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Banjir merupakan bencana yang sering terjadi di ibukota DKI Jakarta dengan kejadian terbesar pada tahun 2007. Penentuan langkah yang tepat dalam menyelesaikan masalah banjir dapat dibantu dengan pemetaan resiko banjir. Daerah studi kasus dalam penelitian ini adalah Kelurahan Bukit Duri, Kecamatan Tebet, Jakarta yang terletak di hulu pintu air Manggarai. Penelitian difokuskan pada estimasi bahaya banjir, kerentanan, kapasitas, dan resiko di daerah studi. Peta genangan banjir dikembangkan dengan model matematis aliran 1-D tak tunak DUFLOW dengan hidrograf banjir tahun 2007. Limpasan hidrograf banjir akan membebani daerah retensi dan menyebabkan variasi genangan. Indeks bahaya banjir dianalisis berdasarkan peta genangan dengan diverifikasi data lapangan. Analisis indeks kerentanan menggunakan parameter jaringan pipa dan kabel, jenis bangunan, sebaran populasi, dan potensi bahaya kolateral. Analisis indeks kapasitas memakai parameter kondisi pompa, tanggul, dan intervensi (peningkatan kewaspadaan banjir). Peta resiko dievaluasi menggunakan GIS dalam skenario optimis dan pesimis dengan persamaan: resiko = bahaya x kerentanan / kapasitas. Intervensi pada skenario optimis menunjukkan penurunan resiko signifikan di beberapa daerah, sedangkan pada skenario pesimis tidak berbeda dibandingkan kondisi eksisting. Peta resiko kondisi eksisting dianalisis serupa dengan keadaan aktual, dimana daerah studi merupakan daerah beresiko banjir tinggi karena perumahan penduduk yang padat dan kapasitas penanggulangan banjir yang tidak memadai.

Purpose This study aims to identify the gaps in current policy and propose a viable framework for policy improvement regarding people-centered tsunami early warning chain in Padang City. The objectives are: to describe the gaps and flaws in the current policy regarding local tsunami early warning chain, to identify potential actors to be involved in the tsunami early warning chain and to assess the roles and capacity of actors, and their potential for involvement in early warning. Design/methodology/approach This study is an exploratory study using social network analysis (SNA) on regulations and other legal documents, and primary data sources from a focus group discussion and semi-structured interviews. Findings The study found that the existed regulation lacks extension nodes to relay warnings to the populations at risk, often referred to as “the last mile.” Moreover, receiving warning information from both formal and informal sources is important to mobilize people evacuation more effectively during an emergency. The study found that mosque communities and disaster preparedness leaders are the potential actors who should be involved in the local early warning chain. Practical implications The research findings were presented as a recommendation to Padang City Government and have been legalized as the new tsunami early warning chain procedure in the Padang City Mayor Regulation 19/2018. Originality/value This research investigated local tsunami early warning dissemination in Padang City using SNA. The study demonstrates a close collaboration between researchers, practitioners and the community.

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Purpose This paper aims to describe an in-depth study that aimed to assess and develop a strategic disaster risk reduction plan to integrate climate change adaptation countermeasures in Cilincing, a North Jakarta City sub-district. Design/methodology/approach The study used a back-casting approach to cover hazard assessment induced by increased susceptibility, as well as vulnerability, both as a baseline study and projected up to 2045 at the micro level. The urban village (Kelurahan) level is the unit of analysis. The capacity analysis is used as baseline data, which is reviewed against the trend of the hazard and vulnerability. Findings The results of the study identify short-, medium- and long-term recommendations to integrate disaster risk reduction and climate change adaption. These include capacity building, especially emergency response capabilities, an increase of drainage capacity, improvements to transboundary management and minimising driving forces. Practical implications These findings at the micro level are very important to present a more holistic and realistic strategy that can be implemented until 2045, but also provides a basis for up scaling into metropolitan region planning. Originality/value This is a unique, micro-scale case study in the Cilincing sub-district of Jakarta that assesses and develops strategic disaster risk countermeasures and a reduction plan that integrates the effects of climate change, thereby addressing future disaster risk in Jakarta.