2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)最新文献

Effects of Different Hydrophone Sensitivities on Underwater Signal Measurement in the Test Tank 不同水听器灵敏度对试验槽水下信号测量的影响

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176258

Laily Fajarwati, H. Adinanta, Yusron Feriadi, E. Widjiati, Rahadian, Chandra Permana, Arga Iman Malakani, Amilatin Rohmah

{"title":"Effects of Different Hydrophone Sensitivities on Underwater Signal Measurement in the Test Tank","authors":"Laily Fajarwati, H. Adinanta, Yusron Feriadi, E. Widjiati, Rahadian, Chandra Permana, Arga Iman Malakani, Amilatin Rohmah","doi":"10.1109/OETIC57156.2022.10176258","DOIUrl":"https://doi.org/10.1109/OETIC57156.2022.10176258","url":null,"abstract":"Underwater acoustic research nowadays is very much needed to achieve mastery of technology in underwater communication systems. At this stage, there isn’t much literature on tropical seawater such as in Indonesia. To achieve these key technologies, it is necessary to master these supporting technologies. Instrumentation in communication systems using underwater acoustics signals must be calibrated through the preparation stage before being implemented in the ocean experiment. In this paper, underwater acoustic signals measurement results are compared to two different hydrophones with different sensitivities. The experiment was carried in the test tank of the Hydrodynamic Laboratory of BRIN, in order to investigate the performances of underwater acoustic instrumentation. Based on the test, it concluded that the hydrophone B, with sensitivity of -208dBV re 1μPa, has a higher sensitivity than another hydrophone A, with sensitivity of -180dB re 1V/μPa. This is proven by the ripple in the received signal from the hydrophone A. With the frequency variation in the transmitted sinusoidal signal, the hydrophone A has a negative correlation between the PSD and the frequency change with the value of 0,9947.","PeriodicalId":273660,"journal":{"name":"2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121517996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An FFT-Based Method for Wave Decomposition from Wave and Tide Monitoring Using A01NYUB Sensor 基于fft的A01NYUB波潮监测波浪分解方法

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176211

Sekar Adiningsih, Y. N. Fadlilah, Rizki Taqwa Putranto, Syifa Agfanita, Salmaa Bayrus, Rossi Nur Iriani, Moses Wicaksono, S. Ikhtiarino, S. Wulandari, Yustinus Adyaksa, C. B. Petrova, Satria Ginanjar, A. Wirasatriya, R. Widiaratih, D. Sugianto, Kunarso Kunarso, R. Susanto

{"title":"An FFT-Based Method for Wave Decomposition from Wave and Tide Monitoring Using A01NYUB Sensor","authors":"Sekar Adiningsih, Y. N. Fadlilah, Rizki Taqwa Putranto, Syifa Agfanita, Salmaa Bayrus, Rossi Nur Iriani, Moses Wicaksono, S. Ikhtiarino, S. Wulandari, Yustinus Adyaksa, C. B. Petrova, Satria Ginanjar, A. Wirasatriya, R. Widiaratih, D. Sugianto, Kunarso Kunarso, R. Susanto","doi":"10.1109/OETIC57156.2022.10176211","DOIUrl":"https://doi.org/10.1109/OETIC57156.2022.10176211","url":null,"abstract":"Monitoring Sea level to obtain tide and wave values using acoustic sensors has the potential to be influenced by other factors. This causes the measurement results to have noise that can affect the quality of the resulting monitoring data. This study aims to decompose the monitoring results of the time series sea level data, to show the recorded wave variations. This study is located in Teluk Awur, Jepara, Indonesia. Sea level data was recorded for ten days using the A01NYUB ultrasonic sensor starting on November 4, 2022, to November 13, 2022. The results of the recording data from the A01NYUB sensor were decomposed using Fast Fourier Transform (FFT) and Continuous Wavelet Transform (CWT) based on the classification of the wave period. The results of the decomposition of sea level data from the sensor show that there are several classifications of waves with different periods. There are Ordinary Gravity Waves with a period of 15s-30s and an amplitude of ~1 cm; with Infragravity Waves a period of 30 s – 5 m and an amplitude of ~8.5 cm; are Long Period Waves with a period of 5min – 12h and an amplitude of ~60 cm; Ordinary Tide Waves with a period of 12h – 24h and an amplitude of ~10 cm; and Trans tidal Waves with a period of 12h – more and an amplitude of ~7.9 cm. The monitoring data were also adjusted to the MSL datum. The waters of Jepara have tidal characteristics, namely tidal asymmetry.The tides in Teluk Awur are mixed tides prevailing semi-diurnal. The A01NYUB ultrasonic sensor can record wave data with the lowest period which is Ordinary Gravity Waves and the highest period which is Trans Tidal Waves.","PeriodicalId":273660,"journal":{"name":"2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120867509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data Analysis and Visualization of INA-CBT Labuan Bajo System INA-CBT纳闽巴霍系统的数据分析与可视化

