PPT-Ocean Tides

CAPT Emil Petruncio US Naval Academy Oceanography Department Maury Project July 2016 Objectives Define terms used to describe tides List and define the forces that cause tides Describe tide measurements and the use of harmonic tidal constituents to predict tides. Tides. Tides Are the Longest of All Ocean . Waves, hence they are . Long waves. Tides Are Forced Waves Formed by Gravity and . Inertia. They are responsible for the rise and fall in sea level.. Tides . Parker MacCready, January 2011. Reference: . Admiralty Manual of Tides. , . Doodson. & Warburg, 1941, His Majesty’s Stationery Office. Orbital Force Balance. Tides are forced by the sun and moon, with similar physics. The Moon’s forcing is about twice that of the sun.. May 2013. What is a TIDE?. Rise and fall in ocean levels. Most observable at the coastlines. What is a TIDE?. 2 High tides and 2 Low tides occur daily. Approx. 6 1/2 hours apart. What causes TIDES?. Tides. Tides are the daily changes in the elevation of the ocean surface. Tides are the daily rise and fall of the Earth’s waters on its coastlines.. Tides are caused by the interaction of the Earth, the moon and the sun.. Section 3: Currents, Waves, and Tides. Earth Science. Mr. Margetan. . Ocean Currents. Surface Currents – Movement of water on the surface, primarily caused by winds. Ocean Currents. Longshore. Currents – Currents which run parallel to the shoreline due to energy released from waves. May 2013. What is a TIDE?. Rise and fall in ocean levels. Most observable at the coastlines. What is a TIDE?. 2 High tides and 2 Low tides occur daily. Approx. 6 1/2 hours apart. What causes TIDES?. Description of Waves. A wave is the rhythmic movement that carries energy through space or . matter. Waves are generated by wind flowing over the water . surface. As a wave passes, water moves up and down in a circular pattern – returning to its original position. 1. Water on Mars (. SciShow. ). https://www.youtube.com/watch?v=djcszDBsQkE. This a You Tube link for a brief . SciShow. that touches on the new research on Martian water (and a couple of other things as well). . Mean Low Tide versus Mean Lower Low Water. And the winner is……….!. Measuring Water Depths. Boats, Airborne LIDAR, Satellites, AUV’s/ROV’s – Differences?. Sensor Positioning. . GPS. Laser. How do we study them?. Have they always been here?. Oceanography. The scientific study of earth’s oceans. Ocean currents. Chemical composition. Seafloor sediments & topography. Marine life. How?. Created by Winds. Coriolis Effect- The shifting of ocean currents and surface winds from their expected paths caused by the rotation of the earth. Gulf Steam – ocean current in the northern Atlantic ocean, brings warm water from Africa to the Americas. Pg. 350. Oceans. Since ancient times, Oceans have provided many things:. Food. Trade Routes. Habitats. Exploring the Floor. Bathymetry. : is the study of depth contours on the ocean floor.. Sonar. . Sections:. The Motion in the Ocean: Waves, Tides, and . Currents. What . is “Seawater?”. Ocean Basics: Pressure, Density, Temperature, and Acoustics. Oceanic . Regions: The Open Ocean, Benthic Ocean, and Sea floor Zones. What celestial object is attracted to the Earth?. The Moon. What celestial object is the Earth attracted to?. The Sun. Effect of the moon on the Earth. The Moon’s gravity also pulls on the Earth, but because the Earth is solid, it doesn’t seem to respond..