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Flashcards in Brahmaputra Deck (26)
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1
Q

What is being generated to reduce flood risk in Bangladesh

A

Flood hazards maps, to show main threat areas

2
Q

What is common with Bangladesh river systems?

A

Very small and intricate streams

3
Q

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

A

India, Nepal, Bhutan and China

4
Q

What does annual rainfall vary between in Bangladesh?

A

1250mm - 5700mm

5
Q

What % of Bangladesh is Floodplains?

A

80%

6
Q

What do floods damages in Bangladesh?

A

Agricultural production, Infrastructure damage, People displacement

7
Q

What are the main causes of Bangladesh floods

A

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

8
Q

Why are many houses still built on the flood plain?

A

No knowledge of floodplain footprint, huge demand

9
Q

What main rivers surround the southwest region of Bangladesh?

A

Haribhanga, Meghna, Ganges

10
Q

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

A

10 large and 18 small

11
Q

How many junctions and branches does the Southwest region have?

A

36, junctions and 58 branches

12
Q

What is the Flood hazard calculated from?

A

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

13
Q

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

A

1398, PPKM and 84 PPKM

14
Q

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

A

Expected level of damage + loss of human lives

15
Q

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

A

The repetition or scale of the event

16
Q

How many people died in the Brahmaputra flood in 1970?

A

225,000

17
Q

What will climate change lead to? (Immerzeel 2008)

A

Intensification of the global hydrological cycle

18
Q

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

A

Himalayas, increased ice melt

19
Q

Which glacier does the Brahmaputra come from?

A

Kailash

20
Q

Why will an increase in water impact the Brahmaputra?

A

It will harm farming processes

21
Q

What would increase in ice melt lead to?

A

Increase in summer flows

22
Q

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

A

0.6 c

23
Q

How much is the Tibetan Platau warming by?

A

1.1 c a year

24
Q

What is the expected precipitation increase expected to be by 2100

A

22%

25
Q

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

A

3-3.5 degrees

26
Q

What could precipitation increase by in the Himalayas by 2080?

A

35%