[graffis-l] WAVES THREATEN ZANZIBAR PARADISE

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Waves threaten Zanzibar paradise

 

 

Posted by: " Mark Graffis "

mgraffis

mgraffis

 

 

Thu Dec 13, 2007 2:26 pm (PST)

http://news.bbc.co.uk/2/hi/africa/7100107.stm

Waves threaten Zanzibar paradise

By Frederica Boswell BBC News, Zanzibar

Matemwe's shoreline has receded three meters in 15 years

People living close to beaches on the Tanzanian archipelago of

Zanzibar fear they will lose their homes to the encroaching waves.

" The tides in October were the worst. All the tables and

umbrellas were washed away, " says Abdullah, a regular at the Mnazini

guest house on Matemwe beach.

With each spring and autumn equinox, the new and full moon tides have

been getting higher and more damaging to Zanzibar's north-east coast.

 

" Last month, the waves were almost four metres high as they hit

the shore, " said Kahindi Kadogoh, a local building contractor who

has been based on Matemwe beach for over 15 years.

Using three large steps, he marks out how much the shoreline has

receded in this time.

" When I came, the shoreline was here, and now it has gone back

nearly three metres. "

Building defences

Recently, the head of the United Nations Environment Programme warned

that Africa's coastline faces increasing danger of erosion from rising

sea levels caused by climate change.

Those who can afford to build the defences have started doing so

 

" By some projections of the IPCC [intergovernmental Panel on

Climate Change], global warming could affect one-third of Africa's

coastal infrastructure by the end of this century, " said Achim

Steiner.

" We know that we are on a course of having sea levels rising

between 20 and 60cm this century. "

Zanzibar's Chief Environmental Officer Asha Khatib is very aware that

sea erosion is a cause for concern on the island.

" People come to the department with their government

representative and say that they are worried. We need money but we must

find ways to protect the shoreline as best as we can. "

For the moment, all they can do is warn people not to cut down trees,

build too close to the beach, or remove sand.

Officials say they are studying the problem and promise that a plan

will be put in place when the study is completed in 2009.

In the meantime, those who can afford it have started building up

defences, using concrete, coral or coconut poles.

Mr Kadogoh points these out as he walks down the beach, past hotels

and private houses.

Stopping at a concrete slope, he explains that the idea is for the

waves to break against it, and then roll over, as it provides a barrier

for any sand being washed away.

Evident cracks

In theory, it should work, but as the tides get higher, the waves

roll over it completely.

A high concrete wall looming over six-foot tall seems a solid defence

against the power of the sea, however its cracks are evident.

If the sea comes, move up further up from the beach. No problem

 

Haji Mkali Pili, Teacher " Zanzibar's biggest wave in over 55 years hit this wall in

October and caused big damage, " he says.

" It cannot resist the big waves because the cracks make it

weak. "

Further along Matemwe beach, the cement wall merges with one made out

of coral.

The jagged rocks jutting out of the sand in front of it suggest that

this is not the owner's first attempt.

" This is the third wall he has built, and it will last six

months. The tides are now so strong that it becomes temporary, " says

Mr Kadogoh.

Further along, a property's boundary is marked out along the

shoreline by the trunks of coconut trees driven deep into the sand.

Planks of wood have been nailed across them, joining them together.

 

This is the most successful defence, according to Mr Kadogoh.

As the waves crash against the poles, the planks weaken their force

and do not allow them to dredge the sand back to sea.

The problem with building defences is that they must run along an

entire beach to be effective.

And to protect a boundary of 20 metres using coconut poles, costs

between $500 and $600.

The sea's mercy

Most beach-front plots are now owned by foreigners, so residents of

Matemwe village depend on them for their protection.

Haji Mkali Pili, a teacher at Matemwe School, says the village itself

only opens up onto small areas of the shoreline.

And he says even these parts are too expensive for villagers to

defend.

Another villager, Haji Khamisi Musa, believes mangroves are the

answer.

" The roots of the mangrove trees extend like fingers, and grab

hold of the land so it is not swept away. Where mangroves exist, the land

holds, " he says.

For Mr Pili, who feels such local defence attempts are futile, there

is only one solution when your home is at the mercy from the sea.

" If the sea comes, move up further up from the beach. No

problem, " he says.

For the moment, he sees no urgency, but realises that Matemwe

villagers should probably start moving further inland quickly before the

land is snapped up by wealthy Zanzibaris in search of a second home.

