| Wave-Powered Unmanned Surface Vehicle as a Station-Keeping Gateway Node for Undersea Distributed Networks |
Sep 2012 |
62 pages |
| Authors:
Timothy W Rochholz; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
 | By analyzing data from a long-duration deployment of four wave-powered unmanned surface vehicles called Wave Gliders, an assessment of operating characteristics informs the potential utility of the Wave Glider in an undersea distributed network as a replacement for a moored communications gateway buoy. Specifically, the wave-powered propulsion system is analyzed to assess endurance, operability, and application in an underwater distributed network as the gateway node. The results of the study ... |
|
| Handbook for Marine Geotechnical Engineering |
Feb 2012 |
457 pages |
| Authors:
David Thompson; Diane J Beasley; Daniel G True; Sheng T Lin; Jean-Louis Briaud; William N Seelig; Blake Jung; NAVAL FACILITIES ENGINEERING COMMAND PORT HUENEME CA ENGINEERING SERVICE CENTER
|
| This handbook discusses the application of engineering techniques and scientific knowledge to the investigation of seafloor materials, their characteristics, and their response to foundation and mooring loads. Its primary thrust is with problems engineers will encounter beyond the continental shelf or below 600 foot water depth, but the information is also applicable to shallow water tasks. |
|
| A Moored System to Obtain High-Resolution Time Series of Velocity and Density in High Current Environments |
30 Sep 2011 |
7 pages |
| Authors:
Jonathan D Nash; OREGON STATE UNIV CORVALLIS COLL OF OCEANIC AND ATMOSPHERIC SCIENCES
|
| We seek a more complete and fundamental understanding of the hierarchy of processes which transfer energy and momentum from large scales, feed the internal wavefield, and ultimately dissipate through turbulence. This cascade impacts the acoustic, optical, and biogeochemical properties of the water column, and feeds back to alter the larger scale circulation. Studies within the Ocean Mixing Group at OSU emphasize observations, innovative sensor / instrumentation development and integration, and ... |
|
| Process Study of Oceanic Responses to Typhoons Using Arrays of EM-APEX Floats and Moorings |
30 Sep 2011 |
11 pages |
| Authors:
Ren-Chieh Lien; Thomas B Sanford; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| Our long-term scientific goals are to understand upper ocean dynamics, to understand the coupling between the ocean and atmosphere via air sea fluxes, and to quantify the mechanisms of air sea interactions. Our ultimate goal is to help develop improved parameterizations of air sea fluxes in ocean atmosphere models and parameterizations of small-scale processes in the upper ocean and the stratified interior. Tropical cyclones derive energy from the ocean via ... |
|
| Study of Kuroshio Intrusion and Transport using Moorings and EM-APEX Floats in QPEU Experiment |
30 Sep 2011 |
9 pages |
| Authors:
Ren-Chieh Lien; Thomas B Sanford; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| Our long-term scientific goals are to understand the dynamics and identify mechanisms of small-scale processes in the ocean with the objective of developing improved parameterizations of mixing for ocean models. Internal tides, inertial waves, nonlinear internal waves (NLIWs), and turbulence mixing are all key components to understanding mixing within the stratified ocean. Each of these factors can lead to uncertainty within current ocean models due to their complex interplay. This ... |
|
| The Secretary of the Navy/Chief of Naval Operations Chair in Oceanographic Sciences |
30 Sep 2011 |
6 pages |
| Authors:
T Dickey; CALIFORNIA UNIV SANTA BARBARA DEPT OF GEOGRAPHY
|
| The general long-term research objective for this work is to advance understanding and predictive capabilities in three areas: 1) upper ocean physical, bio-optical, and biogeochemical responses to intense wind events including hurricanes and typhoons, 2) coastal optics, physical thermodynamics and dynamics, turbulence, internal gravity waves, sediment transport, and harmful algal blooms, and 3) the physical, bio-optical, and biogeochemical dynamics of ocean mesoscale eddies. The overall educational objective is to contribute ... |
|
| Studies of the Origins of the Kuroshio and Mindanao Currents with EM-APEX Floats and HPIES |
30 Sep 2011 |
6 pages |
| Authors:
