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All Journal Maspari Journal JOURNAL OF COASTAL DEVELOPMENT Jurnal Pembangunan Wilayah dan Kota METANA BERKALA FISIKA Jurnal Ilmu Lingkungan YOUNGSTER PHYSICS JOURNAL Sains Tanah Maspari Journal INDONESIAN JOURNAL OF APPLIED PHYSICS Akuatik: Jurnal Sumberdaya Perairan
Dwi Purwantoro Sasongko
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Semarang
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics

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Menentukan Tipe Pasang Surut dan Muka Air Rencana Perairan Laut Kabupaten Bengkulu Tengah Menggunakan Metode Admiralty Fadilah .; Suripin .; Dwi P Sasongko
Maspari Journal : Marine Science Research Vol 6, No 1 (2014): Edisi Januari
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (467.025 KB) | DOI: 10.36706/maspari.v6i1.1703

Abstract

Pengelolaan  wilayah  pantai  sangat  penting  untuk  mempertahankan  fungsinya  sebagai pelindung  (barrier)  antara  lautan  dan  daratan,  karena  wilayah  ini  berperan  khusus  dalam bidang  pelabuhan,  navigasi,  rekreasi,  dan  sebagainya.  Pasang  surut  merupakan  faktor  utama yang  mempengaruhi  keberadaan  peran-peran  wilayah  pantai  tersebut  sehingga  perlu diperhitungkan dengan baik sebelum melakukan kegiatan di wilayah pantai. Setiap wilayah memiliki kondisi pasang surut yang berbeda-beda. Studi perhitungan dan penentuan  kondisi  pasang  surut  telah  banyak  dilakukan  baik  secara  konvensional  maupun menggunakan  metode  admiralty.  Penelitian  ini  bertujuan  menentukan  komponen  dan  tipe pasang  surut  di  Kabupaten  Bengkulu  Tengah  Provinsi  Bengkulu  menggunakan  metode admiralty.  Hasil  yang  diperoleh  bahwa  perairan  di  Kabupaten  Bengkulu  Tengah  Provinsi Bengkulu  memiliki  pasang  surut  Tipe  Campuran  Condong  Ganda  (Mix  Tide  Prevailing Semidiurnal) dengan tinggi rata-rata muka air laut berkisar 70cm.
DISTRIBUTION OF NATURAL RADIONUCLIDES 40K AND 208Tl IN SURFICIAL SEDIMENTS OF SEMARANG WATERS Dwi P. Sasongko
JOURNAL OF COASTAL DEVELOPMENT Vol 2, No 1 (1998): Volume 2, Number 1, Year 1998
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Distribution of natural radionuclides in surficial sediments of Semarang waters has been carried out by applying the gamma spectrometry analysis. Using the gamma spectrometry technique was employed to analyze the radiation exposure. Six natural radionuclides (K, TI, Pb, Pb, Ac and Ra) can be identified in sediments, along with two natural radionuclides (K and TI) in water. Distribution factor can be estimated from the ratio of these radionuclides in surficial sediment and the water. Result shows that the distribution factor for radionuclide K is 24.5097 – 33.5206 and for TI is 13.4383 – 42.1509.
DISPERSION MODELING OF NATURAL RADIONUCLIDES 238U, 232TH, 226RA, 40K IN MURIA COASTAL WATERS Dwi Purwantoro Sasongko; S upriharyono; Wahyu Setiabudi
JOURNAL OF COASTAL DEVELOPMENT Vol 15, No 2 (2012): Volume 15, Number 2, Year 2012
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Dispersion modeling of natural radionuclides 238U, 232Th, 226Ra, 40K in Muria coastal waters has been carried out in sea water and sediment surounding Tanjungjati B coal-fire power plant and nuclear power plant site’s candidate by applying the hydrodynamics model of unsteady 2-dimensional flexible grid. Oceanography data collecting of bathimetry, current, wave, tide and wind had been carried out on May 28, 2006 until June 2006. Updating data was conducted on April 27 up to April 29, 2011 by using Acoustic Doppler Current Meter Profiler (ADCP) to measure the wave and subsurface current with duration of 2x24 hours. Sea water and sediment samples were collected on April 22, 2011 in six locations (surounding Tanjungjati CPP) and on April 23, 2011 in 10 locations (surounding NPP site’s candidate). Samples were analyzed at Research Center for Safety Technology and Radiation Metrology Laboratory, National Nuclear Energy Agency, Jakarta on May 2011 until September 2011 by using spectrometri-γ analysis. Result shows that it can be identified and measured the natural radionuclides of 238U, 232Th, 226Ra, 40K in sea water and sediment. The study can be justified that natural radionuclides of 238U, 232Th, 226Ra, 40K was leachated from fly ash and bottom ash of coal burned Tanjungjati CPP to sea water. The hiyrodynamics model of unsteady 2-dimensional fexible grid by using CD Oceanography software for current plotting, ArcView GIS 3.3 software for bathimetric contouring and SMS 8.1 software for modeling of natural radionuclides dispersion in coastal waters one can applied for radionuclides dispersion of 238U, 232Th, 226Ra, 40K in Muria coastal waters.
Analisis hamburan kuantum menggunakan diagram Feynman untuk kasus teori ϕ3 Septian Adhi Nugroho; Asep Yoyo Wardaya; Dwi P. Sasongko
