Identifying shoreline changes in coastal areas is significant in order to achieve success in coastal management and planning. Understanding the shoreline changes and the driving factors can be an essential reference in developing appropriate preventive measures. This study analyzed changes in shoreline on the downstream area of Cisadane Watershed by utilizing multispectral Landsat Satellite Imagery from 1972 until 2019. The results of this study indicate that in the downstream region of the Cisadane River, there has been significant accretion. That can be caused by the Cisadane River carrying a lot of material, which then settles and forms new land. In other places, however, along the coast of the Cisadane watershed, abrasion generally occurs in residents’ ponds areas, such as Kramat Village and Lemo Village, causing community losses. Abrasion in this area occurred due to ocean waves, sea-level rise, and the lack of mangrove areas.

This study aimed to determine the improvement of community knowledge of the tsunami disaster before and after being given training. This study was located in Sawarna Village, Bayah Subdistrict, Lebak Regency, Banten Province. The population in this study was the Tourism Awareness Group (POKDARWIS). This research uses the descriptive quantitative method, while data was collected using a questionnaire for pre-test and post-test. The Paired Sample T-Test analyze was used to determine whether or not there was an improvement of community knowledge of the tsunami disaster after training. The results showed that there was a significant improvement in community knowledge about tsunami disaster after training. Therefore, similars training needed to be carried out continuously by both the government and non-governmental organizations.

This study aims to determine the school vulnerability around Sinabung. This research was conducted in May to August 2018. Spatial analysis was used to determine school vulnerability of Sinabung eruptions. School vulnerability from ash and school vulnerability from eruption area was determined with buffering. There was three categories school vulnerability, namely hight, medium and low. It is known that there are 30 schools into the Sinabung volcanic eruption prone zone, 10 schools are in the volcanic lava flow prone zone, 44 schools are in the vulnerable zone of the Sinabung volcano, 5 schools are affected by lava flows, and 6 schools must be relocated due located in the hight vulnerability zone of Sinabung volcano. The Ministry of Education and Culture has just established and implemented a special disaster prevention education curriculum at all school levels since the 2011-2012 academic year.

Public transportation in Jakarta is one of the leading facilities which currently being improved by the local government. Transportation facilities in Jakarta are now being strived to be integrated. However, not all areas in Jakarta have access to public transportation. This study aim to show how public transportation, especially in Central Jakarta, can be reached by pedestrians. This research used a geographic information system-based approach for assessing pedestrian accessibility in metropolitan areas, focusing on access to public transportation stops and stations. This methodology attempts to provide integrated methods to urban planning and mobility planning and decision-making assistance, with the dual goals: (1) supporting sustainable and non-motorized mobility, and (2) also boosting the appeal of public transportation. There are two main steps in method. First, identify the pedestrian walking zone of urban spaces around public transportation nodes; and second, mapping the access times to create a detailed pedestrian isochrones, and calculate how residents (or how many opportunities and facilities) are well served by the public transportation system to measure accessibility levels. This study indicates that some of the main areas already have integrated public transportation facilities, but the stopping distance is quite burdensome for pedestrians to access.

Jakarta has approximately 40 percent of the area below sea level at high tide, one of which is located at Muara Angke. The area of Muara Angke experiences inundation and has groundwater contaminated by urban community activities and saltwater intrusion. As for the purpose in this research is two calculate the relationship between socioeconomic status and household water requirement. This research was conducted for 5 months from March to July during the Covid-19 pandemic. Respondents were 40 households which were determined by simple random sampling. Multiple regression is used to determine the relationship between the independent variables and dependent variable. The results showed that there was a strong relationship between socioeconomic status and household water requirement because the value was above 0.8. The value R Square obtained is 78.9% which can be interpreted that the independent variables contribute 78.9% to the dependent variable and remaining 21.1% is influenced by other factors. The most influential variable is the number of household members.