Adaptation and mitigation of land subsidence in Semarang

Geodetic measurements (e.g. Spirit Leveling, GNSS and InSAR) have clearly measured the land subsidence in many parts along northern coast of Java Island Indonesia. The impacts from the subsidence (e.g. problems on infrastructures, wider expansion of flooding, tidal inundation, etc.) are significantly appeared in certain places and already concluded as ecological disaster. Since mostly the land subsidence are located in cities lying on sediment area like Jakarta, Pekalongan, Semarang, Demak, and Surabaya where consumption of groundwater is very huge, in this case the typical of subsidence might be categorize as anthropogenic land subsidence. Nevertheless in order to make sure this typical, in this case the investigation on the others factors like the tectonic influence is necessary (e.g. as key for appropriate of adaptation or mitigation from disaster).This paper will highlight the investigation by using GNSS dataset in order to see the tectonic influence to the anthropogenic subsidence along northern coast of Java Island. Our preliminary result shows relatively lack of tectonic influence to the anthropogenic subsidence around the investigated area.

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“…al [18], Andreas et. al [19][20]. It also badly influences the quality and amenity of the living environment and life (e.g.…”

Section: Introductionmentioning

confidence: 99%

Investigating the tectonic influence to the anthropogenic subsidence along northern coast of Java Island Indonesia using GNSS data sets

et al. 2019

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“…We divided the result into several sub chapter each explain about insight look of inundated infrastructures, cracks on building and houses, insight look on the bridges and drainage, on the roads, on dykes, and insight look on the others affected infrastructures. These all results can become important keys for adaptation and mitigation [8] …”

Section: Methodsmentioning

confidence: 99%

Insight look the subsidence impact to infrastructures in Jakarta and Semarang area; Key for adaptation and mitigation

et al. 2018

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Abstract. Land subsidence is not a new phenomenon for Jakarta and Semarang areas. According to some publications, the value of Jakarta's subsidence may reach 2-4 meter in certain place. Meanwhile, more than 2 meter of subsidence is taking place in northern part of Semarang. Some techniques are being used to derive land subsidence information in these areas such as repeated leveling measurements, GPS surveys, and InSAR measurements. The impact of land subsidence in Jakarta and Semarang could be seen in several ways, such as sea inundation ("Rob" in Javanese), problem on infrastructures, the wider expansion of flooding areas, etc. Cracking on housing, street, "sinking" on the bridges and dyke, problems on drainage are examples of infrastructures problems due to the land subsidence. Huge costs have already been spent to fixing those infrastructures problems both in Jakarta and Semarang. Since mostly liniear pattern of land subsidence are recognized in both area today and probably in the next years to come, in this case the impact especially on infrastructures are probably will getting worse. Insight look the subsidence impact to the infrastuctures in Jakarta and Semarang area would raisen the concern, and become key for adaptation and mitigation.

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“…Permasalahan kawasan pesisir karena rob dan penurunan tanah juga dialami oleh Kota Semarang bagian utara. Berdasarkan jenis tanahnya, Kota Semarang bagian utara, tersusun dari tanah aluvial yang masih sangat muda dengan kompresibilitas yang sangat tinggi (Andreas, Abidin, Gumilar, Sidiq, & Yuwono, 2017). Ini didukung pula dari hasil studi Marfai, Almohammad, Dey, Susanto, dan King (2008), yang menyebutkan bahwa selama tahun 1908 hingga 1937, garis pantai Kota Semarang berkembang relatif cepat menuju ke laut sekitar 0.5 km sampai 1 km atau rata rata maju sekitar 16 meter/tahun.…”

Section: Pendahuluanunclassified

“…Salah satu Kawasan Kota Semarang yang mengalami permasalahan rob dan penurunan tanah adalah Kawasan Tambaklorok (lihat Gambar 1) (Setioko, Pandelaki, & Murtini, 2013). Laju penurunan tanahnya adalah sebesar > 8 cm/tahun (Departemen Energi dan Sumber Daya Mineral, 2001) dan diperkirakan akan semakin tinggi setiap tahunnya (Andreas, 2016). Pendapat tersebut di dukung dengan hasil penelitian penurunan tanah oleh Kelompok Keilmuan Geodesi Fakultas Ilmu dan Teknologi Kebumian ITB tahun 2008, 2009, 2010, 2011, 2012, dan 2016, yang menunjukkan bahwa penurunan tanah di Kota Semarang bagian utara dan bagian utara-timur semakin tinggi setiap tahunnya (Andreas, 2016).…”

Section: Pendahuluanunclassified

Pelibatan Masyarakat Dalam Penataan Permukiman Kampung Nelayan

Kristina

Tyas

2018

JPK

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Kawasan Tambaklorok merupakan permukiman nelayan di Kota Semarang, yang rentan terhadap rob dan penurunan tanah. Laju penurunan tanah saat ini mencapai > 8 cm/tahun dan akan semakin parah. Sebagai satu-satunya permukiman nelayan dan masuk dalam deliniasi kawasan kumuh, pemerintah merencanakan program pembangunan berkonsep kampung nelayan. Program ini diharapkan mampu mengurangi permasalahan lingkungan serta meningkatkan perekonomian. Sebagai program yang direncanakan di kawasan yang sudah terbangun, penelitian ini bertujuan untuk mengetahui pelibatan masyarakat dalam proses perencanaan serta preferensi masyarakat terhadap program kampung nelayan. Metode yang digunakan adalah explanatory sequential mixed methods. Hasil penelitian menunjukkan bahwa sebagian besar responden tidak terlibat dalam proses perencanaan. Masyarakat tidak memiliki wadah untuk menyampaikan aspirasinya. Sebagian masyarakat nelayan memiliki preferensi yang berbeda dengan desain yang ditawarkan. Warga lebih memilih penataan kawasan dengan desain yang sederhana. Rekomendasi terkait dengan penelitian ini adalah perlunya bentuk-bentuk pelibatan masyarakat yang lebih banyak melibatkan masyarakat, di antaranya sosialisasi yang lebih intensif. Sudah ada sosialisasi namun perlu lebih ditingkatkan.

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Adaptation and mitigation of land subsidence in Semarang

Cited by 16 publications

References 3 publications

Investigating the tectonic influence to the anthropogenic subsidence along northern coast of Java Island Indonesia using GNSS data sets

Investigating the tectonic influence to the anthropogenic subsidence along northern coast of Java Island Indonesia using GNSS data sets

Insight look the subsidence impact to infrastructures in Jakarta and Semarang area; Key for adaptation and mitigation

Pelibatan Masyarakat Dalam Penataan Permukiman Kampung Nelayan

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