Deep-Ocean Assessment and Reporting of Tsunamis (DART(R))
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title: Deep-Ocean Assessment and Reporting of Tsunamis (DART(R))
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date: 2005-09-02
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Anchor: DOI doi:10.7289/V5F18WNS
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individualName: George Mungov
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abstract: As part of the U.S. National Tsunami Hazard Mitigation Program (NTHMP), the Deep Ocean Assessment and Reporting of Tsunamis (DART(R)) Project is an ongoing effort to maintain and improve the capability for the early detection and real-time reporting of tsunamis in the open ocean. DART(R) stations have been sited in regions with a history of generating destructive tsunamis to ensure early detection of tsunamis and to acquire data critical to real-time forecasts. DART(R) systems consist of an anchored seafloor bottom pressure recorder (BPR) and a companion moored surface buoy for real-time communications. An acoustic link transmits data from the BPR on the seafloor to the surface buoy. The data are then relayed via an Iridium satellite link to ground stations, which demodulate the signals for immediate dissemination to NOAA's Tsunami Warning Centers, NDBC, and PMEL. The National Centers for Environmental Information (NCEI, formerly the National Geophysical Data Center--NGDC) serves as the archive center for this data and provides the historical data to users.
purpose: To ensure early detection of tsunamis and to acquire data critical to real-time forecasts
credit: * DOC/NOAA/NWS/NDBC > National Data Buoy Center, National Weather Service, NOAA, U.S. Department of Commerce* DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce
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fileDescription: Time-series showing tsunami signal
fileType: PNG
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keyword: Earth Science > Oceans > Coastal Processes > Tidal Height
keyword: Earth Science > Oceans > Coastal Processes > Sea Surface Height
keyword: Earth Science > Oceans > Ocean Waves > Significant Wave Height
keyword: Earth Science > Oceans > Ocean Waves > Tsunamis
keyword: Earth Science > Oceans > Tides > Tidal Height
keyword: Earth Science > Oceans > Tides > Tidal Range
keyword: Earth Science > Solid Earth > Tectonics > Earthquakes > Seismic Profile > Seismic Surface Waves
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keyword: In Situ Ocean-based Platforms > DART > Deep-ocean Assessment and Reporting of Tsunamis
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keyword: Ocean > Pacific Ocean
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keyword: Ocean > Pacific Ocean > Central Pacific Ocean
keyword: Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands
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keyword: Ocean > Pacific Ocean > Western Pacific Ocean
keyword: Ocean > Pacific Ocean > Western Pacific Ocean > Philippines
keyword: Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia
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keyword: Ocean > Pacific Ocean > South Pacific Ocean > Melanesia
keyword: Ocean > Pacific Ocean > South Pacific Ocean > Polynesia
keyword: Ocean > Pacific Ocean > Eastern Pacific Ocean
keyword: Ocean > Atlantic Ocean
keyword: Ocean > Atlantic Ocean > North Atlantic Ocean
keyword: Ocean > Atlantic Ocean > North Atlantic Ocean > Gulf of Mexico
keyword: Ocean > Atlantic Ocean > North Atlantic Ocean > Carribean Sea
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keyword: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
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otherConstraints: Cite as: National Oceanic and Atmospheric Administration (2005): Deep-Ocean Assessment and Reporting of Tsunamis (DART(R)). NOAA National Centers for Environmental Information. doi:10.7289/V5F18WNS [access date]
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otherConstraints: Access to this dataset is unrestricted.
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useConstraints: (MD_RestrictionCode) otherRestrictions
otherConstraints: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
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title: Real-Time Deep-Ocean Tsunami Measuring, Monitoring, and Reporting System: The NOAA DART(R) II Description and Disclosure
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date: 2005-06-04
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title: The NTHMP Tsunameter Network
date: (CI_Date)
date: 2005-01-01
dateType: (CI_DateTypeCode) publication
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organisationName: Gonzalez, F.I.
role: (CI_RoleCode) originator
citedResponsibleParty: (CI_ResponsibleParty)
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name: Natural Hazards
issueIdentification: 35(1)
otherCitationDetails: U.S. National Tsunami Hazard Mitigation Program, 25-39
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topicCategory: (MD_TopicCategoryCode) oceans
extent: (EX_Extent)
description: U.S. DART Network
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westBoundLongitude: -175.58
eastBoundLongitude: 178.3
southBoundLatitude: -46.92
northBoundLatitude: 57.5
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1983-10-19
endPosition:
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contentInfo: (MI_CoverageDescription)
attributeDescription:
RecordType: Point: A location on the surface of the Earth.
contentType: (MD_CoverageContentTypeCode) physicalMeasurement
dimension: (MD_Band)
sequenceIdentifier:
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aName: Latitude
attributeType: (unknown)
descriptor: Latitude is measured from the equator, with positive values going north and negative values going south.
maxValue:
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minValue:
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units:
UnitDefinition:
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name: decimal degrees
dimension: (MD_Band)
sequenceIdentifier:
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attributeType: (unknown)
descriptor: Longitude is measured from the Prime Meridian (which is the longitude that runs through Greenwich, England), with positive values going east and negative values going west.
