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Summary

Short Citation
Pacific Islands Fisheries Science Center, 2025: Shallow Water Conductivity-Temperature-Depth (CTD) Profiles along a water quality gradient in Aua, American Samoa from 2022-09-13 to 2022-09-23, https://www.fisheries.noaa.gov/inport/item/68094.
Full Citation Examples

Abstract

This metadata record describes the data collected 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) from September 13 - 23, 2022. For this fly-in mission (MP2206), 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 #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.

Distribution Information

  • CSV - Comma Separated Values (Text), 411 KB

    Shallow CTD profiles collected at 18 sites in Aua, American Samoa from September 13th-23rd, 2022 across a water quality gradient by the PIFSC Ecosystem Sciences Division. Data include conductivity, temperature, pressure, depth, salinity, and density.

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, 2023: Shallow Water Conductivity-Temperature-Depth (CTD) Profiles along a water quality gradient in Aua, American Samoa from 2022-09-13 to 2022-09-23, https://www.fisheries.noaa.gov/inport/item/68094.

Controlled Theme Keywords

CONDUCTIVITY PROFILES, CORAL REEF, DENSITY, DOC/NOAA/NMFS/PIFSC/ESD, OCEAN SALINITY PROFILES, oceans, WATER TEMPERATURE

Child Items

Type Title
Entity ESD_LBSP_CTD_DataDictionary_Aua_2022

Contact Information

Point of Contact
Joy Smith
joy.smith@noaa.gov

Metadata Contact
Lori H Luers
lori.luers@noaa.gov

Extents

Geographic Area 1

-170.669° W, -170.665° E, -14.2717° N, -14.2881° S

Extent of CTD casts in Aua reef, American Samoa in 2022.

Time Frame 1
2022-09-13 - 2022-09-23

Time frame over which CTD casts which were conducted at 18 survey sites along a water quality gradient off of Aua, American Samoa