Lesson 4 overview
=================

This week we encounter our second common geoscience equation, the advection equation.
Similar to last week, we will start with a short lecture about the advection equation and its application to modelling river erosion.
There are also some notes posted for how to solve the advection-diffusion equation, which again may be of interest for the exercise this week.
As usual we will finish with the exercise for this week.

1. :doc:`Geological advection lecture slides <geological-advection>`
2. :doc:`Solving the advection-diffusion equation <solving-advection>`
3. :doc:`Erosion, sedimentation, and heat transfer lecture slides <advection-heat-transfer>`
4. :doc:`Exercise 4 <exercise-4>`

Learning objectives
-------------------

After completing this week's lesson you should be able to:

- Explain the general concept of advection and how is it defined mathematically
- Give examples of geological processes that can be modelled using the advection equation

Lesson videos
-------------

    .. admonition:: Lesson 4.1 - Geological advection, advection-diffusion equation

        .. raw:: html

            <iframe width="560" height="315" src="https://www.youtube.com/embed/56194zprE2U" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
            <p>Dave Whipp, University of Helsinki <a href="https://www.youtube.com/channel/UClNYqKkR-lRWyn7jes0Khcw">@ Quantitative Geology channel on Youtube</a>.</p>

    .. admonition:: Lesson 4.2 - Erosion, sedimentation, and heat transfer

        .. raw:: html

            <iframe width="560" height="315" src="https://www.youtube.com/embed/5hp7U6RAEaM" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
            <p>Dave Whipp, University of Helsinki <a href="https://www.youtube.com/channel/UClNYqKkR-lRWyn7jes0Khcw">@ Quantitative Geology channel on Youtube</a>.</p>