SOES1012 Physics and Dynamics for Oceanography

Module Overview

This module provides the fundamental physics needed for marine science, and enables students to apply fundamental statistics methods in an oceanographic context.

Aims and Objectives

Module Aims

1) To introduce the basic principles of physics that are required in future modules, and demonstrate how the understanding of these principles is essential for the understanding of the motion of the ocean and atmosphere, as well as particles and organisms in seawater. 2) To provide experience of using these physical principles to solve problems in oceanography. 3) To introduce dynamical principles in oceanography. 4) To develop confidence at quantitative tasks.

Learning Outcomes

Having successfully completed this module you will be able to:

Describe, and write down equations for: - Newton’s laws of motion - Circular motion and conservation of angular momentum - Conservation of energy
Write down and explain the Navier-Stokes equations, identifying contexts in which the following terms are important: - Net acceleration - Acceleration due to gravity - Acceleration due to the pressure-gradient force - Acceleration due to the shear stress (frictional) force - Acceleration due to the Coriolis force
Qualitatively predict the motion of seawater and particles, under scenarios comparable to those encountered in the ocean, based on the above physical principles
Identify instances when turbulence may arise in oceanographic settings.
Explain the concept of dynamical diffusivity and apply this to solve problems in an oceanographic setting.
Solve quantitative problems in marine science based on physical and statistical principles.

Syllabus

Lecture topics: • Dimensions and units • Newton’s laws of motion • The gravitational force and the concept of geopotential height • The pressure gradient force I: buoyancy and hydrostatic balance • The pressure gradient force II: horizontal pressure gradients • The frictional force I: application to a fluid • The frictional force II: application to a solid within a fluid • Circular motion • The rotating Earth, the centrifugal force, and geopotentials revisited • The Coriolis force I: principles • The Coriolis force II: applications • Summary of forces in oceanography (The Navier-Stokes Equations) • Angular momentum and potential vorticity • Conservation of energy • Fundamental statistical properties • Error and error propagation • Frequency distributions, probability distributions, and outliers • The concept of statistical significance • Least-squares fitting and linear regression • Statistical tests • The impact of friction in a fluid • Turbulence in seawater • Diffusive properties of seawater • Wind driven ocean circulation

Learning and Teaching

Teaching and learning methods

Content will be taught by a combination of formal lectures and paper exercises, delivered in the same session as appropriate.

Type	Hours
Teaching	44
Independent Study	106
Total study time	150

Resources & Reading list

R statistical software. Software

Sadler, A. J. & Thorning, D. W. S (1996). Understanding Mechanics.

Course manual (provided by coordinator).

Lambourne, R. & Tinker, M. (2000). Basic Mathematics for the Physical Sciences.

Assessment

Summative

Method	Percentage contribution
Examination	70%
In-class Test	30%

Referral

Method	Percentage contribution
Examination	%