ATM 107 The Oceans

Ch. 8 – Circ. & Ocean Structure

Friday, 23 October 2015

Daily Announcements:

1) Exam #2 Review Class is Friday, Oct. 30, 2:45-3:30 PM, LC-18.

2) Exam #2 is Monday, Nov. 2. (Bring #2 pencils, pencil sharpener, eraser.)

3) Exam #2: Ch. 5, 6, 7 & 8 and lecture material (videos too!)

Song #1: “The Ocean” by Led Zeppelin

Song #2: “Here Comes the Rain Again” by Eurythmics

Text Source Today: 8.1, 8.2, 8.3

· Density Driven Circulation Notes Template

· Thermohaline Circulation PDF DOC

· Sigma-t (σ-t)

· Upwelling and Downwelling

· The Layered Ocean

Study Guide Material (Stacey’s Guide) :

1) What condition (stable, unstable, neutral) produces a “density driven circulation?”

2) What is the “thermohaline circulation?” What is the primary driving force?

3) How does each season affect the temperature structure of the upper (shallow)

part of the thermocline?

4) Why does melting ice in polar regions create a “freshwater lid” in the top layer?

5) What is “sigma-t?” Be able to convert a sea water density to a “sigma-t” value.

6) What is an “upwelling zone?” What creates “upwelling” of ocean water?

7) What is a “downwelling zone?” What creates “downwelling” of ocean water?

8) What are the benefits of “upwelling” and “downwelling” to sea life”

9) What determines the “structure” (or water type) of the layered ocean?

10)Why are “temperature-salinity diagrams” useful? What do they tell us about

the major oceans and neighboring large seas (Mediterranean & Red Seas)?