Deep ocean current profiles, water temperatures, and echo amplitudes from bottom-moored ADCP during 2011-2013 of the Aloha Cabled Observatory (NCEI Accession 0123608)


Metadata
File Identifier: gov.noaa.nodc:0123608
Metadata Language: English
: utf8
Resource Type: Dataset
Responsible Party:
Organisation Name: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Position Name: Data Officer
Role: Custodian
Contact Info:
Voice: 301-713-3277
Fax: 301-713-3300
Delivery Point: Federal Building 151 Patton Avenue
City: Asheville
Administrative Area: NC
Postal Code: 28801-5001
Country: USA
E-Mail Address: NODC.DataOfficer@noaa.gov
Online Resource: https://www.ncei.noaa.gov/
Metadata Date:
Metadata Standard Name: ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
Metadata Standard Version: ISO 19115-2:2009(E)
Data Identification
Abstract: The ALOHA Cabled Observatory (ACO) is a system of hardware and software that extends electric power and the Internet offshore, supporting sustained real-time observations in the deep ocean. The ACO is connected to Oahu, Hawaii by the HAW-4 telecommunications cable transferred to the project by AT&T in 2007. On June 6th, 2011, the ACO was deployed on the ocean bottom (depth ~ 5 kilometers - 3 miles) near Station ALOHA , 100 kilometers (60 nautical miles) north of Oahu, Hawaii. Station ALOHA is the site of the long-term Hawaii Ocean Time-series (HOT) open ocean measurement program, visited by research vessels 10-12 times each year since October 1988. There are five modules that are connected together on the seafloor. The Junction Box is connected to the HAW-4 cable and to the Observatory module. Together, they supply 1200 watts of power and 100 Megabits per second of Ethernet communications to sensor systems on these two modules, and to the other three modules. The other modules are the Camera tripod, the AMM bottom node, and the TAAM mooring. Sensors provide live video of the ocean bottom around the ACO, sound from local and distant sources, currents, pressure, temperature, and salinity. This data set contains the 2011-06 to 2013-12 rapidly sampled current velocity data, which are collected at the ACO using a SonTek 250 kHz Acoustic Doppler Profiler. The instrument is located at a depth of 4726.2 m below the mean surface, 1.83 m above the bottom. There are 20 depth bins in each profile, which reaches upward to at most 100 m above the bottom. The data have been quality controlled and are stored in NetCDF format. The files contain current velocity in the east, north, and upward directions in m/s. Ancillary fields include mean echo amplitude and temperature. The project is ongoing with data from 2014- to become available.
Purpose: It is difficult to make sustained measurements in the deep ocean. Systems lowered on cables from research ships can use power from the ship, but ships (and people) cannot remain on station without reprovisioning. Systems that are moored in the ocean can make measurements for a longer period of time, but they are limited by the battery power that can be contained in pressure-resistant cases. Moored measurements are typically not available until the mooring is recovered a year or more after deployment. With a surface buoy and special subsurface cabling, moorings can transmit limited amounts of data by satellite to shore with relatively little delay. The ACO provides continuous power and fast two-way communications between shore and a variety of oceanographic instruments, allowing scientific research to be done continually. These capabilities allow scientists to modify sampling as we learn more about the ocean environment surrounding the ACO.
