Category Archives: research

VULNERABILITY ASSESSMENT OF URBAN INFRASTRUCTURE TO CLIMATE CHANGE IMPACT. Case Study: SMA-SMP Buildings at Palembang City +)

Posted on March 18, 2010 by budhi| 1 Comment

Norma Puspita
Student, Postgraduate program of Infrastructure Management, Civil Engineering Department, University of Sriwijaya

Budhi Setiawan, Sarino
Lecturer, Civil Engineering Department, University of Sriwijaya

Abstract
Palembang yang merupakan kota sungai karena banyak dialiri anak-anak sungai yang bermuara ke sungai Musi yang membelah kota Palembang perlu mengantisipasi dampak – dampak perubahan iklim. Menurut Arief Anshory Yusuf dan Herminia Francisco (2009), kota Palembang menduduki peringkat ke 16 dari tempat (distrik) paling rentan terhadap perubahan iklim di Asia Tenggara. Berdasarkan laporan IPCC dampak perubahan iklim pada daerah pesisir pantai / sungai yang mempunyai resiko paling tinggi adalah badai tropis, banjir dan meningkatnya muka air laut. Menurut CSIRO (2007), jenis infrastruktur yang memiliki resiko paling tinggi terhadap dampak perubahan iklim adalah infrastruktur gedung atau bangunan. Tujuan dari penelitian ini adalah pengembangan dari kajian kerentanan tingkat meso – level (regional/propinsi) dan memberikan informasi tingkat kerentanan infrastruktur gedung sekolah SMPN/SMAN/SMKN terhadap dampak perubahan iklim di kota Palembang. Bagian paling utama untuk menentukan tingkat kerentanan adalah indeks kerentanan infrastruktur (IVI). Indeks kerentanan infrastruktur ditentukan berdasarkan indikator – indikator kerentanan infrastruktur gedung seperti jumlah pengguna gedung (murid, guru dan pegawai), luas gedung, jarak gedung dari sungai dan infrastruktur drainase. Tingkat kerentanan infrastruktur diklasifikasikan berdasarkan 3 level yaitu rendah (low), sedang (moderate), dan tinggi (high). Analisa akhir pada kajian kerentanan adalah analisa resiko dengan melakukan overlay antara bahaya (banjir dan kenaikan muka air laut) dan tingkat kerentanan infrastruktur gedung. Analisa yang dilakukan secara kualitatif menggunakan aplikasi ILWIS. Penelitian ini menghasilkan tingkat kerentanan infrastruktur gedung pada kondisi sekarang (current) dan proyeksi yang akan datang (future), yang divisualkan dalam peta kerentanan dan resiko kota Palembang.

Kata kunci: perubahan iklim, kerentanan, infrastruktur, IVI, ILWIS.

+) accepted to present at Konferensi Nasional Pasca Sarjana Teknik Sipil ITB , Campus Center ITB, 26 Mei 2010.

Aknowledgement
The authors would like to express their gratitude to Ambiyar Setiojati for providing framework and conceptual model of micro-scale of vulnerability assessment.

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Impacts of Climate Change on the Sustainability of Water Supply in Indonesia

Posted on March 15, 2010 by budhi| 2 Comments

Djoko S.A. Suroso, Ph.D
School of Architecture, Planning and Policy Development, ITB
Jl. Ganesha 10, Bandung.
Oman Abdurahman
Geological Agency, Ministry of Energy Resources and Minerals
Jl. Diponegoro 57, Bandung
Budhi Setiawan, Ph.D
Civil Engineering Department, Sriwijaya University
Jl. Srijaya Negara Bukit Besar Palembang

