Showing posts with label Sea Level. Show all posts
Showing posts with label Sea Level. Show all posts

Friday, April 23, 2010

Jakarta sinking as fast as 10cm per year

Irawaty Wardany, The Jakarta Post, Jakarta | Fri, 04/23/2010 10:46 PM | Jakarta

Jakarta, the nation’s capital and largest city, is sinking at a rate of 10 centimeters a year, a recent study has found.

The main causes for this phenomenon, which has been evidenced in recent years by several major floods, are extensive land extraction due to groundwater exploration and pressure from high-rise buildings, which is pushing parts of the city into the underlying water table.

“The land has been sinking for a long time, and the coastline is now encroaching on the heart of the city,” a geodynamics researcher from the Bandung Institute of Technology Irwan Gumilar told The Jakarta Post.

Irwan was a member of a research team led by Professor Hasanuddin Z Abidin that monitored Jakarta from 1997-2009.

“Few people may realize that the land is sinking by 10 centimeters to 12 centimeters a year,” Irwan said.

The highest rate of subsidence was recorded in coastal areas in North Jakarta, including Muara Kapuk and Ancol, where extensive development had increased pressure on the relatively young and porous soil beneath.


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Jakarta Predicted to be Underwater By 2012


Wednesday, December 9, 2009

Jakarta Plans to Construct Sea Wall Along North Coast

The Jakarta Globe, Ulma Haryanto

Raising the dead. Workers digging up graves at the Malaka Public Cemetery in East Jakarta on Tuesday. About 100 bodies had to be relocated in order to make way for the capital’s East Flood Canal project. (Photo: Yudhi Sukma Wijaya, JG)

Jakarta Governor Fauzi Bowo has announced that he would construct huge sea walls to protect the North Jakarta coastline from the possible consequences of global warming and other causes of tidal flooding.

“Flooding is not caused by trapped rainwater alone. It can also come from the sea, such as the tidal flooding in Muara Baru,” Fauzi said on Monday.

“Areas such as Muara Baru are the worst affected,” he added. “The sea wall will protect the lowlands of North Jakarta from the threats posed by tidal flooding.”

Fauzi also mentioned the possibility of using reverse osmosis to turn seawater into clean, drinkable water.

“B y using reverse osmosis, as already practiced by countries in the Middle East, seawater can be turned into drinking water. This is going to be a decades-long, not just a multi-year, project,” he said.

As previously reported by the Jakarta Globe, Armi Susandi, a climatologist from the Bandung Institute of Technology (ITB), has predicted that Jakarta would sink at an average rate of 1.37 centimeters a year in the coming years.

Armi agreed that a sea wall should be built along the coastline of North Jakarta by 2015 to protect it from the rising waters.

“These walls should be at least 2 to 3 meters above sea level and 6 meters thick,” he said.

Rudi P Tambunan, head of urban development studies at the University of Indonesia, applauded Fauzi’s initiative. He said that last month he was invited to a meeting of the National Development Planning Board (Bappenas) to discuss the prospect of protecting the coastline of North Jakarta from flooding.

“Considering the depth of the sea, those walls should be at places where the depth is 8 to 20 meters,” he said.

Rudi said the project was being explored in tandem with Fauzi’s initiative to reclaim certain areas of the coastline to create small islands and to revitalize existing beaches. He added that the city administration’s plan was to construct several two-square-kilometer islands 200 meters to 250 meters off the coastline.

Tarjuki, head of the water resources division at the Public Works Agency, confirmed to the Jakarta Globe that the sea wall had been included in the Jakarta Spatial Plan for 2010-2030.

However, he said, the project would not start immediately as the city administration would need to assess the details, which would take at least two years.

“The dikes currently built along the coast are temporary, and not for the long term,” he explained.

To mitigate flooding and offer residents protection from tidal surges, the Jakarta city administration has built dikes in some areas of North Jakarta, including Kali Baru, Pluit and Muara Baru. However, some sections of these dikes have reportedly already collapsed, with the worst failures in the Muara Baru area.

Tuesday, December 8, 2009

Jakarta to build seawall to anticipate rising sea level

Antara News, Tuesday, December 8, 2009 03:52 WIB

Jakarta (ANTARA News) - Jakarta plans to build a seawall to overcome increasing sea levels, Governor Fauzi Bowo said at a meeting with newsmen at Hotel Golden Boutique on Monday.