Thomas B Sanford; WASHINGTON UNIV SEATTLE
|
| Improving observations and understanding of major oceanographic features and phenomena. We emphasize motionally induced electric fields for measuring ocean velocities. Specific goals for OKMC include: Observe Bt and Bc velocity around Ren-Chieh Lien s upper ocean ADCP moorings with HEF (Horizontal E-Field) and PIES (Pressure and Inverted Echo Sounder) merged into 5 HPIES under the Kuroshio north of Luzon Observe velocity and density structure of NEC with 10 EM-APEX floats ... |
|
| Development of an Autonomous Ammonium Fluorescence Sensor (AAFS) with a View Towards In-situ Application |
Sep 2011 |
7 pages |
| Authors:
Peter B Ortner; Jia-Zhong Zhang; Natchanon Amornthammarong; MIAMI UNIV FL ROSENSTIEL SCHOOL OF MARINE AND ATMOSPHERIC SCIENCE
|
| Our goal is to develop a portable autonomous ammonium sensor. Such a sensor could be deployed for periods of up to a month aboard ships, moorings or drifting buoys or used as a component in lowered or towed oceanographic instrument packages for vertical profiling. Our technical objective is to develop a robust, relatively simple, inexpensive, low power and compact instrument with a detection limit in the nM range and a ... |
|
| Mode Processing and Tomography for the Philippine Sea Experiment |
Sep 2011 |
11 pages |
| Authors:
Kathleen E Wage; GEORGE MASON UNIV FAIRFAX VA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| LONG-TERM GOALS. This project is a three-year basic research effort on deep water ocean acoustics. The broad goals of this research are to understand mode scattering in the deep water channel, to characterize deep ocean noise processes, and to implement acoustic tomography using the low mode signals. OBJECTIVES. There are three major technical objectives of the proposed research. The first objective is to analyze the spatial characteristics of noise in ... |
|
| Air-Sea Interaction in the Ligurian Sea: Assessment of a Coupled Ocean-Atmosphere Model Using In Situ Data from LASIE07 |
Jun 2011 |
25 pages |
| Authors:
R J Small; T Campbell; J Teixeira; S Carniel; T A Smith; J Dykes; S Chen; R Allard; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS
|
| In situ experimental data and numerical model results are presented for the Ligurian Sea in the northwestern Mediterranean. The Ligurian SeaAir-Sea Interaction Experiment (LASIE07) and LIGURE2007 experiments took place in June 2007. The LASIE07 and LIGURE2007 data are used to validate the Coupled Ocean- Atmosphere Mesoscale Prediction System (COAMPS)1 developed at the Naval Research Laboratory. This systemincludes an atmospheric sigma coordinate, nonhydrostaticmodel, coupled to a hydrostatic sigma-z-level ocean model (Navy ... |
|
| Near-Inertial Wave Studies Using Historical Mooring Records and a High-Resolution General Circulation Model |
25 Apr 2011 |
6 pages |
| Authors:
Matthew H Alford; Harper Simmons; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| Knowledge of internal waves and ocean mixing is important f()r advancing the performance of operational and climate models, as well as for understanding local problems such as pollutant dispersal and biological productivity. Consequently, a long-term goal of the oceanographic community has been to develop a global internal wave prediction system analogous to systems already in place for surfuce waves. Early steps have been accomplished with simulations of internal tides at ... |
|
| The Competition of Tidal Mixing and Freshwater Forcing in Shaping the Outflow from Hudson Strait |
01 APR 2011 |
5 pages |
| Authors:
Fiammetta Straneo; Luc Rainville; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| Freshwater discharge in narrow, surface trapped, boundary plumes is a common feature of many coastal areas and straits, especially in the high latitudes. Such plumes have typically been described with synoptic measurements or steady state theoretical models and little is know about their variability or the factors which may influence it. Here we take advantage of there years of moored data across the outflow from Hudson Strait, which transport a ... |
|
| Handbook for Marine Geotechnical Engineering |
15 MAR 2011 |
460 pages |
| Authors:
Jr Rocker Karl; David Thompson; Blake Jung; Jean-Louis Briaud; Sheng Lin; NAVAL FACILITIES ENGINEERING COMMAND PORT HUENEME CA
|
