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Dataset Overview | National Centers for Environmental Information (NCEI)

Shallow Water Conductivity-Temperature-Depth (CTD) Profiles of Aua Reef along a water quality gradient in American Samoa from 2022-09-13 to 2022-09-23 (NCEI Accession 0278377)

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The data described here is from near-shore shallow water Conductivity-Temperature-Depth (CTD) casts conducted in Aua Reef, American Samoa, by scientists of the Ecosystem Sciences Division (ESD) of the NOAA Pacific Islands Fisheries Science Center (PIFSC). The NOAA Fisheries, Ecosystem Sciences Division established 18 survey sites along the water quality gradient near land-based source pollution. This is part of a larger collection of datasets collected as part of the CRCP-funded project 'Linking watershed management activities to reef health in American Samoa' (project no. 31303).

The CTD casts provide vertical profiles (5-m max depth, downcast only) of water column conductivity, temperature, and pressure (Sea-Bird Electronics, SBE19-plus), with calculated depth, salinity, and water density.

The CTD cast was conducted by snorkel. The CTD soaked at the surface for 1 minute to cycle water through the instrument and tubing. Afterward, data were collected by lowering the CTD in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a maximum depth of 5 m.
  • Cite as: Ecosystem Sciences Division, NOAA Pacific Islands Fisheries Science Center (2023). Shallow Water Conductivity-Temperature-Depth (CTD) Profiles of Aua Reef along a water quality gradient in American Samoa from 2022-09-13 to 2022-09-23 (NCEI Accession 0278377). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278377. Accessed [date].
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2022-09-13 to 2022-09-23
Spatial Bounding Box Coordinates
West: -170.669
East: -170.665
South: -14.2881
North: -14.2717
Spatial Coverage Map
General Documentation
Associated Resources
  • Shallow Water Conductivity-Temperature-Depth (CTD) Profiles along a water quality gradient in Aua, American Samoa from 2022-09-13 to 2022-09-23
  • Hoeke, R., Gove, J., Smith, E., Fisher-Pool, P., Lammers, M., Merritt, D., Vetter, O., Young, C., Wong, K., & Brainard, R. (2009). Coral reef ecosystem integrated observing system: In-situ oceanographic observations at the US Pacific islands and atolls. Journal of Operational Oceanography, 2(2), 3–14. https://doi.org/10.1080/1755876x.2009.12027737
Publication Dates
  • publication: 2023-06-02
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Submission Package ID: 6KBGEG
Purpose The focal point of this project was to establish a comprehensive biological, water quality, and carbonate chemistry baseline for Aua reef. This work aims at identifying measurable spatial differences in the structure and composition of the benthic and coral community at Aua that can be explained by measurable spatial patterns of water quality (nutrients and sediments) and water carbonate chemistry (pH and Alkalinity). This work is of fundamental importance for the development of the Aua Watershed Management Plan, and will enable Federal and jurisdictional resource managers to more effectively assess the effectiveness of watershed management actions reducing land-based pollution and impacts to the adjacent coral reef ecosystems.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Ecosystem Sciences Division, NOAA Pacific Islands Fisheries Science Center (2023). Shallow Water Conductivity-Temperature-Depth (CTD) Profiles of Aua Reef along a water quality gradient in American Samoa from 2022-09-13 to 2022-09-23 (NCEI Accession 0278377). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278377. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Points of Contact
Publishers
Acknowledgments
  • Related Funding Agency: US DOC; NOAA; NOS; Coral Reef Conservation Program
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
CoRIS Discovery Thesaurus
  • Numeric Data Sets > Oceanography
CoRIS Theme Thesaurus
  • EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > In Situ Physical
  • EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
  • EARTH SCIENCE > Oceans > Ocean Pressure > Sea level Pressure
  • EARTH SCIENCE > Oceans > Ocean Pressure > Water Pressure
  • EARTH SCIENCE > Oceans > Ocean Temperature > Thermocline > Profile
  • EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature
  • EARTH SCIENCE > Oceans > Salinity/Density > Conductivity
  • EARTH SCIENCE > Oceans > Salinity/Density > Density
  • EARTH SCIENCE > Oceans > Salinity/Density > Salinity
