The Teledyne Marine Channel

Studying Thwaites Glacier with a large diameter AUV

Tue, 01 Dec 2020 10:40:44 GMT

Guest: Peter King, University of Tasmania

In this fall series of podcasts, we introduce some of the winners and general entrants from the 2020 Teledyne Marine Photo Contest. Teledyne's annual Photo/ Data Contest concluded with over 80 qualified submissions that helped the company donate over $1200 to Save the Children as part of a charitable giving campaign.

In this episode we talk to Peter King, Facility Manager in the Autonomous Systems Maritime Laboratory at the University of Tasmania and one of our contestants this year in our Teledyne Marine Photo Contest. Peter submitted two great photos, one of his team and their AUV, Nupiri Muka, which was outfitted with two Teledyne RD Instruments DVLs, just after recovery and another pre-deployment with the glacier as a backdrop. Peter explains the photo, how the RD Instruments DVLs aided their research, and a bit about their work as part of the Antarctic Gateway Partnership.

To learn more about the University of Tasmania and the Antarctic Gateway on Twitter @Ant_Gateway and on Facebook at www.facebook.com/antarcticgateway. You can also keep pace with Peter King and his latest adventures by following @AUVPeter on Twitter.

If you have any questions or comments about this show you can email host Melissa Rossi at MarineTechTalk@teledyne.com.

Listen to more Teledyne Marine Tech talks >

Computing Discharge in Real Time using the Q-Track Automated Continuous...

Mon, 03 Feb 2020 09:28:05 GMT

The Central Midwest Water Science Center has developed, installed, and operated an automatic system for computing discharge. The Q-Track system, as it is known, consists of a TRDI acoustic Doppler velocity meter (ADVM) attached to a carriage that traverses vertically on a track assembly on the side of the canal. The system is controlled by a data logger and computes discharge in real time. The Q-Track system is installed at a site that is the subject of much litigation and for which the discharge is very unsteady. The Q-Track system is being evaluated as an alternative to 'standard' approaches used by the USGS to compute continuous discharge records at this location. This talk will present the results of an evaluation of two methods for computing real-time discharge using the Q-Track system, the mid-section method and the horizontal slice method. The methods for computing discharge will be presented, along with the assumptions and limitations inherent in the method. The discharges computed using Q-Track are compared to the “official” discharge record at the site, which makes use of the index-velocity method.

Presented by:

Kevin Oberg
USGS

Measured Flow Disturbance Around Different ADCPs and Mounts

Thu, 23 Jan 2020 09:57:05 GMT

NVE has mesured flow disturbance around various ADCPs and mounts/floats/trimarans to try to confirm or dispute previous studies by OSW, USGS. The background/reason for doing this is that after starting to use the OSW, USGS extrap/qrev software and alarming number of measurements show tat the vertical velocity distribution shall be constant/no-slip, and not power/power. The method has been to drive long reaches on a still lake and to compare the water velocities close to the instruments by the velocities at some depth. If no flow disturbance, they will be the same. If disturbed flow, there will be a difference.

Presented by;
Kristoffer Florvaag-Dybvik
NVE (Norwegian Water Resources and Energy Directorate)

River sediment transport monitoring by means of H-ADCP.

Mon, 17 Jun 2019 08:53:50 GMT

Monitoring stations in rivers and water courses are an important mean to obtain critical data about the different variables that play a role in the hydrodynamics and ecological processes. This is especially true during rough weather conditions when direct observations are not possible and even dangerous. A technique to determine the suspended sediment transport by means of fixed ADCPs at the side of a river channel (i.e., H-ADCP) is here presented. This technique relies on the Channel Master by Teledyne-RDI which continuously measures water velocity and echo intensity profiles along an horizontal alignment, these measurements are then transmitted to a remote server via GSM. In addition the proposed technique is based on an acoustic method to investigate poorly sorted sediment in the spectrum ranging from clay to fine sand. This combines the measurement of sound attenuation and backscatter to determine instrumental sensitivity to actual matter suspended in the horizontal alignment, thus relaxing the need of frequent calibrations to account for changes in the backscatter return not ascribable to a change in suspended sediment concentration, SSC. Last but not least a Matlab GUI was developed for the acoustic method implementation-validation and its coupling with discharge assessment using water velocity profiles from the Channel Master.

