TIDAL AND WAVE ANALYSIS AND EMBANKMENT ELEVATION DESIGN OF MUARA ANGKE BEACH, PENJARINGAN SUB-DISTRICT, NORTH JAKARTA CITY, DKI JAKARTA PROVINCE
Jakarta is at risk of excessive flooding from the sea and rivers. In some places, there is water runoff that exceeds the embankment when the magnitude of sea waves and river discharge. Some of the suspected causes of this flooding are sea level rise, excessive groundwater extraction and land subs...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/79475 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Jakarta is at risk of excessive flooding from the sea and rivers. In some places,
there is water runoff that exceeds the embankment when the magnitude of sea
waves and river discharge. Some of the suspected causes of this flooding are sea
level rise, excessive groundwater extraction and land subsidence. Various efforts
have been made to control this problem, ranging from building polder, pumps,
retention reservoirs, coastal embankments, to offshore embankments. The current
program is the construction of coastal embankments. This research will determine
the design of Muara Angke coastal embankment elevation height that can
withstand flooding in the coastal area.
The main data required in designing coastal embankment elevations are tides,
wind, waves, sea level rise (SLR), and land subsidence (LS). The tidal data
required are MSL (mean sea level) and HHWL (highest high water level) design.
To obtain these data, Delft3D flow hydrodynamic modeling was initially
conducted. After that, the results of this modeling are processed with ERGTIDE,
ERGRAM, and ERGELV software to obtain both data. The MSL and HHWL
values are 1.415 m and 0.707 m (+MSL), respectively. Then, the wind data
required are V50 (50-year return period wind speed) and ? (wind direction of
incidence) of the design. These two data were obtained from era5 with values of
17.77 m/s and 315º respectively. Then, the required wave data are Hb (breaking
wave), Tp (peak wave period), Tm01 (average wave period) design. These three
data are obtained from the Delft3D wave modeling results. The values of the three
parameters are 1.75 m, 2.4 s and 1.8 s, respectively. The design SLR and LS
values are obtained from literature sources with values of 0.0075 m/year and
0.0437 m/year. Then, the parameters mentioned above are used as input for the
coastal embankment elevation calculation formula. The coastal embankment
elevation obtained is 9.5 m.
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