gov.noaa.nodc:0139480 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-04-17T21:12:27Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Nutrients, sedimentation and total suspended solids in the St. Thomas East End Reserves in the Caribbean Sea from 2012-01-16 to 2013-11-25 (NCEI Accession 0139480) 2016-01-15 publication 2015-12-21 creation NOAA National Centers for Environmental Information gov.noaa.nodc:0139480 NCEI Archive Management System 0139480 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Anthony S. Pait US DOC/NOAA/NOS/NCCOS/Center for Coastal Monitoring and Assessment (NCCOS/CCMA) tony.pait@noaa.gov resourceProvider US DOC/NOAA/NOS/NCCOS/Center for Coastal Monitoring and Assessment (NCCOS/CCMA) resourceProvider Anthony S. Pait US DOC/NOAA/NOS/National Centers for Coastal Ocean Science/Center for Sponsored Coastal Ocean Research (NCCOS/CSCOR) tony.pait@noaa.gov http://www.cop.noaa.gov HTTP US DOC/NOAA/NOS/National Centers for Coastal Ocean Science/Center for Sponsored Coastal Ocean Research (NCCOS/CSCOR) website Institution web page information principalInvestigator Pait, Anthony S. NOAA National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment tony.pait@noaa.gov http://www.cop.noaa.gov HTTP US DOC/NOAA/NOS/National Centers for Coastal Ocean Science/Center for Sponsored Coastal Ocean Research (NCCOS/CSCOR) website Institution web page information author Galdo, Frank R. The University of the Virgin Islands https://www.uvi.edu/ HTTPS University of the Virgin Islands (UVI) website Institution web page information author Hartwell, S. Ian NOAA National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment Ian.Hartwell@noaa.gov http://www.cop.noaa.gov HTTP US DOC/NOAA/NOS/National Centers for Coastal Ocean Science/Center for Sponsored Coastal Ocean Research (NCCOS/CSCOR) website Institution web page information author Mason, Andrew L. NOAA National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment http://www.cop.noaa.gov HTTP US DOC/NOAA/NOS/National Centers for Coastal Ocean Science/Center for Sponsored Coastal Ocean Research (NCCOS/CSCOR) website Institution web page information author Apeti, Dennis A. NOAA National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment http://www.cop.noaa.gov HTTP US DOC/NOAA/NOS/National Centers for Coastal Ocean Science/Center for Sponsored Coastal Ocean Research (NCCOS/CSCOR) website Institution web page information author Jeffrey, Christopher F.G. NOAA National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment http://www.cop.noaa.gov HTTP US DOC/NOAA/NOS/National Centers for Coastal Ocean Science/Center for Sponsored Coastal Ocean Research (NCCOS/CSCOR) website Institution web page information author Hoffman, Anne Marie The Nature Conservancy https://www.nature.org/en-us/ HTTPS The Nature Conservancy website Institution web page information author Pittman, Simon J. NOAA National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment http://www.cop.noaa.gov HTTP US DOC/NOAA/NOS/National Centers for Coastal Ocean Science/Center for Sponsored Coastal Ocean Research (NCCOS/CSCOR) website Institution web page information author US DOC/NOAA/NOS/NCCOS/Center for Coastal Monitoring and Assessment (NCCOS/CCMA) contributor tableDigital This data set contains the results from monitoring in the St. Thomas East End Reserves (STEER) in St. Thomas, USVI, from January 2012 to November 2013. The monitoring was conducted by project partners at the University of the Virgin Islands, and was part of a larger project to conduct an integrated assessment of the STEER. The data set includes measurements of nitrate, nitrate, ammonium, urea, orthophosphate, dissolved inorganic nitrogen, dissolved organic nitrogen, total nitrogen, total phosphorus, orthophosphate, bulk sediment deposition, terrigenous, organic, and carbonate sediment fractions, and total suspended solids (TSS). The nutrient, sedimentation and TSS monitoring was part of a larger integrated assessment project in the STEER, to assess the presence and effects of LBSP. The project was requested by local partners. completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0139480 Preview graphic PNG 0139480 NCEI ACCESSION NUMBER 2015-10-05 publication AMMONIUM (NH4) CHLOROPHYLL A Dissolved Organic Nitrogen DISSOLVED OXYGEN NITRATE NITRITE pH SALINITY - SURFACE WATER SEDIMENTS - DRY WEIGHT Total nitrogen TOTAL PHOSPHORUS turbidity UREA WATER TEMPERATURE theme NODC DATA TYPES THESAURUS