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176229

Amalia Irma Nurwidya, I. P. A. Yogiswara, I. M. Astawa, S. P. Anggraeni, Rifki Firdaus, Leli Lailatul Jannah, L. Setianingrum, M. Hamidah, Wayan Wira Yogantara, Edhi Purnomo, Michael Andreas Purwoadi, S. Rahardjo, Muhammad Firdaus, T. Pramudya

{"title":"Data Analysis and Visualization of INA-CBT Labuan Bajo System","authors":"Amalia Irma Nurwidya, I. P. A. Yogiswara, I. M. Astawa, S. P. Anggraeni, Rifki Firdaus, Leli Lailatul Jannah, L. Setianingrum, M. Hamidah, Wayan Wira Yogantara, Edhi Purnomo, Michael Andreas Purwoadi, S. Rahardjo, Muhammad Firdaus, T. Pramudya","doi":"10.1109/OETIC57156.2022.10176229","DOIUrl":"https://doi.org/10.1109/OETIC57156.2022.10176229","url":null,"abstract":"Indonesia Cable-Based Tsunameter (INA-CBT) has been successfully deployed and operating at Labuan Bajo of East Nusa Tenggara Province with one landing station (LS) and two ocean bottom units (OBUs). We present the data flow of the first time ever working CBT system in Indonesia, by dividing it into four major steps, i.e., data acquisition, data processing, data transmission, and data visualization. In data acquisition, the bottom pressure recorder (BPR) and 3-axes accelerometer sensors acquire water level and ground shaking data to be sent to the LS. The data processing step adds a timestamp to each data and processes BPR data with a tsunami detection algorithm (TDA), while data transmission sends the data from LS to the read down station (RDS). Lastly, RDS data are visualized in a web application. The data shows that the system can detect earthquake events with a time difference compared to that of the Meteorological, Climatological, and Geophysical Agency (BMKG). Furthermore, the system can also predict the sea level 15 seconds in advance. However, as no tsunami occurs, the tsunami alert feature cannot be verified yet. At this moment, we are expecting to develop another much more suitable algorithm for the INA-CBT system in the future by utilizing all the data collected.","PeriodicalId":273660,"journal":{"name":"2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129944245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preliminary Investigation of the Mooring Line Tension of the Quad-Spar Tidal Current Power Plant Prior to Operation 四梁式潮流电站运行前系泊索张力的初步研究

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176222

R. Prastianto, S. Junianto, N. Arini, Mukhtasor, J. Pratilastiarso, Wahyu Nur Fadilah

{"title":"Preliminary Investigation of the Mooring Line Tension of the Quad-Spar Tidal Current Power Plant Prior to Operation","authors":"R. Prastianto, S. Junianto, N. Arini, Mukhtasor, J. Pratilastiarso, Wahyu Nur Fadilah","doi":"10.1109/OETIC57156.2022.10176222","DOIUrl":"https://doi.org/10.1109/OETIC57156.2022.10176222","url":null,"abstract":"Floating tidal current power plant is used to capture energy that is close to the sea surface. This technology is supported by a floating structure and mooring system. In this paper, the floating structure is of a quad-spar type. Therefore, the preliminary analysis of the mooring system was carried out to hold the quad-spar in its potential location. The configuration of the mooring system is catenary type consisting of four types of wire ropes. It was numerically investigated using the theory of motion of the floating structure. The numerical model shows that the maximum tension of mooring line 2 is much higher than that of mooring line 1. In addition, the maximum tension of mooring line 4 is greater than that of mooring line 3. The input load are wave of the direction of the quartering seas. The results of this analysis are used as a reference to maintain the quad-spar tidal current power plant. It provides the maximum tolerable tension to withstand the generator during operation.","PeriodicalId":273660,"journal":{"name":"2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129261324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Indonesia National Oceanographic Data Center (InaNODC): Design, Function, Deployment and Maintenance 印度尼西亚国家海洋数据中心(InaNODC):设计、功能、部署和维护

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176218

P. K. Putra, R. Arifandri, Muhammad Iqbal Habibie, D. B. Sencaki, Hari Prayogi, A. Agustan, L. Sumargana, Raden Muhammad Taufik Yuniantoro, H. Priyadi, M. Frederik