Abstract
The water sector is one of the most important sectors to be influenced by climate change impacts. The projected climate change will likely impose water shortage in several regions in Indonesia. Currently, for an example, the Java-Bali regions have already faced a deficit in its water balance, while for other regions like Sumatra, Sulawesi, Nusa Tenggara, and the Moluccas are projected in critical conditions. Based on climate projections, most regions in Indonesia will suffer from a gradual decrease of water supply due to temperature increase and rainfall changes that will affect the water balance. Combined with estimated population growth rates, increased water demand will cause severe water shortages to occur, especially in Java and Sumatra for the period of 2020-2030. This paper identifies several high risk regions throughout Indonesia based on the national level of climate risk study. It is found that areas which possess high risk on water shortage stretch in some parts of the Java-Bali region, especially in a few locations in the northern and southern of West Java, middle and southern of Central Java and East Java; as well as in the capital of the North Sumatra, West Sumatra, Bengkulu and Lampung (Sumatra), Nusa Tenggara Barat and South Sulawesi. This paper concludes with some possible actions to adapt to the impacts of climate change to water shortage.

Keywords: climate change impact, water supply, water shortage, adaptation strategy

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Vulnerability Assessment of Urban Infrastructure to Climate Change Impact: A Framework and Conceptual Model

Posted on December 27, 2009 by budhi| Leave a comment

Budhi Setiawan*, Norma Puspita**, Ambiyar Setiojati***

*Lecturer, Department of Civil Engineering, Sriwijaya University
**Student, Postgraduate of Infrastructure Management, Sriwijaya University
***Technical Assistant, Geotechnical Engineering Research Group, Department of Civil Engineering, Sriwijaya University

The majority of regions in Indonesia are considered to be vulnerable to potential impact of climate change, due to its geographical and socio-economic circumtance. In order to prioritize, design and implement intervention to adapt to climate change, it is essential to adopt a coherent set of approach, framework and method for examining vulnerability and adaptive capacity. To effectively formulate adaptation strategy at the region (kabupaten-kota) level, it is proposed to apply ”micro level-multi sectoral approach” which means assessing vulnerability at the micro-level but considering the multi sectoral impacts of climate change i.e. water and ocean sectoral. This study is present a framework and conceptual model to develop urban infrastructure vulnerability index.

Keywords: climate change, vulnerability, urban infrastructure, index

+) abstract submitted to Seminar Nasional Teknik Sipil VI 2010, 27 Januari 2010, ITS Surabaya

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Migrasi paksa …

Posted on December 7, 2009 by budhi| 1 Comment

Penduduk dunia mencapai 6,8 miliar, naik dua kali dari tahun 1960-an atau naik empat kali dibandingkan abad lalu. Kenaikan ini akibat kemajuan di bidang kesehatan yang menaikan tingkat harapan hidup dan tingkat kesuburan yang tidak mengalami penurunan yang berarti. Akibatnya banyak tempat yang semakin padat di satu sisi – khususnya di kawasan dan menjadi jarang bahkan kosong di sisi lainnya. Populasi terus bertambah diperkirakan 200 ribu jiwa per hari. Continue reading →

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CHARACTERIZATION OF ANNUAL MAXIMUM DAILY RAINFALL IN TIMIKA REGION, PAPUA

Posted on June 6, 2009 by budhi| Leave a comment

Budhi Setiawan1, Edy Sutriyono2, Didiek Subagio3 and Edi Riawan4

1Civil Engineering Department, Faculty of Engineering, Sriwijaya University

(Jl. Raya Prabumulih KM 32 Indralaya, Sumatera Selatan)

E-mail: budhi@wgtt.org

2Mining Engineering Department, Faculty of Engineering, Sriwijaya University

3FT Freeport Indonesia, Timika Papua

4Research Center for Climate Change – Bandung

Characterization of annual maximum daily rainfall is one important point that is to be used in Modified Ajkwa Deposition Area development planing e.g. embankment, river channel. It is expected that the result of this study can be used as an input to the formulation of homogeneous regions in the regional analysis. The hourly rainfall data from one rainfall station during one day which has annual maximum daily rainfall data is matched to other stations to get correlation coefficient. It is assumed that two stations have strong relationship when the coefficient of correlation has a value of more than 0.70. The data used in this study is taken from 19 stations around PT Freeport Indonesia with the total length of the recorded data is about 10 years. The temporal characteristic is also studied in the viewpoint of wet and dry season by using frequency analysis of occurring extreme rainfall.

