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Session 4 Discussion Notes, Ocean Waves Workshop 2017 2017 University of New Orleans

Session 4 Discussion Notes, Ocean Waves Workshop 2017

Ocean Waves Workshop

No abstract provided.


Overview Of Open Source Codes To Assess Environmental Effects On Ocean Wave Farms, Chris Chartrand, Kelley Ruehl, Jesse Roberts, Sam McWilliams, Kaus Raghukumar, Aaron Porter, Cameron McNatt 2017 Sandia National Laboratories, Albuquerque, NM

Overview Of Open Source Codes To Assess Environmental Effects On Ocean Wave Farms, Chris Chartrand, Kelley Ruehl, Jesse Roberts, Sam Mcwilliams, Kaus Raghukumar, Aaron Porter, Cameron Mcnatt

Ocean Waves Workshop

The development of SNL-SWAN by Sandia National Laboratories (SNL) allows users to investigate the interaction between a WEC or WEC array and the wave environment. SNL-SWAN when coupled with a hydrodynamic and sediment transport model such as Delft3D, developed by Deltares Inc, allows for the direct investigation of WEC array effects on the physical environment (e.g. waves, currents, seabed) and the associated site ecology. Ongoing development of these tools has shown how the coupling of SNL-SWAN with Delft3D-Flow can quantify the interaction between device(s) and the hydrodynamic environment at a real-world site.


Wave Energy Converter Effects On The Nearshore Environment, Grace Chang, Craig Jones, Jason Magalen, Jesse Roberts 2017 Integral Consulting Inc., Santa Cruz, CA

Wave Energy Converter Effects On The Nearshore Environment, Grace Chang, Craig Jones, Jason Magalen, Jesse Roberts

Ocean Waves Workshop

This poster presents efforts to use predictive modeling tools to evaluate the impacts of Wave Energy Converter (WEC) arrays on nearshore processes, investigate effects of different WEC devices on wave propagation, examine wave propagation in the lee of a WEC array over different wave conditions, and accelerate the realization of commercial-scale wave power.


Wave-Measuring Performance Characteristics Of Spoondrift Spotter, K. Raghukumar, G. Chang, F. Spada, C. Jones, W. Gans, T. Janssen 2017 Integral Consulting Inc., Santa Cruz, CA

Wave-Measuring Performance Characteristics Of Spoondrift Spotter, K. Raghukumar, G. Chang, F. Spada, C. Jones, W. Gans, T. Janssen

Ocean Waves Workshop

Spoondrift Spotter represents a state-of-the-art wave measurement buoy developed by Spoondrift (www.spoondrift.co) and supported by funding from the Advanced Research Projects Agency – Energy (ARPA-E). A low-cost buoy platform like Spotter enables a range of new applications. For instance, coherent arrays of Spotters can support adaptive tuning of marine and hydrokinetic energy devices. In general, the availability of high-fidelity wave measurements can help support wave assessments for a variety of commercial, military, operational, academic, and recreational users.


Session 4 Presentation - Improved Coastal And Nearshore Wave Forecasting, Jeffrey Hanson, Robert Fratantonio 2017 AcuSea LLC, Kill Devil Hills, NC

Session 4 Presentation - Improved Coastal And Nearshore Wave Forecasting, Jeffrey Hanson, Robert Fratantonio

Ocean Waves Workshop

Accurate nearshore and coastal wave forecasts are essential for the protection of life and property as well as enhancing the economy through safe and efficient commercial activities. Modeling the nearshore environment has remained both computationally intensive and challenging due to the strong interaction of waves with the ocean bottom in shallow water environments. Here we develop a new wave system approach for nearshore wave modeling that addresses these issues. Wave systems result from specific wind forcing events on the ocean surface. This approach extends earlier work on wave system partitioning and tracking to assimilate coastal buoy observations into model output ...


Session 3 Discussion Notes, Ocean Waves Workshop 2017 2017 University of New Orleans

Session 3 Discussion Notes, Ocean Waves Workshop 2017

Ocean Waves Workshop

No abstract provided.


