.. _glacier_lowpass:

Glacier as low-pass filters
===========================

.. figure:: https://raw.githubusercontent.com/OGGM/glacier-graphics/master/glacier_response/png/tau_04.png

A collection of free glacier graphics that can be used for education and
outreach.


**License**: `Creative Commons Attribution-ShareAlike 4.0 International License <https://creativecommons.org/licenses/by-sa/4.0/>`_

.. figure:: https://licensebuttons.net/l/by-sa/4.0/88x31.png
    :target: https://creativecommons.org/licenses/by-sa/4.0/


Feel free to use / adapt the graphics, but always refer to the original author
and share them with a compatible license.

**Author**: Fabien Maussion with the `OGGM <http://oggm.org>`_ model.

**Code**: `on GitHub <https://github.com/OGGM/oggm-edu-notebooks/blob/master/graphics/ela_changes_response_time.ipynb>`_

**Interactive notebook**: `MyBinder link <https://mybinder.org/v2/gh/OGGM/binder/stable?urlpath=git-pull?repo=https://github.com/OGGM/oggm-edu-notebooks%26amp%3Bbranch=master%26amp%3Burlpath=lab/tree/oggm-edu-notebooks/graphics/ela_changes_response_time.ipynb%3Fautodecode>`_

**Image download**: `zip file <https://github.com/OGGM/glacier-graphics/blob/master/glacier_response/glacier_response.zip>`_

This series of graphics was used right after the graphics above to explain
the concepts of **response time** (or time constant) and **low-pass filter**.

There are several stages to click through (useful for presentations):

.. figure:: https://raw.githubusercontent.com/OGGM/glacier-graphics/master/glacier_response/png/tau_01.png
    :target: https://raw.githubusercontent.com/OGGM/glacier-graphics/master/glacier_response/png/tau_01.png


.. figure:: https://raw.githubusercontent.com/OGGM/glacier-graphics/master/glacier_response/png/tau_02.png
    :target: https://raw.githubusercontent.com/OGGM/glacier-graphics/master/glacier_response/png/tau_02.png


.. figure:: https://raw.githubusercontent.com/OGGM/glacier-graphics/master/glacier_response/png/tau_03.png
    :target: https://raw.githubusercontent.com/OGGM/glacier-graphics/master/glacier_response/png/tau_03.png


.. figure:: https://raw.githubusercontent.com/OGGM/glacier-graphics/master/glacier_response/png/tau_04.png
    :target: https://raw.githubusercontent.com/OGGM/glacier-graphics/master/glacier_response/png/tau_04.png