scholarly journals REVIEW OF COASTAL CHARACTERISTICS OF IRON SAND DEPOSITS IN CILACAP CENTRAL JAVA

2016 ◽  
Vol 22 (1) ◽  
pp. 35
Author(s):  
Hananto Kurnio
Keyword(s):  
Key Words ◽  
Sea Level ◽  
Coastal Area ◽  
Depositional Environment ◽  
Sandy Beach ◽  
Beach Ridges ◽  
Central Java ◽  
Sediment Loads ◽  
Sand Deposit ◽  
High Sediment

Mineable iron sand deposits in Cilacap – southern coastal area of Central Java have certain coastal characteristics that need to be studied in order to understand its depositional environment. With the knowledge of such environment, it can be applied to look for other places prospective of iron sand deposits that have the same characteristics especially recently when Cilacap’s deposits were almost depleted. Coastal characteristics of iron sand deposit in Cilacap is shown by successive sandy beach ridges separated by marshy valleys typical of prograded coasts and by dunes of sand elongated parallel to the shore line with elevation varies from 0 m to 15 m above sea level. The iron sand deposit was derived from denudation of andesite and “Old Andesite Formation” enriched in magnetite and ilmenite minerals in the steep elevated and deeply weathered rock hinterlands of Cilacap. High sediment loads of Serayu Basin in the hinterland (3,500-4,500 ton/km2/year; Citarum River basin only 800-1,200 ton/km2/year) was causing extensive deposition of iron sand in the coastal zone. Key words: coast, characteristic, iron sand, Cilacap Endapan pasir besi yang dapat ditambang di Cilacap – pesisir selatan Jawa Tengah memiliki karakteristik pantai tertentu yang perlu dikaji agar dapat dipahami lingkungan pengendapannya. Dengan pengetahuan tentang lingkungan pengendapan tersebut, dapat diterapkan untuk mencari daerah-daerah lain prospek endapan pasir besi yang memiliki karakteristik yang sama terutama pada akhir-akhir ini ketika endapan Cilacap akan habis. Karakteristik pantai endapan pasir besi di Cilacap dicirikan oleh urutan pematang pantai berpasir yang dipisahkan oleh lembah-lembah berawa khas pantai maju dan oleh gumuk-gumuk pasir memanjang sejajar dengan garis pantai dengan ketinggian bervariasi dari 0 m hingga 15 m dari muka laut. Endapan pasir besi di daerah ini berasal dari proses denudasi andesit dan “Formasi Andesit Tua” yang kaya akan mineral magnetit dan ilmenit pada pedalaman Cilacap dengan kondisi elevasi curam dan batuan sangat terlapukkan. Muatan sedimen yang tinggi dari Cekungan Serayu di pedalaman tersebut (3.500-4.500 ton/km2/tahun; cekungan Sungai Citarum hanya 800-1.200 ton/km2/tahun) menyebabkan pengendapan yang sangat luas pasir besi di wilayah pantai. Kata kunci: pantai, karakteristik, pasir besi, Cilacap

IMPLEMENTATION OF SUSTAINABLE AQUACULTURE AS A MODEL OF SATO UMI TO IMPROVE PRODUCTIVITY WITHIN COASTAL AREA OF INDONESIA

2017 ◽  
Author(s):  
Suhendar I Sachoemar ◽  
Suhendar I Sachoemar ◽  
Tetsuo Yanagi ◽  
Tetsuo Yanagi ◽  
Mitsutaku Makino ◽  
...  
Keyword(s):  
Coastal Area ◽  
Sustainable Aquaculture ◽  
The South ◽  
West Java ◽  
The Public ◽  
Central Java ◽  
South Sulawesi ◽  
Similar Program ◽  
Technology Dissemination

The development of sustainable model of aquaculture by applying Sato Umi concept within coastal area of Indonesia has expanded from the center of first experiment in the northern coastal area of west Java to central Java (western Indonesia) and Bantaeng in the South Sulawesi of central Indonesia. The similar program has also been proposed for Maluku Province in the eastern part of Indonesia. In the next 5 years, Indonesia is developing the Techno Parks Program in some areas, in which aquaculture and fisheries activities development on the base of Sato Umi concept in the coastal area are involves in this program. The development of Techno Parks are directed as a center application of technology to stimulate the economy in the regency, and a place of training, apprenticeship, technology dissemination center, and center business advocacy for the public. Hopely, Sato Umi concept that has a similar spirit with Techno Park can be applied to support the implementation of Techno Park program in Indonesia

Salt marshes adjustment to anthropogenic pressures and sea-level rise

2021 ◽  
Author(s):  
A. Rita Carrasco ◽  
Katerina Kombiadou ◽  
Miguel Amado
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Salt Marshes ◽  
Anthropogenic Pressures ◽  
The Past ◽  
Ria Formosa ◽  
Sediment Loads ◽  
Human Interventions ◽  
South Portugal ◽  
And Sea Level

