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  • Oceanographic instruments  (30)
  • Fisheries  (8)
  • Cell & Developmental Biology
  • General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.
  • Quantum optics, physics of lasers, nonlinear optics, classical optics
  • Woods Hole Oceanographic Institution  (38)
  • 2015-2019  (38)
  • 2000-2004
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  • 1
    Publication Date: 2022-05-25
    Description: Despite an absence of freshwater exploitation, the adult salmon run in the Matamek River, Quebec, declined during 1975-1980 to 〈23% of the level thought to occur there prior to 1967. Returns in 1979 and 1980 of adults tagged as smolts were 1.0% and 0.9%, respectively. Numbers of emigrating smolts and their corresponding adult returns are not significantly correlated, although we observed a trend towards more salmon (2 sea year fish) returning with larger numbers of migrating smolts. Since 1967 there is noted a decrease in the age at which returning adults smolted and females appear to now constitute a larger percentage of returning grilse and salmon. These, and other changes in life history characteristics, appear to be caused solely by commercial exploitation.
    Description: Prepared by the Woods Hole Oceanographic Institution and the Department of Recreation, Fish and Game of the Province of Quebec.
    Keywords: Atlantic salmon ; Fish populations ; Atlantic salmon ; Fisheries
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 2
    Publication Date: 2022-05-25
    Description: The following report describes the scientific motivations for the use of a Sea Floor Winch System for Wireline Re-entry of Deep Sea Boreholes and presents a conceptual design for the winch system.
    Description: This report has been prepared for the Scripps Institution of Oceanography under U.C.S.D. Order # G29733-0901.
    Keywords: Oceanographic instruments ; Winches
    Repository Name: Woods Hole Open Access Server
    Type: Working Paper
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  • 3
    Publication Date: 2022-05-25
    Description: The Seafloor Borehole Array Seismic System (SEABASS) was originally developed to record autonomously on the seafloor the signals received on a four-sonde three-component borehole geophone array in the VLF band (2-50Hz)(Stephen eta!., 1994). The system is designed to use the wireline re-entry capability (Spiess, 1993; Spiess eta!., 1992) to install and retrieve the seafloor instrumentation (Figures 1 and 2). Following the successful demonstration of this technology on the LFASE (Low Frequency Acoustic-Seismic Experiment) project in September 1989, it was decided to extend the capability to broadband (1000sec-5Hz) borehole seismometers which could be used for permanent seafloor seismic observatories in the Ocean Seismic Network (Orcutt and Stephen, 1993; Purdy and Dziewonski, 1988; Purdy and Orcutt, 1995; Stephen, 1995; Sutton and Barstow, 1990; Sutton eta!., 1988; Sutton eta!., 1965). The Broadband Borehole Seismic System (B3S2) is the prototype system for permanent broadband borehole seismic observatories on the seafloor. It has three major components: i) a broadband borehole seismometer, the Teledyne 54000, modified for seafloor operations by Scripps-IGPP; ii) the re-entry system provided by Scripps-MPL; and iii) the seafloor recording system developed by WHO I. Because of the similarity of the seafloor recording system to SEABASS we have named this new system SEABASS-ll. This report discusses the development of SEABASS-Il at WHOI in the period from July 14, 1992 to January 31, 1996. The motivation for the project and a work statement are contained in WHOI proposals 7016 and 7016.1. This report is a collection of documentation prepared while the work was being carried out. Some of the issues discussed in early memos were subsequently changed. Modifications and further testing of SEABASS-ll, as well as final system integration tests with the borehole andreentry systems (both of which are also still being modified and tested) have still to be carried out in preparation for the OSN Pilot Experiment Cruise in Spring 1997. This is a preliminary report only and presents work in progress. It will be useful to the engineering team as a historical reference of the sequence of events in the development of SEABASS-ll but it should not be considered as a technical manual for the instrumentation.
    Keywords: Seismology ; Borehole gravimetry ; Ocean bottom ; Oceanographic instruments
    Repository Name: Woods Hole Open Access Server
    Type: Working Paper
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  • 4
    Publication Date: 2022-05-25
    Description: This report presents a bibliography of literature on the Persian Gulf and sections concerning design and equipment for a Persian Gulf marine research vessel and for a marine field operation.