The overall technique was applied in two very different case studies: i) the Devoll river in Albania that is a typical mountain stream with flow velocity and SSC larger than 5 m/s and 10 g/l during floods, respectively, in this case the monitoring serves hydropower industry; ii) the Secchia river where the observed peaks were close to 1.5 m/s and 2 g/l, this is the case of an embanked stream flowing in one of the most populous and heavily built areas of Italy where the monitoring station serves the prediction of sediments deposition and erosion close to existing infrastructures (e.g., bridge and levee).

Presenter:
Massimo Guerrero
LIDR-DICAM, Università di Bologna

ADCP Data QA: Overview to Advanced (Oceanographic)

Fri, 15 Mar 2019 09:02:04 GMT

Outline

Overview of the ADCP Data Types
Methodology for Data Reviewing: Key Data Quality Indicators
Review of Example Data Sets from WH and Sentinel V ADCPs – Learn Data Displays: 2D Profiles, 2D Time Series, 3D Profiles, and 3D Time Series

Presenter:
Darryl Symonds
Teledyne Marine

Vessel Mounted ADCP: Installation Background, FAQ’s, and a case study of an...

Fri, 15 Mar 2019 08:59:24 GMT

Outline

Go to: Vessel Mounted ADCP Requirements >
Go to: TRDI System Package Overview >
Go to: Example Vessels and Installations >
Go to: Block Diagram of ADCP Installations >
Go to: Do’s and Don’ts of ADCP Installation (Frequently Asked Questions) >
Go to: Vessel Mounted Data Acquisition Software (VMDAS) >
Go to: 2 Stories of ADCP Vessel Mounted Data Collection >

Presenter:
Darryl Symonds
Teledyne Marine

An experience in using ADCP “Rio Grande 600 kHz” for investigations of the...

Wed, 09 Jan 2019 13:17:21 GMT

During several expedition seasons, starting from 2003, TRD Instruments- Europe provided us with ADCP Workhouse “Rio Grander 600 kHz” gratuitously supporting our studies at shelves of Russian seas. The first studies showed that the instrument designed for measuring sea currents can really have a much broader spectrum of functions. Primarily, it is true for measuring the intensity of the back-scattered signal, that feature allowing one to monitor different processes in the water bulk. In combination with simultaneously monitoring the background current, the ADCP becomes an exceptional instrument offering unreachable earlier possibilities in studying the processes in coastal regions of seas.

Presenter: Lisa Khimchenko
Repaired by: Andrey Serebryany, Shirshov Institute of Oceanology

Woods Hole Group’s (formerly Horizon Marine's) FAST Eddy Underway ADCP...

Mon, 03 Dec 2018 09:04:31 GMT

Woods Hole Group Inc. (formerly Horizon Marine, Inc. (HMI)) provides oceanographic services specifically tailored to the offshore energy industry. Our services are designed to assist with planning safe and efficient operations to minimize costly downtime caused by challenging ocean currents. HMI's EddyWatch program concentrates on the location and migration of strong ocean currents that are characteristic of the Loop Current and associated anticyclonic (warm core) eddies, particularly in the deep-water lease blocks of the northern Gulf of Mexico. To provide enhanced services and site-specific monitoring and forecasting, HMI developed the FAST Eddy real-time, automated, self-contained, ADCP data acquisition system that may be installed both on Offshore Supply Vessels (OSVs) and Autonomous Surface Vehicles (ASVs). Clients using FAST Eddy for fine-scale monitoring and forecasting problematic currents have found that the service helped mitigate downtime and associated costs during critical operations. Our presentation will describe the technology and techniques of deployment and surveying used by HMI to assist in effectively managing a client's resources and limit potential downtime due to ocean currents. This presentation will touch upon our experiences; past present, and future.

Presented by: Federico Alvarez, HMI.

Monitoring Currents with ADCPs on Wave Gliders

Thu, 29 Nov 2018 08:30:57 GMT

This presentation will discuss how ADCPs on Wave Gliders provide a viable and flexible way to get critical upper-ocean current data. ADCPs on Wave Gliders provide a more efficient way to get key oceanographic data. Operating unmanned vehicle is much less costly than operating ships. Carrying ADCPs on these unmanned vehicles provides a flexible and economical means for monitoring upper-ocean currents. Liquid Robotics Wave Gliders have demonstrated the power of this approach with deployments in locations and conditions around the world.

