SciRepID - Scientific Publication Search

Publication Search

41,333 articles from 397 journals · 1,447 citations tracked

Showing 1-20 of 49

Analytics

Maharani Safitri; Rika Maryam; Oktaviana Br Ginting M; Vieronica Varbi Sununianti; Istiqoma Istiqoma +1 more

RISOMA : Jurnal Riset Sosial Humaniora dan Pendidikan 2026 Asosiasi Ilmuwan Pendidikan, Sosial, dan Humaniora Indonesia

Flood disasters have repeatedly affected Aceh Tamiang Regency for over fifteen years, causing significant material and socio-cultural losses. This study aims to examine the social response of the community through a literature review approach, using Jurgen Habermas's Communicative Action Theory as the analytical framework. Data were collected systematically from national journal articles, scientific proceedings, and academic reports related to flood mitigation and community social response in Aceh Tamiang. Data analysis was conducted using content analysis and thematic analysis techniques. The findings reveal that the community's response is primarily driven by local solidarity rooted in cultural values and local wisdom such as hadih maja. In Habermasian terms, this social response reflects the lifeworld domain, manifesting in voluntary collective action. However, a structural tension exists between the government's top-down system and the community's communicative rationality. Effective disaster mitigation requires the development of participatory public spaces that bridge the system and lifeworld, enabling the transformation from instrumental action to communicative action, thereby strengthening collective resilience against flood disasters.

Suci Ramayana; Fajrin Fajrin; Ilham Armi; Defwaldi Defwaldi

Venus: Jurnal Publikasi Rumpun Ilmu Teknik 2026 Asosiasi Riset Ilmu Teknik Indonesia

Tiku Beach in Tanjung Mutiara District, Agam Regency, West Sumatra is a 12.77 km coastal area experiencing continuous shoreline changes due to abrasion and accretion. This study aims to identify and map shoreline changes and calculate the area of abrasion and accretion in 2014, 2019, and 2024 using the Modified Normalized Difference Water Index (MNDWI) method based on Landsat 8 OLI satellite imagery. The MNDWI method utilizes the reflectance difference in the Green band (Band 3) and SWIR band (Band 6) to automatically separate the land-water boundary. Shoreline change analysis was performed using Net Shoreline Movement (NSM) and End Point Rate (EPR) methods through ArcGIS 10.8 software with the Digital Shoreline Analysis System (DSAS) extension. Analysis of 336 transects shows that accretion is more dominant than abrasion along Tiku Beach. The largest accretion was recorded at transect 230 with an NSM value of 71.3 m and an EPR rate of 7.12 m/year, while extreme abrasion occurred at transect 249 with an NSM value of -121.67 m and an EPR rate of -12.15 m/year. The evolution of the shoreline shows that in 2014 the coastline was still relatively stable, then in 2019 mild abrasion occurred in the west along with accretion in the east, and by 2024 this pattern became more pronounced. The results of this study are expected to serve as a scientific basis for decision-making in coastal disaster mitigation planning and sustainable coastal management in Agam Regency.

Putri Dwiya Agustin; Fajrin Fajrin

Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa 2026 Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Sutera Subdistrict is an area affected by floods and landslides, causing significant damage to residential areas. Most houses suffered severe damage and are no longer habitable, making housing relocation a crucial post-disaster response. This study aims to identify settlements located in disaster-prone zones and determine potential land areas for housing relocation in Sutera. The method applied involves scoring and weighting combined with spatial analysis of various physical parameters and disaster vulnerability levels.The results indicate that Sutera Subdistrict has considerable potential land for housing relocation, with the highest potential found in Nagari Amping Parak Timur. However, the physical characteristics of the area and variations in disaster vulnerability require selective and planned land utilization. Disaster vulnerability maps serve as an essential basis for spatial planning and development control, particularly in determining relocation sites. In addition, strengthening mitigation efforts and enhancing community preparedness are necessary to minimize disaster risks and support the development of a safer and more sustainable area.

