Part Of Jakarta Research Articles

Analysis of Compound Flooding in the Cakung Drain Area, DKI Jakarta Province

Cakung Drain is an artificial river located downstream of the Cakung and Buaran Rivers, established as part of Jakarta's flood control infrastructure. Administratively, the upper section of Cakung Drain is located in East Jakarta, while the lower section is in North Jakarta. The current capacity of Cakung Drain is insufficient to handle the flow during flood conditions, leading to persistent flooding in the area. Flood conditions downstream of Cakung Drain are exacerbated by the potential for Compound Flood, resulting from the simultaneous occurrence of two extreme conditions. Various initiatives to manage floods have been implemented in the Cakung Drain area. This study aims to evaluate the flood risk in the Cakung Drain area before and after the implementation of flood management structures, considering the impact of discharge and tidal conditions downstream influenced by waves and storm surges. Flood modelling is executed using HECRAS software employing both 1D and 2D approaches. The study's findings reveal that the flooded area under existing conditions spans 7.065 km2. Under design conditions, flooding persists with an area of 4.15 km², attributed to flood overflow in downstream areas where embankments have not been constructed.

Green Open Space and Barren Land Mapping for Flood Mitigation in Jakarta, the Capital of Indonesia

High levels of rainfall, tidal flooding, land subsidence, intensified urban development, scarce barren land and a shortage of green open spaces (GOS) are contributing factors to the persistent flooding in Jakarta. Therefore, this study was conducted to map the GOS, built-up, and barren land in the city in order to calculate the biopore infiltration hole (LRB) potential for water infiltration as part of Jakarta's flood mitigation efforts using the Landsat 8 operational land imager (OLI). The Landsat data acquired on September 11, 2019, with path/row 122/064 were processed using the Fast Line-of-Sight Atmospheric Analysis of Spectral Hypercubes (FLAASH) method for the radiometric correction, and geometric correction with a root mean square error (RMSE) of 7.57 meters. Moreover, the normalized difference vegetation index (NDVI) was applied to classify the GOS, the normalized difference built-up index (NDBI) for the built-up areas, and the normalized difference barren land index (NDBaI) for barren land areas which were further confirmed using NDBI to distinguish them from the built-up areas. It is also important to note that the LRB potential was calculated by adding the GOS and barren land, dividing the result by the ideal land area multiplied by the ideal number of holes. The results showed that the GOS, built-up area, and barren land were 8.34%, 85.29%, and 2.48%, respectively. Furthermore, the LRB potential through the optimization of GOS and barren land was found to be 70.06 km2 and produced 16,816,248 LRB (18.27% of total needed). The realization of this value is expected to reduce the potential inundation in Jakarta by 15.6%.

The Use of Laser Precipitation Monitor (LPM) of Disdrometer and Weather Radar to Determine the Microphysics Characteristics of Extreme Rainfall in Jakarta. (Jakarta Flood Case Study February 25, 2020)

Heavy rains on February 24, 2020, caused flooding in most parts of Jakarta and its surroundings. The one-day observation of accumulated rainfall from the Laser Precipitation Monitor (LPM) was recorded at 358.6 mm/day at the Kemayoran station on February 25, 2020, at 00.00 UTC (07.00 Jakarta Time). In this study, analysis of the microphysical characteristics of extreme rainfall using LPM installed at Kemayoran meteorology station and weather radar at Cengkareng meteorology station with a spatial radius of 250 km. LPM is used to measure the diameter of the raindrops, the velocity of falling raindrops, LPM reflectivity, and the amount of accumulated rainfall with time resolution per minute and stored in excel data format. While the weather radar is used to measure the reflectivity spatially and temporally in the data volume format (.vol). The method used is, first, to find the relationship between LPM reflectivity and the amount of LPM rainfall with regression analysis. Second, the radar reflectivity is converted into estimated rainfall intensity for the Jakarta area and its surroundings. The results of this study found a relationship between LPM reflectivity (X) and rainfall accumulation LPM (Y) to form a regression relationship with the formula Y = 0.013X with R2 = 0.3777. Based on the record of the LPM time series, the peak of rainfall occurred at 18.17 UTC with 1000 raindrops, the maximum fall speed was 10 m/s, and the maximum diameter is 8.5 millimeters. Based on the results of microphysical measurements of LPM, spatial plots, and vertical cross-section radar, it can be concluded that flooding in Jakarta is due to heavy rain from convective clouds.