multi-parameter water quality sensor instrument NODC INSTRUMENT TYPES THESAURUS in situ laboratory analyses theme NODC OBSERVATION TYPES THESAURUS US DOC/NOAA/NOS/NCCOS/Center for Coastal Monitoring and Assessment dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS US DOC/NOAA/NOS/NCCOS/Center for Coastal Monitoring and Assessment dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Coral Reef Conservation Program (CRCP) CORAL REEF STUDIES project NODC PROJECT NAMES THESAURUS Caribbean Sea place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/NOS/NCCOS > National Centers for Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian 534 Characterization of Land-Based Sources of Pollution and Effects in the St. Thomas East End Reserve (STEER): Year 2 project CRCP Project Numeric Data Sets > Chemistry theme CoRIS Discovery Thesaurus EARTH SCIENCE > Oceans > Ocean Chemistry > Ammonia EARTH SCIENCE > Oceans > Ocean Chemistry > Chlorophyll EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrate EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrite EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrogen EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrogen > Dissolved Inorganic EARTH SCIENCE > Oceans > Ocean Chemistry > Nitrogen > Dissolved Organic EARTH SCIENCE > Oceans > Ocean Chemistry > Oxygen EARTH SCIENCE > Oceans > Ocean Chemistry > Phosphate EARTH SCIENCE > Oceans > Ocean Chemistry > Phosphorus EARTH SCIENCE > Oceans > Ocean Chemistry > pH EARTH SCIENCE > Oceans > Ocean Optics > Turbidity EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature EARTH SCIENCE > Oceans > Salinity/Density > Salinity theme CoRIS Theme Thesaurus EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SURFACE SALINITY EARTH SCIENCE > OCEANS > MARINE SEDIMENTS EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITROGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN OPTICS > TURBIDITY EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > St. Thomas > St. Thomas (18N064W0033) OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > Leeward Islands > St. Thomas (18N064W0033) place CoRIS Place Thesaurus OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Y41RB5 Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Pait, Anthony S.; Galdo, Frank R.; Hartwell, S. Ian; Mason, Andrew L.; Apeti, Dennis A.; Jeffrey, Christopher F.G.; Hoffman, Anne Marie; Pittman, Simon J. (2016). Nutrients, sedimentation and total suspended solids in the St. Thomas East End Reserves in the Caribbean Sea from 2012-01-16 to 2013-11-25 (NCEI Accession 0139480). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0139480. Accessed [date]. 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. otherRestrictions 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. An assessment of nutrients, sedimentation, and total suspended solids (TSS) in the St. Thomas East End Reserves (STEER) 2015-04 publication https://coast.noaa.gov/coral_storage/library/NOAA/CRCP/project/534/Nutrients_Sedimentation_TSS_Report_FINAL.pdf HTTPS An Assessment of Nutrients, Sedimentation, and Total Suspended Solids (TSS) in the St. Thomas East End Reserves (STEER) This is the fifth report from a project to assess land-based sources of pollution (LBSP) and their effects, and to characterize the biological community within the St. Thomas East End Reserves (STEER) in St. Thomas, USVI. Here we summarize the results of nearly two years of monthly monitoring for nutrients, sedimentation, and total suspended solids (TSS) at six sites in the STEER. information Pait, A.S. author Hartwell, S.I. author Mason, A.L. author Apeti, D.A. author Jeffrey, C.F.G. author Pittman, S.J. author Hoffman, A.M. author Galdo Jr., F.R. author National Oceanic and Atmospheric Administration (NOAA) https://www.noaa.gov/ HTTPS National Oceanic and Atmospheric Administration (NOAA) website Institution web page information publisher documentDigital Technical Memorandum 184 Pait, A. S., Hartwell, S. I., Mason, A. L., Apeti, D. A., Jeffrey, C. F. G., Pittman, S. J., Hoffman, A. M., Galdo Jr., F. R. April 2015. An assessment of nutrients, sedimentation, and Total Suspended Solids (TSS) in the St. Thomas East End Reserves (STEER). NOAA Technical Memorandum NOS/NCCOS 184. Silver Spring, MD. 74 pp. crossReference eng; USA utf8 environment oceans -64.87988 -64.83003 18.30069 18.31385 2012-01-16 2013-11-25 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact 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. Contact NCEI for other distribution options and instructions. Originator data format 6.56 https://www.ncei.noaa.gov/archive/accession/0139480 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/139480 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/139480 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0084/0139480/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0139480 v1.1 was published. 