Henry Farizal; Bambang Sulistyo; Darmawansyah Darmawansyah

Venus: Jurnal Publikasi Rumpun Ilmu Teknik 2026 Asosiasi Riset Ilmu Teknik Indonesia

Landslides in the Giritengah Catchment Area are influenced by several factors, including geological conditions, rainfall intensity, geomorphology, soil characteristics, and inappropriate land use practices, all of which affect regional spatial planning and environmental stability. This study presents a literature review that analyzes landslide vulnerability, evaluates the impact of land use changes, and proposes integrated Soil and Water Conservation Techniques (SWCT) to support sustainable land management. The analysis applies Geographic Information System methods using thematic map overlays such as rainfall distribution, slope gradient, geological structure, and land use patterns. The results show that areas categorized as having high landslide vulnerability cover 44.02% or approximately 158.69 hectares of the catchment area, while areas with very low vulnerability account for only 0.12% or about 0.79 hectares. Land use conversion, particularly mixed dryland agriculture, has increased landslide risk by reducing slope stability and increasing surface runoff. To address this issue, conservation strategies are recommended, including vegetative measures such as greening 38.51 hectares in settlement areas and implementing agroforestry systems across 218.48 hectares. In addition, structural measures such as three dam retainers and twenty gully plugs are proposed in both protected and cultivation zones to support disaster mitigation and align with regional spatial planning policies.

Dewa Gde Agung Wisnu Anantha; I Wayan Sudiarsa; I Kadek Adi Erawan; I Ketut Okta Suastika; Gde Wardika Nugraha

Merkurius : Jurnal Riset Sistem Informasi dan Teknik Informatika 2026 Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Indonesia, as a country with the highest seismicity in the world, requires an accurate earthquake prediction system through the use of the BMKG earthquake catalogue. This research aims to implement ETL-based data pipeline engineering to process 92,887 earthquake catalog entries for the 2008-2023 period into ready-to-use daily time series for the LSTM seismicity forecasting model. The ETL process includes raw data extraction, cleaning of 97% missing values columns on focal mechanism parameters, datetime conversion, daily resampling producing 5,200 entries with earthquake count, total magnitude, and average magnitude features, as well as Min-Max Scaler normalization for LSTM compatibility. The dataset was processed using Google Colab with a stacked LSTM architecture of two layers of 50 and 25 units, dropout 0.2, Adam optimizer, and a sequence window of 30 days to predict the daily earthquake count. The model trained for 100 epochs shows the ability to capture stable seismic activity trends with a consistent decrease in MSE loss, although it shows deviations in extreme spikes due to aftershock sequences. The ETL pipeline proved crucial in ensuring temporal consistency, 100% data completeness, and relevant physics representation, resulting in a reproducible end-to-end framework for disaster mitigation.

Ichfa Farida Ramadhani; Noor Endah Cahyawati

Jurnal Ekonomi, Akuntansi, dan Perpajakan 2026 Asosiasi Riset Ekonomi dan Akuntansi Indonesia

This study is motivated by the importance of financial and asset management strategies in supporting the operational effectiveness of the Regional Disaster Management Agency (BPBD) of Central Sulawesi, which plays a strategic role in disaster mitigation, preparedness, emergency response, and post-disaster recovery. The main problems addressed are how financial and asset management strategies are implemented, to what extent they affect operational effectiveness. The objectives of this research are to analyze the applied strategies, assess their influence on operational effectiveness, and identify challenges as well as relevant solutions.The literature review refers to public financial management theories, regional asset management, and previous studies highlighting the relationship between financial governance, accountability, and public sector performance. This study employs a quantitative approach with a descriptive design. Data were collected through literature study, observation, interviews, and questionnaires distributed to BPBD staff in finance and asset divisions. The analysis included validity and reliability tests, along with multiple linear regression to examine the effect of independent variables on operational effectiveness. The findings show that BPBD Central Sulawesi’s financial management strategy in 2024 achieved a realization rate of 89–100% in most programs, although imbalances were found in certain activities such as the disaster management system arrangement, which only reached 38%. In terms of asset management, fixed assets dominate with a book value of IDR 19.6 billion, with significant growth in equipment and machinery. Regression analysis results indicate an R² value of 0.817, meaning that 81.7% of operational effectiveness is influenced by financial and asset management strategies, while the remaining 18.3% is explained by other factors.The study concludes that financial and asset management strategies significantly affect BPBD’s operational effectiveness. Nevertheless, challenges such as limited human resources, inadequate information systems, and discrepancies in budget realization require solutions through capacity building, technology utilization, and improved planning mechanisms to optimize disaster management effectiveness.

