The Density of Seawater - Mrs. McPherson's Web Page

The Density of Seawater - Mrs. McPherson's Web Page

The 3 Clinesof Seawater The 3 Clines: Thermocline: Transition layer between the mixed layer at the surface and the deep

water layer. The definitions of these layers are based on temperature (surface water is warmer due to suns radiation). Halocline: Cline caused by a strong, vertical salinity gradient within a body of water.

Since salinity (along with temperature) affects the density of seawater, it can play a role in its vertical stratification. Pycnocline: Cline (or layer) where the density gradient (z) is greatest within a body of water.

Variation of Temperature with Depth Thermocline Graphs Sun warms the surface Cold at depth

Cold everywhere Isothermal: Where there is

not a strong change in temperature (Thermocline is absent)

Thermocline graphs are also controlled by latitudes. (Why?) Thermocline graphs are also controlled by the seasons. (Why?)

Density Zones The ocean is broken into density zones The 3 density zones are controlled by: Temperature salinity

Zone 1: Surface zone the upper layer of the ocean, least dense of all seawater. (2%) Zone 2: Pycnocline the density of the water increases with depth.(18%)

Zone 3: Deep zone Ocean water density is constant in this layer. (80%) Density Zones in the Ocean

The Ocean Is Stratified into Three Density Zones by Temperature and Salinity Density increases rapidly with depth in the pycnocline.

Below the pycnocline lies the deep zone of cold, dense water. As the water gets deeper, the temperature decreases

As the water gets deeper, the salinity increases more dissolved Pycnocline graphs are also controlled by latitude

Why? Explain these graphs .. And explain how the Pynocline graph is the opposite of the Thermocline graph. The relationship between temperature and

salinity of seawater controls the density of seawater.(Explain this trend) Surface Water Controls Global Temperature

Density depends on Latitude There is no pycnocline in the higher latitudes, Why? Pycno = density cline = slope

Explain these graphs .. And explain how the Pynocline graph is the opposite of the Thermocline graph. Temperature and Salinity The relationship between

temperature and salinity of seawater controls the density of seawater. Explain this trend Surface Water and Global

Temperature What is responsible for bringing warm water to Stornoway? What is responsible for bringing cold water to

Hopedale? What area is still Glacial? What might happen if the warm current stops getting to Stornoway?

Water and Evaporation Water has the highest Heat of Vaporization of any known substance. Before A ice is forming Between A and B ice is absorbing

energy to start melting but the temperature stays the same Between C and D, water is storing energy to evaporate but does not change temperature After D, water evaporates

General Idea: It takes much more energy for liquid water to evaporate than for liquid

water to freeze. During the Vaporization and Latent stages the temperature of the water does not

change. Water Removes Heat from Surfaces As It Evaporates Heat Capacity of Water

Water has a very high heat capacity, which means it can absorb huge amounts of heat. Not all substances have the same heat capacity

Waters Temperature Affects Its Density Solid, Liquid and Gas

Solid Crystals of frozen water have an unique shape . This causes water to expand when it freezes to forms ice.

This also makes ice less dense causing ice to float on seawater What would happen if ice did not float but sank to the bottom of lakes

during the winter?

Recently Viewed Presentations

  • POETIC ELEMENTS - NOTES ALLITERATION EXAMPLES:  Come and

    POETIC ELEMENTS - NOTES ALLITERATION EXAMPLES: Come and

    ALLUSION. EXAMPLES: His nose was growing like Pinocchio's. He was a real Romeo with the ladies. Chocolate was her Achille's heel. I thought the software would be useful, but it was a Trojan Horse.
  • The Solar System

    The Solar System

    Neptune's largest moon, Triton, gets colder than Pluto. Pluto Pluto is so far away that is it difficult for scientists to learn about it. The outer fringes of our solar system await close-up observations by a robotic space flight mission....
  • The Nature of Light - GSU P&A

    The Nature of Light - GSU P&A

    Arial MS Pゴシック ヒラギノ角ゴ Pro W3 Symbol Helvetica Times New Roman Times Blank Presentation Microsoft Equation THE NATURE OF LIGHT First, the Wave Nature Transverse Electromagnetic (EM) Wave Electric and Magnetic Fields Characteristics of All Waves Key Relations for ALL...
  • The Frontal lobes Executive functions and Impulse control

    The Frontal lobes Executive functions and Impulse control

    The limbic/emotional brain generally refers to amygdala, hippocampal formation, hypothalamus, thalamus, and nearby "paralimbic" cortex, such as the anterior cingulate cortex, orbitofrontal cortex insula, and temporal poles Given the role of aberrant, intrusive, emotional memory in PTSD symptomatology, the limbic...
  • HRD Audit

    HRD Audit

    It is a Comprehensive Evaluation of Human Resource Development Strategies, Systems and Practices, Structures and Competencies Styles and Culture And their appropriateness to achieve the short and long term business goals of the organization Methodology of HRD Audit Examines long...
  • CS1315: Introduction to Media Computation

    CS1315: Introduction to Media Computation

    JES - Jython Environment for Students Use Window Layout to get the view you want Tour of JES Save and Save As Cut/Copy/Paste with shortcut keys Help If JES runs slow, close other applications. Web browsers (like Firefox or Internet...
  • NOTES 2.1: One-Dimensional Motion

    NOTES 2.1: One-Dimensional Motion

    OBJECTIVES: Recognize that the vertical and horizontal motions of a projectile are independent. Relate the height, time in the air, and initial vertical velocity of a projectile using its vertical motion, and then determine the range using the horizontal motion.
  • Kaszubi - historia, język, tożsamość.

    Kaszubi - historia, język, tożsamość.

    Kashubs' homeland spanedalmost across entire Pomerania - From the lower reaches of the Vistula river in the east, as far as today's German . Vorpommern in the west and the to the river Notec in the south.