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minValue:
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aName: Depth
attributeType: (unknown)
descriptor: The ship-measured depth (meters) of the ocean at which the buoy was moored. The ship-measured depth is not as accurate as the BPR-measured pressure. To obtain the most precise depth, convert the bottom pressure to depth.
maxValue:
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minValue:
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descriptor: GMT Year, Month, Day and time the BPR package was deployed from the ship in GMT
minValue:
Real: 19980102
units:
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name: Year, Month, Day in the form YYYYMMDD
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aName: Recovery_Date
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descriptor: GMT Year, Month, Day and time the BPR package was recovered or there was an attempt to recover the BPR package from the seafloor.
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units:
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attributeType: (unknown)
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aName: Sample_Rate
attributeType: (unknown)
descriptor: This is the period, in seconds, at which the buoy makes a measurement.
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minValue:
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units:
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identifier: seconds
name: seconds
rangeElementDescription: (MI_RangeElementDescription)
name: Station_ID
definition: This is the Pacific Marine Environment Laboratory's (PMEL's) buoy identification number. The Station ID contains letters (e.g. "AK") and numbers (e.g. "10"). For example, "AK10", indicates that the buoy was moored in the waters off of Alaska and was the 10th buoy installed. The prefixes used by PMEL are: AK = Alaska, WC = West Coast (e.g. off Oregon's coast), EP = Equatorial Pacific, HI = Hawaii, D = DART(R) buoys (the name given to the most recent deployments), RT = Real Time (the name given to the TESTS of the most recent deployments)
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Record: https://www.ngdc.noaa.gov/seg/hazard/DARTData.shtml: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce
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definition: Unique identifier for the row in the database table.
rangeElement:
Record: The value is a unique identifier and must not be null.
rangeElementDescription: (MI_RangeElementDescription)
name: Location
definition: General location of the buoy.
rangeElement:
Record: Location is not from a pre-determined set of values, it is a free text field.
rangeElementDescription: (MI_RangeElementDescription)
name: Data_Quality
definition: Area for comments about the quality of the data in the file.
rangeElement:
Record: Not a predefined set of values. This is a freetext area and is not required.
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name: Deployment_Platform
definition: The name of the platform (ship) that deployed the BPR.
rangeElement:
Record: This is not a predefined set of values. Ship name is a freeform text field up to 25 characters in length, assigned by PMEL.
rangeElementDescription: (MI_RangeElementDescription)
name: Recovery_Platform
definition: The name of the platform (ship) that recoverd the BPR.
rangeElement:
Record: This is not a predefined set of values. Ship name is a freeform text field up to 25 characters in length, assigned by PMEL.
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fees: In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
orderingInstructions: Contact NCEI for other distribution options and instructions.
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linkage: https://www.ngdc.noaa.gov/hazard/DARTData.shtml
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linkage: https://www.ncei.noaa.gov/maps/hazards/?layers=4
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name: Natural Hazards Map Viewer - DART(R) Stations
description: Search and view DART(R) stations in relation to historical tsunami events and observations
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linkage: https://www.ngdc.noaa.gov/hazard/dart
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name: Natural Hazards Website
description: Data, products and services for natural hazards.
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dataQualityInfo: (DQ_DataQuality)
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levelDescription: (MD_ScopeDescription)
other: NOAA National Centers for Environmental Information
lineage: (LI_Lineage)
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description: NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
dateTime:
DateTime: 2015-04-22T00:00:00
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
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measureDescription: None
result: (unknown)
lineage: (LI_Lineage)
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description: BPR data received at NGDC
dateTime:
DateTime: 2005-09-02T00:00:00
processor: (CI_ResponsibleParty)
individualName: George Mungov
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (303) 497-4603
facsimile: (303) 497-6513
address: (CI_Address)
deliveryPoint: 325 Broadway, Mail Code E/GC1
city: Boulder
administrativeArea: CO
postalCode: 80305-3328
country: USA
electronicMailAddress: george.mungov@noaa.gov
hoursOfService: 7:30-5:00 Mountain
contactInstructions: Contact Data Center
role: (CI_RoleCode) processor
source: #DART-ed_20050902
processStep: (LE_ProcessStep)
description: Reprocessed data files so that 3 columns were represented; DATE, TEMP, PRESSURE. Files were renamed to the following convention - SSSS_YYYY-ed.dat. Where SSSS is the station_id, YYYY is year of deployment. No data was lost.