Laily Purnawati; Helsa Adnanda Satria Cahya; Erik Wijaya; Yongki Ainun Ikhsan; Andri Wahyudi

Jurnal Riset Rumpun Ilmu Sosial, Politik dan Humaniora 2026 Pusat Riset dan Inovasi Nasional

Flood disasters are recurring hydrometeorological hazards that significantly impact social, economic, and environmental conditions in Tulungagung Regency. This study aims to analyze the flood disaster mitigation communication strategies implemented by the Regional Disaster Management Agency (BPBD) of Tulungagung Regency and to identify the roles, challenges, and implications of both internal and external communication in flood disaster management. The research employed a qualitative approach using a descriptive method. Data were collected through in-depth interviews with the Secretary of BPBD Tulungagung Regency, the Head of the Emergency and Logistics Division, the Head of the Prevention and Preparedness Division, and members of flood-affected communities. The findings reveal that BPBD Tulungagung Regency has attempted to optimize disaster communication during the pre-disaster, emergency response, and post-disaster phases. The effectiveness of these communication efforts remains limited due to several challenges, including inadequate communication infrastructure, varying levels of disaster literacy among community members, diverse geographical conditions, and insufficient coordination in internal and external communication. Pre-disaster communication plays an essential role in improving community preparedness, communication during emergency response supports timely and accurate decision-making, and post-disaster communication contributes to recovery processes and the strengthening of community resilience. This study concludes that optimizing disaster communication requires integrated information systems, improved human resource capacity within BPBD, and active community participation through community-based communication approaches to sustainably enhance resilience to flood risks.

Laela Rustiani; Bambang Agus Herlambang; Ahmad Khoirul Anam

Modem : Jurnal Informatika dan Sains Teknologi 2026 Asosiasi Profesi Telekomunikasi Dan Informatika Indonesia

Banda Aceh City has high vulnerability to tsunamis due to its coastal location directly facing the sea and being situated in an active tectonic zone. This study evaluates the spatial distribution of tsunami risk and assesses coastal conditions as disaster mitigation efforts using a mixed-method approach that combines quantitative analysis based on Geographic Information Systems (GIS) and qualitative analysis through field surveys and expert assessments. Three beaches were selected as study locations: Ulee Lheue Beach, Syiah Kuala Beach, and Alue Naga Beach, with risk assessment calculated using the formula Risk = (H × V) / C according to the BNPB framework and overlay techniques in GIS to create risk distribution maps. Coastal condition evaluation focused on coastal vegetation and protective coastal structures assessed using an ordinal scale of 1–5. Results show that Ulee Lheue Beach has the highest mitigation capacity with a score of 64.5% (good category), Syiah Kuala Beach reaches 57.5% (fairly good), while Alue Naga Beach has the lowest score of 28.3% (poor). Correlation analysis yielded a coefficient of r = 0.97, indicating a very strong positive relationship between coastal vegetation and protective coastal structures. Therefore, the study recommends strengthening mitigation strategies through improved protective infrastructure and optimization of coastal vegetation functions, particularly in high-risk areas, to reduce tsunami impacts in the future.