    Description: Prepared with funds from the Iranian Department of the Environment.
    Keywords: Marine resources ; Oceanographic instruments
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 5
    Publication Date: 2022-05-26
    Description: As part of the Coastal Ocean Dynamics Experiment (CODE) field program, moored buoys were instrumented to measure and record wind speed and direction, air and water temperature, insolation, barometric pressure and relative humidity. Appropriate sensors were selected, necessary modifications to the sensors and existing current meters were made, and Vector Averaging Wind Recorders (VAWRs) were assembled. R. M. Young utility rotor and vane wind sets designed by G. Gill, Paroscientific Digiquartz pressure sensors, Eppley pyranometers and Hy-Cal relative humidity and solar sensors were used in two field experiments . Standard VACM direction and temperature sensors were maintained in the wind recorders. Devices were constructed as needed to protect against measurement errors due to wind, sun and ocean spray. Four W.H.O.I. VAWRs with Gill wind sensor sets were deployed CODE-1 in 1981. Seven VAWRs were deployed in CODE-2 in 1982. A modified VMCM (Vector Measuring Current Meter) was used for comparison in CODE-1, and the seventh VAWR deployed in CODE-2 carried an integral sensor set for comparison. Although several VAWRs had minor problems, all but one VAWR in the two experiments returned useful scientific data.
    Description: Funding was provided by and this report prepared for the National Science Foundation under grant Numbers OCE 80-14941 and OCE 84-17769.
    Keywords: Marine meteorology ; Oceanographic instruments
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 6
    Publication Date: 2022-05-26
    Description: The Patch Experiment (PATCHEX) was a multi-ship experiment that took place in the area near 34 N, 127 W, between 8 and 27 October, 1986. The ships used in the experiment and their chief scientific objectives were the following: R/V THOMPSON, AMP (Advanced Microstructure Profiler) and MSP (micro-structure profiler) drops; USNS DESTEIGUER, ADCP (Acoustic Doppler current Profiler), seasoar and RiNo (Richardson Number) f loat operations; R/V POINT SUR, ADCP and towed fish; and FLIP, Acoustic Doppler and CTD profiling. This report describes the RiNo operations carried out on the USNS DESTEIGUER. Topics discussed include the RiNo float, the sensors used, how it was tracked, some of the preliminary results, and a log of the relevant parts of USNS DESTEIGUER Cruise #84.
    Description: Funding was provided by the Office of Naval Research through contract Number N00014-85-C-0001.
    Keywords: Patch Experiment ; Hydrography ; Oceanographic instruments ; Desteiguer (Ship) Cruise 84
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 7
    Publication Date: 2022-05-26
    Description: A modified clamping system for 30-liter Niskin bottles, consisting of a wire stop, a socket block, and a toggle clamp, has been designed and has been tested at sea. The modified system makes deployment and recovery of the Niskin bottles considerably easier than it is with the standard clamps .
    Description: Funding was provided by the National Science Foundation under grant Number OCE 84-17910, and by the United States Department of Energy under contract Number DE-AC02-76EV03566.
    Keywords: Marine biology ; Oceanographic instruments
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 8
    Publication Date: 2022-05-26
    Description: The broadband borehole seismic system (B3S2) is being developed as one component of the Ocean Seismic Network (OSN) Pilot Experiment which will be carried out at the OSN-1 Site off Hawaii in Winter 1998. The other major instruments being developed for the experiment are a Broadband Ocean Bottom Seismometer and a Shallow Buried Broadband Ocean Bottom Seismometer. B3S2 consists of four major components: 1) a borehole sonde with a re-entry guide, Teledyne 54000 broadband seismometer, and REFTEK digitizing system, 2) a seafloor acquisition and recording system (SEABASS), 3) a control vehicle for deploying the sonde in a borehole, and 4) shipboard command and control electronics. The deployment system is very similar to the SEABASS configuration used on LFASE (Stephen eta!, 1994). The purposes of the tests at Pinon Flat were: 1) to integrate the borehole sonde and seafloor and shipboard electronics which had been constructed by different groups: WHOI and SIO/IGPP; 2) test the combined subsystem in a wet borehole environment using actual cables and simulating seafloor conditions; and 3) acquire seismic ambient noise and earthquake data over approximately a three month period for comparison with known stations at the Pinon Flat Observatory.