 

With a new tarmac road being built in the area and electricity

becoming available, he says: " Clever people from town are already

spending millions of Tanzanian shillings to buy and build there " . mAt 09:02 AM 12/14/07, you wrote:

Waves threaten Zanzibar paradise

 

Posted by: " Mark Graffis " mgraffis

mgraffis

Thu Dec 13, 2007 2:26 pm (PST)

http://news.bbc.co.uk/2/hi/africa/7100107.stm

Waves threaten Zanzibar paradise

By Frederica Boswell

BBC News, Zanzibar

Matemwe's shoreline has receded three meters in 15 years

People living close to beaches on the Tanzanian archipelago of Zanzibar

fear they will lose their homes to the encroaching waves.

" The tides in October were the worst. All the tables and umbrellas

were washed away, " says Abdullah, a regular at the Mnazini guest

house on Matemwe beach.

With each spring and autumn equinox, the new and full moon tides have

been getting higher and more damaging to Zanzibar's north-east coast.

 

" Last month, the waves were almost four metres high as they hit the

shore, " said Kahindi Kadogoh, a local building contractor who has

been based on Matemwe beach for over 15 years.

Using three large steps, he marks out how much the shoreline has receded

in this time.

" When I came, the shoreline was here, and now it has gone back

nearly three metres. "

Building defences

Recently, the head of the United Nations Environment Programme warned

that Africa's coastline faces increasing danger of erosion from rising

sea levels caused by climate change.

Those who can afford to build the defences have started doing so

 

" By some projections of the IPCC [intergovernmental Panel on Climate

Change], global warming could affect one-third of Africa's coastal

infrastructure by the end of this century, " said Achim Steiner.

 

" We know that we are on a course of having sea levels rising between

20 and 60cm this century. "

Zanzibar's Chief Environmental Officer Asha Khatib is very aware that sea

erosion is a cause for concern on the island.

" People come to the department with their government representative

and say that they are worried. We need money but we must find ways to

protect the shoreline as best as we can. "

For the moment, all they can do is warn people not to cut down trees,

build too close to the beach, or remove sand.

Officials say they are studying the problem and promise that a plan will

be put in place when the study is completed in 2009.

In the meantime, those who can afford it have started building up

defences, using concrete, coral or coconut poles.

Mr Kadogoh points these out as he walks down the beach, past hotels and

private houses.

Stopping at a concrete slope, he explains that the idea is for the waves

to break against it, and then roll over, as it provides a barrier for any

sand being washed away.

Evident cracks

In theory, it should work, but as the tides get higher, the waves roll

over it completely.

A high concrete wall looming over six-foot tall seems a solid defence

against the power of the sea, however its cracks are evident.

If the sea comes, move up further up from the beach. No problem

Haji Mkali Pili, Teacher

" Zanzibar's biggest wave in over 55 years hit this wall in October

and caused big damage, " he says.

" It cannot resist the big waves because the cracks make it

weak. "

Further along Matemwe beach, the cement wall merges with one made out of

coral.

The jagged rocks jutting out of the sand in front of it suggest that this

is not the owner's first attempt.

" This is the third wall he has built, and it will last six months.

The tides are now so strong that it becomes temporary, " says Mr

Kadogoh.

Further along, a property's boundary is marked out along the shoreline by

the trunks of coconut trees driven deep into the sand.

Planks of wood have been nailed across them, joining them together.

 

This is the most successful defence, according to Mr Kadogoh.

As the waves crash against the poles, the planks weaken their force and

do not allow them to dredge the sand back to sea.

The problem with building defences is that they must run along an entire

beach to be effective.

And to protect a boundary of 20 metres using coconut poles, costs between

$500 and $600.

The sea's mercy

Most beach-front plots are now owned by foreigners, so residents of

Matemwe village depend on them for their protection.

Haji Mkali Pili, a teacher at Matemwe School, says the village itself

only opens up onto small areas of the shoreline.

And he says even these parts are too expensive for villagers to defend.

 

Another villager, Haji Khamisi Musa, believes mangroves are the answer.

 

" The roots of the mangrove trees extend like fingers, and grab hold

of the land so it is not swept away. Where mangroves exist, the land

holds, " he says.

For Mr Pili, who feels such local defence attempts are futile, there is

only one solution when your home is at the mercy from the sea.

" If the sea comes, move up further up from the beach. No

problem, " he says.

For the moment, he sees no urgency, but realises that Matemwe villagers

should probably start moving further inland quickly before the land is

snapped up by wealthy Zanzibaris in search of a second home.

With a new tarmac road being built in the area and electricity becoming

available, he says: " Clever people from town are already spending

millions of Tanzanian shillings to buy and build there " .

 

 

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