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Flashcards in Brahmaputra Deck (26)
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1

What is being generated to reduce flood risk in Bangladesh

Flood hazards maps, to show main threat areas

2

What is common with Bangladesh river systems?

Very small and intricate streams

3

Where does 90% of river flow originate from in Bangladesh?

India, Nepal, Bhutan and China

4

What does annual rainfall vary between in Bangladesh?

1250mm - 5700mm

5

What % of Bangladesh is Floodplains?

80%

6

What do floods damages in Bangladesh?

Agricultural production, Infrastructure damage, People displacement

7

What are the main causes of Bangladesh floods

Inflows from Up stream catchments, low flood plain gradients, cyclonic storm surges, coastal floods, poor drainage and confluence of rivers.

8

Why are many houses still built on the flood plain?

No knowledge of floodplain footprint, huge demand

9

What main rivers surround the southwest region of Bangladesh?

Haribhanga, Meghna, Ganges

10

In the south wester area how many large and small rivers are there?

10 large and 18 small

11

How many junctions and branches does the Southwest region have?

36, junctions and 58 branches

12

What is the Flood hazard calculated from?

Amount of damage done to an area, (e.g damage to services)

13

In the south west region on Bangladesh, what is the variation of population density?

1398, PPKM and 84 PPKM

14

How is the Magnitude of risk calculated for a hazard map?

Expected level of damage + loss of human lives

15

What determines how long it takes for a government to respond to a disaster?

The repetition or scale of the event

16

How many people died in the Brahmaputra flood in 1970?

225,000

17

What will climate change lead to? (Immerzeel 2008)

Intensification of the global hydrological cycle

18

What is the main source of the Brahmaputra and why is it expected to increase flow during climate change?

Himalayas, increased ice melt

19

Which glacier does the Brahmaputra come from?

Kailash

20

Why will an increase in water impact the Brahmaputra?

It will harm farming processes

21

What would increase in ice melt lead to?

Increase in summer flows

22

What is the avarice rate of warming per year in the Brahmaputra basin?

0.6 c

23

How much is the Tibetan Platau warming by?

1.1 c a year

24

What is the expected precipitation increase expected to be by 2100

22%

25

By 2080 what is expected to be the temperature increase in the Himalayas region?

3-3.5 degrees

26

What could precipitation increase by in the Himalayas by 2080?

35%