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All Journal Jurnal Teknologi Perikanan dan Kelautan Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut Jurnal Ilmu dan Teknologi Kelautan Tropis Seminar Nasional Aplikasi Teknologi Informasi (SNATI) ILMU KELAUTAN: Indonesian Journal of Marine Sciences Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology POSITRON Jurnal Keteknikan Pertanian Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Kelautan Tropis Jurnal Teknik Sipil Journal of Geoscience, Engineering, Environment, and Technology Journal of Applied Geospatial Information JURNAL ENGGANO Omni-Akuatika BULLETIN OF THE MARINE GEOLOGY Jurnal Otomasi Kontrol dan Instrumentasi Marine Research in Indonesia Bawal : Widya Riset Perikanan Tangkap Jurnal Kelautan Nasional International Journal of Remote Sensing and Earth Sciences (IJReSES) Jurnal Geologi Kelautan: Media Hasil Penelitian Geologi Kelautan Jurnal Riset Jakarta Jurnal Chart Datum Jurnal Risalah Kebijakan Pertanian dan Lingkungan Jurnal Nasional Teknik Elektro dan Teknologi Informasi TRANSPUBLIKA INTERNATIONAL RESEARCH IN EXACT SCIENCES (TIRES) Jurnal Rekayasa elektrika Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Policy Brief Pertanian, Kelautan, dan Biosains Tropika Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Fisheries & Marine Jurnal Perikanan The International Journal of Remote Sensing and Earth Sciences (IJReSES)

Henry Munandar Manik

Departemen Ilmu Dan Teknologi Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, IPB University, Bogor, 16680, Indonesia

Author-ID : 314177

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Mathematics Physics Social Sciences Other

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ENGINEERING OF ACOUSTIC TECHNOLOGY FOR UNDERWATER POSITIONING OBJECT Billi Rifa Kusumah; Indra Jaya; Henry M. Manik; . Susilohadi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 3 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Underwater Positioning System (UPS) is a system to track the existence of the position of an object by utilizing the arrival time of the signal measurement. On land, the system uses an electromagnetic signal called GPS. However, because it cannot penetrate water effectively, an acoustic signal is used as an alternative. The purpose of this research is to engineer the control system of data acquisition and underwater acoustic device to measure arrival time (TOA) and apply equation model for underwater sound source positioning system. the effective frequency resonance of the transducer and the hydrophone is at a frequency of 6 kHz. The acquisition control device is able to measure the TOA signal with an error on a digital channel smaller than an analog channel. The difference between the TOA values measured by oscilloscope and acquisition control system is caused by inaccuracy of threshold estimates at the receiver's peak detector circuit. The position of the sound source coordinates obtained from the equation model shows the highest difference in depth point (z) compared to points (x) and (y), caused by the equation model used is limited to four hydrophone units forming a horizontal baseline.

KLASIFIKASI HABITAT PERAIRAN DANGKAL MENGGUNAKAN LOGIKA FUZZY DAN MAXIMUM LIKELIHOOD PADA CITRA SATELIT MULTISPEKTRAL Muhammad Siddiq Sangadji; Vincentius Paulus Siregar; Henry Munandar Manik
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 3 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

