Author Question: What is a characteristic of Antarctic Bottom Water? a. Extreme density b. The water moves south ... (Read 252 times)

vicky · **on:** Aug 22, 2018

What is a characteristic of Antarctic Bottom Water?
a. Extreme density
b. The water moves south towards Antarctica along the seafloor
c. Fast moving
d. Most is produced near the Mediterranean and joins the deep bottom layer

Question 2

What maintains the permanent thermocline found at all low and mid-latitudes?
a. Continual upwelling
b. Warm water currents
c. Density stratification
d. Downwelling

coyin · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

ANS: A
The Antarctic Bottom water moves very slowly. It may take a thousand years to reach the equator, but
it does move relatively faster in the Atlantic. This current has extreme density and is produced near
Antarctica. Information can be found in the section Thermohaline Circulation Affects All the Ocean's
Water.

Answer to Question 2

ANS: A
The thermohaline flow of water rises to the surface in temperate and tropical zones very gradually. It
sinks back down rapidly once it is in the colder waters at the poles. This diffuse upwelling of deep
water maintains the thermoclines. Information can be found in the section Thermohaline Circulation
Affects All the Ocean's Water.