<p>It is predictable that salt marshes in regions, where sediment loads are high, should be stable against a broader range of relative sea level scenarios than those in sediment-poor systems. Despite extensive theoretical and laboratory studies, additional syntheses of marsh ‘persistence’ indicators under human interventions and accelerated sea-level rise rates are still needed. This study investigates the recent lateral changes occurring in lagoon-type marshes of the Ria Formosa lagoon (south Portugal) in the presence of human interventions and sea-level rise, to identify the major drivers for past marsh evolution and to estimate potential future trends. The conducted analysis assessed the past geomorphological adjustment based on imagery analysis and assessed its potential future adjustment to sea-level rise (~100 years) based on modelled land cover changes (by employing the SLAMM model within two sea-level rise scenarios).</p><p>Salt marshes in the Ria Formosa showed slow lateral growth rates over the last 70 years (<1 mm∙yr<sup>-1</sup>), with localized erosion along the main navigable channels associated with dredging activities. Higher change rates were noted near the inlets, with stronger progradation near the natural inlets of the system, fed by sediment influx pulses. Any potential influence of sea-level increase to an intensification of marsh-edge erosion in the past, could not be distinguished from human-induced pressures in the area. No significant sediment was exchanged between the salt marshes and tidal flats, and no self-organization pattern between them was observed in past. The related analysis showed that landcover changes in the salt marsh areas are likely to be more prominent in the future. The obtained results showed evidence of non-linearity in marsh response to high sea-level rise rates, which could indicate to the presence of critical thresholds and potential negative feedbacks within the system, with significant implications to marsh resilience.</p>

scholarly journals MONITORING OF MANGROVE GROWTH AND COASTAL CHANGES ON THE NORTH COAST OF BREBES, CENTRAL JAVA, USING LANDSAT DATA

2020 ◽  
Vol 16 (2) ◽  
pp. 197
Author(s):  
Tri Muji Susantoro ◽  
Ketut Wikantika ◽  
Lissa Fajri Yayusman ◽  
Alex Tan ◽  
M. Firman Ghozali
Keyword(s):  
Coastal Area ◽  
Vegetation Index ◽  
Series Data ◽  
North Coast ◽  
Landsat Data ◽  
Coastal Change ◽  
The North ◽  
Central Java ◽  
Normalised Difference Vegetation Index ◽  
Coastal Changes

Severe abrasion occurred in the coastal area of Brebes Regency, Central Java between 1985 and 1995. Since 1997, mangroves have been planted around the location as a measure intended to prevent further abrasion. Between 1996 and 2018, monitoring has been carried out to assess coastal change in the area and the growth and development of the mangroves. This study aims to monitor mangrove growth and its impact on coastal area changes on the north coast of Brebes, Central Java Province using Landsat series data, which has previously proven suitable for wetland studies including mangrove growth and change. Monitoring of mangrove growth was analysed using the normalised difference vegetation index (NDVI) and the green normalised difference vegetation index (GNDVI) of the Landsat data, while the coastal change was analysed based on the overlaying of shoreline maps. Visual field observations of WorldView 2 images were conducted to validate the NDVI and GNDVI results. It was identified from these data that the mangroves had developed well during the monitoring period. The NDVI results showed that the total mangrove area increased between 1996 and 2018 about 9.82 km2, while the GNDVI showed an increase of 3.20 km2. Analysis of coastal changes showed that the accretion area about 9.17 km2 from 1996 to 2018, while the abrasion being dominant to the west of the Pemali River delta about 4.81 km2. It is expected that the results of this study could be used by government and local communities in taking further preventative actions and for sustainable development planning for coastal areas.

scholarly journals Sea-level prediction for early warning information of coastal inundation in Belawan coastal area using Delft3D model

2021 ◽  
Vol 893 (1) ◽  
pp. 012034
Author(s):  
A M N Jaya ◽  
F P Sari ◽  
I J A Saragih ◽  
I Dafitra
Keyword(s):  
Water Level ◽  
Sea Level ◽  
Early Warning ◽  
Hydrodynamic Model ◽  
Coastal Area ◽  
East Coast ◽  
Coefficient Of Determination ◽  
Wind Effect ◽  
Coastal Inundation ◽  
Better Than