"The seawall is badly needed especially because 40 percent of the Jakarta area is currently under the sea level," he said.

The seawall is not like the current embankment for blocking tidal waves but it will be like a huge wall stretching along the Jakarta coast.

He likened the wall to the one being prepared stretching from St Petersburg in Rusia and New Orleans in the US which had a topography like that of Jakarta.

"The two cities are also port cities like Jakarta so that the wall may not disturb ships coming in and out the cities," he said.

Regarding the urgency of the development of the wall the governor said that it was because globally the sea level was increasing 0.8 centimeters a year while the construction would take years.

"This is not only a multi-year project but perhaps even a decades-long project," he said.

The people living in North Jakarta right now have not yet fully been freed from the impact of tidal waves because the damaged parts of the embankment had not been fully repaired.

The head of the city`s public works service, Budi Widiantoro, admitted it saying it was because the construction of the Pelindo embankment had not yet finished.

"It is still leaking. Attempts have been made to stop using river stones but it could not as yet overcome the problem," he said.

Friday, December 4, 2009

Seawater floods worsen in North Jakarta coastal residential areas

The Jakarta Post, Jakarta | Fri, 12/04/2009 3:54 PM

Seawater flooding, caused by high tides, known locally as “rob”, has been worsening in a number of residential areas in North Jakarta over the past few days as the city enters the wet season.

In Muara Baru, flooding is 30 centimeters deep, while main road Jl. RE Martadinata endures flooding up to 50 centimeters deep.

Sarman, a local resident in Muara Baru, told tempointeraktif.com on Friday that “rob”, which occurs monthly, also affected houses.

The local administration has been constructing a dike to prevent flooding in Muara Baru. Of the total 3.5 kilometer-long dike, only 800 meters has been finished.

The city administration has also planned to deploy a water pump to prevent water from the Ancol River from overflowing into Jl. RE Martadinata next year.

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Thursday, November 19, 2009

Jakarta Heading for Watery Grave, Experts Warn

The Jakarta Globe, Ulma Haryanto

Floods are an annual event in many parts of Jakarta. (JG Photo/ Afriadi Hikmal)

At least a quarter of Jakarta would be underwater by 2050 if current rates of development projects and groundwater harvesting continued unabated, a climate expert warned on Wednesday.

Armi Susandi, a climatologist from the Bandung Institute of Technology (ITB), said the northern part of Jakarta would most likely be permanently submerged by 2015.

“I am talking about Cilincing, Muara Baru and Tanjung Priok”, he told the Jakarta Globe on Wednesday.

“Meanwhile the Soekarno-Hatta International Airport [located in Tangerang, Banten] will be underwater by 2030.”

In a 2009 ITB study on land subsidence and urban development in Jakarta, Indonesian and Japanese researchers showed that an increase in population and urban development activities in the capital was driving the subsidence because of the sharp increase in built-up areas and decrease in natural green spaces.

The problem has been exacerbated by factories, hotels and wealthy residents drilling their own deep-water bores to bypass the city’s water grid, sucking out the groundwater and causing further subsidence. Jakarta’s limited pipe network for clean water means that about 40 percent of residents have to pump their own groundwater.

The soft ground that makes up most parts of Jakarta, the weight of ever-expanding road infrastructure and buildings and the excessive exploitation of groundwater all play a part in the city’s subsidence.

In 2005, Armi, together with ITB oceanographer Safwan Hadi, created a simulation that suggested that by 2050 a quarter of Jakarta would be submerged by the sea.

“Sudirman and Kuningan areas will still be there by 2030,” he said, in an apparent reference to media reports on Wednesday that half of the city, including Sudirman in Central Jakarta and Kuningan in South Jakarta, would be inundated by seawater by 2030.

Armi explained that his simulation had used a spatial and periodical projection of the depreciation of the ground level in Jakarta versus the rising sea level. The simulation utilized what he called a “digital evaluation model,” which he applied to the Greater Jakarta area to project the impact if nothing was done between 2005 to 2050, using 5-year intervals.

According to his simulation, Merdeka Square and its surrounding areas in Central Jakarta would be under water by 2080. “So Sudirman and Kuningan should also be underwater in about that year,” Armi said.

The parameters used for his simulation were an average rise in sea levels of 0.57 centimeters per year, and a ground level subsidence rate of 0.8 centimeters per year. “So the average sinking rate will be 1.37 centimeters a year,” he continued.