Youngster Physics Journal Vol 6, No 1 (2017): Youngster Physics Journal Januari 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Scattering is the most important key in particle physics. Quantum field theory/ QFT discusses much about scattering of the particles which are reviewed in any dimensions and depend on the lagrangian forms. In this ϕ theory research, lagrangian concept along with the Green function become its based on the calculation of the generating function of Z[J]. The function is a generator when we analyze the forms of Feynman diagram. In the process of the calculation, we will have an infinite series. That function is used to determine the drawing of Feynman diagrams consist of the vertices and propagators. So that the form of diagram may be able to be analyzed. In this research, there will obtain an infinite series which has to be cut to second order for simplicity case. In the first order, we will obtain 2 types of diagram and in the second one we have 8 types of diagram. There are 10 types of the diagram in total which consist of 7 types of connected diagram and 3 types of disconnected diagram.Keywords: scattering, QFT, lagrangian, Green function Feynman diagram, vertice, propagator, infinite series
Pemodelan inversi gayaberat dengan panduan Euler deconvolution untuk struktur bawah permukaan di Lapangan Panas Bumi ”B24” Brandan Tito Ramadhan; Agus Setyawan; Dwi P. Sasongko; Imam Baru Raharjo; R. M. Tofan Sastranegara
Youngster Physics Journal Vol 6, No 2 (2017): Youngster Physics Journal April 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Gravity data inversion requires a good initial mesh model to generate a good subsurface model. Ambiguities in gravity data can be reduced by Euler deconvolution’s point cluster result that show its position and depth. These point cluster can give an additional information to shape the initial mesh model for inversion. The purpose of the study was to determine the influence of Euler deconvolution to the inversion. Inversion was done by the steepest descent algorithm. Euler deconvolution method and inversion algorithm were tested on synthetic models and showed good results that Euler deconvolution able to construct actual density distribution. These methods were applied to the gravity data on the "B24” geothermal field. Residual anomaly map has a value of -12 to 24 mGal. The geothermal field is estimated that it has a major fault which mainly striking in northwest-southeast direction. These estimates are supported by the results of Euler deconvolution which indicate the presence of fault and graben structure. Euler deconvolution and inversion method were applied perpendicularly to the main structure at the southwest-northeast direction. The results of this study are the Euler deconvolution method is able to provide information for a mesh geometry for inversion. From the inversion result, “B24” geothermal field is estimated has a high-low-high density distribution dominated by andesite and tuff. To improve the results of the research, it needs a measurement point addition, additional modeling area, geological and geochemical data to strengthen the interpretation.Keywords: density, Euler deconvolution, gravity inversion, geothermal
Distribusi radionuklida alam dalam sampel lingkungan tanah, air dan tanaman sekitar PLTU Rembang Aditya Yoga Syah Putra; Dwi P. Sasongko; Zaenal Arifin; Sukirno Sukirno
Youngster Physics Journal Vol 6, No 4 (2017): Youngster Physics Journal Oktober 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Research of the natural radionuclide distribution of soil, water and plant samples around Rembang Coal Fired Power Plant (CFPP) has been done with the purpose of the study is to know the activity concentration of natural radionuclide, the pattern of distribution of environtment radioactivity around Rembang CFPP with soil, water and plant samples and compare the activity concentration of natural radionuclide around Rembang CFPP with Environmental Radioactivity Limit Values (ERLV) which is listed on the Perka Bapeten No 16 of 2013 about Safety Radiation in Storage of Technologically Enhanched Naturally Occuring Radioactivity Material. Sample analysis method using gamma spectrometry with HPGe detector and Maestro 2 software is based on SNI 1070.3-2009. The calculated concentration of natural radionuclide activity 226Ra, 228Ra, 232Th dan 40K in soil sample is (8.17×10-3 ± 2.33×10-4; 9.99×10-3 ± 1.69×10-4; 7.84×10-3 ± 2.78×10-4; 4.46×10-2 ± 6.78×10-4) Bq/g. Water sample (3.07×10-3 ± 4.05×10-4; 3.59×10-3 ± 3.22×10-4; 6.59×10-4 ± 5.59×10-5; 2.82×10-2 ± 1.93×10-3) Bq/L. Plant sample (1.69×10-3 ± 9.06×10-5; 7.56×10-4 ± 5.04×10-5; 4.13×10-4 ± 3.03×10-5; 1.17×10-2 ± 7.52×10-4) Bq/g. The distribution pattern of the concentration of natural radionuclide activity that is formed that is in the soil sample has the distribution pattern of the distance from CFPP Rembang the bigger concentration activity. Furthermore, in water and plant samples the distribution pattern tends to lead to a location close to the CFPP that has a bigger concentration of activity. Comparison the concentration of natural radionuclide activity with Environmental Radioactivity Limit Values (ERLV) it was found that the overall concentration of natural radionuclide activity in soil, water or plant samples at each sampling site still did not exceed the Environmental Boundary Limit Radioactivity (ERLV) that defined by Perka Bapeten No 16 of 2013 about Safety Radiation in Storage of Technologically Enhanched Naturally Occuring Radioactivity Material.Keywords: Natural radionuclide, environment sample, Rembang CFPP, gamma spectrometry, radioactivity, distribution.
Vibration Vulnerability Identification in Kota Lama Semarang using Microtremor Method Dwi Purwantoro Sasongko; Gatot Yuliyanto; Zaenal Arifin
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 9, No 02 (2019): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1191.536 KB) | DOI: 10.13057/ijap.v9i02.34592

