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Why ocean bathymetry?. How do we measure bathymetry? Why is ocean bathymetry important? Questions:

Published byWilla Sutton Modified over 9 years ago

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Presentation on theme: "Why ocean bathymetry?. How do we measure bathymetry? Why is ocean bathymetry important? Questions:"— Presentation transcript:

1 Why ocean bathymetry?

2 How do we measure bathymetry? Why is ocean bathymetry important? Questions:

3 How do we measure bathymetry?

4 What does it mean to be at an altitude of 4000 m? It mean that I am 4000 m above the Mean Sea Level (MSL)

5 Model of the shape of the Earth http://www.esri.com/news/arcuser/0703/geoid1of3.html http://en.wikipedia.org/wiki/Geoid geoid: The equipotential surface of the Earth's gravity field which best fits, in a least squares sense, global mean sea level (MSL)

6 The height of the Earth surface

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10 Why ocean bathymetry?

11 Ocean Circulation and Climate Heat Transport affected by topography!

12 Ocean Circulation and Climate Ocean Currents take different paths!

13 Ocean Circulation and Climate Deep ocean mixing and pathways

14 Ocean Circulation and Climate Mixing energy and dissipation of tides!

15 Ocean Circulation and Biology Seamounts ….

16 Societal impacts Tsunami

17 Societal impacts Gas and oil extraction

18 1) Reading material on Class Website Satellite Topography and Oceanography from Space 2) Homework #2 assigned. Before you go …

19 Understanding Isostacy and Buoyancy Exercise

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