1,725,237 research outputs found
WHOI comments on DSRV Alvin design
Get PDFWHOI comments on DSRV Alvin design, including: personnel sphere; personnel sphere windows, hatch and penetrations; buoyancy materials; and weight and stability.This work has been carried out under Contract Nonr-3484(00), NR 260-107 with the Office of Naval Research
WHOI cable : time domain numerical simulation of moored and towed oceanographic systems
Get PDFThis report presents a numerical framework for analyzing the statics and dynamics of cable strctures commonly
encountered in oceanographic engineering practice. The numerical program, WHOI Cable, features a nonlinear solver that
includes the effects of geometric and material nonlinearties, bending stiffness for seamless modeling of slack cables, and a
model for the interaction of cable segments with the seafoor. The program solves both surface and subsurface single-point
mooring problems, systems with both ends anchored on the bottom, and towing and drifter problems. Forcing includes
waves, current, ship speed, and pay-out of cable. The programs that make-up WHOI Cable run under Unix, DOS, and
Windows. There is a familiar Windows-style interface available for Windows 95 and Windows NT platforms. In the report,
the mathematical and numerical framework for WHOI Cable is described, followed by detailed instructions for formulating
problem input files and running the codes. Examples are included in an appendix to highlight the range of problems that
WHOI Cable can solve.Funding was provided by the Office of Naval Research through grants NOOOl4-92-J-1269
and N00014-95-1-0106 and an Office of Naval Research Graduate Fellowship
WHOI silhouette DIGITIZER version 1.0 user’s guide
Get PDFWHOI Silhouette DIGITIZER is a MATLAB-based computer program for measuring the lengths of
marine organisms in the macrozooplankton size range. DIGITIZER displays a scanned
photographic image of a seawater slurry containing large numbers of marine organisms, upon
which is superimposed a reference grid. DIGITIZER then allows you to measure the organisms'
lengths using the cursor on the computer screen. DIGITIZER automatically calculates each
organism’s biomass and generates spreadsheet compatible output listings of basic statistics
derived from the data. DIGITIZER also produces text files of lengths, weights, and size-frequency
histograms.Funding was provided by the National Science Foundation
under Grant Nos. OCE-9806381, OCE-9940880, and OCE-0095069
WHOI Cable v2.0 : time domain numerical simulation of moored and towed oceanographic systems
No full textThis report describes version 2.0 of a numerical program for analyzing the statics and dynamics of cable structures commonly encountered in oceanographic engineering practice. The numerical program, WHOI Cable, features a nonlinear solver that includes the effects of geometric and material nonlinearities, bending stiffness for seamless modeling of slack cables, and a model for the interaction of cable segments with the seafloor. The program solves both surface and subsurface single- and multi-point mooring problems, systems with both ends anchored on the bottom, and towing and drifter problems. Forcing includes waves, current, wind, ship speed, and pay-out of cable. The programs that make-up WHOI Cable run under Unix and Windows. There is familiar graphical interface available for Windows platforms. The report includes detailed instructions for formulating problem input files and running the programs.Funding was provided by the Office of Naval Research under Contract Nos. N00014-92-J-1269 and N00014-95-1-0106
WHOI-NEFC fisheries ecology seminar series : a summary
No full textThis report summarizes the findings of the joint WHOI-NEFC seminar series on
recruitment processes in marine fish populations. The seminar series reviewed
the status of knowledge of the recruitment process together with on-going
research in this field. From the seminars presented it was evident that
potentially important biological and physical processes which may control
recruitment occur throughout the entire first year of life. It is important
to understand the causes of recruitment variability in order to know the
degree to which density dependence controls marine fish population dynamics.
Future research, therefore, should not focus on a single process or life stage
but instead should evaluate all potentially important processes throughout the
first year of life.Partial funding provided through the National Marine Fisheries Service
as part of a cooperative agreement with the
the Woods Hole Oceanographic Institution
and through a grant to the Center for Analysis of Marine Systems
of the Woods Hole Oceanographic Institution
Deployment operation procedures for the WHOI Ice-Tethered Profiler
Get PDFDeployed and fixed to a suitable multi-year ice floe, the Ice-Tethered Profiler (ITP) can
sustain near-real time measurements of upper ocean temperature and salinity for up to three years.