Keywords : extreme rainfall, spatial, temporal, correlation coefficient, tendency

submitted to HATHI Annual Meeting, October 2009, Banjarmasin.

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VULNERABILITY OF SMALL ISLANDS TO CLIMATE CHANGE IN INDONESIA: A case study of Lombok Island, Province of Nusa Tenggara Barat

Posted on April 12, 2009 by budhi| 3 Comments

Djoko Suroso1, Tri Wahyu Hadi2, Ibnu Sofian3, Hamzah Latief4,

Oman Abdurahman5, Hendra Julianto6 and Budhi Setiawan7,

1Lecturer, Regional and Urban Planning Department, Bandung Institute of Technology, Bandung INDONESIA

2Lecturer, Meteorology Department, Bandung Institute of Technology, Bandung INDONESIA

3Researcher, National Agency for Surveying Mapping, Cibinong, Bogor, INDONESIA

4Lecturer, Oceanography Department, Bandung Institute of Technology, Bandung INDONESIA

5Researcher, Geological Agency, Ministry of Mining and Energy Resource, Bandung INDONESIA

6Researcher, Research Centre for Adaptation to Climate Change, Bandung INDONESIA

7Lecturer, Postgraduate Program of Civil Engineering and Environmental Science,

University of Sriwijaya, Palembang INDONESIA

E-mail: dsuroso@pl.itb.ac.id and suroso.djoko@gmail.com

Due to its geographical and socio-economic circumtance, the majority of regions in Indonesia are considered to be vulnerable to potential impact of climate change. Therefore, the option for adaptation measure at national and regional levels are rapidly emerging as central issues to debate arround policy responses to climate change. In order to prioritize, design and implement intervention to adapt to climate change, it is essential to adopt a coherent set of approach, framework and method for examining vulnerability and adaptive capacity.

Many vulnerability studies while effective in making awareness to the possible effect of climate change, have limited effectiveness in providing local scale guidance on adaptation. Methods and tools for supporting the process of building adaptive capacity at the provincial/local level are different from the one used for assessing impacts, vulnerability and adaptation on national and global scales.

To effectively formulate adaptation strategy at the province level, it is proposed to apply ”meso level-multi sectoral approach” which means assessing vulnerability at the meso-level but considering the multi sectoral impacts of climate change i.e. water and ocean sectoral. The regional approach in climate vulnerability studies is a useful approach because many practical adaptation strategies will be applied at a regional rather than sectoral scale and climate change impacts vary from region to region (DEH Australia, 2005)

The Lombok Island was selected as a case study area because it represents small islands which could experience harmfull impact from climate change. Lombok Island is part of Nusa Tenggara Barat Province which has already prepared Provincial Action Plan for Mitigation and Adaptation to Climate Change. It shows serious commitment of its provincial government in preparing its society to face impact of climate change.



Key Words : climate change, vulnerability, adaptation, small island.

presented at World Oceanic Conference 2009, 4-6 May, Menado – INDONESIA, Paper Number: 31

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Estimation of river-bed morphology using S-PLUS

Posted on April 11, 2009 by budhi| Leave a comment

Budhi Kuswan Susilo1, Budhi Setiawan2, Edy Sutriyono3

1PhD Candidate, Postgraduate of Environmental Science, Sriwijaya University

2Civil Engineering Department, Sriwijaya University (IAMG Members: 2645)