| This handbook discusses the application of engineering techniques and scientific knowledge to the investigation of seafloor materials, their characteristics, and their response to foundation and mooring loads. Its primary thrust is with problems engineers will encounter beyond the continental shelf or below 600 foot water depth, but the information is also applicable to shallow water tasks. |
|
| Observed Volume Fluxes in the Bosphorus Strait |
Jan 2011 |
7 pages |
| Authors:
Ewa Jarosz; William J Teague; Jeffrey W Book; Sukru Besiktepe; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Pairs of moorings containing acoustic Doppler current profilers (ADCPs) were deployed at each end of the Bosphorus Strait as a part of the United States Naval Research Laboratory's Exchange Processes in Ocean Straits (EPOS) project. The moorings were deployed in September 2008 and remained in place for about half a year. For the first time, current velocity profiles were collected concurrently at both ends of the strait. They well resolved ... |
|
| Variational Assimilation of Glider Data in Monterey Bay |
Jan 2011 |
17 pages |
| Authors:
Chudong Pan; Max Yaremchuk; Dmitri Nechaev; Hans Ngodock; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Temperature and salinity profiles observed by gliders in the Monterey Bay in August 2003 are assimilated into NCOM model in the framework of a 3dVar scheme with a hybrid background error covariance (BEC) representation. The model performance is validated against independent mooring observations for the assimilation runs with I-hour analysis cycle In the first experiment the background error statistics was estimated using the ensemble of model states spanning the entire ... |
|
| Assessment of Hydroacoustic Propagation Using Autonomous Hydrophones in the Scotia Sea |
Sep 2010 |
9 pages |
| Authors:
Haru Matsumoto; Del R Bohnenstiehl; Robert P Dziak; Robert W Embley; Minkyu Park; OREGON STATE UNIV NEWPORT OR COOPERATIVE INST FOR MARINE RESOURCES STUDIES
|
| The remote area of the Atlantic Ocean near the Antarctic Peninsula and the South Scotia Sea is a region where acoustic surveillance by International Monitoring System hydrophones is at best limited. Sound originating in this area is either blocked or hindered by the South Georgia, South Sandwich Islands and the associated seafloor ridge system, making the region a potential hydroacoustic blind spot. To investigate the sound propagation and interferences affected ... |
|
| Remote Minehunting System: Root Cause Analysis |
Jun 2010 |
|
| Authors:
John W Bailey; Alexander O Gallo; Tzee-Nan K Lo; Caolionn L O'Connell; Thomas P Frazier; Patricia F Bronson; INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA
|
 | The Remote Minehunting System (RMS) is a mine reconnaissance system for the detection, classification, identification, and localization of bottom and moored mine-like objects in shallow and moderately deep water. In December 2009 the Navy notified Congress of a critical Nunn-McCurdy breach in both the Program Acquisition Unit Cost (PAUC) and Average Procurement Unit Cost (APUC). The Navy reported that the PAUC had risen 85.1 percent, from $12.1 million in the ... |
|
| Inland Rivers Floating Aids |
Oct-2009 |
65 pages |
| Authors:
Kurt A Hansen; Richard C Rodi; Adam Kulawy; COAST GUARD NEW LONDON CT RESEARCH AND DEVELOPMENT CENTER
|
| The United States Coast Guard (USCG) maintains approximately 15,000 buoys on 7,400 miles of the Western Rivers system. About half of them are replaced each year at the cost of about $3M. This project evaluated existing hardware and operations to determine if alternative buoy designs could increase buoy life and reduce overall costs. A literature search was performed, including studies on fast water and debris-shedding buoys from the 1970's, a ... |
|
| Limiting Impact Force Due to Yielding and Buckling of the Plates and Internal Structural Frame at the Bow of a Barge during Its Head-on Impact with a Bullnose or Cellular Structure |
Aug-2009 |
51 pages |
| Authors:
Robert M Ebeling; Terry W Warren; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS INFORMATION TECHNOLOGY LAB
|
| This report presents a research study conducted to predict the impact forces that occur when a barge train impacts head-on with a circular concrete or concrete-filled structure. These structures are found at the end of lock approach walls as semicircles called bullnoses, as circular cells, and as mooring cells. This research was conducted using finite element analysis. A detailed finite element model of the bow of a jumbo hopper barge ... |