Incorporating a specifically designed winch system and deployment apparatus that is both light
weight and easily assembled or disassembled on a ship or at a deployment site, the ITP can be
deployed in less than four hours by either transporting the gear and field personnel to the
deployment site via aircraft, or by lowering the gear over the side of a ship and hauling on the ice.
Using daily satellite imagery (if available), visual reconnaissance flights, and ice surveying, the
choice of an appropriate ice floe is a necessity to select a site that will sustain the system for a
prolonged period of time (depending upon the instrument sampling rate). If available, the
helicopter is the preferable method for surveying different sites and for deployment operations.
Working from a ship typically limits the distance and selection of ice floes. Pre-deployment
procedures include powering and configuring the ITP instruments and preparing the apparatus
for transport to the deployment site. Specific deployment methods include the assembly and
disassembly of the ITP winch, proper placement of the total ITP deployment apparatus, ‘Yale
Grip’ braiding and slipping techniques, and testing the Iridium and Inductive communication
links. The operations described here provide a safe and efficient manner to easily deploy the
WHOI ITP.Funding was provided by the National Science Foundation under Grant No. OCE-0324233 and by the Office of Polar Programs under award numbers ARC-0519899 and ARC-0631951
WHOI Hawaii Ocean Timeseries Station (WHOTS) : WHOTS-8 2011 mooring turnaround cruise report
Get PDFNote: author "Ludovic Bariteau" is incorrectly listed as "Bariteau Ludovic" on the Cover and Title Page.The Woods Hole Oceanographic Institution (WHOI) Hawaii Ocean Timeseries (HOT) Site
(WHOTS), 100 km north of Oahu, Hawaii, is intended to provide long-term, high-quality air-sea
fluxes as a part of the NOAA Climate Observation Program. The WHOTS mooring also serves
as a coordinated part of the HOT program, contributing to the goals of observing heat, fresh
water and chemical fluxes at a site representative of the oligotrophic North Pacific Ocean. The
approach is to maintain a surface mooring outfitted for meteorological and oceanographic
measurements at a site near 22.75°N, 158°W by successive mooring turnarounds. These
observations will be used to investigate air–sea interaction processes related to climate
variability.
This report documents recovery of the seventh WHOTS mooring (WHOTS-7) and deployment
of the eighth mooring (WHOTS-8). Both moorings used Surlyn foam buoys as the surface
element and were outfitted with two Air–Sea Interaction Meteorology (ASIMET) systems. Each
ASIMET system measures, records, and transmits via Argos satellite the surface meteorological
variables necessary to compute air–sea fluxes of heat, moisture and momentum. The upper 155
m of the moorings were outfitted with oceanographic sensors for the measurement of
temperature, conductivity and velocity in a cooperative effort with R. Lukas of the University of
Hawaii. A pCO2 system was installed on the WHOTS-8 buoy in a cooperative effort with Chris
Sabine at the Pacific Marine Environmental Laboratory. A set of radiometers were installed in
cooperation with Sam Laney at WHOI.
The WHOTS mooring turnaround was done on the NOAA ship Hi’ialakai by the Upper Ocean
Processes Group of the Woods Hole Oceanographic Institution. The cruise took place between 5
July and 13 July 2011. Operations began with deployment of the WHOTS-8 mooring on 6 July.
This was followed by meteorological intercomparisons and CTDs. Recovery of WHOTS-7 took
place on 11 July 2011. This report describes these cruise operations, as well as some of the in-port
operations and pre-cruise buoy preparations.Funding was provided by the National Oceanic and Atmospheric Administration under Grant No.