However, the World Bank in 2008 said that Jakarta was sinking by as much as 4 to 10 centimeters annually.

Armi argued that the projection he made was according to actual sea and coastline conditions, and with the use of global positioning to measure the rate of sinking in Jakarta.

Despite his less-catastrophic prediction, Armi still called on the government to solve the problem. “Jakarta has to adapt permanently by building sea walls along the coastlines of North Jakarta. The walls should be built by 2015,” he said.

The wave breakers currently being built in North Jakarta, he said, would only help to prevent tidal surges during extreme weather conditions.

“What we need are sea walls,” he said, adding that the walls should be at least two to three meters above sea level and six meters thick to be able to protect the city from the ocean, which he predicted could rise by one meter by 2100. Ulma Haryanto

Saturday, November 7, 2009

Child's play

The Jakarta Post | Sat, 11/07/2009 12:58 PM


Children play in a street flooded in seawater in Muara Baru, North Jakarta, on Friday. The Jakarta administration plans to allocate Rp 4.5 billion (US$ 460,000) to build an embankment on the nearby coast. (JP/Nurhayati)

Related Article:

Flood inundates school in Pontianak


City to build dikes

BERITAJAKARTA.COM — 11/5/2009 7:37:42 PM



To prevent the tidal wave in Marunda, North Jakarta, the Jakarta City Administration has planned to develop a permanent dike along northern beach. The development fund has been allocated in the arrangement of 2010 city budget as much as Rp 4.5 billion.

Jakarta Governor Fauzi Bowo hoped the development can be realized soon. The dike is important and useful to prevent the tidal wave attacking residential areas in northern beach such as in Community unit number 07 Cilincing, North Jakarta.

Tidal wave has attacked the area Thursday (11/5) at 12 pm. It is because the dike development in Kalibaru coast to east side of Marunda beach has not been done yet. The tidal wave had destroyed tens ha of shrimp embankment. “The dike is developed to anticipate the rainy season and climate change,” Jakarta Governor Fauzi Bowo said.

Jakarta Head of Dept. of Public Works Budi Widiantoro added, the dike to prevent tidal wave will be developed in Pasar Ikan, Marunda, and Thousand Island. “The dike should be developed next year if the council approve the proposal,” Widiantoro added.

Fakhrurrozi for Jakarta Water Source Control Division explained the dike length is about 3.143 km. “The dike is not only built by city administration, but also by private,” he explained.

City administration will manage the dikes in Kamalmuara, Muarakarang, Pluit, Luarbatang, Cilincing and Marunda, while the private will manage the dikes in Pantai Indah Kaouk, Ancol, Pelabihan Indonesia, Bogasari factory, and Sunda Kelapa Harbor.

A giant dam will also be planned for a long term project. It will be developed around northern beach in North Jakarta with the height is almost the same height as Istiqlal Mosque.

Translator: rizky

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North Jakarta Allocates Rp25 Billion for Coastal Areas

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Monday, November 2, 2009

Paradise lost?

COP15 Copenhagen, Michael von Bülow, 20/03/2009 12:40


Most people know the Maldives as a tropical paradise for holiday makers. But behind the white beaches and glittering waves is a poor population which has lived in close symbiosis with the sea for hundreds of years - but now has to look elsewhere for a place to live, as the ocean is steadily eating away at their islands.

When the tsunami hit the archipelago of the Maldives in 2004, it was more in the way of a flooding than a regular tidal wave due to the sharp profile of the atolls. Only 87 people perished, but the damages were catastrophic for the tiny island state.

Two thirds of the country disappeared momentarily into the Indian Ocean, and when the sea withdrew, it took 62 percent of the country’s GNP with it. Electricity, communications and freshwater supplies on many islands were destroyed by the saltwater, and not until two years later was the country brought back on foot with the aid of the UN and international aid organisations.

Perhaps it was only a taste of what the 300,000 citizens of the Maldives can expect if and when global warming kicks in and makes the world’s seas rise by as much as one meter within the next century, like the latest scientific studies forecast.

80 percent of the island state’s only 235 km2 are less than one meter above sea level, so disaster is looming. Erosion is constantly eating away at the vulnerable atolls, and climate change is already palpable in the shape of more rain and more disease-carrying mosquitoes.

