M2L1 - Environmental Change Flashcards
1
Q
Examples of measuring environmental change
A
- Oral history
- Remote sensing (satellites)
- Ice cores
- Sediment / ground cores
- Point sampling
- Quaternary geology observations and measurements
- Weather monitoring
2
Q
Oral histories
A
- Handed down between generations
- Based on experiences
- History shared via story telling
3
Q
Remote sensing
A
- Can be active or passive
- Examples include LiDAR, Radar, Hyperspectral analysis
4
Q
Passive remote sensing
A
Uses sensors that are not ground-
based to collect feflected or emitted radiation/energy measurements
5
Q
Active remote sensing
A
Uses sensors that are not ground-
based to collect the reflection of specifically sent signals to measure response
6
Q
Thicker tree rings
A
Means heavy rains or snow allowed for more growth that year
7
Q
Thinner tree rings
A
Drier years with less rain or snow, limiting growth
8
Q
Atypical or lop-sided tree rings
A
Indicate corrective growth from events like an avalanche
9
Q
Fire scars in tree rings
A
Tell us about the year, season, size, frequency and severity of fires
10
Q
Scale
A
- Temporal
- Spatial
- Physical
- Geography, often uniquely contemplates all three
11
Q
Temporal scale
A
- Time based
- Frequency or length of time related
- Change across time
- Some processes (ie mountain erosion) take place over 100s of years, others occur rapidly (hydrographic changes during flood)
12
Q
Spatial scale
A
- Different processes occur at different spatial scales
- Individual –> household –> community –> state –> nation –> international
13
Q
Physical / organismal scale
A
- From sub-cellular to ecosystem scale
- Interactions between levels is important
