Session6 jan jaap brinkman deltares
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Transcript of Session6 jan jaap brinkman deltares
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JanJaap Brinkman, Deltares
Integrated GOI-GON Delta approach
Jakarta Coastal DefenceStrategy (JCDS) study
Ports & Logistics business forumOctober 10, 2011
Protection of Jakarta andNew Harbour Logistics
Excellent opportunitiesfor Jakarta
Rapid expansion of Jakarta
2000 - 2025
Floods from the sea - Subsidence
Pluit - November 26, 2007
Jakarta Coastal DefenseStrategy
Floods from the sea ‘ROB’Protection against subsidence
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ESA – Jakarta subsidence
Up to 18 cm/year
Up to 10 cm/year
Up to 12 cm/year
Jakarta Coastal Defence Strategy (JCDS) Study Heri Andreas 2011
Subsidence Map
Subsidence map of Jakarta 1974-2010:
-4,1 meter
-1,4 meter-2,1 meter
-0,7 meter
-0.25 meter
Total subsidence -25 up to -400 cm ; rate -0.5 up to -17 cm/year -4,1 meter
-2,1 meter-1,4 meter
-0,7 meter
-0.25 meter
First recorded of levelingdata were in 1974. Base
on acumulated data,interpolation and
extrapolation we can makesubsidence map of Jakartafrom year 1974 up to 2010.
Base on latest analysis of piezometricsurface data found that initial condition
of subsidence were probably on 1965.In this case in the near future we will try
to modeled subsidence map of Jakartafor year 1965 up to 2011
The elevated highway andprotecting dike to Sukarno Hatta
Without at least 15 closures2008 - 2010
FUTURE LAND SUBSIDENCE JAKARTA
PERIOD 2010-2030 (linear trend, no act on stopping GW extraction)
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Future Subsidence of JakartaSimulated future subsidence at Daan Mogot area (DNMG GPS Points)
Even though last water load is in 2010, the subsidence may continue with timeto at least 2100 where the value may reached 2,2 meter from 2010.
If drawdown increases 5 meter every 5 years after 2010 to 2030, therefore itwill lead to subsidence by 2030 with the value of 3,2 meter, and by 2100 withthe value of 5,7 meter from 2010.
Effects of Piezometric Head Recovery to 1995 value (15 meter recovery) by2015 will expected to give subsidence in 2100 with the value of 1,5 meter from2010
Effects of Piezometric Head Recovery to maximum head of the 3 aquifers of1995 values (i.e., -23 m head) by 2015 will expected to give subsidence in 2100with the value of 1,2 meter from 2010
Protection against floods from the sea
“Large scale intervention required for aresilient Jakarta”
Pluit 1989-2007 2007-2025 Total
Sea level rise 4-6 cm 4-6cm 8-12 cm
MinimumSubsidence
100-200 cm 100-200 cm 200-400 cm
Option 3
Offshore with main floodwaysclosed
Area ofDKI Jakarta
13 Rivers
EBCWBC
Futurepolder area
Higher landarea
CFW
Jakarta CoastalDefense Strategy
Option 3:Offshore with main
rivers closed
Development
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Jakarta Bay Northern connectionNew ‘free’ road-rail harbour connections
Harbour towards deeper water
Car and trucks
Heavy and light rail
Combination of Functions:Road System Development
• planned roadsystem for 2030
• need for integrateddevelopment
• Synchronize roadmap and JCDS
FromCoastal Defence
toCoastal Development
but alwaysTowards a safe and resilient
Jakarta
Thank you!
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