ABSTRAKLogika fuzzy memiliki aplikasi di berbagai bidang, namun memiliki arti khusus untuk penginderaan jarak jauh. Logika fuzzy memungkinkan keanggotaan parsial, bagian yang sangat penting dibidang penginderaan jarak jauh, karena keanggotaan parsial diterjemahkan secara dekat dengan masalah piksel campuran. Penelitian ini bertujuan untuk menerapkan algoritma klasifikasi logika fuzzy untuk memetakan habitat dasar Perairan dangkal pada Citra Satelit SPOT 7 dan Sentinel 2A, menguji tingkat akurasinya dan membandingkan algoritma klasifikasi logika fuzzy dengan maximum likelihood. Pengambilan data lapang berlokasi di gusung Karang Lebar dan Karang Congkak, Kepuluan Seribu pada tanggal 6 Desember sampai dengan 10 Desember 2017. Keseluruhan hasil uji akurasi menunjukan bahwa algoritma logika fuzzy masih memiliki tingkat akurasi yang baik dibandingkan dengan algoritma maximum likelihood. Perbedaan ukuran pixel (resolusi spasial) dari citra satelit juga mempengaruhi hasil akurasi, dimana citra satelit SPOT 7 memiliki tingkat akurasi yang lebih besar dibandingkan dengan Sentinel 2A.ABSTRACTFuzzy logic has applications in various fields, but has special meaning for remote sensing. Fuzzy logic allows partial membership, a very important property in the field of remote sensing, since partial membership is translated closely to the problem of mixed pixels. The aim of this research is to apply fuzzy logic classification algorithm to map benthic habitat in SPOT 7 and Sentinel 2A satellite imagery, test its accuracy level and compare fuzzy logic classification algorithm with maximum likelihood. Field data retrieval located in Karang Lebar and Karang Congkak, Kepulauan Seribu on 6 December until 10 December 2017. The overall accuracy test results show that fuzzy logic algorithm still has a good accuracy level compared to the maximum likelihood algorithm. Differences in pixel size (spatial resolution) of satellite imagery also affect accuracy results, where SPOT 7 satellite imagery has greater accuracy then Sentinel 2A.

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

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%.

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

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.

Angular Range Analysis (ARA) and K-Means Clustering of Multibeam Echosounder Data for Determining Sediment Type Fahrulian Fahrulian; Henry M Manik; Indra Jaya; Udrekh Udrekh
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 4 (2016): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Backscatter value was a key to determine seabed characteristic. Level of intensity or backscatter informed through seabed type. One approach was use to analyze seabed type based on the value of backscatter was Angular Range Analysis (ARA). ARA utilize influence of angle backscattering intensities. The aim of this research was to determine value of backscatter from the bottom and used to initial prediction of seabed. Extraction processes of raw data obtained by acoustic signal processing techniques. Analysis of backscatter data was conducted by using K-means method to look the proximity of the centroid backscatter value against other values. Backscatter intensity from this sites ranged from -41,93 dB to -27 dB. The range value divided into three major classes based on Wenworth scale classification. Substrate type in the study site consists of sand, silt, and clay. Grain size diameter of each type include: sand 0.122713 mm (phi = 3.02), silt 0.018171 mm (phi = 5.78) and clay 0.002690 mm (phi= 8.53). Based on this result, signal processing multibeam echosounder able to classify seabed backscatter values to determine the seabed type Keywords: Angular Range Analysis, multibeam echosounder, K-Means

Measurement of Acoustic Reflection of Tuna Fish Using Echosounder Instrument Henry M. Manik
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 2 (2009): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Indonesia merupakan salah satu negara yang memiliki potensi perikanan tuna yang besar. Pendugaan populasi ikan tuna selama ini menggunakan statistik perikanan. Pendekatan statistik memiliki keterbatasan antara lain membutuhkan waktu yang lama, akurasi yang diragukan dan luas cakupan perairan yang sempit. Untuk itu perlu diupayakan metode baru yang memberikan informasi yang akurat, komprehensif, mutakhir dan berkelanjutan tentang ikan tuna. Salah satu metode mutakhir yang dapat mengetahui kondisi ikan tuna adalah metode akustik. Penerapan teknologi akustik memiliki kelebihan antara lain mudah dalam pengoperasian instrumen, akurasi dan presisi yang tinggi, dapat melakukan pemantauan dan kuantifikasi stok ikan secara kontinu, in situ dan real time dalam pemrosesan serta analisis data. Untuk aplikasi metode akustik tersebut maka penelitian dasar untuk menghitung sifat refleksi akustik atau dikenal dengan Target Strength (TS) dari ikan tuna dilakukan menggunakan echo sounder. Hasil yang diperoleh adalah hubungan nilai TS terhadap panjang ikan dan volume gelembung renang terhadap ikan tuna mata biru (Thunnus obesus) dan tuna sirip kuning (T. albacares). Target Strength (TS) ikan tuna mata biru lebih besar 3 dB dari ikan tuna sirip kuning pada ukuran yang sama. Hasil ini berhubungan dengan perbedaan volume gelembung renang dari kedua spesies tersebut. Hubungan antara TS dan volume gelembung renang ikan tuna dibahas dalam hasil penelitian ini. Implikasi hasil riset ini adalah tersedianya data dasar penelitian akustik terhadap ikan tuna di Indonesia.Kata kunci: ikan tuna, target strength (TS), split beam echo sounder Indonesia has a big potency of tuna fisheries. Unfortunately, a quantification method for tuna fish resources is not understood well. Usually, the estimation of tuna fish population using statistic method. This method has a limitation such as time consuming, less accuration and small area covered. For this reason, a novel method was used to give the high accuration, comprehensiveness, modern technology and real time monitoring of tuna fisheries. One of the modern method to detect and quantify tuna is underwater acoustics. The application of acoustic method has many advantages such as easy to operate the instrument, high accuration and precision, continuously monitoring and quantification, real time data processing and analysis. For this purpose, a research programme was carried out in order to study the acoustic wave reflection or target strength (TS) of tuna fish using an 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 difference between species. The relationship between TS and swimbladder volume was quantified for both species. The implication of this research is the avalaibility of tuna fish database using underwater acoustic technique. Key words : tuna fish, target strength, split beam echo sounder

