scholarly journals STUDY ON FLOOD INUNDATION IN PEKALONGAN, CENTRAL JAVA

2014 ◽  
Vol 10 (2) ◽  
Author(s):  
Syam Nashrrullah ◽  
Aprijanto ◽  
Junita Monika Pasaribu ◽  
Manzul K Hazarika ◽  
Lal Samarakoon
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence ◽  
Northern Coast ◽  
Flood Inundation ◽  
Alos Palsar ◽  
Water Level Rise ◽  
Central Java ◽  
Inundation Area ◽  
Tidal Data

Tidal flood or ‘rob’ is a serious problem in many coastal areas in Indonesia, including Pekalongan in the northern coast of Java island. This study aimed to simulate the flood inundation area for different scenarios of sea level rise, also to investigate the possibility of land subsidence that may further aggravate the problem of flooding in Pekalongan. In this study, the MIKE-21 model was used to simulate and predict the flood inundation area. Tidal data were generated from the Tide Model Drive (TMD). The tidal flood simulations were carried out for three different scenarios of sea level rise: 1) current situation, 2) next 50 years, assuming no sea level rise, and 3) next 50 years, assuming 50 cm of sea level rise. Based on the results, the ranges of water level rise in Pekalongan for each scenario were 0.23-1.27 m, 0.36-1.38 m, and 0.65-1.53 m, respectively. Meanwhile, ground displacement maps were derived from the ALOS/PALSAR data using Differential Interferometric Synthetic Aperture Radar (D-InSAR) technique. Twelve level 1.0 images of ALOS/PALSAR data acquired in ascending mode during 2008 to 2009 were collected and processed in time-series analyses. In total, 11 pairs of interferogram were produced by taking the first image in 2008 as the master image. The results showed that the average of land subsidence rate in Pekalongan city was 3 cm/year, and the subsidence mainly occurred in the western part of the city.

scholarly journals Land Subsidence in Chiayi, Taiwan, from Compaction Well, Leveling and ALOS/PALSAR: Aquaculture-Induced Relative Sea Level Rise

2017 ◽  
Vol 10 (2) ◽  
pp. 40 ◽  
Author(s):  
Wei-Chia Hung ◽  
Cheinway Hwang ◽  
Yi-An Chen ◽  
Lei Zhang ◽  
Kuan-Hung Chen ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence ◽  
Alos Palsar ◽  
Relative Sea Level ◽  
Relative Sea Level Rise

Sea Level Rise on Tuban Coast in East Java and its Consistenty with MAGICC/SCENGEN Prediction

2017 ◽  
Vol 862 ◽  
pp. 83-89
Author(s):  
Marita Ika Joesidawati ◽  
Suntoyo ◽  
Wahyudi ◽  
Kriyo Sambodho
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Sea Level Rise ◽  
Sea Level ◽  
Human Activities ◽  
Northern Coast ◽  
Tidal Data ◽  
Global Values ◽  
Emissions Scenario ◽  
Impacts Of Climate Change

Sea level rise is one of the impacts of climate change and global warming caused by the increase of human activities leading to the increase of concentration of greenhouse gases in the atmosphere. The impacts of sea level rise itself will be greatly felt by coastal areas in island countries, one of them is Indonesia (specifically the district of Tuban). The purposes of this paper are (1) to indicate that tidal data in Semarang and Tuban (both of them are cities in the northern coast of Java) can be used to estimate the sea level rise in the region through the means of comparison, and (2) to compare sea level rise in MAGICC model and show that sea level trends for Tuban district are consistent with global values. The results shows that the tidal data in Tuban has a higher value than the tidal data in Semarang by a margin of 0.03 m, so the trend of sea level rise in Tuban is y = 0.002x + 0.751, consequently the sea level rise per year is 0.024 m. Comparison of sea level rises between the MSL data of Tuban district with MAGICC model indicates that the sea level trends for Tuban district (local) are consistent with global values, that is, in the year of 2100, the sea level rise will reach 2.64 m while emissions scenario that comes close is the WRE 550 scenario, that is, in the year of 2100, it will reach 2.9 m.