2016-01-15T16:47:41Z NCEI Accession 0139480 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0139480/1.1 HTTPS NCEI Accession 0139480 v1.1 published 2016-01-15T16:47:41Z download dataset Data Type: SALINITY - SURFACE WATER (measured); Units: ppt; Observation Type: in situ; Sampling Instrument: YSI - handheld multi-parameter instrument; Sampling and Analyzing Method: Probe submerged one half meter below surface of water; Data Quality Information: Daily calibration of instrubmentation Data Type: turbidity (measured); Units: NTU; Observation Type: in situ; Sampling Instrument: Hydrolab; Sampling and Analyzing Method: Probe submerged one half meter below surface of water; Data Quality Information: Daily calibration Data Type: pH (measured); Units: pH units; Observation Type: in situ; Sampling Instrument: Hydrolab; Sampling and Analyzing Method: Probe submerged one half meter below surface of water; Data Quality Information: Daily calibration Data Type: CHLOROPHYLL A (measured); Units: ug/l; Observation Type: in situ; Sampling Instrument: Hydrolab; Sampling and Analyzing Method: Probe submerged one half meter below the surface of water; Data Quality Information: Daily calibration Data Type: DISSOLVED OXYGEN (measured); Units: mg/l; Observation Type: in situ; Sampling Instrument: YSI - handheld multi-parameter instrument; Sampling and Analyzing Method: Probe submerged one half meter below surface of water; Data Quality Information: Daily calibration Data Type: TEMPERATURE - WATER [WATER TEMPERATURE] (measured); Units: degrees Celsius; Observation Type: in situ; Sampling Instrument: YSI - handheld multi-parameter instrument; Sampling and Analyzing Method: Probe submerged one half meter below surface of water; Data Quality Information: Daily calibration Data Type: NO3- and NO2- (measured); Units: mg/l N; Observation Type: laboratory analysis; Sampling Instrument: Technicon II nutrient analyzer; Sampling and Analyzing Method: At each site, duplicate samples were collected for the analysis of dissolved nutrients. Samples were kept in the dark, and then filtered at the time of collection into acid-washed 125 ml high density polyethylene (HDPE) bottles, using 60 ml syringes equipped with disposable Millipore Sterivex 0.22 μm filter units. The syringe was first rinsed with several full volumes of site water. Next, the syringe was refilled, the Sterivex filter attached, and a full volume of site water was pushed through the filter. The sample bottles were rinsed three times with filtered site water. The filter was removed and the syringe refilled with site water. After replacing the filter, the syringe/filter process was repeated until the bottles were filled, leaving adequate headspace to allow for expansion during freezing. Samples were immediately packed on ice for transport. Upon return to the laboratory, the water samples were frozen until shipped. Nitrate and nitrite analysis is based on the methodology of Armstrong et al. (1967) and utilize a ground Cd column; Armstrong, F. A. J., C. R. Stearns, et al. (1967). "The measurement of upwelling and subsequent biological processes by means of the Technicon Autoanalyzer and associated equipment." Deep-Sea Research 14(3): 381-389.; Data Quality Information: Five standards are run in duplicate at the beginning of each day. Line regression calculations are conducted to generate conversion equations. Correlation coefficients of 0.99 or better are achieved prior to analysis. Blanks are also analyzed after each calibration in order to bracket each batch of 10 samples. Duplicate samples are analyzed with each batch. The %RPD must be less than 30% for each of the analytes measured if the detected analytes are detected at greater than 3x MDL Data Type: AMMONIUM (NH4) (measured); Units: mg/l N; Observation Type: laboratory analysis; Sampling Instrument: Technicon II nutrient analyxer; Sampling and Analyzing Method: At each site, duplicate samples were collected for the analysis of dissolved nutrients. Samples were kept in the dark, and then filtered