For scientific studies, Wave Gliders carrying ADCPs can simplify exploring upper-ocean responses to atmosphere forcing. This tool can also show current circulation patterns in sparsely-observed oceanic regions. Where currents are weaker, Wave Gliders with ADCPs can replace ships in some types of recurring surveys. As well as returning detailed and extensive data sets, this approach reduces costs and resources for operators and provides flexibility (e.g., changing profiles based on real-time samples). Examples include fisheries management, monitoring the marine environment, and providing indicators for El Nino and climate change.

Wave Gliders with ADCPs are likely to play an enhanced role in operational support for industry. They provide a unique means to see and deliver information about the underwater situation. This approach can improve safety and efficiency as well as reduce risks. It can also provide warnings where industrial activity overlaps with sensitive marine life and environments.

By: Ryan Carlon, Liquid Robotics Inc

Robots Talking to Robots: Using Acoustic Modems to Connect Ocean Systems

Thu, 29 Nov 2018 08:29:56 GMT

The Liquid Robotics Wave Glider has demonstrated great success as a host platform for acoustic modems. Numerous customer missions have employed these systems to provide seafloor to surface connectivity. In this presentation recent results will be presented. Customer experiences in oceanographic research will highlight the role of Wave Gliders with acoustic modems to:

• Locate and track underwater assets more efficiently and without a ship

• Act as a communications relay, allowing underwater assets to transfer data quickly and in near real-time

• Follow submerged autonomous underwater vehicle (AUVs) for in situ analysis of a drifting water mass

Examples of undersea assets supported will include fixed seafloor seismic research nodes, free swimming long-range AUVs and a seafloor crawling benthic rover. In addition to telemetry certain missions also make use of acoustic positioning to support undersea assets.

This presentation will describe the applications and integration of Teledyne acoustic systems on Wave Gliders.

By: Ryan Carlon, Liquid Robotics Inc

Hydroacoustics in the USGS - Twenty-five years of Innovation

Wed, 28 Nov 2018 09:39:51 GMT

Acoustic instruments and methods for streamflow measurements first began to be integrated into the USGS streamgaging program in 1992, shortly after the TRDI Broadband Acoustic Doppler Current Profiler (ADCP) was released. Although these instruments were adopted especially on large rivers, the usage of ADCPs dramatically increased with the introduction of the Rio Grande ADCPs in 1997. Since then, that trend has continued, such that 97% of all non-wading discharge measurements are made with ADCPs. In 2002, the USGS began working with SonTek to adapt the Acoustic Doppler Velocimeter (ADV) – a lab instrument – for field applications and discharge measurements. In 2016, 84% of all discharge measurements were made with an acoustic instrument, corresponding to 68,800 discharge measurements.

The implementation and adaptation of hydroacoustic instruments and methods was successful for a number of reasons. Firstly, the USGS, Office of Surface Water (OSW) and the Hydroacoustics Work Group (HaWG) have worked cooperatively with manufacturers to see that changes were made to the instruments and software that minimize bias, improve efficiencies, and minimize user errors. Secondly, OSW and the HaWG have emphasized comprehensive and timely training of hydrographers. Thirdly, OSW has worked diligently to explore better methods, better software, and new applications for acoustic methods. As examples of the latter, we have developed and refined the discharge computation methods and software (QRev software) and developed the Velocity Mapping Toolbox. We are now working on improving methods for data exchange and interoperability and in developing operational tools for estimating discharge measurement uncertainty. Lastly, OSW and the HaWG have placed a heavy emphasis on field support by responding to telephone and email requests for assistance, sometime involving deployment of OSW personnel within 24 hours of the request.

Presentation by: Acoustic instruments and methods for streamflow measurements first began to be integrated into the USGS streamgaging program in 1992, shortly after the TRDI Broadband Acoustic Doppler Current Profiler (ADCP) was released. Although these instruments were adopted especially on large rivers, the usage of ADCPs dramatically increased with the introduction of the Rio Grande ADCPs in 1997. Since then, that trend has continued, such that 97% of all non-wading discharge measurements are made with ADCPs. In 2002, the USGS began working with SonTek to adapt the Acoustic Doppler Velocimeter (ADV) – a lab instrument – for field applications and discharge measurements. In 2016, 84% of all discharge measurements were made with an acoustic instrument, corresponding to 68,800 discharge measurements.

