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ACOUSTIC DETECTION AND CHARACTERIZATION OF MARINE SEDIMENT WITH SHALLOW SEISMIC TECHNOLOGY IN RAMBAT WATERS, BANGKA BELITUNG Haqqu Ramdhani; Henry M. Manik; Susilohadi Susilohadi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (749.444 KB) | DOI: 10.29244/jitkt.v5i2.7572

Abstract

High resolution of marine seismic reflection seismic were used to detect the layers of seafloor sediment and to interpret the seismic data geologically. The objectives of this study weres to detect and to characterize the seafloor sediment in the Rambat area, West Bangka, Bangka Belitung. Acquisition data was held on 10-24  August  2012 located between 105.1°00'00" - 105.5°00'00 " N and 1.7°00'00"-1.9° 00'00" W. Several methods used to process the data were geometry processing, band pass filter, predictive deconvolution,  and Autocoralation Gain Control (AGC)  in order to reduce the multiple noise and to  ease the data interpretation. Seismic cross section found in Cross Rambat (CRMBT) line 11 exhibited  sedimentation process of the sea floor which rocky substrates. The process was assumed to be occurred due to legal and illegal mining activities for long period of time. Keywords: seismic, acoustic, sediment, band pass filter, deconvolution, noise
ACOUSTIC DETECTION AND CHARACTERIZATION OF MARINE SEDIMENT WITH SHALLOW SEISMIC TECHNOLOGY IN RAMBAT WATERS, BANGKA BELITUNG Haqqu Ramdhani; Henry M. Manik; Susilohadi Susilohadi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 5 No. 2 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (749.444 KB) | DOI: 10.29244/jitkt.v5i2.7572

Abstract

High resolution of marine seismic reflection seismic were used to detect the layers of seafloor sediment and to interpret the seismic data geologically. The objectives of this study weres to detect and to characterize the seafloor sediment in the Rambat area, West Bangka, Bangka Belitung. Acquisition data was held on 10-24  August  2012 located between 105.1°00'00" - 105.5°00'00 " N and 1.7°00'00"-1.9° 00'00" W. Several methods used to process the data were geometry processing, band pass filter, predictive deconvolution,  and Autocoralation Gain Control (AGC)  in order to reduce the multiple noise and to  ease the data interpretation. Seismic cross section found in Cross Rambat (CRMBT) line 11 exhibited  sedimentation process of the sea floor which rocky substrates. The process was assumed to be occurred due to legal and illegal mining activities for long period of time. Keywords: seismic, acoustic, sediment, band pass filter, deconvolution, noise
Deteksi dan Kuantifikasi Internal Wave Menggunakan Instrumen Broadband Echosounder SIMRAD EK80 di Perairan Padang Bay Bali Edriyan Situmorang; Henry Munandar Manik; Agus Saleh Atmadipoera
POSITRON Vol 12, No 2 (2022): Vol. 12 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (750.216 KB) | DOI: 10.26418/positron.v12i2.51854

Abstract

Internal wave adalah gelombang laut yang terjadi di lapisan dalam di perairan laut dangkal dan dalam, di mana kemunculannya hanya dapat terjadi jika kolom air terstratifikasi akibat adanya perbedaan densitas massa air. Penelitian ini bertujuan untuk mendeteksi peristiwa internal wave, serta mengukur nilai hambur balik akustik dari internal wave yang terjadi di Selat Lombok. Data yang digunakan adalah hasil pengukuran instrumen broadband echosounder SIMRAD EK80 frekuensi 200 kHz tipe pulsa continuous wave (CW) dengan data pendukung elevasi muka air, suhu, salinitas, dan densitas dari Conductivity Temperature Depth (CTD) “Yoyo” selama 24 jam. Nilai hambur balik didapatkan dengan analisis menggunakan perangkat lunak Sonar5-Pro. Echogram menunjukkan adanya pembentukan nonlinear internal wave disertai dengan adanya turbulensi yang terjadi pada saat gelombang pasang membawa massa air dengan densitas berbeda melewati topografi kasar di Selat Lombok. Nilai backscatter hasil segmentasi berentang dari -75 dB sampai -59 dB.
STUDI KOMPARASI METODE MIGRASI SEISMIK DALAM MENGKARAKTERISASI RESERVOIR MIGAS DI BLOK KANGEAN, LAUT BALI MENGGUNAKAN INVERSI IMPEDANSI AKUSTIK BERBASIS MODEL Aditya P. Sidiq; Henry M. Manik; Tumpal B. Nainggolan
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4936.733 KB) | DOI: 10.29244/jitkt.v11i1.23028