Dhimas Ari Yudha Pratama; Mochammad Fabian Athaya; Aurora Maria Sagak Abel; Thea Farina; Nuraliah Ali +1 more

Prosiding Seminar Nasional Ilmu Teknik 2026 Asosiasi Riset Ilmu Teknik Indonesia

This study examines community capacity building for flood mitigation in flood-prone regions of Central Kalimantan through disaster education, technical training, and the construction of an amphibious house prototype. Using a community-based disaster risk reduction (CBDRR) framework, the program integrates participatory training, field surveys, and adaptive structural innovation. Findings indicate a 40% increase in community knowledge based on  Community Empowerment Level Analysis results, active engagement of 35 participants in disaster education, and significant improvement in technical skills among 22 trainees involved in amphibious foundation construction. The prototype achieved 100% completion within four effective working days, demonstrating the feasibility of amphibious technology using locally available materials. Strengthening youth organization structures further enhances community readiness and institutional resilience. Overall, the integration of participatory learning and adaptive technology effectively builds community self-efficacy and disaster preparedness in flood-prone environments.

Subhan, Ahmad; Bambang Agus Herlambang; Ahmad Khoirul Anam

Router : Jurnal Teknik Informatika dan Terapan 2025 Asosiasi Profesi Telekomunikasi dan Informatika Indonesia

Flooding is one of the most recurrent natural disasters in Central Java Province, particularly during the rainy season. Diverse geographical characteristics, high rainfall intensity, and rapid urban development contribute to the region’s high vulnerability to flood hazards. According to the Central Java Statistics Agency, a total of 414 flood events and 407,784 affected victims were recorded between 2019 and 2021. This study aims to develop a web-based Geographic Information System (GIS) capable of mapping the spatial distribution and impact levels of floods across Central Java. The methodology includes collecting flood event data from the Central Java Statistics Agency, processing spatial data such as administrative boundary shapefiles, performing attribute integration between spatial and non-spatial datasets, and creating thematic maps using QGIS. The visualization outputs were exported into an interactive web format using the qgis2web plugin and subsequently integrated into a website developed with HTML, CSS, and JavaScript. The results show that the GIS system successfully visualizes flood-prone areas, identifies regions with high flood intensity, and enables users to explore detailed information through interactive digital maps. Additional website features—such as historical flood data, statistical summaries, and descriptive impact indicators—enhance the system's usefulness for disaster analysis. This study demonstrates the crucial role of GIS in supporting disaster mitigation, spatial planning, and policy evaluation related to flood management. Future research is recommended to incorporate more recent datasets and additional non-spatial variables such as rainfall intensity and floodwater depth to improve the system’s analytical accuracy and comprehensiveness.

Adelia Saras Nugraheni

Venus: Jurnal Publikasi Rumpun Ilmu Teknik 2025 Asosiasi Riset Ilmu Teknik Indonesia

The Special Region of Yogyakarta (DIY) is characterized by high seismic activity due to its proximity to the subduction zone and the presence of active fault systems, particularly the Opak Fault. The 2006 Yogyakarta earthquake revealed significant vulnerability in local building structures and highlighted the complex geological conditions governing seismic wave propagation. This study aims to calculate and map the Peak Ground Acceleration (PGA) distribution in Prambanan District, Klaten Regency—one of the areas closest to the 2006 earthquake source. PGA values were estimated using the McGuire attenuation relationship, based on a moment magnitude of Mw 6.3 and the hypocentral distance to 88 observation points distributed at approximately 900-meter intervals. The resulting PGA map indicates values ranging from 26.7 to 31.7 gal, with a clear spatial trend showing increasing intensity from the northern to the southern parts of the study area. Higher PGA values occur in regions near the Opak Fault and in areas dominated by unconsolidated volcanic deposits of the young Merapi formation. These loose sediments amplify seismic waves, resulting in stronger ground motion compared to areas composed of more compact sedimentary rocks. The spatial pattern of PGA corresponds well with the distribution of structural damage recorded during the 2006 earthquake. The findings emphasize the significant role of local geology and fault proximity in shaping seismic hazard levels. Consequently, this study provides essential insights for disaster mitigation strategies, land-use planning, and structural vulnerability assessment within the Prambanan area.

