ENVIRONMENTS SHAPED BY EXTREME NATURAL EVENTS
What is an Earthquake
Earthquakes are vibrations caused by earth movements at plate boundaries and at major fault lines (cracks in the earth’s surface).
Have there been any earthquakes in New Zealand today? Click here to find out.
Click here to see the different types of plate movements.
Have there been any earthquakes in New Zealand today? Click here to find out.
Click here to see the different types of plate movements.
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Earthquake Songs
Who knew there were so many songs about how the processes of an Earthquake ...
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Key Words - Processes that operate to create an Earthquake
There are a lot of words to learn in relation to the processes that operate to create an Earthquake. Use the quiz below to test yourself.
CASE STUDY: 2011 Christchurch Earthquake
Our case study is February 2011 Earthquake in Christchurch with a focus on the CBD, the suburbs by the Avon River and the suburbs surrounding the Port Hills
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Processes that produced the 2011 CHRISTCHURCH Earthquake
When writing about the processes that produced the 2011 earthquake in Christchurch, remember to include all the following key words/terms in your explanation:
•Basalt Rock
•Lyttelton Fault
•Magnitude
•P Waves
•Port Hills
•Rupture
•Sediment
•Shallow/shallowness
•Strike/slip
•Surface Waves
Click here to see the map of when the 2011 quake hit Christchurch
•Basalt Rock
•Lyttelton Fault
•Magnitude
•P Waves
•Port Hills
•Rupture
•Sediment
•Shallow/shallowness
•Strike/slip
•Surface Waves
Click here to see the map of when the 2011 quake hit Christchurch
Why CHRISTCHURCH was vulnerable to an Earthquake
There are many reasons why Christchurch was vulnerable to an earthquake - natural and cultural reasons. Go back over your notes in your book to make sure you clearly understand these reasons (sediment type, water table, population density, building codes). This video below is one you watched in class and is from 1996. It explains how vulnerable the buildings are to a quake - especially the parapets.
Effects of the 2011 CHRISTCHURCH Earthquake on the Natural Environment
There were 3 key effects of the quake on the natural environment/land:
1. Vertical and Horizonal land displacement - (Horizontal:In the suburbs north of the Lyttleton Fault – Bexley, Aranui, New Brighton AND Vertical: The Port Hills and Lyttelton)
1. Vertical and Horizonal land displacement - (Horizontal:In the suburbs north of the Lyttleton Fault – Bexley, Aranui, New Brighton AND Vertical: The Port Hills and Lyttelton)
2. Landslips and Rock Collapses - In the suburbs located around the Port HIlls (Lyttelton and Sumner)
3. Liquefaction - in the suburbs around the Avon River such as Bexley, Aranui, New Brighton and in parts of the CBD.
3. Liquefaction - in the suburbs around the Avon River such as Bexley, Aranui, New Brighton and in parts of the CBD.
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Effects of the 2011 CHRISTCHURCH Earthquake on the Cultural environment
Cultural can be divided into:
SOCIAL - Social relates to people’s health, education, recreation, lifestyles, relationships to others.
ECONOMIC - Economic relates to all aspects of business including jobs, income, profits, trade, resources, transport etc.
This 15 minute video below, is from a few days after the 2011 quake and looks at many of the cultural effects.
The Red Zone
The Red zone is an area that is unsafe for people or has buildings that are unsafe. The Christchurch CBD was a large redzone after the earthquake. It has reduced in size over time as buildings are demolished. Click here to see how it has reduced in size in the last 2 years.
Other effects
The earthquake had numerous impacts on the cultural environment. In class you were asked to note down these impacts under the headings 'Education', 'Stress', 'Crime' and 'Tourism'. If you didn't finish this, download the articles below:
| articles_cultural_effects_of_2011_eq.pdf |
Destroyed Heritage Buildings
Many heritage buildings in the CBD have had to be demolished due to Earthquake damage. Click here to see how the buildings have changed
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Positive effects of the Earthquake on the Cultural Environment
There are a few positive effects on the cultural environment. One is the new Cashel Street Container Mall. This video explains why it was built in the destroyed area of the CBD.
How different groups of people have responded to the effects of the 2011 CHRISTCHURCH Earthquake
Groups of people responded in different ways to the effects of the 2011 Earthquake. Below are links to 9 different groups of people who all played a vital role after the Earthquake. Some were involved in the days and weeks after the quake, others are still involved today. For each group you need to have some specific information that you can use in an exam answer. The links (click on the picture) take you to just one website. You might find more info via newspaper articles from February 2011 by searching on Google.
Ms Andrews Semester One class - use the Google Drive document that i have sent you via email and complete it (your name is above 3 of the groups below in the document. Two other people will do the other 6 groups). You just type in your answers (DO NOT cut and paste from the internet as you will then have too much info and you need it in your own words) and at the end of the activity you will have done 33% of the work but have 100% of the answers.
Ms Andrews Semester One class - use the Google Drive document that i have sent you via email and complete it (your name is above 3 of the groups below in the document. Two other people will do the other 6 groups). You just type in your answers (DO NOT cut and paste from the internet as you will then have too much info and you need it in your own words) and at the end of the activity you will have done 33% of the work but have 100% of the answers.
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(this link will take you to the NZ Defence Force 'Media' page. Scroll down to 'February' for Earthquake updates.)
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