Indonesian Journal of Geography
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Improving the Effectiveness of Disaster Mitigation in Wonogiri Regency, Indonesia Using House of Risk Method
Get PDFWonogiri Regency, the Republic of Indonesia, is an area that has potential to be affected by various types of disasters. This study aims to identify the types of disaster potentials in the Wonogiri Regency and to provide recommendations for effective disaster mitigation strategies that can be effectively implemented by the Regional Disaster Management Agency (Badan Penanggulangan Bencana Daerah or BPBD in short) of the Wonogiri Regency during 2021-2026 time period by using the House of Risk (HoR) method. The study found that floods, landslides, strong winds, volcanic eruptions, earthquakes, tsunamis, forest and land fires, droughts, and extraordinary events are likely to take place in the regency. The implementation of the HoR phase 1 yields 19 disaster risk events and 19 disaster risk agents. The use of Pareto diagram to the disaster risk agents results in 8 dominant risk agents of disaster, namely “Unstable ground”; “The trees are too old and fragile”; “The trees are too dense”; Lack of water resources”; Heavy rain intensity”; “Struck by disaster materials”; “Epidemic of a disease”; and “The building construction is not strong”. The implementation of the HoR phase 2 produces 15 mitigation strategies along with their priority order in which the 5 mitigation strategies with the highest priority are “Working with related parties to reduce the potential of disasters”; “Conducting socialization and education of disasters”; “Establishing disaster-resilient villages”; “Mapping disaster-prone areas”; and “Training for disaster volunteers”.
Source Determination of Debris Avalanche Deposit based on the Morphology and Distribution of Hummocky Hills on the Northeastern Flank of G. Sundoro and G. Sumbing, Central Java, Indonesia
Get PDFThe presence of hummocky hills as a typical product of debris avalanche deposits is prominently visible in the northeastern flank of G. Sundoro and G. Sumbing, Temanggung, Central Java. In an attempt to better understand the past behavior of both G. Sundoro and G. Sumbing, we identify the source of the debris avalanche deposit. Interpretation is performed on the basis of the assumption of two possible sector collapse sources, i.e., G. Sundoro and G. Sumbing. The Sumbing source scenario is assumed as freely spreading type considering 1) distribution of the hummocky hills are relatively on the northeastern flank of the volcano, and 2) the present crater structure on the summit of the volcano which is opening to the northeast. The Sundoro source scenario is assumed as valley-filling type considering the distribution of the hummocky hills are relatively on the eastern flank of Sundoro extended to the far distal area and bounded by older high topography of G. Sumbing and North Serayu Mountains. The source identification was done on the basis of field observation of the deposit lithological characteristics combined with image analysis, including hummocky hills morphometry, displacement angle, and spatial distribution. Image analysis identifies approximately 645 hummocky hills ranging from 1,851 mz to 623,828 mz and average of 23,482 m2. Petrographic analysis of 5 representative block lava samples shows variation of olivine basalt, pyroxene andesite, to hornblende andesite. The results show that big size hummocky hills dominate the western side, while small size on the east. Displacement angle varied following the valley orientation with typical downslope topography. These suggested that the hummocky hills were originated from G. Sundoro as a valley-filling debris avalanche deposit
Determination of Groundwater Flow Pattern in the basement complex terrain of Ado-Ekiti, Southwestern Nigeria
Get PDFHydrostatic level sampling, geo-referencing and Geographic Information System were employed to delineate the major groundwater recharge / discharge zones, the groundwater flow direction and the groundwater divides in Ado-Ekiti metropolis with the objective of groundwater resource protection. Static water level measurements were made from 108 hand – dug wells evenly distributed on a regional basis. The latitudes, longitudes and elevations above mean sea level of the well points were measured using the Global Positioning System. A mean value of 5.84 ± 2.35 m above mean sea level was observed for the depths to the static water level with a mean value of 408.27 ± 46.06 m above mean sea level for the groundwater head. The contour maps obtained enabled the delineation of the major groundwater recharge / discharge zones, the groundwater flow direction and the groundwater divides with the regional tendency of the underground flow approximately lying along the Northwest – Southeast direction and groundwater divides along the South – Eastern/ South – Western axes of the Central portion. Strict environmental ethics must be enforced around the groundwater recharge / discharge zones and flow directions in order to avoid groundwater contamination
Climate Change Impact Analysis on Food Availability in the Province of Kalimantan Utara, Indonesia
Get PDFClimate change directly affects crop yields as a measure of food availability by, for example, causing harvest failure. El Niño and La Niña are two weather patterns affecting the climate of Indonesia, a country at low latitudes, and reportedly increasing its vulnerability to food insecurity. This research was designed to analyze climate change impact on food availability in the Province of Kalimantan Utara using secondary data(temperature, rainfall, and agricultural production) as the base data. It employed quantitative descriptive analysis to explain the study results expressed in maps, tables, and graphs and the regression technique to determine climate change impact on food availability. The regression analysis revealed that climate change significantly shaped the availability of rice (0.008) and vegetable commodity (0.000) but posed insignificanteffects on tubers, legumes, and fruits. Apart from climate change, food availability also depends on land management, land suitability, capital, technology, and cultivated plant variet
The Preservation of the Javanese Language in the Special Region of Yogyakarta
No full textThe purpose of this study is to map the vulnerable Javanese language in the Special Region of Yogyakarta, namely in the City of Yogyakarta and in the regencies of Sleman, Gunungkidul, Kulon Progo, and Bantul. Furthermore, it seeks to understand the role of different agents in preserving the Javanese language in those areas. Due to the dominating use of Indonesian language, the Javanese language has decreased in usage in various modes of communication in schools especially Jawa krama (medium-register variety). Making this language vulnerability mapping is important to locate in the context of the region, the language vulnerability that occurs more than other regions. This mapping can be used by the policy makers to strengthen the Javanese language used in the regions. A geographic information system was used to map the language's vulnerability in this region. The findings of this research are, first, there is an even distribution of the level of language vulnerability throughout the region, especially in the declining usage of Jawa krama. Second, schools no longer serve as agents in the preservation of the usage and competence of the Javanese language, especially Jawa krama. Third, family and social environments still hold potential for the preservation of the Javanese language, although mostly for Jawa ngoko.