|
| Comprehensive Environmental Measurements from Autonomous Profiling Floats |
12-May-2009 |
3 pages |
| Authors:
Thomas B Sanford; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| The PI attended three ONR workshops to discuss and help define the future integrated observational program for the Quantifying, Predicting and Exploiting Uncertainty (QPEU), more specifically to help formulate an experiment to study the Kuroshio intrusion, nonlinear internal waves (NLIWs), internal tides, inertial waves, and turbulence mixing resulting from the Kuroshio-topography interaction. The resulting plan is briefly discussed. |
|
| CBLAST Data Analysis: Air-Sea Interaction Floats |
19-Mar-2009 |
9 pages |
| Authors:
Eric J Terrill; SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB
|
| The objective of this program is to analyze data from the deployment of a class of low-cost instruments that were deployed into hurricanes during the Coupled Boundary Layer Air Sea Transfer (CBLAST) initiative. Measurements of the air-sea interface in very high sea states present a difficult challenge for both remote sensing techniques and in-situ moored or shipboard instrumentation. With significant effort and cost, moorings and surface buoys can be designed ... |
|
| Model Test Report of a 100,000 Ton Heavy Lift Ship as a Seabased Intermediate Transfer Station |
Mar-2009 |
56 pages |
| Authors:
Richard Mcllwaine; Dan Sheahan; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD SHIP SYSTEMS INTEGRATION AND DESIGN DEPARTMENT
|
| This report describes the second phase of sub-scale testing undertaken at for the CISD developed Intermediate Transfer Station (ITS). Phase I testing used a 50,000 ton Heavy Lift Ship (HLS) and concentrated on a med-moor configuration. Phase II introduced a wider range of configurations, including skin-to-skin, bow-to-stern, and varied headings with the use of a HLS approximately twice the size of the small HLS. The main objectives of the Phase ... |
|
| The Windy Island Soliton Experiment (WISE): Shallow Water and Basin Experiment Configuration and Preliminary Observations |
19-Feb-2009 |
103 pages |
| Authors:
Christopher W Miller; Marla Stone; Keith Wyckoff; Fred Bahr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Windy Islands Soliton Experiment (WISE) was designed by Taiwan and US physical oceanographers to observe the generation, evolution and transformation of the transbasin, nonlinear internal waves in the Northeastern South China Sea for a period of one year beginning April 2005. To augment the naval relevance of WISE, specifically in the area of antisubmarine warfare, two acoustic propagation studies, one over the shallow shelf and one over the deep ... |
|
| Deep Flow Transport Through the Ulleung Interplain Gap in the Southwestern East/Japan Sea |
Jan-2009 |
13 pages |
| Authors:
Kyung-Il Chang; Kuh Kim; Yun-Bae Kim; Jae-Hak Lee; Wiliam J Chul Teague; Jae Lee; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Deep circulation in the southwestern East/Japan Sea through the Ulleung Interplain Gap (UIG), a possible pathway for deep-water exchange, was directly measured for the first time. Five concurrent current meter moorings were positioned to effectively span the UIG between the islands of Ulleungdo to the west and Dokdo to the east. They provided a 495-day time series of deep currents below 1800 m depth spanning the full breadth of the ... |
|
| Evaluation of Multi-Vessel Ship Motion Prediction Codes |
Sep-2008 |
198 pages |
| Authors:
A L Silver; M J Hughes; R E Conrad; S S Lee; J T Klamo; J T Park; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD SHIP HYDROMECHANICS DEPT
|
| An evaluation of six different multiple body ship motion prediction codes, MVS-CSC, MVTDS, AQWA, ShipMo3D, AEGIR, and LAMP-MULTI, was performed by the Naval Surface Warfare Center, Carderock Division (NSWCCD). Each of the codes in this evaluation was chosen based on its accessibility to the Navy or its use by US regulatory agencies. The evaluation was performed in two parts. The first part compared the capabilities of each code against a ... |
|
| Preparing to Predict: The Second Autonomous Ocean Sampling Network (AOSN-II) Experiment in the Monterey Bay |