To most foreigners the Maldives are just a paradise for holiday makers. White beaches as if taken straight from a postcard and a temperature that due to cooling breezes from the sea never becomes unbearably high, making the country a rare pearl made for sailing, surfing, diving or just lazing on the beach. Under the sea, hobby divers encounter a world of adventures with corals and a thousand different tropical fish species.

Almost 700.000 tourists from mainly Europe, Japan, China and Australia visit the Maldives each year. Upon landing in one of the two international airports, one immediately notices the proximity of the sea. It feels literally like landing on the water because the islands are so tiny – a jogger can easily cover the perimeter of the main island Male’ in less than half an hour. The runways are regularly wet with splashes of sea water, in spite of the fact that the airport island Hulhumale has been raised artificially to the breath-taking elevation of two meters above sea level.

With a share of 35-40 percent of the GNP, tourism is a vital source of income for the Maldives. The second largest source of income is tuna fishing, which is done with hook and line in the traditional, environmentally friendly way, but which is declining rapidly due to dwindling fish stock. Apart from that, there is some farming, consisting mostly of coconuts and papaya.

Historically, the Maldives have for hundreds of years been a crossroads for different trade routes, and this is reflected in the population which ethnically and culturally is a unique amalgamation of Indians, Africans and Arabs. In addition to that, the island state has its own written language.

But the citizens in the 100 percent Muslim country are poor, and with a national economy the size of a small European city the Maldives are totally dependant upon foreign aid and loans if the tropical paradise is to be saved from slipping away into the expansive ocean.

Who will provide the necessary hundreds of millions of dollars, and is it worth the trouble in the first place? Couldn’t the tourists just go somewhere else for their holidays and the Maldivian population move some place where the risk of getting their feet wet is less imminent?

“It is a tiny nation, and by then (2100, ed. note) the population will perhaps be half a million people who could theoretically be displaced. But can we accept the disappearance of a country and an absolutely unique culture? That is the question we need to ask ourselves,” says Jonas Kjær.

Following the tsunami, from spring 2005 till late 2007 the Dane was stationed in the Maldives by the UNDP as aid coordination advisor, aiding the Maldivian government with the economic rehabilitation. There is no doubt in his mind as to the answer.

“No, we can not accept that a country just disappears,” he says.

According to Jonas Kjær, the recipe for saving the Maldives is “population and development consolidation”. The first step would be to gather the population of the Maldives, which at the moment is scattered over 200 islands, on just 10 to 15 islands. This would at the same time make an additional number of islands available to tourists, thereby making them co-finance the relocation and rehabilitation of the local population.

The next step would be to elevate the islands artificially by two to three meters, and to build solid walls along the coast safeguarding the islands against the tide and storms.

“Of course, there are some social, cultural and historical considerations to be made. You don’t just move a population that has inhabited the islands for maybe 2,000 years. That takes political guts,” says Jonas Kjær.

In fact, population and development consolidation, nicknamed “pop concert”, has been sitting in a drawer with the previous government for at least 10 years. Due to political reluctance and fear of the population’s reaction the programme hasn’t been initiated. There seems, however, to be a growing understanding amongst the population for a need to do something – an understanding that has been augmented substantially by the impact of the tsunami.

The younger and more informed citizens have especially acknowledged the need to move, and some are already on their way. More and more young Maldivians go to Australia, New Zealand, Indonesia, Singapore, the US or the UK to study, and after finishing their studies some of them decide to stay in their new country, adding to the brain drain of their native country.

This leaves a Maldivian population, which after 30 years of semi-dictatorial rule has embarked on a positive democratic development, to hope that paradise has not already been lost.

Saturday, October 31, 2009

Climate change to affect marine tourism

Antara News, Wednesday, October 28, 2009 05:20 WIB

Foreign tourists at Kuta Beach in Bali. (ANTARA)

Denpasar (ANTARA News) - Sea and Coastal Areas Director of the Maritime Affairs and Fisheries Ministry Subandono Diposaptono said that climate change could affect the marine tourism, particularly natural tourism in coastal areas.

"When the climate changes as a result of global warming the sea surface would rise so that white sand will disappear because it is submerged with water," Diposaptono told a seminar on climate change here on Tuesday.

He said that the increase in global warming would also bring impact to tourism as it would cause inconvenience in the natural tourism areas.

For marine tourism, the impact of global warming would be the whitening of coral reef and if this happened the condition under the sea would no longer be attractive to tourists.