Acoustic Observation of Zooplankton Using High Frequency Sonar (Observasi Akustik Zooplankton Menggunakan Sonar Frekuensi Tinggi) Henry M Manik
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 2 (2015): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Underwater acoustic sampling techniques provide an advantage over traditional net-sampling for zooplankton research. The research presents a methodology for extracting both biological and physical information from high frequency sonar. These methods can easily provide the information that will improve our understanding of the spatial and temporal distribution of zooplankton. Measured acoustic data converted into biological organisms and numerical physics-based scattering models were used in this research. The numerical backscattering process was modeled using the Distorted-Wave Born Approximation (DWBA) to predict the amount of sound scattered by a weakly scattering animal. Both acoustic measurement and DWBA modeled scattering patterns showed that acoustic scattering levels are highly dependent on zooplankton orientation. The acoustic backscattering from zooplankton depends on the material properties (i.e. the sound speed and density of the zooplankton), the shape and size, and the orientation relative to the incident acoustic wave. DWBA model significantly improve the accuracy and precision of zooplankton acoustic surveys. Zooplankton data measurement and DWBA model analysis provide a basis for future acoustical studies.

KARAKTERISTIK HAMBUR BALIK AKUSTIK PADA IKAN KAKAKTUA (Chlorurus sordidus) MELALUI PENGUKURAN SECARA EX-SITU DENGAN METODE AKUSTIK Deddy Bakhtiar; Indra Jaya; Henry M Manik; Hawis H Madduppa
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 17, No 4 (2021): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.17.4.271-278

