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Metadata
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ID
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96027
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Also Known As
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96027
KILA96028
K-1-96-HW
KILA96028
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Abstract
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United States Geological Survey, Woods Hole, Massachusetts.
Chief Scientist: Mike Torresan. Mooring Deployment data (GPS,
currentmeter, temperature, sedimenttrap) of field activity
96027 (K-1-96-HW) in Mamala Bay, O'ahu, Hawaii from
06/20/1996 to 06/20/1996
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Organization
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United States Geological Survey, Woods Hole, Massachusetts
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Project/Theme
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Mamala Bay Dredge Disposal
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National Plan
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Environment
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Chief Scientist
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Mike Torresan
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Activity Type
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Mooring Deployment
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Platform
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Kila
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Area of Operation
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Mamala Bay, O'ahu, Hawaii
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Location map
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Bounding Coordinates
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21.24933
-157.87616 -157.87616
21.24933
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Ports
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leave Sand Island Port of Honolulu, HI
arrive Sand Island Port of Honolulu, HI
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Dates
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06/20/1996 (JD 172) to 06/20/1996 (JD 172)
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Analog Materials
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No analog holdings.
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Index map
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Information Specialist
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Florence Wong
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Marinna Martini
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Crew
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Mike Torresan
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Chief Scientist, USGS Western Region
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George Tate
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Geologist, USGS Western Region
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Monty Hampton
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Geologist, USGS Western Region
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Bill Strahle
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Unspecified Investigator, USGS Woods Hole
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Marinna Martini
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Information Specialist, USGS Woods Hole
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Dave Cacchione
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Oceanographer, USGS Western Region
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Mike Field
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Geologist, USGS Western Region
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Equipment Used
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GPS
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currentmeter
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temperature
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sedimenttrap
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Purpose
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Measure oceanographic currents and
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water temperature at this site in Mamala Bay by deploying a
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108 m-long mooring outfitted with 4 VACM current meters,
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3 temperature probes, and a sediment trap. The data will augment
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a data set recently collected and published by the Mamala Bay Study
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Commission. The study will provide a more complete understanding
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of seasonal variations in oceanographic processes affecting Mamala
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Bay. The aim is to determine how the dredged material-- and any
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associate pollutants-- might be moved or reworked by oceanographic
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processes and redistributed after disposal. This is part of a larger
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study that is in its fourth year. The study is designed to assess the
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impacts to the seafloor and to benthic invertebrate infauna from the
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disposal of harbor dredged material from primarily Pearl and Honolulu
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Harbors. Our ultimate goal is to understand the Mamala Bay system
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as an urban ocean setting, and to provide Coastal and Urban ocean
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managers and policy makers with the information required to make
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informed decisions regarding the use of the oceans.
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Information to be Derived
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Seasonal changes in sediment rate, current speed, temperature, salinity, and transmissivity at different positions above the seafloor.
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Summary
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The USGS deployed a 108 m-long mooring on the seafloor at 21.24963
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degrees N / 157.87612 degrees W. The site is located immediately east of the old
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Honolulu Harbor disposal site, inactive since 1980. The mooring is situated in
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about 460 m of water, is 108 m long and outfitted with 4 VACM current meters
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(recording speed, direction, temperature, salinity, and transmission), 3
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temperature probes located directly below the VACMs, and an Anderson Sediment
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trap situated near the middle of the mooring. The sediment trap is outfitted
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with an intervalometer so we can assess sedimentation rates. Current meters
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are located at about 6 m, 30 m, 40 m, and 100 m above the sea bed. Temperature
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probes are located very close to the current meters.
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Publications
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Cruise Report exists at Woods Hole
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Got Help?
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For 96027, we would appreciate any information on -- analog materials, contract, days at sea, dive count, funding, kms of navigation, NGDC Info, notes, owner, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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