Determining Earths historical/current conditions Flashcards
Proxy data and current data collection techniques
1
Q
What are six examples of proxy data collection methods
A
- Historical written records
- Coral
- Pollen
- Ice cores
- Tree rings
- Ocean and lake sediments
2
Q
What is proxy data
A
3
Q
What are the limitations of proxy data
A
- It can be biased & subjective
4
Q
What are the limitations of tree rings
A
- Dendrochronology can be damaging
- Trees are not found everywhere
-Trees that grow with low seasonality have constant growth - Only can go back a few years
5
Q
What are the limitations of collecting data from coral
A
Coral does not grow everywhere
Only can go back a few years
6
Q
What are the five modern data collection methods
A
7
Q
What are the disadvantages of modern methods
A
- Invasion of privacy
- Expensive and requires sophisticated equipment
8
Q
What are the advantages of modern methods
A
More accurate than proxy data
9
Q
What are the disadvantages of proxy methods
A
- Biased and subjective
- Can be damaging
10
Q
What are the advantages of proxy data
A
Helps us find out stuff about the climate from thousands of years ago
11
Q
A