    Description: This work was carried out under NSF Grants No. OCE-91-18943 and OCE No. OCE-95-05730: "A Broadband Borehole Seismometer for the Deep Ocean - Development and Land Testing"
    Keywords: Seismology ; Borehole gravity meters ; Ocean bottom ; Oceanographic instruments
    Repository Name: Woods Hole Open Access Server
    Type: Working Paper
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  • 9
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    Woods Hole Oceanographic Institution
    Publication Date: 2022-05-26
    Description: This document contains two workshop reports and several brief technical reports, all on aspects of ocean data telemetry and platform positioning. The principal topic is a Summary of an Ocean Telemetry Workshop held at the AGU/ ASLO Ocean Sciences Meeting in New Orleans, Louisiana, on 15 January 1986. A brief version of this summary appeared in EOS, Transactions of the American Geophysical Union, 4 March 1986. Both the full summary presented here and the brief form in EOS were coauthored by D. Brooks of Texas A&M University. Included here is a list of the attendees at that workshop (Appendix A), and a description of the goals and membership of the AGU Ocean Sciences Section Technical Committee on Ocean Data Telemetry and Platform Positioning, which was formed at that meeting (Appendix B). An earlier, informal, local workshop on telemetry was held at Woods Hole in March 1985; a report on that meeting is in Appendix C. Technical summaries are given on Meteor-Burst Telemetry (Appendix D), the GEOSTAR positioning system (Appendix E), tradeoffs for various telemetry systems (Appendix F), a proposed communications network [authored by M. Comberiate from NASA Goddard) (Appendix G), and the possibilities of a new kind of HF telemetry system (Appendix H). A small discussion at Woods Hole prior to the January Telemetry Workshop is reported in Appendix I.
    Description: Funding was provided by the Office of Naval Research under Contracts No. N00014-84-C-0134. NR 083-400 and N00014-85-C-0001, NR 083-004.
    Keywords: Oceanographic instruments ; Telemeter ; Artificial satellites in earth sciences
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 10
    Publication Date: 2022-05-26
    Description: The Ocean Bottom Seismometer Augmentation in the North Pacific Experiment (OBSANP, June-July, 2013, R/V Melville) addresses the coherence and depth dependence of deep-water ambient noise and signals. During the 2004 NPAL Experiment in the North Pacific Ocean, in addition to predicted ocean acoustic arrivals and deep shadow zone arrivals, we observed "deep seafloor arrivals" (DSFA) that were dominant on the seafloor Ocean Bottom Seismometer (OBS) (at about 5000m depth) but were absent or very weak on the Distributed Vertical Line Array (DVLA) (above 4250m depth). At least a subset of these arrivals correspond to bottomdiffracted surface-reflected (BDSR) paths from an out-of-plane seamount. BDSR arrivals are present throughout the water column, but at depths above the conjugate depth are obscured by ambient noise and PE predicted arrivals. On the 2004 NPAL/LOAPEX experiment BDSR paths yielded the largest amplitude seafloor arrivals for ranges from 500 to 3200km. The OBSANP experiment tests the hypothesis that BDSR paths contribute to the arrival structure on the deep seafloor even at short ranges (from near zero to 4-1/2CZ). The OBSANP cruise had three major research goals: a) identification and analysis of DSFA and BDSR arrivals occurring at short (1/2CZ) ranges in the 50 to 400Hz band, b) analysis of deep sea ambient noise in the band 0.03 to 80Hz, and c) analysis of the frequency dependence of BR and SRBR paths. On OBSANP we deployed a 32 element VLA from 12 to 1000m above the seafloor, eight short-period OBSs and four long-period OBSs and carried out a 15day transmission program using a J15-3 acoustic source.
    Description: Funding was provided by the Office of Naval Research under contract #'s N00014-10-1-0987 and N00014-10-1-0510
    Keywords: Melville (Ship) Cruise MV1308 ; Underwater acoustics ; Oceanographic instruments
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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