{"title":"Indonesia National Oceanographic Data Center (InaNODC): Design, Function, Deployment and Maintenance","authors":"P. K. Putra, R. Arifandri, Muhammad Iqbal Habibie, D. B. Sencaki, Hari Prayogi, A. Agustan, L. Sumargana, Raden Muhammad Taufik Yuniantoro, H. Priyadi, M. Frederik","doi":"10.1109/OETIC57156.2022.10176218","DOIUrl":"https://doi.org/10.1109/OETIC57156.2022.10176218","url":null,"abstract":"As a maritime country, Indonesia needs a reliable marine data management by improving its maritime data and information systems. The Indonesian National Oceanography Data Center (InaNODC) is a web-based system designed to archive, visualize, and share marine environmental and ecosystem data. Several prototypes of InaNODC have been successfully developed. Based on the evaluation results, InaNODC continues to be developed to be better and more perfect. Currently InaNODC has entered the final stage, namely the Deployment and Maintenance stage. This article focuses on providing a description of the current InaNODC along with its support system. InaNODC uses a microservice architecture, different from the previous version which still uses a monolithic architecture. The data standard referred to is the international marine data standard. Currently, various data are available with a data span of more than 100 years. Available marine data can be downloaded and analyzed directly, users can also share their marine data into the system. Prior to entering the deployment stage, InaNODC has been evaluated through several tests to ensure technology readiness and information security guarantees prior to launch. InaNODC has also developed various support systems to make it easier for users and administrators when using, managing and maintaining the system.","PeriodicalId":273660,"journal":{"name":"2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126470081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Underwater Acoustic Location Estimation of Flight Recorder Using Onboard Ad Hoc Wireless Sensor Network 基于机载自组织无线传感器网络的飞行记录仪水声定位估计

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176265

Thomas Wiepking, M. Greef, T. Ozcelebi

{"title":"Underwater Acoustic Location Estimation of Flight Recorder Using Onboard Ad Hoc Wireless Sensor Network","authors":"Thomas Wiepking, M. Greef, T. Ozcelebi","doi":"10.1109/OETIC57156.2022.10176265","DOIUrl":"https://doi.org/10.1109/OETIC57156.2022.10176265","url":null,"abstract":"Underwater Wireless Sensor Networks (UWSN) are an upcoming technology for various underwater applications, such as environment monitoring and localization of objects. An important use case for underwater object localization is finding a flight recorder (black box) after an oceanic flight crash. Current technology for finding this black box uses hydrophone-equipped vessels or autonomous underwater vehicles (AUV). However, these methods arrive too late at the crash site complicating the search process. In this article, an alternative approach to locating the sinking black box is presented utilizing an UWSN onboard the aircraft. By registering acoustic ping signals of the underwater locator beacon (ULB) of the flight recorder, the nodes in the network collaboratively track the location of the sinking black box using a Time-Difference of Arrival (TDoA) approach. Underwater nodes are used to extend network coverage to deep-ocean levels and communicate their findings by utilizing wireless acoustic modems. Simulation results show that this approach enables locating the black box with an error less than 50 meters within 25 minutes after the first ping was sent by the ULB, outperforming current vessel-or AUV-based localization approaches in time and coverage.","PeriodicalId":273660,"journal":{"name":"2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121245701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Underwater Acoustic Noise Characterization In Sunda Straits Waters 巽他海峡水域水声噪声特性研究

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176240

Rahadian, D. Arifianto, G. Hendrantoro, E. Widjiati, Wirawan

{"title":"Underwater Acoustic Noise Characterization In Sunda Straits Waters","authors":"Rahadian, D. Arifianto, G. Hendrantoro, E. Widjiati, Wirawan","doi":"10.1109/OETIC57156.2022.10176240","DOIUrl":"https://doi.org/10.1109/OETIC57156.2022.10176240","url":null,"abstract":"Communication using acoustic signals from underwater sensors to the surface is not always well received. Missing messages can occur for various reasons. Based on the oceanographic phenomenon, this can occur due to changes in the speed of sound propagation at different depths in the water, or due to underwater currents that cause signal attenuation or scattering. Judging from other natural phenomena, communication failures can be caused by noise that interferes the receiving system near the water surface. For this reason, in this study, underwater acoustic noise measurements will be carried out start a certain point in Indonesian waters. The result will determine the characteristics of noise near the water surface, which can affect underwater communication systems. The noise measured, will distinguish based on environmental conditions such as rain, wind and others that result in certain sea state conditions at sea level. The research was conducted using a surface buoy which has been installed with data recording devices from two hydrophones facing up and down. Measurements were carried out continuously for 6 days with data recording every 5 minutes interval. To determine the real time weather conditions at the research location, rainfall prediction data obtained from GSMaP (Global Satellite Mapping of Precipitation) satellite data were used. Hydrophone data analysis was carried out by applying the Fast Fourier Transform spectrum analysis method and correlated to the weather conditions at that time. The analysis is grouped into 3 parts, namely when the weather conditions are sunny, light and moderate rain.","PeriodicalId":273660,"journal":{"name":"2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)","volume":"273 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116550171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Real-Time Tsunami Early Warning System Dashboard Based on Tunami-F1 and Machine Learning in Sunda Arc, Indonesia 基于Tunami-F1和机器学习的印尼巽他弧实时海啸预警系统仪表板开发