dateTime:
DateTime: 2006-03-02T00:00:00
processor: (CI_ResponsibleParty)
individualName: George Mungov
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (303) 497-4603
facsimile: (303) 497-6513
address: (CI_Address)
deliveryPoint: 325 Broadway, Mail Code E/GC1
city: Boulder
administrativeArea: CO
postalCode: 80305-3328
country: USA
electronicMailAddress: George.Mungov@noaa.gov
hoursOfService: 7:30-5:00 Mountain
contactInstructions: Contact Data Center
role: (CI_RoleCode) processor
source: #DART-ed_20050902
output: #DART_20060302
processStep: (LE_ProcessStep)
description: Calibrated DART(R) data received.
dateTime:
DateTime: 2006-03-31T00:00:00
processor: (CI_ResponsibleParty)
individualName: George Mungov
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (303) 497-4603
facsimile: (303) 497-6513
address: (CI_Address)
deliveryPoint: 325 Broadway, Mail Code E/GC1
city: Boulder
administrativeArea: CO
postalCode: 80305-3328
country: USA
electronicMailAddress: George.Mungov@noaa.gov
hoursOfService: 7:30-5:00 Mountain
contactInstructions: Contact Data Center
role: (CI_RoleCode) processor
source: #DART-cl_20060331
processStep: (LE_ProcessStep)
description: Edited original data archived in the following directory: insitu_ocean:dart_bpr:data:ed:ed_orig
dateTime:
DateTime: 2006-03-29T00:00:00
processor: (CI_ResponsibleParty)
individualName: George Mungov
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (303) 497-4603
facsimile: (303) 497-6513
address: (CI_Address)
deliveryPoint: 325 Broadway, Mail Code E/GC1
city: Boulder
administrativeArea: CO
postalCode: 80305-3328
country: USA
electronicMailAddress: George.Mungov@noaa.gov
hoursOfService: 7:30-5:00 Mountain
contactInstructions: Contact Data Center
role: (CI_RoleCode) processor
source: #DART-ed_20050902
processStep: (LE_ProcessStep)
description: Calibrated data archived in the following directory: insitu_ocean:dart_bpr:data:cal:cal_orig
dateTime:
DateTime: 2006-03-29T00:00:00
processor: (CI_ResponsibleParty)
individualName: George Mungov
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (303) 497-4603
facsimile: (303) 497-6513
address: (CI_Address)
deliveryPoint: 325 Broadway, Mail Code E/GC1
city: Boulder
administrativeArea: CO
postalCode: 80305-3328
country: USA
electronicMailAddress: George.Mungov@noaa.gov
hoursOfService: 7:30-5:00 Mountain
contactInstructions: Contact Data Center
role: (CI_RoleCode) processor
source: #DART-cl_20060331
processStep: (LE_ProcessStep)
description: received tidal constants
dateTime:
DateTime: 2006-08-04T00:00:00
processor: (CI_ResponsibleParty)
individualName: George Mungov
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (303) 497-4603
facsimile: (303) 497-6513
address: (CI_Address)
deliveryPoint: 325 Broadway, Mail Code E/GC1
city: Boulder
administrativeArea: CO
postalCode: 80305-3328
country: USA
electronicMailAddress: George.Mungov@noaa.gov
hoursOfService: 7:30-5:00 Mountain
contactInstructions: Contact Data Center
role: (CI_RoleCode) processor
source: #tidal_constituents_20060804
processStep: (LE_ProcessStep)
description: tidal constituents archived:insitu_ocean:dart_bpr:data:tcon
dateTime:
DateTime: 2006-09-27T00:00:00
processor: (CI_ResponsibleParty)
individualName: George Mungov
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (303) 497-4603
facsimile: (303) 497-6513
address: (CI_Address)
deliveryPoint: 325 Broadway, Mail Code E/GC1
city: Boulder
administrativeArea: CO
postalCode: 80305-3328
country: USA
electronicMailAddress: George.Mungov@noaa.gov
hoursOfService: 7:30-5:00 Mountain
contactInstructions: Contact Data Center
role: (CI_RoleCode) processor
source: #tidal_constituents_20060804
processStep: (LE_ProcessStep)
description: Raw BPR data received at NGDC.