06-Jun-2008 |
|
| Authors:
S R Ramp; W Leslie; S Liang; F L Bahr; F Chavez; J D Paduan; D Fratantoni; P Lermusiaux; J Marsden; A R Robinson; Y Chao; I Shulman; N E Leonard; R E Davis; Z Li; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
| The Autonomous Ocean Sampling Network Phase Two (AOSN-II) experiment was conducted in and offshore from the Monterey Bay on the central California coast during July 23 - September 6, 2003. The objective of the experiment was to learn how to apply new tools, technologies, and analysis techniques to adaptively sample the coastal ocean in a manner demonstrably superior to traditional methodologies, and to use the information gathered to improve predictive ... |
|
| An Analysis of Port-Visit Costs of U.S. Navy Aircraft Carriers |
01-Jun-2008 |
81 pages |
| Authors:
Jason W Adams; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The United States Navy is seeking substantial cost savings in the operation of its aircraft carrier fleet, including the costs of port visits. This thesis analyzes data on aircraft carrier port visits from fiscal years 2002 through 2007 to develop statistical models for characterizing and predicting port-visit costs. The models account for explanatory factors that include the ship and port, whether the ship is moored pier side or at anchor, ... |
|
| Variations of Kuroshio Intrusion and Internal Waves at Southern East China Sea: Observational Study with Lagrangian Float and Mooring ADCPs |
20 MAY 2008 |
6 pages |
| Authors:
Ren-Chieh Lien; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| The PI attended three ONR workshops to discuss and help define the future integrated observational program for "Quantifying, Predicting and Exploiting Uncertainty (QPEU)", i.e., to help formulate an experiment to study the Kuroshio intrusion, nonlinear internal waves (NLIWs), internal tides, inertial waves, and turbulence mixing resulting from the Kuroshio-topography interaction. Using historical CTD data collected by the National Center for Ocean Research (NCOR) between 1985 and 2002, the PI computed ... |
|
| Building the Holocene Clinothem in the Gulf of Papua: An Ocean Circulation Study |
28 MAR 2008 |
18 pages |
| Authors:
Rudy Slingerland; Robert W. Selover; Andrea S. Ogston; Timothy R. Keen; Neal W. Driscoll; John D. Milliman; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| This paper investigated the role that tidal and wind-driven flows and buoyant river plumes play in the development of the Holocene clinothem in the Gulf of Papua. Time series data from bottom tripods and a mooring were obtained at four locations near the mouth of the Fly River during portions of 2003 and 2004. Flows in the Gulf of Papua during calendar year 2003 were hindcast every 3 h using ... |
|
| Investigation of 2-Dimensional Isotropy of Under-Ice Roughness in the Beaufort Gyre and Implications for Mixed Layer Ocean Turbulence |
MAR 2008 |
73 pages |
| Authors:
Timothy P. McGeehan; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The two-dimensional (2D) spectral properties, including the degree of isotropy, of under-ice roughness in the Beaufort Gyre were investigated. Under-ice roughness plays an important role in turbulent ocean heat, salt, and momentum fluxes that determine the delicate balance between surface forcing and the ocean interior that sustains or reduces the perennial ice cover. Accurate characterization of this roughness is important for numerical modeling and prediction of the Arctic air-ice-ocean system, ... |
|
| MOSES Support Platform |
01-Feb-2008 |
24 pages |
| Authors:
Oliver Sander; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD SHIP SYSTEMS INTEGRATION AND DESIGN DEPARTMENT
|
| This paper describes a concept design for a mobile support platform for the deployment, retrieval, and operation of the MOSES inflatable causeway. The system provides the capability to unload vehicular cargo at locations without port facilities without driving the vehicles through the surf zone. The platform is based on a commercially available jack-up barge with additional machinery and equipment fitted to deploy and retrieve MOSES. The platform is intended to ... |
|
| A Novel Technique to Detect Epipelagic Fish Populations and Map their Habitat |
Jan-2008 |
8 pages |
| Authors:
Kelly J Benoit-Bird; OREGON STATE UNIV CORVALLIS COLL OF OCEANIC AND ATMOSPHERIC SCIENCES
|