scholarly journals INSIGHT ANALYSIS ON DYKE PROTECTION AGAINST LAND SUBSIDENCE AND THE SEA LEVEL RISE AROUND NORTHERN COAST OF JAVA (PANTURA) INDONESIA

2018 ◽  
Vol 5 (1) ◽  
pp. 101
Author(s):  
Heri Andreas ◽  
Hasanuddin Zainal Abidin ◽  
Dina Anggreni Sarsito ◽  
Dhota Pradipta
Keyword(s):  
Global Warming ◽  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence ◽  
High Tide ◽  
Northern Coast ◽  
Tidal Inundation ◽  
Land Area ◽  
The City ◽  
Area Development

Land subsidence and the sea level rise is newly well known phenomenon around northern coast of Java Indonesia (PANTURA). The occurrence of land subsidence at least recognize at the first of the city or urban area development, while the sea level rise was recognize from several last decades corresponds to the global warming. Following the both phenomena, tidal inundation (in Javanese they call it “Rob”) is now becoming another newly well known phenomenon along PANTURA. In the recent years the tidal inundation comes not only at a high tide but even at the regular tide in some area. Sea level rise and the land subsidence are considered as the causes deriving the occurrence of tidal inundation. Dykes have been built against tidal inundation around PANTURA (e.g. in Jakarta, Blanakan, Pekalongan, Semarang, and Demak). Nevertheless, since the land subsidence and the sea level rise are believed to be continuing through times, insight analysis on these dykes “protector” is necessary. How long the dyke would effectively protect the land area would be highlight in this paper.

scholarly journals Modelling the combined impacts of sea-level rise and land subsidence on storm tides induced flooding of the Huangpu River in Shanghai, China

2013 ◽  
Vol 119 (3-4) ◽  
pp. 919-932 ◽  
Author(s):  
Jie Yin ◽  
Dapeng Yu ◽  
Zhane Yin ◽  
Jun Wang ◽  
Shiyuan Xu
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence ◽  
Huangpu River

Adaptation to Sea Level Rise in Cities: Lessons from Present Examples of Land Subsidence

2018 ◽  
Author(s):  
Miguel Esteban ◽  
Hiroshi Takagi ◽  
Laurice Jamero ◽  
Nguyen Danh Thao ◽  
Takahito Mikami ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence

scholarly journals Insar Maps of Land Subsidence and Sea Level Scenarios to Quantify the Flood Inundation Risk in Coastal Cities: The Case of Singapore

2020 ◽  
Vol 12 (2) ◽  
pp. 296 ◽  
Author(s):  
Joao Catalao ◽  
Durairaju Raju ◽  
Giovanni Nico
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence ◽  
Central Area ◽  
Coastal Areas ◽  
Sar Interferometry ◽  
Asia Pacific ◽  
Flood Vulnerability ◽  
Global Mean Sea Level ◽  
Global Sea Level

Global mean sea level rise associated with global warming has a major impact on coastal areas and represents one of the significant natural hazards. The Asia-Pacific region, which has the highest concentration of human population in the world, represents one of the larger areas on Earth being threatened by the rise of sea level. Recent studies indicate a global sea level of 3.2 mm/yr as measured from 20 years of satellite altimetry. The combined effect of sea level rise and local land subsidence, can be overwhelming for coastal areas. The Synthetic Aperture Radar (SAR) interferometry technique is used to process a time series of TerraSAR-X images and estimate the land subsidence in the urban area of Singapore. Interferometric SAR (InSAR) measurements are merged to the Representative Concentration Pathway (RCP) 4.5 and RCP 8.5 sea-level rise scenarios to identify projected inundated areas and provide a map of flood vulnerability. Subsiding rates larger than 5 mm/year are found near the shore on the low flat land, associated to areas recently reclaimed or built. The projected flooded map of Singapore are provided for different sea-level rise scenarios. In this study, we show that local land subsidence can increase the flood vulnerability caused by sea level rise by 2100 projections. This can represent an increase of 25% in the flood area in the central area of Singapore for the RCP4.5 scenario.

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