Besides, this condition will also cause extreme waves that would change the environment into a situation which is not safe or dangerous to the visitors of a beach.

He said that at present the sea water was experiencing an average surface increase by five to 10 millimeters per annum. Although it was small, yet it would impact the convenience of human life if it continued to take place for a long time.

"Besides due to climate change, the water surface increase also happened due to excessive exploitation of ground water that causes the land surface to subside.

Generally, big cities in Indonesia are near to the sea so that we think that the sea surface has risen while in fact it is the land surface which is subsiding," he said.

Related Articles:

Jakarta Predicted to be Underwater By 2012


Tuesday, October 27, 2009

Australia coastal living at risk

About 80% of Australians live in coastal areas

Australia may have to force people to evacuate coastal areas as rising sea levels threaten thousands of homes, an official report has warned.

The National Sea Change Taskforce said urgent action was needed to protect Australia's coast from seas expected to rise more than 80cm (31 inches).

It said the government should introduce laws to ban further coastal living and development.

The parliamentary report noted that 80% of Australians live in coastal areas.

Coastal identity

The report urges authorities to consider "the possibility of a government instrument that prohibits continued occupation of the land or future building development on the property due to sea hazard".

There were almost 50 recommendations in the report, ranging from a national coastline plan and greater co-operation between different authorities to a revised building code to cope with storm surges and soil erosion.

It does not say the government should force people to move inland but proposes an independent group look into whether the government could - and should - do that.

Australia's major cities are all in coastal areas, as well as the homes of some six million people outside the main population centres, according to the report, which was issued late on Monday after 18 months of study.

"The committee agrees that this is an issue of national importance and that the time to act is now," the House of Representatives Standing Committee on Climate Change, Water, Environment and the Arts wrote.

Alan Stokes, the task force's executive director, said banning development in certain areas is necessary if the government wants to prevent a major loss of life in the event of natural disasters such as tsunamis.

"There's no doubt Australia will remain and continue to be a coastal community," he said.

"But we may have to be a bit more considerate about which parts of the coast we develop further and which ones we don't," he added.

Last week the government reintroduced carbon trading legislation which was rejected in August and is among a package of bills aimed at cutting greenhouse gas emissions by up to 25% by 2020.

Saturday, October 17, 2009

Maldives cabinet makes a splash

BBC News, 05:48 GMT, Saturday, 17 October 2009 06:48

The government of the Maldives has held a cabinet meeting about five metres (16ft) underwater to highlight the threat of global warming.

The cabinet were joined by instructors and military escorts

President Mohamed Nasheed and his cabinet signed a document calling for global cuts in carbon emissions.

Ministers spent half an hour on the sea bed and communicated with white boards and hand signals.

Officials from the low-lying island nation say the dive is "a bit of fun", intended to send a serious message.

The Maldives stand an average of 2.1 metres (7ft) above sea level, and the government says they face being wiped out if oceans rise.

Military minders

Three of the 14 cabinet ministers missed the underwater meeting because two were not given medical permission and another was abroad, officials said.

President Nasheed and other cabinet members taking part had been practising their slow breathing to get into the right mental frame for the meeting, a government source said.

On Friday, ministers carried out practice dives off the island of Girifushi, about 20 minutes by boat from the capital, Male.

About 5m underwater, in a blue-green lagoon on a small island used for military training, they were observed by a clutch of snorkelling journalists.

Each minister was accompanied by a diving instructor and a military minder.

While underwater, they signed a document ahead of the UN Climate Change Conference in Copenhagen in December, calling on all nations to cut their carbon emissions.

World leaders at the summit aim to create a new agreement to replace the 1997 Kyoto Protocol, which expires in 2012.

Related Article:

Maldives government holds underwater cabinet meeting


Tuesday, September 22, 2009

Dutch help Bay Area plan for sea level rise

By Julia Scott, San Mateo County Times, 09/21/2009 05:20:10 PM PDT

A conceptual example of "tidal embracing development" in Foster City that accommodates sea level rise with a series of wetlands, a short levee with a public park behind it, and a thicker levee protecting apartment buildings. (Conceptual drawing courtesy Arcadis)


A conceptual example of "tidal embracing development" on the San Francisco waterfront 50 years from now. The first level of the building has some limited uses but allows water to flow through. The second floor is more protected, and the building has a "green" roof to absorb stormwater. (Conceptual drawing courtesy Arcadis)

SAN FRANCISCO — How to plan for sea level rise, a still-abstract concept for many Californians, drew serious consideration from engineers, designers and urban planners from the Netherlands and the United States at a symposium Monday.