The implementation and adaptation of hydroacoustic instruments and methods was successful for a number of reasons. Firstly, the USGS, Office of Surface Water (OSW) and the Hydroacoustics Work Group (HaWG) have worked cooperatively with manufacturers to see that changes were made to the instruments and software that minimize bias, improve efficiencies, and minimize user errors. Secondly, OSW and the HaWG have emphasized comprehensive and timely training of hydrographers. Thirdly, OSW has worked diligently to explore better methods, better software, and new applications for acoustic methods. As examples of the latter, we have developed and refined the discharge computation methods and software (QRev software) and developed the Velocity Mapping Toolbox. We are now working on improving methods for data exchange and interoperability and in developing operational tools for estimating discharge measurement uncertainty. Lastly, OSW and the HaWG have placed a heavy emphasis on field support by responding to telephone and email requests for assistance, sometime involving deployment of OSW personnel within 24 hours of the request.

Presentation by: Kevin Oberg, USGS

Expanding Accurate and Efficient Use o f ADCP Data through the Development of...

Thu, 22 Nov 2018 08:23:03 GMT

*Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

The use of acoustic Doppler current profilers (ADCPs) for measuring streamflow and stream velocities has become common in most hydrologic agencies and the private sector. Instruments for performing these measurements are available from multiple manufacturers; however, the supplied software used to collect and process the data do not use consistent algorithms. Similarly, the data are not stored in a common format and the format of the original unprocessed data is not always made public, limiting the use of the data.

The Office of Management and Budget issued memorandum M-13-13 on May 9, 2013 stating, “Specifically, this Memorandum requires agencies to collect or create information in a way that supports downstream information processing and dissemination activities." This and associated directives require the Federal Government to transform data and information into useable and accessible formats.
The U.S. Geological Survey, Office of Surface Water has developed software to post-process moving-boat ADCP measurements to improve quality and apply consistent algorithms independent of the instrument manufacturer and software used to collect the data. This initial development is serving as a starting point for establishing international standards for both processing algorithms and data file formats. The establishment of standard processing algorithms and the development of a data file format using an existing self-documenting format such as NetCDF will enable consistent, efficient, and expanded use of the data independent of the ADCP used to collect the data. Developing these international standards will require the cooperation of other federal and international agencies and equipment manufacturers.

Presented by:

David Mueller, USGS

Seasonal to Decadal Variability in the Upper Ocean Scattering Layer in Drake...

Thu, 01 Feb 2018 10:00:37 GMT

The surface shoaling of nutrient-rich waters poleward across the Antarctic Circumpolar Current is responsible for the elevated productivity of the Southern Ocean. Over the last half century, the Southern Ocean has been warming at a faster rate than the global ocean as a whole. In particular, the Antarctic Peninsula region has undergone rapid atmospheric warming, significant glacial retreat and a decrease in seasonal sea ice extent, impacting krill and its predators. Improving knowledge of the Southern Ocean is a high priority for understanding the effects of climate change, but the harsh environment poses substantial observational challenges.

The U.S. Antarctic Research and Supply Vessel Laurence M. Gould crosses Drake Passage 2-4 times per month in all seasons, collecting underway data on transits between Punta Arenas, Chile and Palmer Station, Antarctica. High-resolution measurements of upper ocean temperature, salinity, velocity and acoustic backscatter, along with concurrent meteorological, surface water CO2 and nutrient measurements have been routinely acquired since the late 1990s. This study makes use of 238 acoustic Doppler current profiler (ADCP) transects collected over a 12-year period to remotely sense the characteristics of the near-surface scattering layer, which at 153.6 kHz is dominated by macrozooplankton. Although the primary use of the shipboard ADCP is to measure ocean currents, the measured acoustic backscatter has provided valuable insights into the depth distributions, vertical migration behaviors and even life cycles of dominant biological scatterers. Diel vertical migration and a well defined annual cycle are observed, consistent with krill behavior. Significant geographic variations are present on both seasonal and interannual time scales. Interannual variability is linked to two main climate modes, the El Niño-Southern Oscillation and the Southern Annular Mode, as well as to variations in seasonal sea ice extent. Limitations of the present study and proposed sampling to address them will also be discussed.