Sebuah Pola Cluster Geospatial Eksplorasi Kejahatan Narkoba di DKI Jakarta

This study is focused on building some visualizations of crimes that occur in the Jakarta area in general, and specifically on drug problems. As the largest city in Indonesia, Jakarta faces the highest number of crimes throughout Indonesia. But unfortunately, there is a lack of geospatial visualization about crime in Jakarta. The visualizations are presented as some cluster models. These models show which parts of Jakarta with a high level of crime, the biggest crimes in Jakarta, and the types of crimes that occur in Jakarta. The biggest crime in Jakarta is also explained with some additional information such as the type of crime, age, and distribution. Clustering is divided into three, which are high, medium, and low. The grouping model was built using Tableau with the K-means algorithm. The results of this study can be used for the Provincial Government of DKI Jakarta to make strategic plans to develop actions that can reduce crime rates in Jakarta.

Spatial negotiations in domestic space of the home-based garment industry in Kampung Tambora, Jakarta

With a population of around 260.100 and covering an area of 5.4 km2, Kampung Tambora is one of the densest urban areas in Jakarta. The area is well known for its home-based garment industry, which supports the livelihood of the community. Typically, several houses in one alley run the garment industry business, where both men and women work and live under the same roof. The study aims to understand how all actors in the home-based garment industry negotiate with the limited space to fulfill domestic and working needs. Three houses were selected for observation to understand how all involved actors maximize the use of the limited space through spatial interruption in domestic space. The study found that the actors define the activities through the utilization of space, the allocation of spatial functions, and symbolizing objects. Multi-story houses were built to expand space and enable the owners to work without disrupting the privacy of domestic activities. Although the actors of the home-based enterprises found ways to cope with the issues of crowding, alternative ideas are needed to increase their well-being and improve the environmental quality of similar high-density urban settlements in many parts of Jakarta.

The Prevailing 2013 Curriculum in Junior High School Practice: Teacher Perspective

The 2013 Curriculum has been implemented in various schools in Jakarta. Although, the concept has been debated among teachers, and practitioners, some private and public schools in Jakarta have fully implemented this curriculum. The main purpose of this study was to examine teachers understanding of the prevailing 2013 Curriculum. This study used mix methods. The quantitative method was used to examine the teachers’ competence about the 2013 Curriculum, while the qualitative method was used to strengthen and explore teachers’ responses about curriculum in classroom practices. There were three different aspects that evaluated such as training period, classroom practice, and students' classroom engagement. The participant included 125 junior high school teachers from different parts of Jakarta. Data were collected through an online survey with a Likert scale. Data were analyzed by descriptive statistics. The result of this study reported that teachers have enough time to get their training but they need extra time to prepare for classroom practice. Students who be engaged the 2013 Curriculum in classroom practice have been supported to work collaboratively with their peers. Teachers need to be prepared such as equipment, classroom plan, book for the teacher, and time for meeting among their peer teaching. In the class practice, teachers need allotted time to prepare for teaching and examination.

Local History of Jakarta and MulticulturalAttitude (Historical Local Study of Betawi Ethnic)

This is a literature review about local history of Jakarta and multicultural attitude. In the context of local history of Jakarta, ethnic Betawi as ethnic origin Jakarta is formed from the process of inter-ethnic assimilation imported by the Dutch colonial government in its political and economic interests. In its development, the Betawi ethnic group continued to strengthen and succeeded in establishing their own distinctive identity as well as disturbing with other ethnic groups in Indonesia, although in their present development their existence is decreasing due to development interest which is not able to open wide room for Betawi ethnicity itself because various causes. The Betawi ethnic group has a strong identity concerning Betawi cultural heritage such as strong religious soul, respect for diversity, friendly, homoris, helpful, open, tolerant to differences and so on. As a part of Jakarta's local history, ethnic Betawi history can be explored as a source of inspiration and a source of awareness in instilling multicultural souls in Jakarta, as a metropolitan city with increasingly diverse ethnicity towards social life within the framework of peace and harmony.