dateTime:
DateTime: 2008-09-24T00:00:00
processor: (CI_ResponsibleParty)
individualName: George Mungov
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (303) 497-4603
facsimile: (303) 497-6513
address: (CI_Address)
deliveryPoint: 325 Broadway, Mail Code E/GC1
city: Boulder
administrativeArea: CO
postalCode: 80305-3328
country: USA
electronicMailAddress: George.Mungov@noaa.gov
hoursOfService: 7:30-5:00 Mountain
contactInstructions: Contact Data Center
role: (CI_RoleCode) processor
source: #DART-Raw
source: (LI_Source)
description: Source Contribution: DVDs of edited historic readings. Source Type: CD-ROM
sourceCitation: (CI_Citation)
title: Deep-Ocean Assessment and Reporting of Tsunamis (DART(R))
date: (CI_Date)
date: 2005-09-02
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (206) 526-6239
facsimile: (206) 526-6815
address: (CI_Address)
deliveryPoint: NOAA/OAR/PMEL R/PMEL 7600 Sand Point Way, NE
city: Seattle
administrativeArea: WA
postalCode: 98115-6349
country: USA
role: (CI_RoleCode) originator
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1998-07-02
endPosition: 2003-01-01
source: (LI_Source)
description: Source Contribution: Received 2 DVD's of calibrated historic DART(R) data. Source Type: CD-ROM
sourceCitation: (CI_Citation)
title: Deep-Ocean Assessment and Reporting of Tsunamis (DART(R))
date: (CI_Date)
date: 2006-03-31
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (206) 526-6239
facsimile: (206) 526-6815
address: (CI_Address)
deliveryPoint: NOAA/OAR/PMEL R/PMEL 7600 Sand Point Way, NE
city: Seattle
administrativeArea: WA
postalCode: 98115-6349
country: USA
role: (CI_RoleCode) originator
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1998-07-02
endPosition: 2003-01-01
source: (LI_Source)
description: Source Contribution: Tidal harmonic constants received. Source Type: Online
sourceCitation: (CI_Citation)
title: Deep-Ocean Assessment and Reporting of Tsunamis (DART(R))
date: (CI_Date)
date: 2006-08-04
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: (206) 526-6239
facsimile: (206) 526-6815
address: (CI_Address)
deliveryPoint: NOAA/OAR/PMEL R/PMEL 7600 Sand Point Way, NE
city: Seattle
administrativeArea: WA
postalCode: 98115-6349
country: USA
role: (CI_RoleCode) originator
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1983-10-19
endPosition: 2004-05-11
source: (LI_Source)
description: Source Contribution: NDBC sends raw BPR data to NCEI (formerly NGDC) for archive. Source Type: DVD
sourceCitation: (CI_Citation)
title: Deep-Ocean Assessment and Reporting of Tsunamis (DART(R))
date: (CI_Date)
date: 2008-10-10
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NWS/NDBC > National Data Buoy Center, National Weather Service, NOAA, U.S. Department of Commerce
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: 228-688-2805
address: (CI_Address)
deliveryPoint: National Data Buoy Center 1007 Balch Blvd.
city: Stennis Space Center
administrativeArea: MS
postalCode: 39529
country: USA
electronicMailAddress: webmaster.ndbc@noaa.gov
role: (CI_RoleCode) originator
sourceExtent: (EX_Extent)
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 2006-10-27
endPosition: 2008-09-24
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
level: (MX_ScopeCode) platformSeries
levelDescription: (MD_ScopeDescription)
other: Mission History
lineage: (LI_Lineage)
processStep: (LE_ProcessStep)
description: Mission Start Date
dateTime:
DateTime: 1994-01-01T00:00:00
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metadataMaintenance: (MD_MaintenanceInformation)
maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) annually
maintenanceNote: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version FGDC-STD-012-2002) using the 2012-11-07 version of the FGDC RSE to ISO 19115-2 transform.
maintenanceNote: Translated from FGDC 2014-01-31T18:16:53.377-07:00
maintenanceNote: This record was automatically modified on 2015-09-17 to include references to NCEI where applicable.
maintenanceNote: This record was modified on 2022-06-03 to update the map viewer URL.