Presented by:

Dr. Teresa K. Chereskin
Scripps Institution of Oceanography at the University of California, San Diego

Teledyne Marine Defense & Security Overview - TMTW17

Wed, 31 Jan 2018 09:28:59 GMT

Introduction to Teledyne Marine's Defense and Security solutions and capabilities, presented at TMTW17.

Teledyne Marine Oceanographic Research Overview - TMTW17

Mon, 29 Jan 2018 09:51:56 GMT

Introduction to Teledyne Marine's Oceanographic Research technology and capabilities, presented at TMTW17.

Measurements for site description and response of farmed fish and equipment...

Sat, 06 Jan 2018 12:23:04 GMT

Abstract:
The salmon farming industry in the Faroe Islands is currently utilizing some of the most exposed sites for aquaculture in the world. Up to now, waveheights of >5m Hsig and tidal currents >1m/s have been measured at the sites.

To be able to provide good advice on farming in such extreme places, proper description of the physical environment is necessary and good knowledge about the capabilities of the farming equipment and the farmed fish in such an environment. For this work we are always on the lookout for the best equipment for the job. We have a number of workhorse sentinels that we use with good results, and have tested the SentinelV and the Citadel CTD as well through the academic product grant.

For site characterization we generally first describe the regional tidal currents using a boat mounted ADCP. From these results a layout of the aquaculture site is proposed and an bottom mounted ADCP is used for obtaining long term measurements of waves and vertical current profile for creating statistics on waves and currents.

Measurements at highly exposed sites have revealed features that might not be described by the standard measurements performed for new salmon farming sites, and work is initiated to define new protocols.

The response of equipment and behavior of the farmed fish is also unknown for highly exposed sites. Various measurement methods are employed together with ADCP's and CTD's to bring more information forward on these subjects.

Examples of results from such measurements will be presented.

Presented by:

Øystein Patursson
Fiskaaling

Advanced Techniques for Rapidly Mapping 3D Spatial Velocities for Tidal...

Thu, 04 Jan 2018 09:29:12 GMT

Abstract:

Join us as we uncover the first approved permanent Tidal Test Facility in the United States.

RDI and WaterCube, LLC partnered up with the Marine Renewable Collaborative to participate in bringing together the latest technologies to rapidly produce 3D spatial views of velocity and bathymetry within the Cape Cod Canal to gain approval of the Bourne Tidal Test Facility. Utilizing the most advanced instrumentation by RDI, a remote-boat by Oceanscience for data collection and WaterCube's innovative new data processing engine, the Marine Renewable Collaborative were able to showcase not only the power potential of the area but also visualize and design the ideal turbine placement which will harness the most potential for turbine manufacturers for years to come. The Marine Renewable Collaborative just received approval from The Army Corp of Engineers to begin installation of the testing facility in November of 2017.

Come see how these powerful views opened the eyes of many to the potential within Cape Cod. REAL 3D NEVER LOOKED SO GOOD!

Presented by:

Jeff Den Herder - in collaboration with WaterCube, LLC
Teledyne RD Instruments

Use of Acoustic Techniques for the Determination of Net Sediment Transport...

Tue, 05 Dec 2017 09:33:21 GMT

Presenter:

David Williams
Australian Institute of Marine Science

Abstract

The Marine Supply Base channel in Darwin Harbour, Northern Territory Australia provides access to berthing and loading at East Arm wharf for vessels that support the offshore energy industry.

Sedimentation in the channel due to complex currents in the area is reducing navigational efficiency and safety.

A combination of multi-beam echo sounder, utilising an Odom MB1 and Acoustic Doppler Current Profiler, using a network of TRDI Workshorse and Sentinel V, surveys were conducted over a 12 month period encompassing both dry and wet seasons. The MBES surveys mapped the extent of the MSB channel and the East Arm sandbar adjacent to the channel. Tidal current patterns determined from the ADCP surveys show that tidal currents in the area are highly variable and are stronger in the ebb tide direction except at the entrance to the navigation channel. Tidal current are more variable in the flood tide direction at all remaining sites along the channel. The strength and direction of the tidal currents indicate that sediment movement is along the channel toward the deeper seaward navigation channel.