Abstract

ABSTRAK Karakterisasi reservoir menjadi penting dalam tahapan eksplorasi minyak dan gas bumi. Salah satu hal yang dibutuhkan untuk mencapai keakuratan dalam mengkarakterisasi reservoir adalah penampang seismik yang sesuai dengan penampang aslinya. Struktur lapisan bumi yang kompleks mengakibatkan gelombang terdifraksi, sehingga penampang seismik mengalami pembelokan dari posisi sebenarnya. Penelitian ini menerapkan metode migrasi seismik Kirchhoff dan Stolt (F-K) untuk mengembalikan posisi reflektor pada waktu dan kedalaman yang sebenarnya pada data seismik 2D di Perairan Utara Bali. Data seismik diintegrasikan dengan data sumur APS-1 sebagai kontrol untuk diinversikan dengan teknik inversi berbasis model sehingga dapat mengkarakterisasi reservoir.  Penelitian ini bertujuan membandingkan hasil migrasi seismik yaitu migrasi Stolt dan migrasi Kirchhoff untuk diinversikan menggunakan metode inversi berbasis model sehingga dapat diketahui sejauh mana kualitas data seismik mempengaruhi proses karakterisasi reservoir. Nilai korelasi dari hasil analisis regresi antara log impedansi inversi dengan log impedansi data sumur pada migrasi Kirchhoff sebesar 0,739 dan galat regresi sebesar 873,54, sedangkan pada migrasi Stolt memiliki nilai korelasi sebesar 0,698 dan nilai galat sebesar 1236,17. Hal ini menunjukkan bahwa migrasi Kirchhoff lebih baik dari migrasi Stolt baik secara kualitatif maupun kuantitatif dalam mengkarakterisasi reservoir hidrokarbon. ABSTRACTReservoir characterization is an important method in gas and oil exploration. In order to obtain accuracy for defining reservoir, required seismic image that similar to the actual seismic image. The complexity of earth structure could cause diffracted waves, therefore, seismic image was diffracted from its actual position. This study applies Kirchhoff and Stolt (F-K) seismic migration methods to restore the position of the reflector at the actual time and depth  seismic data in North Bali. Seismic data is integrated with APS-1 well data as controls to be converted with model-based inversion techniques so as to characterize the reservoir. This study aims to compare the results of seismic migration namely Stolt and Kirchhoff migration to be converted using a model-based inversion method so that it can be seen to what extent the quality of seismic data influences the reservoir characterization process. Correlation value from the results of regression analysis between inversion log impedance and well impedance log data in Kirchhoff migration is 0.739 and regression error is 873.54, while the Stolt migration has a correlation value of 0.698 and an error value of 1236.17. This shows that Kirchhoff's migration is better than Stolt migration both qualitatively and quantitatively in characterizing hydrocarbon reservoirs.
PEMETAAN SUHU LAUT DI PERAIRAN TELUK BALIKPAPAN MENGGUNAKAN TEKNOLOGI AKUSTIK TOMOGRAFI PANTAI Teguh Arif Pianto; Henry M. Manik; Indra Jaya
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 11 No. 1 (2019): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3685.635 KB) | DOI: 10.29244/jitkt.v11i1.22990