3Mining Engineering Department, Sriwijaya University

River-bed morphology is a product of sediment material that is transported by streams. The hydrology and morphology are interpreted to be control the form of river channel. This research is focussed of river-bed morphologic changes that influenced by tailing impoundment in Ajkwa lowland, Timika, Papua. The river transects data give variation in surface profiles of Modified Ajkwa Depositional Area (ModADA). Hence, maps based on shape of change in the river-bed morphology. The significant criteria of selected observation based on channel form in straight to get variation in bed forms per annual discharge. Rapid and frequent variation in Q tend to increase the magnitude of the alternating patterns of erosion and deposition that seem to be a necessary part of braiding mechanics. Combination of discharge and sediment load include tailing drops in highland refer the relationship of river-bed morphology and hydraulic efficiency can de made quantitatively. Computation and estimation of bed river morphology using S-PLUS for Windows, that is an object-oriented programming and visualization environment.

Keywords : river bed morphology, discharge, tailing impoundment.

accepted to present at IAMG Annual Conference, Stanford University California, 23-28 August 2009

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The Rainfall Influence to River-bed morphology

Posted on April 11, 2009 by budhi| Leave a comment

Budhi Kuswan Susilo1, Budhi Setiawan2, Edy Sutriyono3

1PhD Candidate, Postgraduate of Environmental Science, Sriwijaya University

2Civil Engineering Department, Sriwijaya University

3Mining Engineering Department, Sriwijaya University

The river flow and sediment material is controlling characterization of river-bed morphology. This research is focussed on development of river-bed morphology due to the variation of Q trend that is delivered by rainfall data. The river transects data give variation in surface profiles of channels in Modified Ajkwa Depositional Area (ModADA), Timika, Papua. The form of straight channel selected to be observation, contouring and made in cross section. This result is a respond to dynamic change in rapid and frequent variation in Q tend to increase the magnitude of sedimentation that seem to be a necessary part of braiding mechanics and can be made quantitatively.

Keywords : river bed morphology, discharge, river transect data, braiding mechanics

submitted to The 38th IAGI Annual Convention & Exhibition

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A preliminary study of bearing capacity map in Palembang Region

Posted on April 11, 2009 by budhi| 1 Comment

Budhi Setiawan1, Irma Sepriyana2, and Maulid M. Iqbal1

1Civil Engineering Department, Sriwijaya University Jl. Raya Palembang Prabumulih Km. 32 Ogan Ilir e-mail: budhi@wgtt.org

2Postgraduate student, Civil Engineering Department Sriwijaya University Jl. Padang selasa No. 32 Bukit Besar Palembang

Since on soft soil, large settlement might be occur under loaded foundation without actual shear failure occurring, the map of bearing capacity based soil investigation in soft soil area e.g. Palembang is become important. Among the different in situ tests, sondir is a simple, quick, and economical test that provides reliable in situ continuous soundings of subsurface soil. In Indonesia, sondir is considered the most frequently used method for characterization of geomedia. This research focused on site characterization of soil properties based on sondir data. This procedure is very important due to management data of soil field test is still conventional and unstructured.

Keywords: sondir, soft soil, soil characterization, bearing capacity

submitted to The 38th IAGI Annual Convention & Exhibition

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PIT IAGI 2009

Posted on March 15, 2009 by budhi| 4 Comments

Call for Papers from The 38th IAGI Annual Convention & Exhibition
The Convention will take place 13-14 October 2009 at Semarang, Central Java Province.
This event is hosted by Pengda IAGI Jateng.

This year, The 38th IAGI Annual Convention & Exhibition offers several program for its participants, including :

- Technical program
- Exhibition
- Professional Courses
- Technical field trips
- Panel Discussion
- Student Program
- Sport program
- Educational day
- And more…….

Call for papers now open!

The Program Committee is now accepting abstract proposals for full paper
Submit your abstract online
Deadline: 4 April 2009

This is your opportunity to contribute to the value of the IAGI and to advance your professional career as a published author.
Please distribute this information to your colleagues.
Enjoy Semarang………………

Continue reading →

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