Fine sediments have deposited in the MSB berthing area slightly reducing the volume of the berthing pocket and also depositing toward the end of the channel. An annual sediment deposition rate of 100 mm over the berth area was determined via observations and modelling.

Non-cohesive sand transport modelling, configured using data from the MBES and ADCP surveys, has indicated slow movement of the sandbar in a dominantly south west direction at between 100 – 200 mm per month. Fine sediment modelling indicates deposition in the MSB berth area of 20 – 50 mm/year under average conditions.

Modelling indicates that if the MSB channel was realigned to be straighter the current directions would be more regular assisting navigation. Sediment accumulation would not present a major issue if the majority of the East Arm sandbar was dredged.

Perspectives on the State of Ocean Science

Tue, 14 Nov 2017 09:51:10 GMT

Keynote presentation by Margaret Leinen

The value and role of ocean science and innovation increasingly has been the focus of both international and domestic forums on climate science, sustainability, and defense. Now in its second century of exploration and research, UC San Diego's Scripps Institution of Oceanography is rising to meet new challenges to understand and protect the planet, through interdisciplinary and cross-sector collaborations and a continued focus on developing innovative technology to observe the planet.

Scripps shares its science at international forums such as the United Nations ocean and climate conferences to advise, contextualize and strengthen the efforts of nations, NGO's and policymakers that set and meet standards for sustainable use of the oceans. The United States Navy is also in the midst of assessing the global state of ocean science and technology via Task Force Ocean, and has engaged US academic institutions including Scripps to ensure cutting-edge ocean science is applied to its oceanographic infrastructure, technologies, and technical workforce so that the Navy maintains its global competitive advantage.

In her keynote, Dr. Margaret Leinen will describe these international forums, Scripps role, how Scripps scientists are innovating to meet these global demands in ocean science and technology, and the state-of-the-art research facilities, centers, and education that will shape the future of ocean and climate science.

The Next Great Odyssey of Human Endeavour Exploring the Deep Ocean

Thu, 09 Nov 2017 14:55:25 GMT

Keynote presentation by Oliver Steeds

Humankind is poised to make the next giant leap – into the deep ocean. We now have the technology available to us to discover more of our planet in the next 10 years than we have in the last 100,000.
Throughout human history, exploration has always driven our progress. Lief Ericson's journey to North America (1001 AD), the discovery of the New World (1490s), Magellan's first circumnavigation (1519) and space exploration (1957-) have all pushed back the frontiers of our knowledge, unlocking immense opportunity and changing our relationship to our planet and ourselves.
But since 1969, we've been looking up when we should have been looking down. The most important part of our planet, the deep ocean, remains the least known part of our planet.
The ocean is the heart of our planet. It's 99% of the planet's biosphere[1], regulates our atmosphere and climate and produces 50% of the oxygen we breath[2]. It captures heat and carbon dioxide which dramatically reduces global warming and provides a primary source of protein for 3 billion people[3]. The ocean is everybody's business. How it changes affects us all. The problem is that we don't know how the deep ocean functions, how healthy it is, how resilient it is and how the development of a sustainable blue economy can drive our growth.
The ocean remains the last great unknown frontier on our planet. We've only biologically sampled 0.0001%[4] and mapped an area equivalent the size of Tasmania to the same kind of detail that we have mapped the entire orbs of the Moon and Mars[5].
From Autonomous Underwater Vehicles (AUVs) to Remotely Operated Vehicles (ROVs), from seabed mapping systems and chemical sensors to the initial library of DNA sequences of marine animals, technological developments now unlock extraordinary new research capabilities. We now have the ability to discover more of our planet in the next 10 years than the last 100,000 of human history.
New areas of economic activity such as renewable energy and marine mining are on the horizon. Millions of new species are to be discovered that can propel human medicine. Resources to be unearthed that will drive our sustainable economic development. Even the origins of life on Planet Earth are to be found.
To engage the world in our all of our work, we should be looking to the space community to learn how to improve our story-telling – engaging our audiences with stories that are positive, forward looking and about a brighter future; that are Mission based and trigger the imagination, communicating danger and building on narratives of exceptionalism, patriotism, exploration and the collective human achievement.
Together, as an industry, we are already leading the exploration of the deep ocean, the last, great unknown frontier on Planet Earth.
The Apollo Missions, polar exploration, Jacques Cousteau's adventures, even Felix Baumgartner's space jump captivated the world with their human drama, battles against adversity, and above all, the unknown. We need the unknown. It is the sense of mystery that gives us imagination and makes us human. Our work is the next positive epic story of human endeavor that can inspire humanity.

