Harkunti Rahayu - Academia.edu (original) (raw)

Papers by Harkunti Rahayu

Sustainable and resilient infrastructure, May 26, 2024

Zenodo (CERN European Organization for Nuclear Research), Oct 3, 2022

Due to massive development in the urban and rural areas, there is a dramatic increase in the impa... more Due to massive development in the urban and rural areas, there is a dramatic increase in the impacted area and the amount of economic loss from the Ciliwung River Floods every year. Even though several research studies have identified the key drivers of the flood risk along the Ciliwung River Basin (CRB), addressing the problem has been limited to administrative boundaries. Because Ciliwung River Basin crosses two provinces and several cities and regencies, it is important to tackle future flood events using a transboundary approach. This study uses MICMAC analysis to recognize strategic flood risk drivers from key stakeholders' perspectives. In this study, 13 significant flood drivers were identified. Among those drivers, lack of control of spatial plans and weak stakeholder coordination and cooperation are found to be the critical drivers which influence all other flood drivers. Finally, this study proposes that a national-level development control regulation and an acting commission are established as a priority action for transboundary flood risk management in Ciliwung River Basin.

International Journal on Advanced Science, Engineering and Information Technology/International journal of advanced science, engineering and information technology, Apr 26, 2024

As the fourth world's longest coastline, coastal tourism has become a significant component of In... more As the fourth world's longest coastline, coastal tourism has become a significant component of Indonesia's economy. Approximately 57% of this coastline is prone to the deadliest coastal hazard, i.e., tsunami. The progressive development of the tourism industry has created a massive increase in built infrastructure, hotels, roads, electrical and water distribution systems, and an increased number of people, including tourists and tourism workers, in rural coastal tourism areas. Due to the tsunami threat, rural coastal tourism regions' economic and social development faces enormous potential losses in lives and infrastructure and disruption of economic activity, especially for small and medium business enterprises. However, this coastal tourism industry has failed to engage in proper disaster risk reduction strategy and tourism business resilient building in most tourist destination regions in Indonesia. To address these complex problems, this study explores the adaptation of the concept of Business Continuity Plan of a single enterprise to upscale to an area or zone, i.e., the Area Business Continuity Planning, to enhance the holistic disaster-resilient tourism industry in Indonesia, with Pangandaran as the study location. As a newly formed regency, Pangadaran is an emerging super-destination tourism area designated by national and provincial governments. This region experienced a devastating tsunami in 2006, and even today, its coastal communities live under the threat of tsunamis that South Java Megathrust can generate. Based on an in-depth and holistic study, this study finds the Pangandaran coastal tourism resilience level, recognizing critical stakeholders and identifying the collaborative BCP strategies in Pangandaran.

Natural Hazards

The paper investigates compound flooding from waves, sea surge and river flow in northern Jakarta... more The paper investigates compound flooding from waves, sea surge and river flow in northern Jakarta, Indonesia, which is a global hotspot of flooding, by combining process-based coastal and river models. The coastal hydrodynamic modelling of Jakarta Bay in Indonesia shows that coastal storms can lead to a substantial increase in sea water level due to wind and wave setup in the nearshore areas, including Muara Angke river inlet. The compound flood hazard from a range of flood scenarios was simulated and analysed. The results reveal that low-lying areas around the river inlet are prone to flooding even during regular, low-intensity storm events, while rarer storms caused extensive floods. Floods were not caused by direct overwashing of sea defences but by overspill of the banks of the river inlet due to high sea water level caused by wind set up, wave setup, and sea surge obstructing the drainage of the river and elevating its water level during storms. We also found that the sea level...

. Due to massive development in the urban and rural areas, there is a dramatic increase in the im... more . Due to massive development in the urban and rural areas, there is a dramatic increase in the impacted area and the amount of economic loss from the Ciliwung River Floods every year. Even though several research studies have identified the key drivers of the flood risk along the Ciliwung River Basin (CRB), addressing the problem has been limited to administrative boundaries. Because Ciliwung River Basin crosses two provinces and several cities and regencies, it is important to tackle future flood events using a transboundary approach. This study uses MICMAC analysis to recognize strategic flood risk drivers from key stakeholders' perspectives. In this study, 13 significant flood drivers were identified. Among those drivers, lack of control of spatial plans and weak stakeholder coordination and cooperation are found to be the critical drivers which influence all other flood drivers. Finally, this study proposes that a national-level development control regulation and an acting commission are established as a priority action for transboundary flood risk management in Ciliwung River Basin.

Environment & policy, 2023

International Journal on Advanced Science, Engineering and Information Technology

Successful mitigation of flood risk requires an integrated, basin-wide approach. This is particul... more Successful mitigation of flood risk requires an integrated, basin-wide approach. This is particularly important in transboundary river basins, where the actions of multiple stakeholders must be coordinated. The Ciliwung River, Indonesia, presents an example of a complex urban basin that crosses multiple administrative borders. The increasing frequency and severity of floods in the downstream capital city of Jakarta has highlighted the need for better river governance arrangements. However, it is unclear what form these arrangements should take. This paper aims to develop a conceptual framework that identifies the key concepts relevant to flood management and governance in transboundary river basins and how they relate to the situation in the Ciliwung. Key concepts were drawn from a review of the literature conducted using online databases and search engines. The framework firstly outlines the flood hazard itself in terms of drivers and impacts. It then goes on to establish the associated governance arrangements and identifies any interdependencies. The framework highlights multiple interrelated drivers of flood risk, both human and physical. There is also a range of governance issues related to capacities, coordination of institutions, and fragmentation of plans and policies. Due to flood risk and river management complexities, this conceptual framework provides much-needed clarity to develop improved management arrangements in the Ciliwung River Basin. It also sets a framework to facilitate future research on transboundary management in relation to flood risk in other urban and peri-urban river basins.