Luliana Luliana

Venus: Jurnal Publikasi Rumpun Ilmu Teknik 2025 Asosiasi Riset Ilmu Teknik Indonesia

This study aims to analyze the level of flood hazard in Baturaja Barat District, Ogan Komering Ulu Regency, by applying a spatial approach using Geographic Information Systems (GIS) through the overlay method. The analysis was carried out by integrating six main physical parameters, namely rainfall, land use, elevation, slope, river density, and soil type. Each parameter was assigned a score and weight according to its influence on flood potential and subsequently processed spatially to produce a flood hazard map. The results indicate that the Baturaja Barat District area is classified into three hazard levels: low (3.25%), moderate (70.64%), and high (25.84%). Areas with high hazard levels are predominantly characterized by densely populated settlements situated at low elevations and in close proximity to river networks, particularly in Tanjung Karang, Air Gading, Talang Jawa, Karang Agung, and surrounding villages. These findings highlight that land-use changes, topographic conditions, and the distribution of river networks play significant roles in increasing flood risk. The results of this study are expected to serve as a foundation for spatial planning, the strengthening of disaster mitigation policies, and the enhancement of community preparedness against flood hazards in the region.

Muhammad Amrul; Ika Devy Pramudiana; Sapto Pramono

Jurnal Penelitian Komunikasi dan Sosialisasi 2025 Asosiasi Peneliti dan Pengajar Ilmu Sosial Indonesia

This study examines the collaboration between the Regional Disaster Management Agency (BPBD) and community organizations, specifically the Forum for Disaster Risk Reduction (FPRB), in implementing community-based disaster mitigation policies in Tamanayu Village, Lumajang. Using a qualitative case study approach, the research explores the dynamics, processes, challenges, and successes of collaborative efforts in disaster risk reduction (DRR) at the local level. The analysis highlights the significance of participatory strategies, local knowledge, and community empowerment in enhancing disaster preparedness and resilience. The involvement of multiple stakeholders—including government, community members, academia, private sector, and media—underpins the practice of the Pentahelix concept, fostering an integrated approach to disaster mitigation. The findings reveal that effective collaboration depends heavily on mutual trust, shared understanding, and a robust institutional framework that embeds disaster mitigation within the social fabric of the community. Challenges identified include coordination issues, limited resources, bureaucratic barriers, and disparities in perception and capacity among stakeholders. Despite these obstacles, the community's proactive measures, such as self-organized simulations and local resource utilization, demonstrate increasing resilience and capacity. The study underscores the importance of strengthening local institutional support, continuous capacity building, and the integration of indigenous knowledge to ensure the sustainability of disaster mitigation efforts. Furthermore, strategic alignment and synchronization between BPBD's top-down policies and bottom-up community initiatives are crucial for effective implementation. The research provides valuable insights into how participatory governance and community empowerment can lead to more resilient societies capable of adapting to evolving risks, including climate-change impacts.

Irwanto Irwanto

ARDHI : Jurnal Pengabdian Dalam Negri 2025 Asosiasi Riset Pendidikan Agama dan Filsafat Indonesia

Indonesia is highly susceptible to natural disasters owing to its geographical location at the intersection of three major tectonic plates. Effective disaster mitigation requires active community participation through education and tangible environmental conservation measures. This community engagement initiative aimed to strengthen community capacity for disaster mitigation and environmental preservation through cross-sectoral collaboration involving the Regional Disaster Management Agency (BPBD), the Faculty of Agriculture at Pattimura University, and the Sagu Salempeng GPM Foundation. Implementation methods comprised disaster mitigation education, extension services on conservation plant cultivation, memorandum of understanding (MoU) signing, and seedling distribution to 12 representatives from 6 villages in Ambon City, Maluku region. Outcomes revealed enhanced community comprehension of disaster mitigation concepts and strengthened commitment toward planting productive species for environmental conservation purposes. This initiative contributes to community resilience development and reinforces Indonesia's Disaster Resilient Village program.

