Key Terms Flashcards
1
Q
Dams
A
- planned obstructions across cross-profile of river
2
Q
Centre-pivot irrigation schemes
A
- involves ‘arm’ that rotates around a central pivot + waters land it passes
3
Q
Recurrence interval
A
- regular floods of a given size
4
Q
Flash flood
A
- flood where lag time is v. short (hrs or mins)
5
Q
Depression
A
- region of low atmospheric pressure
6
Q
Weather satellites
A
- form of remote sensing
- collects data ab Earth’s weather from space
7
Q
Loss-sharing
A
- form of compensation for those affected by natural hazards
- inc. disaster aid + insurance
8
Q
Disaster aid
A
- any money, equipment or personnel given or donated to a community after a natural disaster
9
Q
Insurance
A
- scheme where ppl pay premiums into a scheme so if affected by a natural disaster they may receive financial compensation
10
Q
Straightened channels
A
- low sinuosity + generally made wider or deeper so can remove excess water during floods
11
Q
Reservoirs
A
- area that store water, often behind dams
12
Q
Event modification
A
- attempt to change physical events by envi. control
13
Q
Flood abatement
A
- dec amount of water entering a river + so dec. flood peak
14
Q
Drainage basin
A
- total area contributing water to a river
15
Q
Flood diversion
A
- allows certain areas (e.g. wetlands) to be flooded so dec. flood risk in other locations