Global Change Master Directory (GCMD) Science Keywords Provider Keywords
  • LBSP
  • land-based source pollution
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Contributing Data Centers
  • CRED
  • CREP
  • Coral Reef Ecosystem Division
  • Coral Reef Ecosystem Program
  • ESD
  • Ecosystem Sciences Division
  • PIFSC
  • Pacific Islands Fisheries Science Center
Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS CoRIS Place Thesaurus
  • COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000)
  • COUNTRY/TERRITORY > United States of America > American Samoa > Tutuila Island > Aua (14S170W0010)
  • OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000)
  • OCEAN BASIN > Pacific Ocean > Pago Pago Harbor > Aua (14S170W0010)
Global Change Master Directory (GCMD) Location Keywords
Project keywords NODC PROJECT NAMES THESAURUS CRCP Project
  • 31303
  • Linking watershed management actions to reef health in American Samoa
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Ecosystem Sciences Division, NOAA Pacific Islands Fisheries Science Center (2023). Shallow Water Conductivity-Temperature-Depth (CTD) Profiles of Aua Reef along a water quality gradient in American Samoa from 2022-09-13 to 2022-09-23 (NCEI Accession 0278377). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0278377. Accessed [date].
Access Constraints
  • Use liability: 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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  • 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.
Lineage information for: dataset
Processing Steps
  • 2023-06-02T14:32:36Z - NCEI Accession 0278377 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: CONDUCTIVITY (measured); Units: siemens; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: Following a 1 minute soak, the CTD was lowered in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a depth of 0-5 m at 18 sites along the water quality gradient in Aua, American Samoa established by the NOAA Fisheries, Ecosystem Sciences Division.; Data Quality Method: RBR Concerto3 CTD sensor: Conductivity - measurement range: 0-85 mS/cm; accuracy: +/- 0.003 mS/cm; stability: 0.010 mS/cm per year; resolution: 0.001 mS/cm;.
  • Parameter or Variable: DEPTH - SENSOR (calculated); Units: meter; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: Following a 1 minute soak, the CTD was lowered in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a depth of 0-5 m at 18 sites along the water quality gradient in Aua, American Samoa established by the NOAA Fisheries, Ecosystem Sciences Division..
  • Parameter or Variable: HYDROSTATIC PRESSURE (measured); Units: decibar; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: Following a 1 minute soak, the CTD was lowered in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a depth of 0-5 m at 18 sites along the water quality gradient in Aua, American Samoa established by the NOAA Fisheries, Ecosystem Sciences Division.; Data Quality Method: RBR Concerto3 CTD sensor: Pressure - measurement range: 0-600 m; accuracy: +/- 0.05%; stability: +/- 0.05% per year; resolution: 0.001%.
  • Parameter or Variable: SALINITY (calculated); Units: practical salinity unit; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: Following a 1 minute soak, the CTD was lowered in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a depth of 0-5 m at 18 sites along the water quality gradient in Aua, American Samoa established by the NOAA Fisheries, Ecosystem Sciences Division..
  • Parameter or Variable: WATER DENSITY (calculated); Units: kg/m^3; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: Following a 1 minute soak, the CTD was lowered in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a depth of 0-5 m at 18 sites along the water quality gradient in Aua, American Samoa established by the NOAA Fisheries, Ecosystem Sciences Division..
  • Parameter or Variable: WATER TEMPERATURE (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: Following a 1 minute soak, the CTD was lowered in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a depth of 0-5 m at 18 sites along the water quality gradient in Aua, American Samoa established by the NOAA Fisheries, Ecosystem Sciences Division.; Data Quality Method: RBR Concerto3 CTD sensor: Temperature - measurement range: -5-35 deg C; accuracy: +/-0.002 deg C; stability: 0.002 deg C per year; resolution: 0.00005 deg C;.
Acquisition Information (collection)
Instrument
  • CTD
Platform
  • CHARTERED VESSEL
Last Modified: 2024-02-21T13:44:27Z
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