Ikan kakaktua (Chlorurus sordidus) merupakan salah satu ikan herbivora pada ekosistem terumbu karang yang memiliki peran dalam menjaga kesehatan terumbu karang. Penelitian ini bertujuan untuk mempelajari karakteristik hambur balik akustik ikan kakaktua dan hubungannya dengan ukuran panjang ikan. Manfaat dari penelitian ini berguna untuk pendugaan distribusi ukuran dan kelimpahan ikan kakaktua di suatu perairan. Pengukuran hambur balik akustik dilakukan secara ex-situ menggunakan metode tethered, dimana ikan kakaktua digantung pada kedalaman 2 meter di bawah transduser dan di sounding dengan echosounder Simrad EK-15 pada frekuensi 200 kHz. Data hasil perekaman dianalisis dengan software Echoview 8 untuk memperoleh data target strength (TS). Hasil penelitian menunjukkan bahwa hambur balik ikan kakaktua (C. sordidus) memiliki nilai TS rata-rata -49.42 dB pada ukuran panjang baku berkisar 14 sampai 22 cm. Perbedaan nilai TS pada ikan kakaktua diduga dipengaruhi ukuran panjang tubuh, panjang gelembung renang dan aktifitas renang. Rasio ukuran panjang gelembung renang dan panjang tubuh tidak menunjukkan keterkaitannya dengan nilai TS. Hubungan antara TS dan panjang baku ikan kakaktua (C. sordidus) diformulasikan dalam persamaan TS = 10,43 Log SL – 62,65 (R2 = 0,752). Hasil ini berbeda dengan ketetapan Love (1977) dimana hambur balik akustik dari ikan merupakan kuadrat dari ukuran panjang ikan yang tetapkan dengan nilai slope (b) sebesar 20. Parrot fish (Chlorurus sordidus) is one of the herbivorous fish in coral reef ecosystems that has a role in maintaining the health of coral reefs. This study aims to study the characteristics of acoustic backscattering of parrot fish and their relationship to fish length measurements. The benefits of this study are useful for estimating the size and abundance distribution of parrot fish in a waters. Acoustic backscattering measurements were carried out ex-situ using the tethered method, where the parrot fish was hung at a depth of 2 meters below the transducer and sounded with a Simrad EK-15 echosounder at a frequency of 200 kHz. Recording data were analyzed with Echoview 8 software to obtain target strength (TS) data. The results showed that the backscatter of parrot fish (C. sordidus) had an average TS value of -49.42 dB at standard lengths ranging from 14 to 22 cm. Differences in TS values in parrot fish are thought to be influenced by body length, swimbladder length and swimming activity. The ratio of the size of the swimbladder length and body length does not indicate an association with TS values. The relationship between TS and standard length of parrot fish (C. sordidus) was formulated in the equation TS = 10.43 Log SL - 62.65 (R2 = 0.752). This result is different from the Love (1977) provision where the acoustic backscatter of a fish is the square of the length of the fish set with a slope (b) of 20.

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

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.

Distribution of Fish Target Strength in Malang Rapat Seawater of Bintan Island, Kepulauan Riau Province Andi Yaodi Nurani Yamin; Henry M Manik; Sri Pujiyati
Journal of Applied Geospatial Information Vol 4 No 1 (2020): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Malang Rapat is an area located in east Bintan Island. As a part of coastal communities, fisheries were the primary sector for public revenue in Malang Rapat. A qualified method is needed to determine the abundance and distribution of fish were required. Hydroacoustic technology is one method to solve this problem. This research aimed was to determine the value of fish target strength and to determine the pattern of fish distribution behavior in Malang Rapat, Kepulauan Riau Province, on September 23 and 24, 2016, using scientific echosounder Simrad EK15. The result indicated that fish target strength in Malang Rapat was -60 dB to -42 dB. This value was useful to estimate the length of fish ranged from 3 cm to 31 cm. The highest mean target strength based on depth was -48 dB at 10 m in the daytime and -52 dB at 3 m in the nighttime. The abundance of fish was found at night, precisely 3 meters from the surface of the water. The highest frequency appearance target strength range from -60 dB to -58 dB with 3.94 to 4.95 cm estimated fish length.