Real-Time Wave Assimilation Using Low-Cost Sensor Arrays (Extended Abstract), Pieter Smit, Tim Janssen, Cameron Dunning, Wheeler Grans 2017 Spoondrift Technologies, Half Moon Bay, CA

Real-Time Wave Assimilation Using Low-Cost Sensor Arrays (Extended Abstract), Pieter Smit, Tim Janssen, Cameron Dunning, Wheeler Grans

Ocean Waves Workshop

In this paper we present the underlying theory and principal results from a new real-time data-assimilation system in which we integrate a dense network of Spotters. The sensor network was deployed as part of the ONR Innershelf DRI experiment during the period from September 2017 till November 2017. The array consists of 18 Spotters, deployed seaward of Point Sal (California) along the 20-, 50- and 100-meter depth contours (Fig. 1). Each of these buoys provides estimates of the complete frequency-directional spectrum every hour. The wave spectra and directional moments are assimilated in real-time using an efficient backward raytracing algorithm to ...


Session 3 Presentation - An Overview Of Recent Wave Glider® Field Program, Pat Fitzpatrick, Yee Lau, Robert Moorhead, Adam Skarke, Daniel Merritt, Keith Kreider, Chris Brown, Ryan Carlon, Graham Hine, Teri Lampoudi, Alan Leonardi 2017 Mississippi State University

Session 3 Presentation - An Overview Of Recent Wave Glider® Field Program, Pat Fitzpatrick, Yee Lau, Robert Moorhead, Adam Skarke, Daniel Merritt, Keith Kreider, Chris Brown, Ryan Carlon, Graham Hine, Teri Lampoudi, Alan Leonardi

Ocean Waves Workshop

Developed by Liquid Robotics, Inc., Wave Gliders® (WGs) use wave energy for propulsion through the synergistic alternating thrust of wave action on the floating vehicle and mechanical wings 6 m below the vehicle. WGs provide dynamic environmental monitoring in the maritime environment with weeks-tomonths-long deployments using solar panels to power sensors, and satellite and cell communication channels for data delivery. Some data is transmitted real-time or in bulk at more infrequent intervals, while other data is archived on-board for extraction after a mission.

Example field programs include: wave, ocean, and PBL measurements in tropical cyclones; algae bloom monitoring; satellite ground ...


Session 2 Discussion Notes, Ocean Waves Workshop 2017 2017 University of New Orleans

Session 2 Discussion Notes, Ocean Waves Workshop 2017

Ocean Waves Workshop

No abstract provided.


Overview Of Open Source Codes To Assess Environmental Effects Of Ocean Wave Farms (Extended Abstract), Chris Chartrand, Kelley Ruehl, Jesse Roberts, Aaron Porter, Cameron McNatt 2017 Sandia National Laboratories, Albuquerque, NM

Overview Of Open Source Codes To Assess Environmental Effects Of Ocean Wave Farms (Extended Abstract), Chris Chartrand, Kelley Ruehl, Jesse Roberts, Aaron Porter, Cameron Mcnatt

Ocean Waves Workshop

The United States has a theoretical ocean wave energy resource potential of 1,594–2,640 TWh/year, enough to power between 143.5 and 237.6 million homes/year and contribute substantially to the United States’ energy portfolio [1]. However, wave energy converters (WECs) are currently in the early stages of research and development at low technology readiness levels. Open ocean deployment data is from demonstration-scale projects, not from utility-scale deployments. As a result, researchers, developers, and regulators rely heavily on numerical models to understand the environmental effects of wave farms.

Preliminary numerical studies have demonstrated that small-scale deployments ...