Abstract

ABSTRAKSuhu laut dalam oseanografi merupakan faktor penting yang menunjukkan kualitas suatu perairan sehingga pemetaan secara spasial dan temporal perlu dilakukan. Salah satu teknologi yang potensial efektif untuk dapat digunakan dalam melakukan pemetaan suhu laut adalah dengan menggunakan teknologi akustik tomografi pantai Coastal Acoustic Tomography system (CATs). Penerapan teknologi akustik tomografi pantai di perairan teluk Balikpapan belum pernah dilakukan sebelumnya. Teknologi ini dapat menjangkau daerah yang luas dan dapat melakukan pemetaan suhu laut perlapisan kedalaman dengan resolusi temporal permenit. Tujuan dari penelitian ini adalah untuk merekonstruksi data akustik tomografi untuk mendapatkan nilai suhu laut dari data waktu tempuh yang diperoleh antar pasangan stasiun sehingga menjadi peta sebaran suhu laut di jejaring CATs. Penelitian dilakukan dengan menempatkan 4 stasiun akustik yang direkonstruksi melalui metode inversi dari waktu tempuh akustik yang diperoleh antar pasangan stasiun dan suhu rata-rata di lintasan terbentuk menggunakan formula Mackenzie. Hasil rekonstruksi suhu rata-rata pada lintasan jejaring CATs berkisar 28oC sampai 30oC. Uji validasi data suhu laut hasil pengukuran dengan metoda akustik tomografi pantai dengan alat ukur CTD (Conductivity Temperature Depth) diperoleh akurasi antara nilai suhu laut hasil pengukuran dengan data CTD mencapai 98%, nilai koefisien korelasi R=0,79. Kesimpulan penelitian didapati bahwa rekonstruksi data Akustik Tomografi telah berhasil mengakusisi data suhu laut dengan tingkat ketelitian pada pengukuran yang dilakukan di perairan Teluk Balikapapan mencapai lebih dari 97%. ABSTRACTSea temperature in oceanography is an important factor to figure out the quality of waters that the conducted mapping spatially and temporally. One of the potential technologies effectively can be carried out by mapping sea temperature is a coastal acoustic tomography system (CATs). This technology has never been implemented conducted in Balikpapan Bay before. The technology is able to reach out of a wide range of seawater area and to map sea temperature according to its depth layers.The purpose of this study is to reconstruct tomographic acoustic data to obtain ocean temperature values from travel time data that obtained between pair of stations, so it became a map of sea temperature distribution in CAT’s network. This research was taken by setting four reconstructed observational stations through inversion method of received acoustic travel time among paired stations. The average of temperatures in the formed tracks was analyzed by using Mackenzie formula.The results of reconstructing the seawater temperatures in the CATs tracking networks are in a range of 28oC – 30oC. Aalidation test of the seawater temperature data resulted from coastal acoustic tomography method by using a CTD (Conductivity Temperature Depth) generates the accuracies of the seawater temperature are more than 98% and a correlation coefficient R = 0.79. The finding of the study was the reconstruction of Acoustic Tomography data has succeeded in acquiring sea temperature data with a level of accuracy level of more than 97%.
Analisis Sinyal Sub Bottom Profiler Untuk Penentuan Parameter Uji Penetrasi Dasar Perairan Henry Andriadi; Henry M. Manik; Irsan Soemantri Brodjonegoro
Jurnal Teknik Sipil Vol 27 No 3 (2020)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2020.27.3.7

Abstract

Penyelidikan dan pengujian dasar perairan memegang peranan penting pada konstruksi pondasi kelautan dikarenakan informasi yang dihasilkan akan mempengaruhi desain dan  faktor keamanan.  Umumnya informasi mengenai dasar perairan dan lapisan dibawahnya disediakan oleh metode konvensional seperti Standard Penetration Test (SPT), yang  memerlukan waktu dan biaya lebih tinggi pada pelaksanaan di area  laut yang luas. Metode remote sensing akustik bawah air dengan  instrument Sub Bottom Profiler (SBP) merupakan metode yang lebih efisien  untuk mendapatkan informasi dasar perairan pada area yang luas. Tujuan dari penelitian ini adalah untuk menganalisis sinyal SBP dan menggunakannya untuk menentukan parameter SPT (N-value), menggunakan instrumen parametrik SBP. Data SBP diambil pada bulan Desember 2019 di Teluk Kariangau, Balikpapan, dengan membuat 2 jalur survey lurus yang melalui 3 titik borehole eksisting. Ekstraksi koefisien refleksi dari pemrosesan sinyal SBP menunjukkan tipe dasar perairan silty clay dengan rentang nilai koefisien refleksi berkisar 0,316 "“ 0,395, dan carbonaceous clay dengan nilai koefisien refleksi 0,426. Metode inversi sedimen menghasilkan nilai property fisik sedimen pada lapisan di bawah dasar perairan. Konstruksi parameter N-value menunjukkan posisi lapisan keras pada kedalaman 16 "“ 32 m dari dasar perairan, dengan range nilai N-value berkisar 28 "“ 52 blowcount.
Implementasi Multibeam Echosounder untuk Pengukuran dan Analisis Data Kedalaman Perairan Teluk Jakarta Berdasarkan Standar International Hydrographic Organization Christian Nugroho; Henry Manik; Dwiadji Gultom; Muhammad Firdaus
POSITRON Vol 12, No 1 (2022): Vol. 12 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1188.897 KB) | DOI: 10.26418/positron.v12i1.51833