The Impact of Urban Sprawl on the Socioeconomic Conditions of the Population in Tamanan Village, Indonesia
Get PDFThis study aimed to analyse the impact of urban sprawl on the (1) social, (2) economic, and (3) technological conditions of the population in Tamanan Village, on the outskirts of Yogyakarta City. For data collection, this survey research employed structured interviews with 40 respondents selected through multistage random sampling. It also used complementary in-depth interviews with seven (7) purposively sampled key informants to deepen the analysis. The answers from the structured interviews were analysed with descriptive statistics in the form of single-frequency tables, while the data derived from the in-depth interviews were processed using a qualitative descriptive approach. The results show that the impact of urban sprawl on the social (37.5%) and economic conditions (40%) was mostly high, while the effect on the technological conditions of the population in the study area fell mainly under the medium category (47.5%). In conclusion, the phenomenon of urban sprawl in the study area has affected the social, economic, and technological conditions of the population
Development of Meta-Geosystems of Tourist and Recreational Clusters
Get PDFThe study aims to find a key to the problem of managing cultural heritage systems in the example of the Temnikov-Sanaksar cluster located in Eastern Europe. This area is situated between the forest-steppe of the layered-tier Volga upland and the forest geosystems of the layered Oka-Don lowland. The article applies an interdisciplinary approach to solving the problem of optimizing inter-component relationships in the meta-geosystems of tourist and recreational clusters. The sustainable development of meta-geosystems should be based on multifactorial information support, which implements the most important condition for the effective economic development of landscapes through the formation of the regions’ spatial data infrastructure. In order to consistently optimize meta-geosystems of different hierarchical levels, it is necessary to solve several emerging issues, such as assessing the strength and nature of inter-component connections in geosystems, determination of factors describing the territorial variation of the properties of geosystems, interpreting and substantiation the semantics of the selected basic factors
Elevating the Community-Based Approach towards River Management: A Case Study of Squatter's Community in Inanam-Likas River Basin in Sabah, Malaysia
Get PDFRiver pollution is one of the major threats to the environment worldwide, especially in developing countries such as Malaysia. Although numerous actions, policies and efforts to alleviate river pollution, the issue continues to hurt Malaysia’s environmental sustainability. Based on the case study of the Inanam-Likas river basin situated on the western coast of the state of Sabah, in East Malaysia, this paper proposes an integration of a more inclusive approach toward communities in river management. This paper suggests the inclusion approach in river management by squatter communities who are residents along the riverbanks as part of the stakeholders alongside governmental and non-governmental agencies. As such, this study introduces this approach as a community-based to the river management policy facilitated by the local authorities and other relevant agencies. Without community support, effective mitigation strategies and relevant policy toward river management, river pollution will continue to threaten environmental sustainability.
Smart City Approaches to Public Spaces and Services during and after COVID-19: Case Studies in Four Capital Cities
Get PDFCOVID-19 pandemic was reported to modify people’s behaviour in using public spaces and accessing services. This fact has become a critical input related to future city development strategies, space arrangements, and the implementation of smart city. Therefore, this study aims to 1) Identify efforts in several cities during COVID-19 pandemic, specifically concerning the use of public spaces and services, and 2) Compile the outlines of future urban planning strategies after the pandemic. The aspects related to the use of Information and Communication Technology (ICT), space arrangement, and urban environment are discussed. The analysis is based on case studies in four capital cities, namely Jakarta, Paris, Bucharest, and Canberra. Furthermore, field observations and in-depth interviews are used to emphasize changes in the function and use of public spaces and services during and after the pandemic. The result shows that differences and common elements configure the transformations of urban spaces since changes in the use of public spaces are closely connected to efforts to combat the pandemic. Meanwhile, in public services, changes are associated with the increasing use of ICT and Internet of Things (IoT). In the future, cities need to show their visions according to the local conditions supporting better spatial arrangement and management of urban environment due to ICT and IoT prominence
Temporal Assessment of the Effect of Flooding Vulnerability on Agricultural Land Use in the Gambia
Get PDFFlooding is a significant environmental problem, projected to intensify from 2010 to 2030. This natural disaster has affected several regions globally, leading to loss of life and property, community disruption, economic loss, injuries, and deaths. Factors contributing to flooding include heavy rainfall, rising sea levels, lowlands, waterways, climatic variations, wetlands, soil types, and unplanned urban settlements. The most severe case in the history of the Gambia struck in 2022. Therefore, this study aimed to identify areas vulnerable to flooding and the effect on agricultural land in the Gambia, as well as suggest preventive measures. The method adopted included the collection of secondary data from Landsat ETM imagery, Digital Elevation Model, rainfall data, Copernicus Global Land Services (CGLS), and Food Agricultural Organisation soil maps. The satellite imageries were processed and classified using ArcGIS 10.7.1, generating land use and land cover, slope, drainage density, rainfall, and soil maps. ArcGIS, combined with the Analytic Hierarchy Process (AHP), was used to integrate these maps to produce a vulnerability map for the study. The results showed areas with very high, high, moderate, low, and very low vulnerability. Based on the classification, coastal and lowland regions were in the high category. Therefore, this study recommended the construction of water barricades in vulnerable coastal areas to mitigate the disaster.