Asfida Rahma; Umi Akromah

Ikhlas : Jurnal Ilmiah Pendidikan Islam 2025 Asosiasi Riset Ilmu Pendidikan Agama dan Filsafat Indonesia

Wildfires in Los Angeles are a phenomenon that can be analyzed from two main perspectives: science and religion. From a scientific standpoint, these fires are triggered by a combination of natural factors, such as the Santa Ana winds that bring hot and dry air, and climate change, which extends drought periods and increases temperatures. However, human activities, including environmental exploitation, deforestation, and inadequate fire mitigation efforts, have exacerbated the situation. From an Islamic perspective, natural disasters can be seen as tests, warnings, or consequences of human negligence in maintaining environmental balance, as mentioned in the Qur'an (Surah Ar-Rum: 41). This study highlights that wildfires are not merely natural occurrences but also have spiritual dimensions. Islam emphasizes that humans are entrusted as stewards of the earth, responsible for preserving nature rather than passively accepting disasters. Therefore, the best approach to addressing wildfires is to integrate scientific understanding with religious values. Proposed solutions include science-based prevention efforts, such as sustainable forest management and fire mitigation policies, as well as spiritual awareness to appreciate and safeguard nature as a divine trust. By understanding the relationship between science and religion, humanity can take greater responsibility in disaster response and establish a more balanced and sustainable way of life.

Andi Prasetiyo

Jurnal Hukum, Administrasi Publik, dan Ilmu Komunikasi 2025 Asosiasi Peneliti dan Pengajar Ilmu Hukum Indonesia

The Info BMKG application is a digital platform developed by the Meteorology, Climatology, and Geophysics Agency (BMKG) to provide information on weather, earthquakes, air quality, and early disaster warnings. This application is expected to enhance public preparedness in facing potential natural disasters. However, in its implementation, the Info BMKG application still encounters several issues, one of which is delays in delivering weather and disaster information. This study aims to analyze the effectiveness of the Info BMKG application in providing weather and disaster information. The research applies Budiani's (2007) theory, using four indicators: Program Target Accuracy, Program Socialization, Program Objectives, and Program Monitoring. This study employs a qualitative descriptive method with data collection through interviews, observations, and documentation. The findings indicate that the Info BMKG application has made a significant contribution to supporting public preparedness for disasters. While the application is relatively effective in providing weather and disaster information in North Jakarta, further development is still needed. Improvements in information accuracy, notification speed, and enhanced public socialization will help improve the quality of the application’s services in the future.

Wulandari, Dhesi Kusuma; M. Fikri Akbar; Sandy Allifiansyah

Jurnal Ilmu Komunikasi, Administrasi Publik dan Kebijakan Negara 2025 Asosiasi Peneliti Dan Pengajar Ilmu Sosial Indonesia

This study explores the practice of participatory communication and creative production implemented by the Anggrek Waste Bank along the Ciliwung River as an educational strategy for flood disaster mitigation. The research aims to understand how community-based waste management initiatives can serve as platforms for environmental learning and social empowerment. Using a qualitative approach with a case study method, this study investigates social dynamics, interaction patterns, and meanings constructed by residents through collaborative waste management and creative production activities. Data were collected through observation, in-depth interviews, and documentation. The findings reveal that participatory communication is manifested not only in formal education, counseling, or campaigns, but also in everyday interactions, creative workshops, and collective community work. Creative products such as recycled crafts, soap made from used cooking oil, and eco enzymes function as symbolic communication media that persuasively convey ecological messages while providing tangible economic benefits. These practices foster a sense of ecological responsibility, strengthen social solidarity, and enhance community resilience to flooding. This study concludes that participatory communication integrated with creative production serves as an effective model for promoting sustainable behavior and community-based flood mitigation in urban environments.