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176243

Dhedy Husada Fajar Pradana, E. Wiguna, Amien Rusdiutomo, Ayu Novitasari Saputri, M. Wibowo, W. Hendriyono

{"title":"Development of Real-Time Tsunami Early Warning System Dashboard Based on Tunami-F1 and Machine Learning in Sunda Arc, Indonesia","authors":"Dhedy Husada Fajar Pradana, E. Wiguna, Amien Rusdiutomo, Ayu Novitasari Saputri, M. Wibowo, W. Hendriyono","doi":"10.1109/OETIC57156.2022.10176243","DOIUrl":"https://doi.org/10.1109/OETIC57156.2022.10176243","url":null,"abstract":"The majority of tsunamis in Indonesia are nearfield tsunamis, therefore a quick tsunami early warning system is essential to minimize the risk. This study aimed to build a prototype of the dashboard for tsunami early warning systems that can provide tsunami prediction within the first five minutes. This prototype of the dashboard has the main function to predict the occurrence of tsunamis based on hydrodynamic modeling of wave propagation and tsunami artificial intelligence (AI) modeling which runs simultaneously when receiving earthquake data with tsunami potential. The AI model needs just a few seconds to predict tsunami heights and arrival times at affected locations, while the hydrodynamic wave propagation model needs a few minutes to complete the task. However, the results from the latter model are more accurate and complete, such as sea level elevation and the estimated time of arrival. The result of this study shows that the dashboard prototype can quickly and accurately display the results of tsunami predictions by combining the results of the two models. The results and other data are then compiled into a tsunami bulletin and distributed to competent authorities. This study is expected to be used as one of the considerations in developing a dashboard system for tsunami early warning by applying AI in addition to tsunami propagation modeling.","PeriodicalId":273660,"journal":{"name":"2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129756903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of Multibeam Data for the Identification of a Possible Free Span on a Subsea Pipeline 多波束数据在海底管道自由跨度识别中的应用

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176244

Y. Haryadi, M. Irfan, D. Muljawan, S. Ardhyastuti

{"title":"Application of Multibeam Data for the Identification of a Possible Free Span on a Subsea Pipeline","authors":"Y. Haryadi, M. Irfan, D. Muljawan, S. Ardhyastuti","doi":"10.1109/OETIC57156.2022.10176244","DOIUrl":"https://doi.org/10.1109/OETIC57156.2022.10176244","url":null,"abstract":"Free span on a subsea pipe is a pipe condition in which the pipe is floating and not supported either by seabed sediment or by a structure. Free span conditions can be seen from marine mapping surveys using underwater acoustic equipment, such as side scan sonar and multibeam echosounder. However, for initial identification, it is enough with high-resolution multibeam data without side scan sonar by mapping the pipeline segments that are likely to have free spans. Geometrically, the free span can be measured accurately because multibeam can generate a digital elevation model. Multibeam data has very accurate geometric values for calculating the length and height of the free span, as well as analyzing the potential for seabed depression or scouring in the vicinity. This study discusses the deepening of multibeam data to identify potential free spans in subsea pipelines by the free span risk classification method. This method can provide an overview of which segments of the subsea pipeline have the most potential for a free span. Then the engineering assessment stage can be carried out by conducting a side scan sonar survey to verify the free span condition. This can improve budget efficiency and survey effectiveness.","PeriodicalId":273660,"journal":{"name":"2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129368686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance of SCHT Sequences in Multicarrier Underwater Acoustic Communications System 多载波水声通信系统中SCHT序列的性能研究

2022 IEEE Ocean Engineering Technology and Innovation Conference: Management and Conservation for Sustainable and Resilient Marine and Coastal Resources (OETIC) Pub Date : 2022-12-19 DOI: 10.1109/OETIC57156.2022.10176246

Zi-Chen Fan, S. Rahardja

引用次数: 0