at the time of collection into acid-washed 125 ml high density polyethylene (HDPE) bottles, using 60 ml syringes equipped with disposable Millipore Sterivex 0.22 μm filter units. The syringe was first rinsed with several full volumes of site water. Next, the syringe was refilled, the Sterivex filter attached, and a full volume of site water was pushed through the filter. The sample bottles were rinsed three times with filtered site water. The filter was removed and the syringe refilled with site water. After replacing the filter, the syringe/filter process was repeated until the bottles were filled, leaving adequate headspace to allow for expansion during freezing. Samples were immediately packed on ice for transport. Upon return to the laboratory, the water samples were frozen until shipped. Ammonia analysis is based on the methodology of Harwood (Harwood and Kuhn, 1970) using dichloroisocyanurate as oxidizer. Harwood, J. E. and A. L. Kuhn (1970). "A colorimetric method for ammonia in natural waters." Water Research 4: 805 - 811; Data Quality Information: Five standards are run in duplicate at the beginning of each day. Line regression calculations are conducted to generate conversion equations. Correlation coefficients of 0.99 or better are achieved prior to analysis. Blanks are also analyzed after each calibration in order to bracket each batch of 10 samples. Duplicate samples are analyzed with each batch. The %RPD must be less than 30% for each of the analytes measured if the detected analytes are detected at greater than 3x MDL Data Type: UREA (measured); Units: mg/l N; Observation Type: laboratory analysis; Sampling Instrument: Technicon II nutrient analyzer; Sampling and Analyzing Method: At each site, duplicate samples were collected for the analysis of dissolved nutrients. Samples were kept in the dark, and then filtered at the time of collection into acid-washed 125 ml high density polyethylene (HDPE) bottles, using 60 ml syringes equipped with disposable Millipore Sterivex 0.22 μm filter units. The syringe was first rinsed with several full volumes of site water. Next, the syringe was refilled, the Sterivex filter attached, and a full volume of site water was pushed through the filter. The sample bottles were rinsed three times with filtered site water. The filter was removed and the syringe refilled with site water. After replacing the filter, the syringe/filter process was repeated until the bottles were filled, leaving adequate headspace to allow for expansion during freezing. Samples were immediately packed on ice for transport. Upon return to the laboratory, the water samples were frozen until shipped. Urea is measured using diacetyl-monoximine and themicarbozide. Hansen, H. P. and F. Koroleff (1999). Determination of Nutrients. Methods of Seawater Analysis. K. Grasshoff, K. Kremling and M. Ernhardt. New York, Wiley-VCH: 159-251.; Data Quality Information: Five standards are run in duplicate at the beginning of each day. Line regression calculations are conducted to generate conversion equations. Correlation coefficients of 0.99 or better are achieved prior to analysis. Blanks are also analyzed after each calibration in order to bracket each batch of 10 samples. Duplicate samples are analyzed with each batch. The %RPD must be less than 30% for each of the analytes measured if the detected analytes are detected at greater than 3x MDL Data Type: Dissolved Inorganic Nitrogen (calculated); Units: mg/L; Observation Type: laboratory analysis; Sampling Instrument: Technicon II nutrient analyzer; Sampling and Analyzing Method: DIN is the summation of nitrate, nitrite and ammonium; Data Quality Information: Five standards are run in duplicate at the beginning of each day. Line regression calculations are conducted to generate conversion equations. Correlation coefficients of 0.99 or better are achieved prior to analysis. Blanks are also analyzed after each calibration in order to bracket each batch of 10 samples. Duplicate samples are analyzed with each batch. The %RPD must be less than 30% for each of the analytes measured if the detected analytes are detected at greater than 3x MDL Data Type: Dissolved Organic Nitrogen (calculated); Units: mg/L; Observation Type: laboratory analysis; Sampling Instrument: Technicon II nutrient analyzer; Sampling and Analyzing Method: DON is calculated by subtracting DIN from total dissolved nitrogen; Data Quality Information: Five standards are run in duplicate at