB Kennesaw Mountain NBP Richmond NBP Brices Cross Roads NBS Chickamauga and Chattanooga NMP Early ocean studies. For much of human history, knowledge of the ocean and its currents was not recorded for many reasons - most sailors could not write and information was passed orally.. European nations began systematic ocean explorations but kept information secret between the 15. Susan Howard. Earth & Space Research. Basically – why and how the ocean and atmosphere MOVE!. www.ametsoc.org . There are many scales of motion: . From . BIG. . to . very small. Today – I will just cover the basic large scale, GLOBAL circulation..  .  . . Waves. When directly generated and affected by local winds, a wind wave system is called a wind sea. After the wind ceases to blow, wind waves are called swells. More generally, a swell consists of wind generated waves that are not significantly affected by the local wind at that time. They have been created elsewhere or a long time ago. Wind waves on the ocean are called ocean waves. These wind waves can also have a negative effect, where on . s. Warm. . currents flow . away. from the . equator.. Cold. currents flow . toward. the . equator.. Ocean Currents. Sun. Wind. Coriolis. Effect. Gravity. Factors Influencing Currents. Energy from the Sun heats the water.. Submarine Relief. Hydrosphere. 71% of total surface of the earth. Term ‘sea’ used for water bodies close to continental margins. Great mass of water surrounding oceans called ‘oceans’. Submarine relief. The Earth is Spinning…. Because Earth spins, winds and water appear to be deflected in a curved motion. This is called the Coriolis Effect. Which way do things. not connected to . Earth get deflected . Global winds. Ocean Currents . Local winds. Coriolis Effect. Because the Earth rotates, and consists of a mixture of land and sea, the . Coriolis Effect . exists. The . Coriolis Effect. is the movement of particles (such as air) to the right in the Northern Hemisphere. Highways in the Sea. What forces are responsible for currents?. Wind. : transfers energy through friction on surface; causes currents and waves. Sea level. : steeper slope=greater pressure gradient=drives a larger, faster current. wind, salinity, temperature, the Coriolis Effect, and gravitational pull.. 14)Ocean . currents flow in . predictable patterns. around the earth.. 15) Differences . in . density. and . temperature. causes currents.. This book belongs to: Ms. Ashmead Mississippi State Objective: 4c. Describe the causes and effects of heat transfer as it relates to the circulation of ocean currents, atmospheric movement, and global wind patterns (e.g., trade winds and the jet stream). Provide examples of how these global patterns can affect local weather. salinity stratification. fresh/saltwater interface. upwelling. tides. PUBLIC. recreation, . tourism, fishing. interest groups (divers, surfers). drinking water. treated-wastewater release. For much of human history, knowledge of the ocean and its currents was not recorded for many reasons - most sailors could not write and information was passed orally.. European nations began systematic ocean explorations but kept information secret between the 15. Chapter 14. Page 364 – 387. Currents. Imagine that you are stranded on a desert island. You stuff a distress message into a bottle & throw it into the ocean, hoping it will find its way to someone who will send help. .