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MS Plan B Defense: Direction of arrival estimation of acoustic signals from a 2-element hydrophone array
https://hawaii.zoom.us/j/83894998063Jacob Foster Master’s Student Department of Ocean and Resources Engineering University of Hawai’i at Mānoa Zoom Meeting Link Meeting ID: 838 9499 8063 passcode: ORE https://hawaii.zoom.us/j/83894998063 This project explores the performance of the Maximum Eigengap Estimator in the omnidirectional hydrophone setting. The estimator is an unsupervised signal subspace steering vector estimator that we use to conduct direction-of-arrival estimation of ocean acoustic signals. It uses narrow-band aggregation of a broadband signal with an optimal weighting to maximize the signal-to-noise ration and identify the eigenvector that is closely oriented to the source signal that is computed from the sensor array output. The
MS Plan B Defense: A wave-flume study of the dispersion of tsunami-induced debris: Freight containers on a moored container ship
Holmes Hall 247 2540 Dole St, Honolulu, HI, United StatesJohn Melve Master’s Student Department of Ocean and Resources Engineering University of Hawai’i at Mānoa Holmes Hall 247 Having a substantial understanding of the hazards from tsunamis is very crucial to minimize the casualties and losses in coastal communities. The impacts of tsunamis on the pacific island nations can cause a huge devastating impact on road infrastructure, ports and harbor facilities, airports, and hotels close to the ocean. This will reciprocate to the tourism industry as a source of economic revenue for the islands. This experimental study specifically focused on the dispersion of the freight containers that are on a
Seminar: An Update on the SMART Cables Initiative for Observing the Ocean and Earth
Holmes Hall 243 2540 Dole Street, Honolulu, HI, United StatesDr. Bruce Howe Research Professor, Ocean and Resources Engineering University of Hawaii at Mānoa Location Information **this seminar will be held both in person (Holmes Hall 243) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 The Joint Task Force for Science Monitoring And Reliable Telecommunications (SMART) Subsea Cables is working to integrate environmental sensors (temperature, pressure, seismic acceleration) into submarine telecommunications cables. This will support climate and ocean observation, sea level monitoring, observations of Earth structure, tsunami and earthquake early warning and disaster risk reduction. We present an overview of the initiative and a description of ongoing
Seminar: Rapid Resilient Reefs for Coastal Defense (R3D)
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesDr. Ben Jones Director of Ocean Science and Technology Applied Research Laboratory (ARL), University of Hawai‘i Location Information **this seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 In June of 2022, five laboratories at the University of Hawai‘i (UH) began an ambitious effort to engineer a living coral reef designed to protect coastlines from storms and sea-level rise. Led by the Applied Research Laboratory, Rapid Resilient Reefs for coastal Defense (R3D) is a collaboration between UH, the University of California San Diego, Florida Atlantic University and Makai
Seminar: Motion Simulation and Risk Assessment of Dropped Objects in Offshore Operations
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesDr. “Vincent” Xiaochuan Yu Associate Professor Boysie Bollinger School of Naval Architecture and Marine Engineering University of New Orleans Location Information **this seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 Objects may accidentally fall from offshore platforms during lifting operations and may cause potential personnel and property damage in the offshore oil and gas industry. In this presentation, the author will briefly introduce an online database of potential and actual dropped object incidents - DORIS (Dropped Object Register of Incidents and Statistics) at first. Then the author
Seminar: Recent, current, and near future underwater construction projects undertaken by the Fleet Naval Construction Force in the Pacific Ocean area
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesZach Niezgodski, PE Lieutenant, US Navy & member of the Navy’s Civil Engineer Corps (Seabees) MS Student, Department of Ocean & Resources Engineering University of Hawai‘i at Mānoa Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 The Fleet Naval Construction Force is an essential enabler of Fleet maneuver, sea control, and sea denial from the littorals. The mission of the Fleet Naval Construction Force is to translate Fleet Commander’s requirements into engineering tasks and to execute them successfully. This presentation will focus on
Seminar: Simulation & Modeling in the Marine Industry: Defense Contractor & Climate Tech Startup
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesBradley Beeksma CFD Engineer, Stealth Renewable Energy Startup ORE Alumnus Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 Physics-based simulations and modeling tools are foundational for designing novel systems in the marine industry. These increasingly powerful tools allow for quicker design iterations, material cost savings, and improved engineering confidence, particularly at large design scales. In this talk, I’ll discuss my experience working at a US defense contractor, primarily using fluid-structure interaction modeling of inflatable structures in the ocean. I’ll also discuss my current
Seminar: AI-enabled Earth Observation for Coastal Resilience
Dr. Roger Wang Assistant Professor Civil and Environmental Engineering Rutgers School of Engineering Location Information **This seminar will be held over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/9616222236 In the big data era, do you often feel the opposite: I need more data for my research? As data science and data-driven algorithms emerge, there is an opportunity to develop and apply new methods of data mining from unconventional data sources. In this talk, I will show a few examples from my lab related to coastal resilience. In these examples, AI can extract valuable and unprecedented quality data
Seminar: Passive Deformation Control Through Fiber Reinforcement in Biology and Engineered Structures
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesDr. Mike Krieg Assistant Professor Department of Ocean & Resources Engineering University of Hawai‘i at Mānoa Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 Recently the field of soft robotics has seen significant interest and expansion. Soft robotic systems can offer several advantages including a decreased risk of injury from human-robot interactions, especially for medical robots, decreased risk of critical failure from impacts or crashes, and an ability to perform much more complex interactions with fluid surroundings, to name a few. However, these
Seminar: Development of a Fiber Optic Mooring and Marine Pipeline Installation Engineering
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesJohn Yeh Ocean Engineer Makai Ocean Engineering Inc Alexander Le Bon Senior Mechanical Engineer Makai Ocean Engineering Inc Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 Makai Ocean Engineering will present several recent projects including the development of a Fiber Optic Mooring system, and the installation engineering of several marine pipelines. The Fiber Optic Mooring project is aimed at developing a compliant cable section that enables fiber optic communications between the ocean surface to the seafloor, while also serving as the mooring
Seminar: Development of a solid state, dual pH and Total Alkalinity sensor for in situ monitoring of the seawater CO2 system
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesDr. Ellen Briggs Assistant Professor Department of Ocean & Resources Engineering University of Hawai‘i at Mānoa Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 Briggs is the lead developer of a novel, solid-state, reagentless sensor capable of rapid and near-simultaneous measurement (<60 s) of seawater pH and Total Alkalinity (At ). This prototype pH-A T sensor (Sea-pHAt ) utilizes ion sensitive field effect transistor (ISFET) pH sensing technology coupled with a coulometric diffusion titration (CDT) technique to additionally measure A T .
MS Plan B Defense: Estimating marine atmospheric boundary layer stratification with synthetic aperture radar data
Jonathan B. Chapman, PE Department of Ocean & Resources Engineering University of Hawai‘i at Mānoa Location Information **This defense will be held both in person (Kuykendall Hall 101) and over Zoom** Meeting ID: 914 1679 5922 Passcode: 808795 https://hawaii.zoom.us/j/91416795922 Uncertainties in the lower atmosphere’s stratification, which is the balance between buoyancy and shear, lead to large uncertainties when determining air-sea fluxes. Previous works show that synthetic aperture radar (SAR) sea surface roughness images show atmospheric phenomena that are known to be related to stratification. In this project, we hypothesize that physics-guided neural networks (PGNNs) can be used to estimate