Language: English
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Citation:
Title: Deep ocean current profiles, water temperatures, and echo amplitudes from bottom-moored ADCP during 2011-2013 of the Aloha Cabled Observatory (NCEI Accession 0123608)
Date:
Date: 2016-08-04
Date Type: Publication Date
Edition: 1.1
Identifier:
Organisation Name:
Role: Publisher
Contact Info:
Voice: 301-713-3277
Fax: 301-713-3300
Delivery Point: Federal Building 151 Patton Avenue
City: Asheville
Administrative Area: NC
Postal Code: 28801-5001
Country: USA
E-Mail Address: NODC.DataOfficer@noaa.gov
Online Resource: https://www.ncei.noaa.gov/
Individual Name:
Organisation Name:
Role: Resource Provider
Contact Info:
Voice: (808) 956-8082
Delivery Point: 1000 Pope Rd
City: Honolulu
Administrative Area: Hawaii
Postal Code: 96822
Country: USA
E-Mail Address: demccoy@hawaii.edu
Online Resource: https://manoa.hawaii.edu/
Organisation Name:
Role: Resource Provider
Contact Info:
City: Honolulu
Administrative Area: HI
Postal Code: 96822
Country: USA
Online Resource: https://manoa.hawaii.edu/
Organisation Name:
Role:
Contact Info:
City: Honolulu
Administrative Area: HI
Postal Code: 96822
Country: USA
Online Resource: https://manoa.hawaii.edu/
Individual Name:
Organisation Name:
Role: Author
Contact Info:
Voice: (808) 956-8082
Delivery Point: 1000 Pope Rd
City: Honolulu
Administrative Area: Hawaii
Postal Code: 96822
Country: USA
E-Mail Address: demccoy@hawaii.edu
Online Resource: https://manoa.hawaii.edu/
Organisation Name:
Role: Author
Contact Info:
City: Honolulu
Administrative Area: HI
Postal Code: 96822
Country: USA
Online Resource: https://manoa.hawaii.edu/
Point Of Contact:
Organisation Name:
Position Name: Information Services
Role: Point Of Contact
Contact Info:
Voice: 301-713-3277
Fax: 301-713-3300
Delivery Point: Federal Building 151 Patton Avenue
City: Asheville
Administrative Area: NC
Postal Code: 28801-5001
Country: USA
E-Mail Address: NCEI.Info@noaa.gov
Online Resource: https://www.ncei.noaa.gov/
Topic Category: Environment and Conservation
Keyword Collection:
Keyword: DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Associated Thesaurus: Global Change Master Directory (GCMD) Data Center Keywords
Associated Thesaurus: NCEI ACCESSION NUMBER
Associated Thesaurus: NODC DATA TYPES THESAURUS
Associated Thesaurus: NODC INSTRUMENT TYPES THESAURUS
Associated Thesaurus: NODC OBSERVATION TYPES THESAURUS
Associated Thesaurus: NODC COLLECTING INSTITUTION NAMES THESAURUS
Associated Thesaurus: NODC SUBMITTING INSTITUTION NAMES THESAURUS
Associated Thesaurus: NODC PROJECT NAMES THESAURUS
Associated Thesaurus: NODC SEA AREA NAMES THESAURUS
Keyword: oceanography
Associated Thesaurus: WMO_CategoryCode
Keyword: EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS
Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
Associated Thesaurus: Global Change Master Directory (GCMD) Science Keywords
Keyword: echo amplitude
Associated Thesaurus: Originator Keywords
Keyword: ADCP > Acoustic Doppler Current Profiler
Associated Thesaurus: Global Change Master Directory (GCMD) Instrument Keywords
Keyword: OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
Associated Thesaurus: Global Change Master Directory (GCMD) Location Keywords
Spatial Extent:
West Bounding Longitude: -158.0062
East Bounding Longitude: -158.0062
North Bounding Latitude: 22.73873
South Bounding Latitude: 22.73873
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Other Constraints: Cite as: McCoy, Daniel; University of Hawai'i at Mānoa (2016). Deep ocean current profiles, water temperatures, and echo amplitudes from bottom-moored ADCP during 2011-2013 of the Aloha Cabled Observatory (NCEI Accession 0123608). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date]
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Access Constraints: Other Restrictions
Other Constraints: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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Distribution
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Online Resource:
URL: https://accession.nodc.noaa.gov/0123608
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Function: Information
Online Resource:
URL: https://accession.nodc.noaa.gov/oas/123608
Protocol:
Application Profile:
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Description:
Function: Information
Online Resource:
URL: https://accession.nodc.noaa.gov/download/123608
Protocol:
Application Profile:
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Function: Download
Online Resource:
URL: ftp://ftp.nodc.noaa.gov/nodc/archive/arc0094/0123608/
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Application Profile:
Name:
Description:
Function: Download
Distributor Contact:
Organisation Name:
Role: Point Of Contact
Contact Info:
Voice: 301-713-3277
Fax: 301-713-3300
Delivery Point: Federal Building 151 Patton Avenue
City: Asheville
Administrative Area: NC
Postal Code: 28801-5001
Country: USA
E-Mail Address: NCEI.Info@noaa.gov
Quality
Scope: Dataset