| The ultimate goal of this project is to substantially improve our understanding of the relationship between ecologically important key fish species (e.g. sardine and albacore) and the physical environment by collecting synoptic measurements with improved spatial and temporal resolution of observations. The overall objective of this work is to develop a new technique to detect epipelagic fishes and map their habitat and to test this technique in the EEZ of ... |
|
| Autonomous Sensing of Layered Structures in Hawaiian Waters |
Jan-2008 |
6 pages |
| Authors:
Margaret A McManus; HAWAII UNIV AT MANOA HONOLULU DEPT OF OCEANOGRAPHY
|
| Our long-term goals are (1) to determine the spatial and temporal scales of thin layers, (2) to identify the processes responsible for the formation, maintenance and dissipation of vertically thin layers, and (3) to develop the capability to predict thin layer formation and presence in the sea. The central focus of our research is to investigate: the spatial and temporal scales of thin layers, the relationship between physical processes (from ... |
|
| CLIVAR Mode Water Dynamics Experiment (CLIMODE), Fall 2006 R/V Oceanus Voyage 434, November 16, 2006-December 3, 2006 |
DEC 2007 |
|
| Authors:
Sebastien Bigorre; Robert Weller; Jeff Lord; John Lund; Jaime Palter; George Tupper; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| CLIMODE (CLIVAR Mode Water Dynamics Experiment) is a research program designed to understand and quantify the processes responsible for the formation and dissipation of North Atlantic subtropical mode water also called Eighteen Degree Water (EDW). Among these processes, the amount of buoyancy loss at the ocean-atmosphere interface is still uncertain and needs to be accurately quantified. In November 2006, cruise 434 onboard R/V Oceanus traveled in the region of the ... |
|
| Stratus Ocean Reference Station (20 degs S, 85 degs W) Mooring Recovery and Deployment Cruise, STRATUS 8, R/V Ronald H. Brown Cruise 07-09, October 9, 2007-November 6, 2007 |
DEC 2007 |
|
| Authors:
Sean Whelan; Jeff Lord; Carmen Grados; Lisan Yu; Luis Morales; Nancy Galbraith; Simon P. de Szoeke; Megan O'Leary; Robert Weller; Paul Bouchard; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| The Ocean Reference Station at 20 degs S, 85 degs W under the stratus clouds west of northern Chile is being maintained to provide ongoing climate-quality records of surface meteorology (air-sea fluxes of heat, freshwater, and momentum), and of upper ocean temperature, salinity, and velocity variability. The Stratus Ocean Reference Station (ORS Stratus) is supported by the National Oceanic and Atmospheric Administration's (NOAA) Climate Observation Program. It is recovered and ... |
|
| Low-Frequency Current Variability Observed at the Shelfbreak in the Northeastern Gulf of Mexico: November 2004-May 2005 |
22 OCT 2007 |
26 pages |
| Authors:
Michael R. Carnes; William J. Teague; Ewa Jarosz; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS
|
| Fourteen acoustic Doppler current profilers (ADCPs) were deployed on the shelf and slope for 1 year just west of the DeSoto Canyon in the Northeastern Gulf of Mexico by the Naval Research Laboratory (NRL) as part of its Slope to Shelf Energetics and Exchange Dynamics (SEED) project. The winter and spring observations are discussed here in regards to the low-frequency current variability and its relation to wind and eddy forcing. ... |
|
| Marine Mammals Monitoring for Northwest Fisheries: 2005 Field Year |
JUL 2007 |
33 pages |
| Authors:
Jeffrey A. Nystuen; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| A field program to monitor marine mammals during winter months in the coastal waters of Washington State has been established using Passive Aquatic Listeners (PALs). Upgrades to existing instruments and new operating software were utilized during the field year 2005. Two offshore moorings at Cape Flattery and one mooring in Haro Strait, deployed synergistically with a visual observation program, were successful. Data demonstrate quantitative acoustic classification of the marine environment. ... |
|
| The Variable Outflow from the Chukchi Shelf to the Arctic Ocean |
JUN 2007 |
24 pages |
| Authors:
Knut Aagaard; Rebecca Woodgate; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| Our long-term research goals are to understand the circulation and physical properties of the high-latitude ocean, both quantitatively and mechanistically, and to do so in a global context. We also seek to understand the effects of physical processes in the ocean on the ice cover, biology, and chemistry of the marine environment. The variability of that environment is a special focus and concern. |
|
| Acoustic and Oceanographic Observations and Configuration Information for the WHOI Moorings from the SW06 Experiment |
MAY 2007 |
|
| Authors:
Arthur E. Newhall; Timothy F. Duda; Keith von der Heydt; James D. Irish; John N. Kemp; Steven A. Lerner; Stephen P. Liberatore; Ying-Tsong Lin; James F. Lynch; Andrew R. Maffei; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| This document describes data, sensors, and other useful information pertaining to the moorings that were deployed from the R/V Knorr from July 24th to August 4th, 2006 in support of the SWO6 experiment. The SWO6 experiment was a large, multi-disciplinary effort performed 100 miles east of the New Jersey coast. A total of 62 acoustic and oceanographic moorings were deployed and recovered. The moorings were deployed in a "T" geometry ... |
|
| Extended Measurements in Bering Strait |
MAR 2007 |
17 pages |
| Authors:
Knut Aagaard; Rebecca Woodgate; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| We completed seven cruises in Bering Strait and the Chukchi Sea during 1999-2005. Both the shipborne measurements and nearly continuous moored data from 1990-2005 have been processed and archived. In six refereed papers and eleven presentations at national and international meetings, we have quantified the large variability found in the Pacific-origin waters that flush the western Arctic shelves. Eventually these shelf waters are discharged into the Arctic Ocean, where their ... |
|
| NOPP: Circulation, Cross-Shelf Exchange, Sea Ice, and Marine Mammal Habitats on the Alaska Beaufort Sea Shelf |
01-Jan-2007 |
5 pages |
| Authors:
Thomas Weingartner; Ben Holt; Ron Kwok; Robert Pickart; Al Plueddemann; Susan Moore; Kate Stafford; ALASKA UNIV FAIRBANKS INST OF MARINE SCIENCE
|
| Our long-term goal is to understand how the circulation, stratification, sea-ice dynamics, and marine mammal utilization of arctic shelves will change in response to a diminishing ice cover. We thus seek to understand better the wind-forced response of the shelf and the shelfbreak, and the cross-shelf exchange of mass, materials, and momentum. These responses will likely affect the use of arctic shelves by marine mammals. Our study is applying a ... |
|
| At Sea Personnel Transfer Concepts |
28-Jul-2006 |
92 pages |
| Authors:
Jennifer Gardner; David Jurkiewicz; Sean Marikle; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| At sea personnel transfer on any level is an operation that poses a problem for the modern Navy. Current operations are high risk, slow, inefficient, costly, and can only be accomplished in low sea states. As a result of this apparent gap in capability, ONR has deemed it necessary to form concepts which can evolve with the Navy's ever changing vision of Sea Basing. ONR and NAVSEA have created a ... |
|
| CLIVAR Mode Water Dynamics Experiment (CLIMODE) Fall 2005 R/V Oceanus Voyage 419, November 9, 2005 - November 27, 2005 |
FEB 2006 |
|
| Authors:
Lara Hutto; Robert Weller; David Fratantoni; Jeff Lord; John Kemp; John Lund; Elena Brambilla; Sebastien Bigorre; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| CLIMODE (CLIVAR Mode Water Dynamic Experiment) is a program designed to understand and quantify the processes responsible for the formation and dissipation of North Atlantic subtropical mode water, also called Eighteen Degree Water (EDW). Among these processes, the amount of buoyancy loss at the ocean-atmosphere interface is still uncertain and needs to be accurately quantified. In November 2005, a cruise was made aboard R/V Oceanus in the region of the ... |
|
| Multi-Disciplinary Ocean Sensors for Environmental Analyses and Networks (MOSEAN) |
2006 |
8 pages |
| Authors:
T. Dickey; A. ;Hanson ;D. Karl; C. Moore; CALIFORNIA UNIV SANTA BARBARA CA OCEAN PHYSICS LAB
|
| The long-term goal of the Multi-disciplinary Ocean Sensors for Environmental Analyses and Networks (MOSEAN) project is to develop and test new technologies that are essential for solving a variety of interdisciplinary oceanographic problems of societal importance in coastal and open ocean environments. Problems of relevance to MOSEAN include: biogeochemical cycling, climate change effects, ocean pollution, harmful algal blooms (HABs), ocean ecology, and underwater visibility. The primary objectives of MOSEAN are: ... |