Session 2 Presentation - A New Generation Of Spectral Wave Models, Don Resio, Dorukan Ardag, C. Reid Nichols 2017 University of North Florida, Jacksonville, FL

Session 2 Presentation - A New Generation Of Spectral Wave Models, Don Resio, Dorukan Ardag, C. Reid Nichols

Ocean Waves Workshop

Over the last decade, considerable effort has been spent on the evaluation of operational wave models such as the WAM, WAVEWATCH III, and SWAN thirdgeneration (3G) model. Most recent effort has focused on a “wholistic” approach to model evaluation, rather than on related comparisons directly to physics-based processes. In such an approach, model coefficients are tuned to maximize the global fit to integrated wave parameters such as wave height, mean/peak period, mean direction and directional spreading [1]. However, these coefficients do not ensure a universal “best-fit” to observation. Also, comparisons to spectra are omitted from the model evaluations since ...


Session 1 Discussion Notes, Ocean Waves Workshop 2017 2017 University of New Orleans

Session 1 Discussion Notes, Ocean Waves Workshop 2017

Ocean Waves Workshop

No abstract provided.


Session 1 Paper - Contemporary Expeditionary Warfare For Scientists And Engineers, C. Reid Nichols 2017 Marine Information Resources Corporation, Ellicott City, MD

Session 1 Paper - Contemporary Expeditionary Warfare For Scientists And Engineers, C. Reid Nichols

Ocean Waves Workshop

Expeditionary forces from many countries have deployed to mitigate the effects of natural disasters and human conflicts. Approaches are usually linked to the nation’s maritime strategy. Expeditionary forces provide rapid response to man-made disruptions such as mass casualties by terrorists, vessel hijackings by pirates, murders by drug cartels, and nuclear accidents. Recent examples include Humanitarian Assistance/Disaster Response (HA/DR) and Non Combatant Evacuation Operations (NEO). HA/DR type missions have been planned and executed to mitigate the effects of catastrophic tropical cyclones, flooding, wild fires, and tsunami. NEO missions are focused on the evacuation of a nation’s ...


A Modeling System For Integral Simulation Of Propagation Of Ocean Surge And Wave And Their Impinging On Coastal Structure (Extended Abstract), Ke Qu, Hansong Tang, Anil Agrawal 2017 Department of Civil Engineering, City College of New York, CUNY, New York, NY

A Modeling System For Integral Simulation Of Propagation Of Ocean Surge And Wave And Their Impinging On Coastal Structure (Extended Abstract), Ke Qu, Hansong Tang, Anil Agrawal

Ocean Waves Workshop

Now it has become necessary to develop our capability to directly simulate many emerging coastal ocean flow and wave problems. These flow problems present a common challenge to our modeling capability; they involve multiphysics phenomena spanning a vast range of spatial and temporal scales, however, so far essentially we have no methods and computer software to directly and integrally simulate these phenomena. Now it has become necessary for us to develop new capability to model them in efficient ways and high-fidelity. Towards this goal, we have developed a brand new, unprecedented modeling system that is able to directly evaluate many ...


Session 1 Presentation - Use Of Offshore Energy Facilities As Deepwater Ocean Observing Platforms, Jeffrey Morin, Pak Leung, Ruth Mullins Perry, Eoin Howlett, Armen-Sjur Minassian, Rudy Poulos 2017 RPS - Ocean Science Division, Houston, TX

Session 1 Presentation - Use Of Offshore Energy Facilities As Deepwater Ocean Observing Platforms, Jeffrey Morin, Pak Leung, Ruth Mullins Perry, Eoin Howlett, Armen-Sjur Minassian, Rudy Poulos

Ocean Waves Workshop

Wave measurement is one of the major components for any ocean observation program, however, it is also the most challenging one due to its complexity. For Oil & Gas community, wave data is often used for platform stability calculation, operational decision making, structure fatigue analysis, and engineering design criteria.


Wavemaker Improvements At The University Of New Orleans Towing Tank, Ryan D. Thiel 2017 University of New Orleans

Wavemaker Improvements At The University Of New Orleans Towing Tank, Ryan D. Thiel

Ocean Waves Workshop

No abstract provided.


