Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content
  • Feedback

    • National Coral Reef Monitoring Program: Shallow Water Conductivity-Temperature-Depth (CTD) Profiles for select locations across American Samoa from 2015 to 2023

    Metadata Updated: December 13, 2025

    The data described here result from near-shore shallow water Conductivity-Temperature-Depth (CTD) casts conducted at select sites around American Samoa as part of the ongoing National Coral Reef Monitoring Program (NCRMP). These surveys were conducted by the NOAA Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (ESD; formerly the Coral Reef Ecosystem Division) during ESD-led NCRMP missions to American Samoa in 2015, 2018, and 2023. The CTD casts provide vertical profiles (30-m max depth, downcast only) of water column conductivity, temperature, pressure, with calculated depth, salinity, and water density.

    The CTD (Sea-Bird Electronics, SBE19-plus in 2015 and 2018, RBR Concerto in 2023) was deployed from a small boat using a hand line and held just under 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 30 m. Data processing was performed using Sea-Bird Scientific SBE or RBR Ruskin Data Processing Software and the R package "oce".

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date December 3, 2025
    Metadata Created Date February 7, 2025
    Metadata Updated Date December 13, 2025
    Reference Date(s) 2016-12 (creation), 2024-08 (revision), 2024 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NMFS PIFSC

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date December 3, 2025
    Metadata Created Date February 7, 2025
    Metadata Updated Date December 13, 2025
    Reference Date(s) 2016-12 (creation), 2024-08 (revision), 2024 (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:36761
    Access Constraints Cite As: Pacific Islands Fisheries Science Center, [Date of Access]: National Coral Reef Monitoring Program: Shallow Water Conductivity-Temperature-Depth (CTD) Profiles for select locations across American Samoa from 2015 to 2023 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/36761., Access Constraints: None, Use Constraints: Please cite PIFSC Ecosystem Sciences Division (ESD) when using the data. Suggested Citation: Ecosystem Sciences Division, Pacific Islands Fisheries Science Center, 2024: National Coral Reef Monitoring Program: Shallow Water Conductivity-Temperature-Depth (CTD) Profiles for select locations across American Samoa from 2015 to 2023, https://www.fisheries.noaa.gov/inport/item/36761., Distribution Liability: 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 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.
    Bbox East Long -168.1333
    Bbox North Lat -11.04541
    Bbox South Lat -14.83054
    Bbox West Long -171.2164
    Coupled Resource
    Frequency Of Update asNeeded
    Harvest Object Id 6e4e6dcb-fede-46fc-b60b-143ec99a9d13
    Harvest Source Id c0beac72-5f43-4455-8c33-1b345fbc2dfe
    Harvest Source Title NMFS PIFSC
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage Following a 1 minute soak, CTDs are usually deployed 5-10 feet above the reef at depths ranging from 0-30 m at permanent monitoring sites established by the NOAA Fisheries, Ecosystem Sciences Division.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-171.2164, -14.83054], [-168.1333, -14.83054], [-168.1333, -11.04541], [-171.2164, -11.04541], [-171.2164, -14.83054]]]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2015-02-15
    Temporal Extent End 2015-03-28

    Didn't find what you're looking for? Suggest a dataset here.