Abstract

Kota Lama is one of the landmarks in Semarang Central Java that is located on young alluvial sediment. This area is prone to vibrations stemming from tectonic activities around Semarang. Therefore, measurements were carried out to identify this vibration vulnerability using the microtremor method. These were aimed at obtaining a spatial distribution of vibration vulnerability. There were 29 measurement points each separated by a sampling interval of 50 ms and a duration of 10 minutes.  Ground vibration amplification in this area was found to range from 0.74 to 4.9 with the highest being on the outskirts of Kota Lama. The predominant frequency was found to range from 0.02 to 1.1 Hz. These patterns of high predominant frequency and ground vibration amplification suggest that the central area of Kota Lama needs more attention. High ground shear strain that ranges from 0.02 to 0.86 means that possible event to occur in Kota Lama include landslide, soil compaction, and liquefaction, as is also evident with existing dynamic properties of repeated collapse effect and loading speed effect. Meanwhile, structure of vibration amplification against predominant frequency underneath Kota Lama revealed lateral subsurface discontinuity on its southwest side. It was also found that the contour of ground vibration amplification resembles the shape of Vifjhoek fort.
Pengaruh Kegiatan Penambangan Timah terhadap Kualitas Air Laut di Wilayah Pesisir Kabupaten Bangka Provinsi Kepulauan Bangka Belitung Kurniawan Kurniawan; Supriharyono Supriharyono; Dwi P. Sasongko
Akuatik: Jurnal Sumberdaya Perairan Vol 8 No 1 (2014): AKUATIK : Jurnal Sumberdaya Perairan
Publisher : Department of Aquatic Resources Management, Faculty of Agriculture, Fisheries, and Biology, University of Bangka Belitung

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Abstract

Tin mining activities in Bangka regency coastal areas are directly or indirectly give pressure significantly to the degradation of aquatic ecosystems including coral reef ecosystems that affect spawning, feeding, fishing ground of fish resources and other marine biota. The purpose of this study is to examine the content of heavy metals Pb, Cd, Cr in wastewater from tin mining activities in the coastal waters of Bangka Regency, to examine the content of heavy metals Pb, Cd, Cr of the sea waters which is tin mining activities occurred in the coastal area of Bangka Regency and to examine the content of heavy metals Pb, Cd, Cr in the sediments which is tin mining activities occurred in the coastal area of Bangka Regency. Methods of research conducted by direct observation in the field, data collection and laboratory testing. Data taken in the form of water quality parameters, residual waste leaching, sea water and sediment which caught in active tin mining areas. The content of heavy metals test results compared to heavy metal environmental quality standards for marine biota water based Kep 51/MENLH/2004 and the sediment by IADC / CEDA. The measurement results of water quality parameters are as follows: TSS value was on environmental quality standards (20 mg/l). There are 109 mg/l, 208 mg/l, 65 mg/l, 75 mg/l, 120 mg/l, 188 mg/l and 63 mg/l; Brightness was on environmental quality standards (SNI 05-2413-1991 less than 5 m) ranged from 0.05 to 0.08 m; Temperature 28-320C standard is still appropriate; salinity standards are ranging from 27 to 29 o/oo; Density Oxygen (DO) 7 to 9.8 ppm standard is 5 ppm (SNI 06-6989. 14-2004); The Degree of Acidity (pH) 6 to 7 pH is still qualify. The content of heavy metals (Pb, Cd, Cr) in wastewater from tin mining activities was on environmental quality standards that has become environmental pollutants. The content of heavy metals (Pb, Cd, Cr) in the seawater which is tin mining activities occurred in the coastal area of Bangka Regency have been on the environmental quality standards that has been categorized as polluted seawater. The content of heavy metals (Pb, Cd, Cr) in the sediment remained below the environmental quality standards of heavy metal content in the sediment
Co-Authors Aditya Yoga Syah Putra Agus Setyawan Asep Yoyo Wardaya Brandan Tito Ramadhan Budi Hendrarto Burhanudin Adman Fadilah . Fadilah . FX Adji Samekto Gatot Yulianto HARIADI SISWANTORO Hasti Wahyuni Ilmy Zaada Faidullah Imam Baru Raharjo Kurniawan Kurniawan M Munir P Purwanto Prathika Andini Goesty Priyono Priyono R. M. Tofan Sastranegara S upriharyono S. Suripin Septian Adhi Nugroho Setia Budi Sasongko Sukirno Sukirno Supriharyono Supriharyono Sutrisno Anggoro Tri Mulyaningsih Wahyu Setiabudi Zaenal Arifin