Co-Authors . Susilohadi Adhi Kusuma Negara Adi Purwandana Adi Purwandana Aditya P. Sidiq Adrianus, Aldwin Agung D. Syakti Agus Atmadipoera Agustina Sartika Yos Ekaristi Manik Agustinus Agustinus Alajuri, M Hasbi Sidqi Alfrida Romauli Amanda Astri Pratiwi Febrianti Anang P. Adi Anang Prasetia Adi Anang Prasetia Adi Andi Achmadi Andi Yaodi Nurani Yamin Angga Dwinovantyo Angga Dwinovantyo Ari Wahyudi Ari Wahyudi Asep Ma'mun Asep Maâ€™mun Asep Priatna Asmoro, Nuki Widi Augy Syahailatua Azhari, Ferian Bagas O. Siahaan Bernawis, Lamona Irmudyawati Billi R Kusumah Billi Rifa Kusumah Brojonegoro, Irsan S Catur Purwanto, Catur Choirul Umam, Choirul Christian Nugroho Dadang Handoko Deddy Bakhtiar Djoko Hartoyo Domey Moniharapon Dony Apdillah Dwi Charnila Dwiadji Gultom Edi Kusmanto Edy Hartulistiyoso Elson, La Faaris, Said M Fahrulian Fahrulian Fahrulian Fahrulian Fahrulian Fahrulian Fathkhurozak Yunanda Rifai Firdaus, Randi Fredrich Simanungkalit Gentio Harsono Gentio Harsono Handoko, Dadang Haqqu Ramdhani Hargiani, Fransisca Xaveria Hasan, Rozaimi Che Hascaryo, Anom Puji Hawari, Aqil Hawis H Madduppa Hendra Jayanto Hendra Jayanto Henry Andriadi Hestirianoto, Totok Hestirianoto, Totok Hestirianoto Hollanda Arief Kusuma Husal, Siddiq Husaini I Wayan Sumardana Eka Putra Imam Mudita Indah Nurkomala Indra Jaya Indra Jaya Indra Jaya Indra Jaya Indra Jaya Indra Jaya Irsan Soemantri Brodjonegoro Ita Wulandari Jales Veva Jaya Johar Setiyadi Junaedi, Liva Kang, Myounghee Karlisa Priandana Khairul Amri Kirana, Widiah Dwi Krisna Rendi Awalludin Kurniawan , Muhammad Aziz Kurniawan, Muhammad Azis Kusdiana, Dias La Elson, La Elson Lalita, Rayi Khasanah Larasati, Oktavira Dwi Demia Lazuardi, Muhammad Nur Riza Lili Somantri Liva Junaedi M. Agung Sedayu M.Rizal Keulana Manik, Agustina Sartika Muhamad Yulianto Muhammad Farhan Muhammad Firdaus MUHAMMAD ILHAM Muhammad Sanubari Muhammad Siddiq Sangadji Muhammad Zainuddin Lubis Muhammad Zainuddin Lubis Muhammad Zulfikar Muharrom, Eka Yudha Myounghee Kang Nainggolan, Tumpal Bernhard Napitupulu, Gandhi Napitupulu, Moses Nazar Nurdin Negara, Adhi K. Nur Fitria, Hanita Pamalik, Aulia Ranggi Prasetiawan, Agung Prihantoro, Andi Exyas Pujiyati, Sri Pujiyati Purwandana , Adi Putra, I Wayan Sumardana Eka R. Yanuar H. P Rabbani, Mochamad Rafif Radjawane, Ivonne Milichristi Rahmat, Ayi Rahmatullah, Amri Ratna Juita Sari Rina Fajaryanti Rina Nurkhayati Rina Zuraida Rizqi Ayu Farihah, Rizqi Ayu RR. Ella Evrita Hestiandari Saifur Rohman Setiyadi, Johar Setyanto, Agus Situmorang, Edriyan Sofyatuddin Karina Sri Pujiyati Steven Solikin Subarsyah Subarsyah Subarsyah Subarsyah Subarsyah Subarsyah Suhengki, Gemma Cahya Hafifah Suhengki Suhengki, Suhengki Sukoco, Nawanto Budi Sumantri, Willi Supriyanto, Taufiq Susilo Hadi Susilohadi Susilohadi Susilohadi Susilohadi Susilohadi Susilohadi Susilohadi Susilohadi Susilohadi Susilohadi Susilohadi Syahrin, Win Alfi Syahrul Purnawan Syahrul Purnawan Teguh Arif Pianto Tri Aji Tri Nur Sujatmiko Try Febrianto Tumpal B. Nainggolan Tumpal Bernhard Nainggolan Udrekh Udrekh Vincentius P Siregar Widodo S Pranowo Widodo Setiyo Pranowo Wijopriono Windra, Alivio Winjaniatun, Siti Novrianti Yoga Prihantoro Yoga Prihantoro Yulinar Firdaus, Yulinar Zahran, Hafizh

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