NA090AR4320129 and the Cooperative Institute for the North Atlantic Region (CINAR)
WHOI Hawaii Ocean Timeseries Station (WHOTS) : WHOTS-14 2017 mooring turnaround cruise report
Get PDFThe Woods Hole Oceanographic Institution (WHOI) Hawaii Ocean Time-series Station (WHOTS), located approximately 100 km north of Oahu, Hawaii, is intended to provide long-term, high-quality air-sea fluxes as a part of the NOAA Climate Observation Program. The WHOTS mooring also serves as a coordinated part of the Hawaii Ocean Time-series (HOT) program, contributing to the goals of observing heat, fresh water and chemical fluxes at a site representative of the oligotrophic North Pacific Ocean. The approach is to maintain a surface mooring instrumented for meteorological and oceanographic measurements at a site near
22.75°N, 158°W by successive mooring turnarounds. These observations are used to investigate
air–sea interaction processes related to climate variability.
This report documents recovery of the thirteenth WHOTS mooring (WHOTS-13) and deployment of the fourteenth mooring (WHOTS-14). Both moorings used Surlyn foam buoys as the surface element and were outfitted with two Air–Sea Interaction Meteorology (ASIMET) systems. Each ASIMET system measures, records, and transmits via Argos and Iridium satellite the surface meteorological variables necessary to compute air–sea fluxes of heat, moisture and momentum. The upper 155 m of the moorings were outfitted with oceanographic sensors for the measurement of temperature, conductivity and velocity in a cooperative effort with Dr. Roger Lukas of the University of Hawaii. A pCO2 system and ancillary sensors were installed on the
buoys in cooperation with Adrienne J. Sutton at the Pacific Marine Environmental Laboratory.
The WHOTS mooring turnaround was conducted on the NOAA ship Hi’ialakai (R/V HA). Operations were a joint effort undertaken by the Upper Ocean Processes group (UOP) of the Woods Hole Oceanographic Institution (WHOI), the University of Hawaii’s (UH) Hawaii Ocean Time-series group (HOT), and the able-bodied crew of R/V HA. The cruise took place between 25 July and August 3 2017. Operations began with deployment of the WHOTS-14 mooring on 27 July. This was followed by a period of intercomparison, where meteorological measurements and CTDs were collected at both the W13 and W14 stations. Recovery of the WHOTS-13 mooring took place on 31 July. This report details the in-port operations, pre-cruise buoy preparations, cruise operations and data collected.Funding was provided by the National Oceanic and Atmospheric Administration under Grant No. NA14OAR4320158 and the Cooperative Institute for the North Atlantic Region (CINAR)
Stabilizing dunes and coastal banks using vegetation and bioengineering : proceedings of a workshop held at the Woods Hole Oceanographic Institution, Woods Hole, MA
Get PDFThe primary objective of the workshop and these proceedings is to share with a broader audience
the valuable information and extensive dialogue that took place amongst over 100 individuals
who attended the third in a series of workshops on the science and management of coastal
landforms in Massachusetts. The workshop took place at the Woods Hole Oceanographic Institution
(WHOI), Woods Hole, MA on February 28, 2002. The individuals who attended the workshop
are actively engaged in planning, managing, regulating, engineering, educating, and studying the
interaction of human activities with coastal landforms and coastal processes, particularly erosion
control related activities.
This workshop titled, Stabilizing Dunes and Coastal Banks using Vegetation and Bioengineering,
was a natural follow-up to two previous workshops: Can Humans and Coastal Landforms Co-exist,
held at WHOI, January 24, 2001 (proceedings published as WHOI Technical Report #WHOI-2001-14), and Coastal Landform Management in Massachusetts, held at WHOI October 9-10, 1997 (proceedings
published as WHOI Technical Report #WHOI-98-16).
This workshop had a very practical, applied focus, providing state-of-the-art scientific and case
history engineering applications of non-structural/bioengineering and coastal vegetation-related
erosion control and wildlife habitat enhancement techniques. The history and theory of bioengineering
in coastal areas was discussed as well.Funding was provided by Cape Cod Cooperative Extension and
SeaGrant at Woods Hole Oceanographic Institution
Notes on the 1968 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution
Get PDFOriginally issued as Reference No. 68-72, series later renamed WHOI-.The general circulation of the oceans was the topic of concentration
for the 1968 WHOI Summer Program in Geophysical Fluid DynamicsNational Science Foundatio
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