OCG123 Lab 4-Atmospheric Circulation and Coriolis Effect

Quiz 4  This should be Quiz 3

1. Answer the following by circling the correct response.

a.   (Temperature, salinity) has a greater response on water density than (temperature , salinity).

b.  (Halocline, pycnocline) is the zone of rapid change in the salinity with increasing depth in the ocean water column.

c.    Ocean seawater density is (directly, inversely) proportional to salinity , but is (directly, inversely ) proportional to sea surface temperature.

d.   The net movement of water due to Ekman transport is (45 degrees, 90 degrees) from the direction of the wind.

e.    Where divergence occurs, (upwelling, downwelling) occurs.

2. (2points) What three processes contribute to a decrease in salinity? What two processes cause salinity to increase?

3 process that decrease salinity: 1) ice melting 2) precipitation 3) fresh water runoff

2 processes that increase salinity 1) evap >precipitation 2) ice formation

other (erosion of rocks from land)

3.What landmass does North Atlantic Deep Water form near?

Greenland

4. What process directly drives surface ocean currents?

Winds or atmospheric circulation

Density differences in water masses resulting from changes or differences in salinity or temperature or both. 

Thermohaline conveyor belt also acceptable