contact: (CI_ResponsibleParty)
organisationName: NOAA National Centers for Environmental Information
positionName: Metadata Specialist
role: (CI_RoleCode) editor
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acquisitionInformation: (MI_AcquisitionInformation)
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: Benthos Telesonar acoustic modem
type: Acoustic Modem
description: Collection Type: Modem, Collection Description: None
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: 32-bit, 3.3 volt Motorola 68322 microcontroller
type: Computer
description: Collection Type: Data communication, Properties Description: The embedded computer system in both the buoy and the tsunameter was designed around the32-bit, 3.3 volt Motorola 68332 microcontroller, and was programmed in C. It was built to beenergy efficient for long-term battery powered deployment. The computer has 4 Mb of flashmemory, a 12-bit A/D converter with 8 input channels, two RS232 channels, a hardwarewatchdog timer, a real-time clock, and 512 bytes of RAM. The embedded computer implementsand regulates the primary functions of the surface and seafloor units: transmitting datacommunications, running the tsunami detection algorithm, storing and retrieving water columnheights, generating checksums, and conducting automatic mode switching., Collection Description: None
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: Motorola 9522 L-Band Iridium transceiver
type: Iridium transceiver
description: Collection Type: Satellite, Properties Description: A Motorola 9522 L-Band Iridium transceiver from NAL Research provides data connectivity viathe Iridium Satellite Network. The buoy computer connects to the transceiver using an RS232serial port. Data is transferred at 2400 baud similarly to the familiar dial-up modem connections.A typical Standard Mode report takes approximately 30 seconds, including the time it takes tocomplete the connection, transmit the data, and disconnect., Collection Description: None
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: Leadtek model 9546 GPS receiver
type: GPS
description: Collection Type: Receiver, Properties Description: A Leadtek model 9546 GPS receiver is used to maintain the buoy's computer clock accuracy to within 1 second of GMT. Additionally, a GPS position is reported once per day to monitor buoy position., Collection Description: None
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: 0-10,000 psi model 410K Digiquartz unit
type: Pressure Sensor
description: Collection Type: Pressure, Properties Description: The DART(R) II pressure sensor is a 0-10,000 psi model 410K Digiquartz? unit manufactured byParoscientific, Inc.9 The transducers use a very thin quartz crystal beam, electrically induced tovibrate at its lowest resonant mode. The oscillator is attached to a Bourdon tube that is open onone end to the ocean environment10. The pressure sensor outputs two frequency-modulatedsquare waves, proportional to the ambient pressure and temperature. The temperature data isused to compensate for the thermal effects on the pressure-sensing element., Collection Description: None
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: Reciprocal Counter
type: Reciprocal Counter
description: Collection Type: pressure and temperature signals, Properties Description: The high resolution precision reciprocal counting circuit continuously measures the pressureand temperature signals simultaneously, integrating them over the entire sampling window,nominally set to 15 seconds. There is no dead period between the sampling windows. Thecircuit has a sub-millimeter pressure and sub-millidegree temperature least-count resolution.The reference frequency for the reciprocal counter is derived from a low power, very stable, 2.097152 MHz, temperature-compensated crystal oscillator. A real time calendar-clock in thecomputer also uses this reference for a time base. At the end of each sampling window, thecomputer reads the pressure and temperature data and stores the data in a flash memory card.A 15-second sampling period generates about 18 megabytes of data per year., Collection Description: None
instrument: (MI_Instrument)
identifier: (MD_Identifier)
code: Geometrics 900-45
type: Tilt Sensor
description: Collection Type: Tilt, Properties Description: Each tsunameter has a Geometrics 900-45 tilt sensor mounted in the base of one of thehousings. This is used to determine the orientation of the acoustic transducer when the systemhas settled on the seafloor. If the tilt is greater than 10 degrees the tsunameter can berecovered and redeployed. The watch circle of the surface buoy could carry it out of the acousticprojection cone from the tsunameter if the angle from the vertical is too great., Collection Description: None
operation: (MI_Operation)
description: To reduce the impact of tsunamis through hazard assessment, warning guidance, and mitigation.
identifier: (MD_Identifier)
code: National Tsunami Hazard Mitigation Program (NTHMP)
status: (unknown)
parentOperation: (inapplicable)
platform: (MI_Platform)
identifier: (MD_Identifier)
code: DART(R) > Deep-ocean Assessment and Reporting of Tsunamis
description: The DART(R) system consists of a seafloor bottom pressure recording (BPR) system capable of detecting tsunamis as small as 1 cm, and a moored surface buoy for real-time communications. An acoustic link is used to transmit data from the BPR on the seafloor to the surface buoy. The data are then relayed via a GOES satellite link to ground stations, which demodulate the signals for immediate dissemination to NOAA's Tsunami Warning Centers and PMEL.
sponsor: (CI_ResponsibleParty)
organisationName: DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce
role: (CI_RoleCode) sponsor
sponsor: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NWS/NDBC > National Data Buoy Center, National Weather Service, NOAA, U.S. Department of Commerce
role: (CI_RoleCode) sponsor
instrument: (missing)