Abstract

Sebagian besar wilayah Indonesia adalah perairan laut dengan luas meliputi dua pertiga luas wilayah negara. Survei hidrografi menggunakan multibeam dinilai lebih efektif dan efisien dalam mengeksplorasi laut terutama kondisi dasar laut apabila dibandingkan dengan single beam echosounder.  Perairan Teluk Jakarta yang dangkal dengan kegiatan maritim yang padat terutama arus lalu-lintas pelayaran memerlukan pemahaman yang kritis dan spesifik untuk menjaga keselamatan navigasi di laut. Untuk itu diperlukan standar survei dalam pengambilan dan pengolahan data multibeam yaitu aturan standar berdasarkanInternational Hydrographic Organization (IHO) yang memuat kalibrasi patch test, kalibrasi offset statik, koreksi pasang surut, dan koreksi kecepatan rambat suara dalam air dan uji kualitas data. Data multibeam yang diperoleh telah dikalibrasi dan dikoreksi dengan hasil uji kualitas  pada orde spesial sebesar 97.47%.  Pengukuran multibeam menghasilkan data kedalaman maksimum perairan  Teluk Jakarta sebesar 10.92 m, kedalaman minimum sebesar 5.84 m, dan rata-rata kedalaman 8.26 m. Interpretasi morfologi dan topografi dasar laut membentuk alur cekungan seperti parit dengan asumsi hasil pengerukan atau erosi.  Analisis data kedalaman menunjukkan terdapat area pendangkalan di sisi barat daya cekungan dengan diperoleh adanya dua titik kedangkalan.
KUANTIFIKASI KAPAL KARAM BERMATERIAL LOGAM MENGGUNAKAN MULTIBEAM ECHOSOUNDER Ari Wahyudi; Henry M. Manik; Indra Jaya
Jurnal Teknologi Perikanan dan Kelautan Vol 8 No 1 (2017): MEI 2017
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3989.515 KB) | DOI: 10.24319/jtpk.8.59-65

Abstract

The use of Multibeam echosounder (MBES) equipment for seabed detection has been done by several researchers, which provided intensity values of each research object. However, artificial targets (such as shipwreck) was very dangerous object for ship navigation hence its very important to quantify it. This research was conducted in the Sunda Strait to detect the target of metal shipwreck. The Kongsberg EM 2040 MBES was used along with supporting equipment and SIS software as a data recorder. MBES acquisition results then processed using software CARIS. Display of the results were presented using the software CARIS and Surfer. The results of this study showed that the detection of the shipwreck with MBES Kongsberg EM 2040 is very clear with 3-dimensional shape of the shipwreck. The shipwreck backscattering intensity values have range from -3 to +6.99 dB.
QUANTIFICATION OF TUNA FISH TARGET STRENGTH USING QUANTITATIVE ECHO SOUNDER Henry M. Manik
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 1 No. 1 (2009): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (693.586 KB) | DOI: 10.29244/jitkt.v1i1.7936

Abstract

A preliminary research programme was carried out in order to study the acoustic wave reflection or target strength (TS) of tuna fish using a quantitative echo sounder (QES). The relationships between TS to fork length (FL) and swimbladder volume, for bigeye tuna (Thunnus obesus) and yellowfin tuna (T. albacares) are investigated. The TS of bigeye tuna was about 3 dB higher than yellowfin tuna when comparing species at the same size. The result can be correlated to the swimbladder volume differencebetween species. The relationship between TS and swimbladder volume was quantified for both species.Keywords: tuna fish, target strength, quantitative echo sounder
Acoustic systems (split beam echo sounder ) to determine abundance of fish in marine fisheries Lubis, Muhammad Zainuddin; Manik, Henry M
Journal of Geoscience, Engineering, Environment, and Technology Vol 2 No 1 (2017): JGEET Vol 02 No 01 : March (2017)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (473.936 KB) | DOI: 10.24273/jgeet.2017.2.1.38