Abstract Coastal inundation has a great impact on the environment, such as damage to infrastructure and pollution of land and water. One of the efforts to prevent coastal inundation is to predict the water level. Delft3D is a hydrodynamic model that's able to simulate the water level. Coastal inundation research using the Delft3D model is still rarely done in Indonesia, especially on the east coast of Sumatra. This research is conducted in Belawan coastal area by simulating the water level that caused the coastal inundation using the Delft3D model. The best bathymetry for the prediction of water level and the magnitude of the wind effect was obtained from the simulation. The final step is to predict the water level in Belawan coastal area. The result of this research shows that the Delft3D model can simulate the water level which causes the coastal inundation in the Belawan coastal area. The correlation of the Delft3D model is 0.9, and the RMSE of GEBCO bathymetry is 0.39 meters and the RMSE of NOAA bathymetry is 0.46 meters. The GEBCO bathymetry is better than NOAA bathymetry in describing the water level in the Belawan coastal area. The wind effect on the water level simulations is not significant because the coefficient of determination is 0.47%. Besides, the Delft3D model with GEBCO bathymetry input can predict the water level which causes the coastal inundation with correlation reaches 0.92 and RMSE is 0.39 meters.

scholarly journals Optimalisasi Produk Batik Perajin Batik Plengkung Dusun Dalangan Desa Campursari Kabupaten Temanggung Jawa Tengah

Abdi Seni ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 110-119
Author(s):  
Sri Wuryani
Keyword(s):  
Natural Resources ◽  
Sea Level ◽  
Free Time ◽  
Paddy Fields ◽  
Synthetic Dyes ◽  
Central Java ◽  
Economic Support ◽  
Central Java Province

AbstrakDesa Campursari salah satu desa di Kecamatan Bulu, Temanggung  Kabupaten Temanggung, Provinsi Jawa Tengah. Secara geografis, Desa Campursari terletak di kaki gunung Sumbing pada ketinggian 1.040 m dpl, berjarak 1 km dari ibukota Kecamatan Bulu dan 9 km dari Ibukota Kabupaten. Desa Campursari terbagi atas lahan sawah dan bukan sawah.Lahan sawah dipergunakan ladang/tegalan/huma, perkebunan rakyat dan lain-lain.Letak desa sedemikian memberikan sumber daya alam yang berlimpah.Hasil perkebunan merupakan  penunjang  ekonomi  warga,  diantaranya  perkebunan  tembakau  yang  menjadi primadona.Kesibukan warga pada masa panen tembakau, antara bulan Juli, Agustus dan September.Diluar bulan-bulan tersebut banyak waktu luang, terutama bagi ibu-ibu. Mengisi waktu luang inilah mereka ingin mengisi dengan  menambah pengetahuan tentang batik yang selama ini sudah dirintis di dusun Dalangan Desa Campursari,  Kegiatan tersebut diwadahi dalam kelompok yang diberi nama Batik Plengkung. Permasalahan kelompok batik plengkung kualitas  kain batik yang kurang baik warna tidak rata dan proses pewarnaan yang kurang praktis. Tujuan pelatihan menambah ketrampilan dan wawasan tentang batik, memberikan motivasi untuk lebih mencintai batik kepada warga desa Campursari, terutama peserta pelatihan. Hasil pelatihan diharapkan dapat meningkatkan jumlah produksi dan kualitasnya, memunculkan perajin-peraji baru sebagai pencipta lapangan pekerjaan, dan  kesejahteraan warga meningkat. Metode yang digunakan dalam kegiatan ini adalah pelatihan dan pendampingan tentang teknik mewarna dengan bahan warna sintetis. Hasil pelatihan, peserta akanbertambah pengetahuannya tentang jenis bahan pewarna sintetis dan teknik penggunaannya, karya hasil pelatihan.Kata kunci: pelatihan, batik plengkung, warna sintetis. AbstractCampursari  is  one  of  the  villages  in  Bulu  District,  Temanggung,  Central  Java  Province. Geographically, Campursari Village is located at the foot of Mountain Sumbing at an altitude of 1,040 m above sea level, located 1 km from the capital of Bulu District and 9 km from the Capital District. Campursari village is composed  into paddy fields and not paddy fields. Paddy fields are used as fields / dry fields / huma, community plantations and others. The location of such villages provides abundant natural resources. The results of plantations are economic support for residents, including  tobacco  plantations  that  are  excellent.  Residents  are  busy  at  the  time  of  the  tobacco harvest,  between  July, August  and  September.  Outside these  months  there  is  plenty of  free  time, especially for mothers. This free time they want to fill by adding knowledge about batik that had been pioneered in the Dalangan hamlet in Campursari village, the activity was accommodated in a group named Batik Plengkung. The problem with the Plengkung batik group is that the quality of batik cloth is not good, the colors are uneven and the coloring process is not practical. The aim of the training is to add skills and insights about batik, to provide motivation to love batik more to Campursari villagers, especially the trainees. The results of the training are expected to increase the amount of production and quality, bring new craftsmen as job creators, and improve the welfare of citizens. The method used in this activity is training and mentoring on coloring techniques with synthetic  color materials.  The  results  of the  training,  participants  will increase  their  knowledge about the types of synthetic dyes and their use techniques, the results of the training.Keywords: training, batik Plengkung, synthetic colors.