Dewilna Helmi; Yossepus A Hallatu

International Journal of Education and Literature 2025 Lembaga Pengembangan Kinerja Dosen

Indonesia’s position along the Pacific Ring of Fire makes it highly vulnerable to natural disasters, highlighting the urgent need to integrate disaster mitigation into school learning. Geography, as a discipline that examines Earth’s physical and human phenomena, holds strategic potential for strengthening students’ disaster awareness and preparedness, especially in high-risk regions such as Ambon. The Merdeka Curriculum provides instructional flexibility that enables the incorporation of disaster-related themes into learning processes. This study aims to design and develop a disaster-mitigation-based geography teaching module for senior high schools in Ambon City. A qualitative case study approach was employed, involving classroom observations, in-depth interviews, and document analysis to explore existing teaching practices and needs. The study producede a comprehensive design for a disaster-mitigation-integrated geography module. The findings demonstrate that integrating disaster mitigation into geography learning through a structured module enhances the relevance, applicability, and effectiveness of instruction. This research contributes to strengthening disaster-responsive geography education within the Merdeka Curriculum and supports efforts to improve student preparedness in disaster-prone areas.

Asmul Wawan Kirana; Elisabeth V Wambrauw; Julian Wairata

Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil 2025 Asosiasi Riset Ilmu Teknik Indonesia

Flooding is a hydrometeorological disaster that frequently occurs in Jayapura City, especially in the catchment areas along the Acai River Basin. One of the main factors causing flooding is increased sedimentation triggered by massive land-use changes. This study aims to analyze the relationship between land conversion, increased sedimentation, and flooding in the catchment areas belonging to the Acai River during the period 2014–2024. The method used is a mixed-method approach that combines quantitative, qualitative, and spatial analysis. Data were collected through satellite image interpretation, field surveys, sedimentation measurements, and interviews with the community and related agencies. Spatial analysis was conducted to identify the dynamics of land-use changes and sedimentation zoning. Meanwhile, hydrological analysis was conducted using the Mononobe method and rational calculations to calculate the maximum flood discharge based on annual rainfall and runoff coefficient. The results of the study indicate that over the past decade there has been an increase in built-up land area of ​​more than 80%, which has resulted in an increase in runoff coefficients from 0.223 in 2014 to 0.370 in 2024. The maximum flood discharge has also increased significantly from 60.56 m³/s to 100.41 m³/s. Furthermore, river sedimentation has also increased drastically, especially in the middle and downstream parts of the watershed. The correlation map shows that areas experiencing significant land use conversion are also locations with high sedimentation levels and recurrent flooding. These findings indicate a strong link between land use conversion and increased flood risk through sedimentation mechanisms that provide river channel capacity. Therefore, an integrated watershed management strategy is needed, including controlling land use conversion and restoring riverbank vegetation to minimize the impact of future flooding.

Amelia Agustina; Hadi Purwanto; Neng Sholihat

Aljabar : Jurnal Ilmuan Pendidikan, Matematika dan Kebumian 2025 Asosiasi Riset Ilmu Matematika dan Sains Indonesia

This study aims to analyze the influence of the Problem Based Learning (PBL) model in science education on students’ environmental literacy and science communication skills at SMK Negeri 3 Pekanbaru, focusing on the topic of disaster mitigation. The research employed a causal comparative approach with a post-test only design, comparing two student groups: an experimental class using the PBL model and a control class using conventional teaching. The results revealed a significant difference in environmental literacy, with the experimental class achieving a higher average score (81.86) compared to the control class (62.05). This indicates that the PBL model is effective in enhancing students' understanding, awareness, and environmentally responsible behavior. The PBL approach encourages active student engagement and the application of knowledge to real-world scenarios, which is particularly beneficial in the context of environmental issues and disaster mitigation. By working through problems related to environmental challenges, students are likely to gain a deeper understanding of the topic, which fosters a sense of responsibility towards environmental sustainability. In terms of science communication, although the experimental class showed a higher average score (75.78) than the control class (72.92), the difference was not statistically significant. This may be due to a lack of intensive training in scientific discussions and presentations. While PBL encourages collaborative problem-solving and idea-sharing, students may still require more structured practice in presenting and communicating their findings clearly and persuasively. The integration of more structured activities focusing on science communication skills could further enhance the effectiveness of the PBL model. Overall, the PBL model demonstrates positive potential in improving both environmental literacy and science communication. However, to achieve its full impact, its implementation must be consistent, with a focus on providing students with additional opportunities to develop their communication skills.