Abstract

Acoustic waves are transmitted into the subsurface ocean will experience scattering (scattering) caused by marine organisms, material distributed in the ocean, the structure is not homogeneous in seawater, as well as reflections from the surface and the seabed. Estimation of fish stocks in the waters wide as in Indonesia have a lot of them are using the acoustic method. The acoustic method has high speed in predicting the size of fish stocks so as to allow acquiring data in real time, accurate and high speed so as to contribute fairly high for the provision of data and information of fishery resources.  Split beam echo sounder comprises two aspects, and a transducer. The first aspect is the high-resolution color display for displaying echogram at some observations and also serves as a controller in the operation of the echo sounder. The second aspect is transceiver consisting of transmitter and receiver. The Echosounder divided beam first inserted into the ES 3800 by SIMRAD beginning of the 1980s and in 1985 was introduced to fishermen in Japan as a tool for catching up. Split beam transducer is divided into four quadrants.  Factors that contribute affect the value of Target Strength (TS) fish Strength target can generally be influenced by three factors: a target factor itself, environmental factors, and factors acoustic instrument. Factors include the size of the target, the anatomy of fish, swim bladder, the behavior of orientation.
Co-Authors . Susilohadi Adhi Kusuma Negara Aditya P. Sidiq Agung D. Syakti Agus Atmadipoera Agus S. Atmadipoera Agustina Sartika Yos Ekaristi Manik Aldwin Adrianus Alfrida Romauli Amanda Astri Pratiwi Febrianti Anang P. Adi Anang Prasetia Adi Anang Prasetia Adi Andi Achmadi Andi Yaodi Nurani Yamin Angga Dwinovantyo Ari Wahyudi ARI WAHYUDI Ari Wahyudi Asep Ma'mun Asep Ma’mun Asep Ma’mun Asep Priatna Augy Syahailatua Aulia Ranggi Pamalik Bagas O. Siahaan Billi R Kusumah Billi Rifa Kusumah Catur Purwanto Christian Nugroho Deddy Bakhtiar Deddy Bakhtiar Djoko Hartoyo Domey Moniharapon Dony Apdillah Dony Apdillah Dwi Charnila Dwiadji Gultom Edriyan Situmorang Fahrulian Fahrulian Fahrulian Fahrulian Fahrulian Fahrulian Fathkhurozak Yunanda Rifai Febrianto, Try Gentio Harsono Gentio Harsono Hanita Nur Fitria Hawis H Madduppa Hendra Jayanto Henry Andriadi Hollanda Arief Kusuma, Hollanda Arief Imam Mudita Indah Nurkomala Indra Jaya Indra Jaya Indra Jaya Indra Jaya Indra Jaya Indra Jaya Indra Jaya Irsan Soemantri Brodjonegoro Ita Wulandari Jales Veva Jaya Junaedi, Liva La Elson Liva Junaedi M Hasbi Sidqi Alajuri M. Agung Sedayu M. Hasbi Sidqi Alajuri Muhammad Firdaus Muhammad Sanubari Muhammad Siddiq Sangadji Muhammad Zainuddin Lubis Muhammad Zainuddin Lubis R. Yanuar H. P Randi Firdaus Rina Fajaryanti Rina Nurkhayati Rina Zuraida Rizqi Ayu Farihah Saifur Rohman Siti Novrianti Winjaniatun Sri Pujiyati Steven Solikin Subarsyah Subarsyah Subarsyah Subarsyah Subarsyah Subarsyah Susilo Hadi Susilohadi Susilohadi Susilohadi Susilohadi Susilohadi Teguh Arif Pianto Totok Hestirianoto Tri Nur Sujatmiko Tumpal B. Nainggolan Tumpal Bernhard Nainggolan Tumpal Bernhard Nainggolan Tumpal Bernhard Nainggolan Udrekh Udrekh Vincentius P. Siregar Wijopriono Yanuar, Ratna Yoga Prihantoro Yoga Prihantoro