|
| U.S. GLOBEC Georges Bank Long-Term Moored Program. Part 1. Mooring Configuration |
DEC 2005 |
|
| Authors:
J. D. Irish; S. Kerry; P. Fucile; R. C. Beardsley; J. Lord; K. H. Brink; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| As part of the U.S. GLOBEC Northwest Atlantic/Georges Bank program, moorings were deployed on Georges Bank as part of the broad-scale survey component to help measure the temporal variability of both physical and biological characteristics on the Bank. The array consisted of a primary mooring site on the Southern Flank which was maintained for the full 5- year duration of the field program, plus secondary moorings, with fewer sensors and ... |
|
| Mooring Operations and Support for NRL RAGS 2003 Experiment |
28 SEP 2005 |
7 pages |
| Authors:
John N. Kemp; Donald B. Peters; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA DEPT OF APPLIED OCEAN PHYSICS AND ENGINEERING
|
| The long-term goal of the Mooring Operations and Support for the NRL RAGS experiment was to provide the Naval Research Laboratory with expertise in design and deployment of moored platforms for obtaining acoustic data in the New Jersey Bight area under winter conditions. Our specific objectives for this project were to provide mechanical engineering design, mooring design, and field operations support for the RAGS moorings. The tasks required to meet ... |
|
| Extreme Waves Under Hurricane Ivan |
05 AUG 2005 |
4 pages |
| Authors:
David W. Wang; Douglas A. Mitchell; William J. Teague; Ewa Jarosz; Mark S. Hulbert; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Hurricane Ivan a category 4 storm, passed directly over six wave-tide gauges deployed by the Naval Research Laboratory on the outer continental shelf in the northeastern Gulf of Mexico. Waves were observed with significant wave heights reaching l7.9 meters and maximum crest-to-trough individual wave heights of 27.7 meters (91 feet). Analysis suggests that significant wave heights likely surpassed 21 meters (69 feet) and that maximum crest-to-trough individual wave heights exceeded ... |
|
| Determining the Applicability of the Barotropic Approximation to the Mean Seasonal Flow Through the Tsushima/Korean Strait using Variational Assimilation |
21 JUL 2005 |
22 pages |
| Authors:
S. R. Smith; G. A. Jacobs; R. R. Leben; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS
|
| Variational assimilation is used to combine velocity and sea-surface height anomaly (SSHA) measurements with a system of dynamics to estimate the seasonal flow through the Taushima/Korean Strait for the summer, autumn and winter seasons of 1999-2000. The velocity measurements are from two lines of moored acoustic Doppler Current profilers (ADCPs) spanning the Tsushima/Korean strait just north and south of Tsushima island and the SSHA measurements are from the TOPEX altimeter. ... |
|
| Autonomous Ocean Profilers for Extreme Weather |
01-Jun-2005 |
11 pages |
| Authors:
Eric J Terrill; SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB
|
| The objective of this program is to analyze data from the deployment of a class of low-cost instruments that were deployed into hurricanes during the Coupled Boundary Layer Air Sea Transfer (CBLAST) initiative. Measurements of the air-sea interface in very high sea states present a difficult challenge for both remote sensing techniques and in-situ moored or shipboard instrumentation. While the satellite-based remote-sensing techniques generally lose accuracy in high sea-states due ... |
|
| CBLAST 2003 Field Work Report |
APR 2005 |
|
| Authors:
Lara Hutto; Tom Farrar; Robert Weller; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| The long-range scientific objective of the Coupled Boundary Layer Air Sea Transfer (CBLAST) project is to observe and understand the temporal and spatial variability of the upper ocean, to identify the processes that determine that variability, and to examine its predictability. Air-sea interaction is of particular interest, but attention is also paid to the coupling of the sub- thermocline ocean to the mixed layer and to both the open ocean ... |
|
Reports by Keyword(s)
MOORING