A group of government-sponsored Dutch experts presented a report with strategies to deal with sea level rise in San Francisco Bay and the Sacramento-San Joaquin Delta based on a year's worth of research in partnership with the Francisco Bay Conservation and Development Commission.

With 50 percent of the Netherlands below sea level, the Dutch have been perfecting flood protection for the past 600 years.

The inevitable effects of climate change in California, and how cities can adapt to them, are starting to get more attention from Bay Area planners. While no one knows exactly how sea level rise will play out 100 or 200 years from now, analysts agree that more severe and frequent floods are going to be a part of it.

Avoiding sea level rise is by now impossible. The Bay has risen 8 inches since the start of the 20th century, and scientists worldwide agree that the Bay Area in particular can expect to experience sea level rise of as much as 16 inches by midcentury and as much as 55 inches by 2100.

Extreme storms will increase annual risk of flooding from 1 percent to 100 percent if no actions are taken to protect the Bay Area shoreline, potentially endangering 270,000 residents, according to the Pacific Institute. Development along the shoreline is currently valued at $62 billion.

How to plan for a future in which some of that real estate is threatened by storm surges — for a time beyond what today's urban planners will live to see — is the crucial question, said Will Travis, executive director of the Bay Conservation and Development Commission.

"We're in the same position as the captain of the Titanic. By the time he looked up, it was too late — he was going to hit (the iceberg)," he said. "We need to stop trying to protect the Bay Area the way it is.

Instead, we need to design it for the way it will be in the future."

That future may involve dismantling development in some places and letting the tide take its course, according to the report. Regional leaders may decide that some areas, such as the Port of Oakland and both regional airports, are too valuable to lose and must be protected at all costs. Other areas could be transformed to incorporate rising tides into the heart of a city.

The key is to begin asking those questions now, especially as several major developments at the edge of the Bay await approval, including Treasure Island and a Cargill saltworks site in Redwood City. Those areas were singled out in the report as "hot spots" for the Bay, meaning they represent the types of development most at risk from sea level rise.

"Just as in an emergency room, making these policy decisions will be difficult," Travis said. "It may be better to abandon some places than to allow the houses to be built and then try to protect them from flooding."

Frustratingly little is known about how well protected the Bay Area is from a serious flood even now, according to the report. (Cities on the Bay are expected to prepare for a once-in-a-century flood, but the shores of the Netherlands are armored with flood gates and other equipment strong enough to withstand a once-in-10,000-year onslaught from the North Sea.)

While many of the Bay Area's most vulnerable and valuable areas are protected by federally certified levees, they were all built before planners became aware of how sea level rise would change the whole equation.

Simply building higher levees is not a silver bullet, however. The Dutch came to that conclusion in 1995 after major flooding through the country's interior estuaries made them rethink the policy of walling off every section of river. They invented a new concept, called "living with water," designed to embrace sea level rise. They raised houses and let water flow underneath them. The government bought farmland along waterways and turned it into tidal wetlands, which naturally absorb water.

"People realize we can't just raise levees forever. If something goes wrong, you have an entire city that will be flooded in an instant. Water is a fact — we need to do something about it," said David Van Raalten, project manager for the pilot project between the Netherlands and California and a principal in ARCADIS, an international engineering and consultancy firm.

Rather than propose a series of tailor-made design solutions for each Bay Area "hot spot" based on a Dutch blueprint, the report offers a new way of thinking about what types of development ought to exist in which area. Zones with high economic value might continue to fill the Bay and expand with the help of levees and sea walls. Another option, labeled "tidal embracing development," could involve urban tidal canals carved into the suburbs or parking lots that retain storm water underground.

The Dutch government has formed similar partnerships in most of the world's most vulnerable water regions, including Louisiana, Indonesia, the Yangzee Delta in China and the Mekong Delta in Vietnam, with the goal of sharing expertise and learning from each other.

The Dutch government spent 120,000 euros, or $176,000, on the Bay Area pilot project and is proposing to invest another 100,000 euros for further research in California, provided the state can match the money.