Ecological And Oceanographic Influences On Leatherback Turtle Behavior And Scyphozoan Jellyfish Distributions In The Gulf Of Mexico, Katrina Aleksa 2017 The University of Southern Mississippi

Ecological And Oceanographic Influences On Leatherback Turtle Behavior And Scyphozoan Jellyfish Distributions In The Gulf Of Mexico, Katrina Aleksa

Dissertations

Leatherback turtles (Dermochelys coriacea) are a wide-ranging, oceanic species that feed exclusively on gelatinous zooplankton. Leatherback have been spotted in the Gulf of Mexico (GoM) for several decades and consistently had a high level of interactions with longline fisheries. However, no quantitative studies have been performed to address the spatiotemporal distribution of these turtles in the GoM. This research determines 1) leatherback movements and high-use areas in the GoM, 2) their association with oceanographic features, 3) the distribution and density of two abundant medusae in the northern GoM and any association with biophysical parameters, and 4) the body composition and ...


The Utility Of Foraminifera In Documenting Sediment Provenance For Overwash Deposits: A Case Study Using Sediments Deposited By Tropical Cyclone Pam In Vanuatu, thomas kosciuch 2017 The University of Southern Mississippi

The Utility Of Foraminifera In Documenting Sediment Provenance For Overwash Deposits: A Case Study Using Sediments Deposited By Tropical Cyclone Pam In Vanuatu, Thomas Kosciuch

Master's Theses

Tropical cyclone inundation is a major threat to the highly exposed islands of the South Pacific. This vulnerability was highlighted in March 2015 when Tropical Cyclone (TC) Pam made landfall on Vanuatu as a Category 5 storm, impacting coastlines with storm surges that produced high water marks up to 7 m above MSL and deposited sediments up to 400 m inland. We examined the foraminiferal assemblages contained within TC Pam sediments at two locations in Vanuatu: a mixed-carbonate embayment (Manuro), and a volcaniclastic beach (Port Resolution Bay; PRB). At Manuro, the TC Pam sediments were up to 10 cm thick ...


3d Seismic Interpretation Of A Plio-Pleistocene Mass Transport Deposit In The Deepwater Taranaki Basin Of New Zealand, Francisco Jose Rusconi 2017 University of Arkansas, Fayetteville

3d Seismic Interpretation Of A Plio-Pleistocene Mass Transport Deposit In The Deepwater Taranaki Basin Of New Zealand, Francisco Jose Rusconi

Theses and Dissertations

A series of Plio-Pleistocene mass transport deposits (MTD) have been identified in the deepwater Taranaki Basin, in New Zealand, using the Romney 3D seismic survey, which covers an area of approximately 2000 km2. One of these MTDs has been chosen for description and interpretation based on high confidence mapping of its boundary surfaces. The deposit exhibits an array of interesting features similar to those documented by researchers elsewhere plus a unique basal feature unlike those previously observed. The basal shear surface exhibits erosional features such as grooves, “monkey fingers”, and glide tracks. Internally, the MTD is typically characterized by low ...


The Development And Proliferation Of Summer Algal Blooms In The Oligo/Poly-Haline Portion Of The Chesapeake Bay - Observational And Numerical Modeling Studies, Zhengui Wang 2017 College of William and Mary - Virginia Institute of Marine Science

The Development And Proliferation Of Summer Algal Blooms In The Oligo/Poly-Haline Portion Of The Chesapeake Bay - Observational And Numerical Modeling Studies, Zhengui Wang

Dissertations, Theses, and Masters Projects

Algal blooms occur annually in many parts of the Chesapeake Bay. The causes of algal blooms are complex and can be different in different regions. In this study, we will conduct data analysis for the observed data and adopt various methods to investigate algal bloom phenomenon in three separate regions in the oligo/poly-haline portion of the Bay. Chapter 1 provides a general introduction of the algal bloom research in the Chesapeake Bay. In Chapter 2, an observational analysis and a numerical study on the algal blooms in Back River were conducted. A hypothesis was made that high pH can ...


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