PERTUMBUHAN DAN PRODUKSI TANAMAN KACANG TANAH (Arachis hipogea) DAN SENGON (Paraserianthes falcataria) DI ANTARA TANAMAN KELAPA DI SUKABUMI JAWA BARAT

2020 ◽  
Vol 8 (4) ◽  
pp. 126
Author(s):  
HANDI SUPRIADI ◽  
H. T. LUNTUNGAN
Keyword(s):  
Key Words ◽  
Sea Level ◽  
Plant Height ◽  
Soil Type ◽  
Cocos Nucifera ◽  
Cropping System ◽  
Paraserianthes Falcataria ◽  
Number Of Leaves ◽  
Peanut Production ◽  
Female Flowers

<p>Penelitian dilaksanakan pada bulan Januari sampai dengan Desember 2001 di Desa Caringinnunggal, Kecamatan Waluran, Kabupaten Sukabumi, yang bcrada pada kelinggian 250 m di atas permukaan laut, tipe iklim B2 (Oldeman) dan jenis tanahnya Podsolik Merah Kuning. Rancangan yang digunakan dalam penelitian ini adalah rancangan acak kelompok dengan empat ulangan. Perlakuan model polatanam kelapa yang diuji sebagai berikut (1) kelapa + sengon 140 pohon/ha ♦ kacang tanah, (2) kelapa + sengon 280 pohon/ha + kacang tanah, (3) kelapa + sengon 420 pohon/ha ♦ kacang tanah, (4) kelapa + sengon 560 pohon/ha + kacang tanah, (5) kelapa + sengon 700 pohon/ha + kacang tanah dan (6) kelapa monokultur. 'Tujuan dai penelitian ini untuk mcngciahui pertumbuhan dan produksi dari beberapa model polatanam kelapa dengan tanaman sela kacang tanah dan sengon. Pengamatan dilakukan terhadap parameter agronomi meliputi data petumbuhan kacang tanah, sengon dan kelapa seta data produksi kacang tanah. Data yang diperoleh dianalisis dengan menggunakan sidik ragam dan dilanjutkan dengan uji BNJ. Hasil penelitian menunjukkan produktivitas kacang tanah pada polatanam kelapa * sengon 700 pohon/ha + kacang tanah prospektif dengan hasil mencapai 2 183 kg/ha dengan tinggi tanaman 30.25 cm dan polong isi sebanyak 9.65 buah. Sedang untuk tanaman sengon tingginya telah mencapai 312.3 cm dengan diameter 10.57 cm. Adanya tanaman sela diantara kelapa tidak menurunkan pembentukan jumlah daun, jumlah bunga betina dan jumlah tandan tanaman kelapa.</p><p>Kata kunci: Cocos nucifera, Paraserianthes falcataria, Arachis hipogea, polatanam</p><p> </p><p><strong>ABSTRACT</strong></p><p><strong>Growth and producion of peanut and albizia between coconut palms in Sukabumi, West Java</strong></p><p>The study was conducted from January to December 2001 at Caringinnunggal, Sukabumi 250 m above sea level with type of climate Bj according to Oldeman and soil type Red Yellow Podsolic. The expeiment was designed as a randomized block in 4 replicates. The cropping system models consisted of : (1) Coconut + albizia 140 trees/ha ♦ peanut (2) Coconut + albizia 280 trees/ha ♦ peanut. (3) Coconut + albizia 420 trees/ha + peanut, (4) Coconut + albizia 560 trees/ha + peanut, (5) Coconut + albizia 700 trees/ha + peanut and (6) Coconut as a control The purpose of this experiment was to know the growth and productivity of several fanning systems with intercrops in between coconut. The results of the research showed that the peanut production in the cropping system of coconut + albizia 700 trees/ha + peanut reached 2 183 kg/ha, peanut plant height 30.25 cm, mature pods 9.65/plant. While Ihe height of albizia plant reached 3)2.3 cm, stem diameter 10.57 cm. The intercrops planted in between the coconut palms did not reduce the number of leaves, the number of female flowers, and (he number of bunches.</p><p>Key words : Cocos nucifera, Paraserianthes falcataria. Arachis hipogea, cropping system, production</p>

scholarly journals Suspended sediment projections in Apalachicola Bay in response to altered river flow and sediment loads under climate change and sea level rise

2016 ◽  
Vol 4 (10) ◽  
pp. 428-439 ◽  
Author(s):  
Wenrui Huang ◽  
Scott C. Hagen ◽  
Dingbao Wang ◽  
Paige A. Hovenga ◽  
Fei Teng ◽  
...  
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Suspended Sediment ◽  
Sea Level ◽  
River Flow ◽  
Apalachicola Bay ◽  
Sediment Loads ◽  
And Sea Level
Sign in / Sign up

Export Citation Format

Share Document