SOURCES:
[1] http://www.un.org/sustainabledevelopment/oceans/
[2] http://earthsky.org/earth/how-much-do-oceans-add-to-worlds-oxygen
[3] http://www.worldwildlife.org/industries/sustainable-seafood
[4] www.marineboard.eu/file/265/download?token=J5hokhHB
[5] http://www.motherearthnews.com/nature-and-environment/nature/fun-surprising-facts-about-the-oceans.a...
[6] http://www.earthsurfaceprocesses.com/3c-E-MassExtn.html

TMTW 2015: NOAA’s Recent Field Testing of the Teledyne RDI Sentinel V ADCP

Wed, 03 May 2017 14:19:39 GMT

NOAA’s Recent Field Testing of the Teledyne RDI Sentinel V ADCP
Presenter: Nathan Holcomb NOAA

The National Oceanic and Atmospheric Administration’s (NOAA) Center for Operational Oceanographic Products and Services (CO-OPS) currently maintains 24 Physical Oceanographic Real-Time System (PORTS®) observatories throughout the United States coastal regions. These systems provide real-time oceanographic and meteorological information to support safe and efficient navigation. One important observation included in the suite of PORTS data products is ocean currents. CO-OPS also measures currents during non-real-time surveys under the Nation Current Observation Program (NCOP); these data are used to generate tidal current predictions. To ensure that its networks operate in the most efficient and accurate way possible, CO-OPS invests in testing of latest commercially available oceanographic instrumentation. CO-OPS uses a variety of TRDI Workhorse ADCPs throughout PORTS and NCOP systems. Motivated by new developments and products offered by TRDI, CO-OPS procured a 500 kHz Sentinel V for initial testing. To date, a series of controlled boat tow tests have been completed along with a short field test in the South Chesapeake Bay (October’14). The primary objective is to test current measurement performance for CO-OPS’ applications; a secondary objective is to evaluate wave measurement capability. During the Chesapeake Bay test the Sentitnel V was deployed in a bottom mount nearby a TRDI WorkHorse, Nortek AWAC, and TriAXYS wave buoy. Water depth at the site is approximately 15 m and currents are predominately tidal, ranging approximately 0-2.5 knots on a daily basis. A summary of the results from both the boat tow and a Chesapeake Bay tests will be presented.

TMTW 2015: Three Month Continuous Measurement of Waves off the West Coast of...

Wed, 03 May 2017 14:18:31 GMT

Three Month Continuous Measurement of Waves off the West Coast of Ireland During the Winter of 2015 University College Dublin
Presenter: Frederic Dias University College Dublin

The WAVEMEASUREMENT project is linked to the ERC Advanced Grant MULTIWAVE (www.ercmultiwave.eu). MULTIWAVE is an interdisciplinary project focusing on uncovering the fundamental mechanisms underlying the physics of rogue waves. The potential to improve the understanding of ocean rogue waves is hindered by the lack of reliability of measurements of extreme ocean waves. More specifically, the quality of the data and the sophistication of data analysis of existing measurements from conventional buoy sensors are still unsatisfactory for the detailed study of rogue waves. The key idea of WAVEMEASUREMENT is to implement rigorous calibration tests of wave measurement in an extreme environment.

As a test site, the Killard Point area (west coast of Ireland) has been chosen. The overall area is characterised by a mean tide of about 5m which can reach maxima of about 5.7m.

Because the experiment was aimed at defining the quality of the currently available wave measurements under extreme conditions, a Sentinel V ADCP and a Waverider buoy were considered for comparison. The ADCP was deployed on 9 February 2015 in the Killard Point area at 39m depth, at exact location 52° 47.696’N, 009° 34.149’W and recovered on 11 June 2015. The deployment and recovery were carried out by TechWorks Marine. Data processing has started and there are 80 days of continuous data. Unfortunately the Waverider broke and was not replaced.