Sunday, April 5, 2009

An Antarctic ice shelf has disappeared: scientists

Reuters, Sat Apr 4, 2009 7:06pm EDT


A view of the leading edge of the remaining part of the Larsen B ice shelf that extends into the northwest part of the Weddell Sea is seen in this handout photo taken on March 4, 2008.(REUTERS/Mariano Caravaca/Handout)

WASHINGTON (Reuters) - One Antarctic ice shelf has quickly vanished, another is disappearing and glaciers are melting faster than anyone thought due to climate change, U.S. and British government researchers reported on Friday.

They said the Wordie Ice Shelf, which had been disintegrating since the 1960s, is gone and the northern part of the Larsen Ice Shelf no longer exists. More than 3,200 square miles (8,300 square km) have broken off from the Larsen shelf since 1986.

Climate change is to blame, according to the report from the U.S. Geological Survey and the British Antarctic Survey, available at pubs.usgs.gov/imap/2600/B.

"The rapid retreat of glaciers there demonstrates once again the profound effects our planet is already experiencing -- more rapidly than previously known -- as a consequence of climate change," U.S. Interior Secretary Ken Salazar said in a statement.

"This continued and often significant glacier retreat is a wakeup call that change is happening ... and we need to be prepared," USGS glaciologist Jane Ferrigno, who led the Antarctica study, said in a statement.

"Antarctica is of special interest because it holds an estimated 91 percent of the Earth's glacier volume, and change anywhere in the ice sheet poses significant hazards to society," she said.

In another report published in the journal Geophysical Letters, the National Oceanic and Atmospheric Administration reports that ice is melting much more rapidly than expected in the Arctic as well, based on new computer analyses and recent ice measurements.

The U.N. Climate Panel projects that world atmospheric temperature will rise by between 1.8 and 4.0 degrees Celsius because of emissions of greenhouse gases that could bring floods, droughts, heat waves and more powerful storms.

As glaciers and ice sheets melt, they can raise overall ocean levels and swamp low-lying areas.

(Reporting by Maggie Fox; Editing by Xavier Briand)

Related Articles:

Ice Bridge Holding Antarctic Shelf in Place Shatters

Study: Arctic sea ice melting faster than expected

Jakarta Predicted to be Underwater By 2012


Saturday, March 28, 2009

Fauzi Calls Inspections for All 26 Dams in The Capital

The Jakarta Globe, Arientha Primanita, March 28, 2009

Situ Gintung dam burst its banks near Jakarta, sending waves of muddy water laden with debris crashing into a suburb of the Indonesian capital. (BBC)

The governor of Jakarta said on Friday that following the Situ Gintung disaster he had ordered an inspection of all dams in Jakarta.

“I have ordered the Public Works Agency to check and recheck the dams and all flood mitigation facilities and infrastructure in Jakarta,” Fauzi Bowo said.

“The incident in Situ Gintung was probably due to a lack of routine inspections,” he said.

Fauzi said that he sent his condolences to families of victims and that he regretted the disaster in the Cirendeu area of Tangerang, west of Jakarta.

He said the capital had set up shelters at Muhammadiyah University Jakarta and Ahmad Dahlan University in Ciputat, Banten Province, to accommodate people whose houses had been swept away or flooded by the burst dam.

Public health worker Effendy Anas said that in addition to providing medical aid the city sent six ambulances to help evacuate victims to Fatmawati Hospital in South Jakarta.

Budi Widiantoro, head of Jakarta’s Public Works Agency, said he had received the new instructions to check embankments in Jakarta and would take preventive steps if any weaknesses in structural integrity were found.

Budi said that while the Situ Gintung dam is in Banten Province, on the outskirts of Jakarta, it holds special significance for Indonesia’s largest city.

“It has the potential to hold back water to keep Jakarta from flooding,” he said, “but it can cause floods in Jakarta if it is overrun, as is happening now.”

He said the dam is directly linked to the Pesanggrahan River that runs through the Cirendeu area on its way to Jakarta areas like Tanah Kusir, Ulujami and Cipulir.

Fahrurozi, head of the water resources division of the Public Works Agency, said that embankment berms in Jakarta were in relatively in good condition. Of 26 dams in Jakarta, he said, six had completed berms, including Situ Babakan, Mangga Bolong and Situ Rawa Dongkel.

Fahrurozi said that at each dam there are officials who monitor water levels and infrastructural integrity.

“If they find something is wrong, they should report it to the agency as soon as possible to prevent breaches from happening,” Fahrurozi said.

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