Pacific Reef Assessment and Monitoring Program: Shallow Water Conductivity-Temperature-Depth (CTD) Profiles for selected locations in the Pacific

Near-shore shallow water Conductivity-Temperature-Depth (CTD) surveys provided vertical profiles of temperature, salinity, and turbidity providing indications for water masses and local sea water chemistry changes. These surveys were conducted to characterize the spatial structure of the physical and chemical properties of the ocean environment influencing the living coral reef resources observed during REA and towed-diver surveys. Water samples were collected at the shallow water CTD sites to examine near-shore water quality. Shallow CTD casts are vertical profiles (max 30 meter depth, downcast only) of water column conductivity, temperature, and pressure (Sea-Bird Electronics, SBE19-plus; accuracy of 0.005 S m-1 in conductivity, 0.0002C in temperature, and 0.1% in pressure). A transmissometer (Wetlabs Inc; provides profiles of beam transmittance, related to turbidity) and a dissolved oxygen sensor (Sea-Bird Electronics, SBE43; accuracy of 2% of saturation) are also attached. Data are collected by lowering the CTD in a profiling mode from a small boat at a descent rate of approximately 0.5 to 0.75m s-1 to a maximum depth of 30m. Data processing was performed using Seabird Instrument's SeaSoft SBE Data Processing Software (https://www.seabird.com/software/SBEDataProcforWindows.htm).

These data were collected for coral reef ecosystem research.

Created by CoRIS, partially updated. AMD 2015-06-03

The oceanography team collects data through a variety of methods with additional detail outlined in this paper on in situ oceanographic observations (Hoeke et al. 2009).

https://www.pifsc.noaa.gov/library/pubs/Hoeke_etal_JOO_2009.pdf

Pressure (Decibars)

Depth (Meters)

Temperature (Degrees Celsius)

Conductivity (Siemens/Meter)

Salinity (PSU)

Density (Sigma-t)

Volt 0 (Raw Voltage Auxiliary Input 0)

Volt 1 (Raw Voltage Auxiliary Input 1)

Beam Attenuation (1/meter)

Beam Transmission (Percent Transmission)

Dissolved Oxygen (mL/L)

Dissolved Oxygen (mg/L)

Dissolved Oxygen (Percent Saturation)

Fluorometry (ug/L)

#LOCATION KEYWORDS:

(Note CODE as used in data files follows locations)

Pacific Ocean,

Main Hawaiian Islands (MHI),

Hawai'i (Big Island) (HAW)

Kaua'i (KAU)

Lana'i (LAN)

Maui (MAI)

Maui - Molokini (MOI)

Molokai (MOL)

Niihau (NII)

Niihau - Kaula Rock (KAL)

Oahu (OAH)

Northwestern Hawaiian Islands (NWHI),

Papahanaumokuakea Marine National Monument,

French Frigate Shoals (FFS)

Gardner Pinnacle (GAR)

Kure Atoll (KUR)

Laysan Island (LAY)

Lisianski Island (LIS)

Maro Reef (MAR)

Midway Atoll (MID)

Necker Island (NEC)

Pearl and Hermes Atoll (PHR)

Commonwealth of the Northern Mariana Islands (CNMI) and Guam,

Agrihan (AGR)

Aguijan (Goat Is.) (AGU)

Alamagan (ALA)

Anatahan (ANA)

Asuncion Island (ASC)

Farallon de Pajaros (FDP)

Guam (GUA)

Guguan (GUG)

Maug (MAU)

Pagan (PAG)

Rota (ROT)

Saipan (SAI)

Sarigan (SAR)

Stingray Shoals (STI)

Tinian (TIN)

American Samoa (AMSM),

Manu'a Islands Group,

Ofu and Olosega Islands (OFU)

Rose Atoll (ROS)

Swains Island (SWA)

Ta'u (TAU)

Tutuila (TUT)

Pacific Remote Island Areas (PRIA),

Equatorial Central Pacific,

United States Minor Outlying Islands,

United States Phoenix Islands,

Northern Line Islands,

Central Line Islands,

Baker Island (BAK)

Howland Island (HOW)

Jarvis Island (JAR)

Johnston Atoll (JOH)

Kingman Reef (KIN)

Palmyra Atoll (PAL)

Wake Atoll (WAK)

Mariana Archipelago

American Samoa

Hawaiian Archipelago

Pacific Remote Island Areas

Not applicable

Not applicable

Send email to nmfs.pic.credinfo@noaa.gov

None

These oceanographic data are PRELIMINARY data and have not been screened for accuracy. NOAA can not be held liable for use of these data in a manner other than for perusal of preliminary oceanographic data for scientific research on coral reefs ecosystems.

None

None

See the data file for instruments used during each cast.

Data processing was performed using Seabird Instrument's SeaSoft SBE Data Processing Software (https://www.seabird.com/software/SBEDataProcforWindows.htm). Data format is discreet, tabular (formatted, space delimited ASCII) files for each profile, with a full header as provided by SeaSoft. Raw file extension is HEX, processed file extension is CNV. The header contains latitude, longitude and other location information, as well as all data processing steps and settings. All dates and times are UTC. All positions are WGS84 decimal degrees.

These oceanographic data are preliminary data and have not been screened for accuracy.

The data are believed to be complete. -9.99-E29 values in the data, where they exist, indicate that this observation/analysis was not conducted for the sample record where it appears.

The data is quality controlled by CREP personnel after the data is downloaded from the instrument.

The data resides in the PIFSC Oracle database, which is maintained and regularly backed up by PIFSC ITS.