An integrated assessment framework for land subsidence in delta cities

Abstract. In many delta cities land subsidence exceeds absolute sea level rise up to a factor of ten by excessive groundwater extraction related to rapid urbanization and population growth. Without change, parts of Jakarta, Ho Chi Minh City, Bangkok and numerous other delta (and coastal) cities will sink below sea level. Increased flooding and also other widespread impacts of land subsidence result already in damage of billions of dollars per year. In order to gain insight in the complex, multi-sectoral aspects of subsidence, to raise awareness and to support decision making on appropriate adaptation strategies and measures, an Integrated Assessment Framework (IAF) for subsidence is introduced, illustrated by several (delta) case studies. Based on that a list of 10 generic key issues and possible solutions is presented in order to further develop and support a (generic) approach how to deal with subsidence in current and future subsidence-prone areas. For exchange of experiences and knowledge development.on subsidence in deltas the Delta Alliance, a knowledge network of deltas worldwide, can be supportive.

Sinking coastal cities

Abstract. In many coastal and delta cities land subsidence now exceeds absolute sea level rise up to a factor of ten. A major cause for severe land subsidence is excessive groundwater extraction related to rapid urbanization and population growth. Without action, parts of Jakarta, Ho Chi Minh City, Bangkok and numerous other coastal cities will sink below sea level. Land subsidence increases flood vulnerability (frequency, inundation depth and duration of floods), with floods causing major economic damage and loss of lives. In addition, differential land movement causes significant economic losses in the form of structural damage and high maintenance costs for (infra)structure. The total damage worldwide is estimated at billions of dollars annually. As subsidence is often spatially variable and can be caused by multiple processes, an assessment of subsidence in delta cities needs to answer questions such as: what are the main causes? What is the current subsidence rate and what are future scenarios (and interaction with other major environmental issues)? Where are the vulnerable areas? What are the impacts and risks? How can adverse impacts be mitigated or compensated for? Who is involved and responsible to act? In this study a quick-assessment of subsidence is performed on the following mega-cities: Jakarta, Ho Chi Minh City, Dhaka, New Orleans and Bangkok. Results of these case studies will be presented and compared, and a (generic) approach how to deal with subsidence in current and future subsidence-prone areas is provided.

Synergies between climate change adaptation and mitigation in development

PurposeThe purpose of this paper is to understand how cities at different stages of development each subject to its own challenges in adapting to climate change can manage greenhouse gas (GHG) emissions.Design/methodology/approachCase studies are undertaken for three cities: Amman, Jakarta and Dar es Salaam, including determination of GHG emissions and analysis of climate change data (where available) for each.FindingsIn Amman, the most climate‐sensitive municipal service is water; Jordan is exceptionally dry, and nearly 15 per cent of all electricity consumption is by the water authority. Jakarta has already experienced extreme flooding. The climate vulnerabilities associated with sea‐level rise are intensified by subsidence in parts of Jakarta. Alternating floods and droughts are climate impacts already experienced in Dar es Salaam. Droughts have impacted Tanzania's electricity infrastructure disrupting hydroelectricity production, requiring new natural gas infrastructure to maintain power, thereby increasing GHG emissions. Nonetheless, Dar es Salaam's GHG emissions at 0.56 t CO2e/cap are small compared to Amman and Jakarta at 3.66 and 4.92 t CO2e/cap., respectively.Originality/valueSynergist development strategies, addressing climate change mitigation and adaptation are suggested. In Amman an increased share of photovoltaic electricity production might be used for service provision, especially for energy needs surrounding water supply. Advanced slum upgrading in Jakarta could see relocation of the at‐risk poor to safe areas with energy efficient homes connected to public transit and decentralized, community‐based electricity generation. The focus in Dar es Salaam community‐based waste‐to‐energy facilities would reduce climate change impacts and vulnerabilities while addressing energy poverty in poor communities.