International Journal on Advanced Science, Engineering and Information Technology, 2021

Flood has become the recurring and prominent disaster risk in Indonesia's Capital Region, Jakarta... more Flood has become the recurring and prominent disaster risk in Indonesia's Capital Region, Jakarta. Heavy rain intensity merged with urban development issues, including urbanization, land subsidence, and water recharge land conversion causes the widening of flooded areas across Jakarta, Bekasi, Tangerang, and Depok. This causes the need for communities at risk to catch up in their institutional and non-institutional capacity to cope with the flood impacts during the rainy season each year. Thus, communities have learned to depend less on institutional capacities and invest in community resilience instead. This study assesses the community flood resilience factors found in current literature and compares them with the findings from community cases Kampung Melayu and Kebon Baru Urban Communities (Kelurahan) in Jakarta. This paper aims to validate and contrasts the key contributing factors to community resilience based on the literature and findings from flood-prone communities in two urban communities in Jakarta. Community resilience data were collected through town watching, interviews, and community engagement observation in two months. The study found that prominent factors for resilience within the community in these case study locations are leadership, activism, and volunteerism through periodic capacity building and community engagement activities across all sectors. Moreover, there is a need for mutual acknowledgment between community grassroots organizations and government authorities to enhance and accelerate resilience building. Keywords-Ciliwung River Basin; community resilience; urban neighborhoods; flood risk management; hydro-meteorological hazard.

Frequent occurrences of natural disaster with high impacts on urban area have become raising conc... more Frequent occurrences of natural disaster with high impacts on urban area have become raising concerns in this decade. It is not only because of geodynamic and geographical position of Indonesia that made the country highly prone to many natural hazards, but also increased number of high populated cities and number of people living in cities outnumbered those in rural area. Among those urban-centered disasters, the most frequent with severe accumulated loss is hydro-meteorological disaster. Meanwhile, obtaining a flood free city is very costly; a certain level of acceptable risk should be taken. Without comprehensive strategies that politically, socially and economically accepted by stakeholders, the existence of any disaster risk reduction countermeasures is less effective to confront risk perception and attitude of people living in high populated urban flood prone area. To cope with this disaster situation, effective flood early warning should be one of optimum solutions in saving ...

Posisi geologis Indonesia yang terletak pada pertemuan empat lempeng tektonik aktif telah menempa... more Posisi geologis Indonesia yang terletak pada pertemuan empat lempeng tektonik aktif telah menempatkan Indonesia sebagai negara rawan bencana gempa bumi dan tsunami. Sekitar 70% gempa bumi tektonik terjadi di dasar laut yangberpotensi menyebabkan tsunami, gempa bumi ini disebut gempa bumitsunamigenik.Secara statistik rata-rata hampir setiap 2 tahun sekali terjadi tsunami di wilayah Indonesia. Dari catatan sejarah tsunami di Indonesia, kejadian tsunami telah banyak menelan korban jiwa. Dua kejadian tsunami besar yang menelan banyak sekali korban jiwa adalah (1) bencana tsunami volkanik Krakatau tahun 1883 yang telah menelan korban sekitar 36.000 orang dan (2) tsunami Aceh 26 Desember 2004 dengan korban jiwa sekitar 227.898 orang (USGS, 2005). Bencana tsunami Aceh 2004 tersebut merupakan bencana fenomenal pada abad ini, tidak hanya dirasakan di Aceh dan Sumatera Utara, namun di beberapa negara seperti Srilanka, India, Thailand, Maldives, Malaysia, Myanmar, Bangladesh, dan Somalia di be...

Post-Disaster Governance in Southeast Asia, 2021

About the Series Disaster risk reduction is a process that leads to the safety of communities and... more About the Series Disaster risk reduction is a process that leads to the safety of communities and nations. After the 2005 World Conference on Disaster Reduction, held in Kobe, Japan, the Hyogo Framework for Action (HFA) was adopted as a framework for risk reduction. The academic research and higher education in disaster risk reduction has made, and continues to make, a gradual shift from pure basic research to applied, implementation-oriented research. More emphasis is being given to multi-stakeholder collaboration and multidisciplinary research. Emerging university networks in Asia, Europe, Africa, and the Americas have urged process-oriented research in the disaster risk reduction field. With this in mind, this new series will promote the output of action research on disaster risk reduction, which will be useful for a wide range of stakeholders including academicians, professionals, practitioners, and students and researchers in related fields. The series will focus on emerging needs in the risk reduction field, starting from climate change adaptation, urban ecosystem, coastal risk reduction, education for sustainable development, community-based practices, risk communication, and human security, among other areas. Through academic review, this series will encourage young researchers and practitioners to analyze field practices and link them to theory and policies with logic, data, and evidence. In this way, the series will emphasize evidence-based risk reduction methods, approaches, and practices.