the beginning of each day. Line regression calculations are conducted to generate conversion equations. Correlation coefficients of 0.99 or better are achieved prior to analysis. Blanks are also analyzed after each calibration in order to bracket each batch of 10 samples. Duplicate samples are analyzed with each batch. The %RPD must be less than 30% for each of the analytes measured if the detected analytes are detected at greater than 3x MDL Data Type: Total nitrogen (measured); Units: mg/L; Observation Type: laboratory analysis; Sampling Instrument: Technicon II nutrient analyzer; Sampling and Analyzing Method: At each site, duplicate samples were collected for the analysis of dissolved nutrients. Samples were kept in the dark, and then filtered at the time of collection into acid-washed 125 ml high density polyethylene (HDPE) bottles, using 60 ml syringes equipped with disposable Millipore Sterivex 0.22 μm filter units. The syringe was first rinsed with several full volumes of site water. Next, the syringe was refilled, the Sterivex filter attached, and a full volume of site water was pushed through the filter. The sample bottles were rinsed three times with filtered site water. The filter was removed and the syringe refilled with site water. After replacing the filter, the syringe/filter process was repeated until the bottles were filled, leaving adequate headspace to allow for expansion during freezing. Samples were immediately packed on ice for transport. Upon return to the laboratory, the water samples were frozen until shipped. The total concentration of nitrogen is determined after an initial decomposition step. This method involves persulfate oxidation while heating the sample in an autoclave (115°C, 20 minutes)(Hansen and Koroleff 1999). Hansen, H. P. and F. Koroleff (1999). Determination of Nutrients. Methods of Seawater Analysis. K. Grasshoff, K. Kremling and M. Ernhardt. New York, Wiley-VCH: 159-251.; Data Quality Information: Five standards are run in duplicate at the beginning of each day. Line regression calculations are conducted to generate conversion equations. Correlation coefficients of 0.99 or better are achieved prior to analysis. Blanks are also analyzed after each calibration in order to bracket each batch of 10 samples. Duplicate samples are analyzed with each batch. The %RPD must be less than 30% for each of the analytes measured if the detected analytes are detected at greater than 3x MDL Data Type: Orthophosphate (measured); Units: mg/L; Observation Type: laboratory analysis; Sampling Instrument: Technicon II nutrient analyzer; Sampling and Analyzing Method: At each site, duplicate samples were collected for the analysis of dissolved nutrients. Samples were kept in the dark, and then filtered at the time of collection into acid-washed 125 ml high density polyethylene (HDPE) bottles, using 60 ml syringes equipped with disposable Millipore Sterivex 0.22 μm filter units. The syringe was first rinsed with several full volumes of site water. Next, the syringe was refilled, the Sterivex filter attached, and a full volume of site water was pushed through the filter. The sample bottles were rinsed three times with filtered site water. The filter was removed and the syringe refilled with site water. After replacing the filter, the syringe/filter process was repeated until the bottles were filled, leaving adequate headspace to allow for expansion during freezing. Samples were immediately packed on ice for transport. Upon return to the laboratory, the water samples were frozen until shipped. Orthophosphate is measured using chemistry based on the investigations of Bernhardt and Wilhelms (1967) with the modification of hydrazine as a reductant. Bernhardt, H. and A. Wilhelms (1967). The continuous determination of low level iron, soluble phosphate and total phosphate with the AutoAnalyzer. Technicon Symposium.; Data Quality Information: Five standards are run in duplicate at the beginning of each day. Line regression calculations are conducted to generate conversion equations. Correlation coefficients of 0.99 or better are achieved prior to analysis. Blanks are also analyzed after each calibration in order to bracket each batch of 10 samples. Duplicate samples are analyzed with each batch. The %RPD must be less than 30% for each of the analytes measured if the detected analytes are detected at greater than 3x MDL Data Type: TOTAL PHOSPHORUS (measured); Units: mg/L; Observation Type: laboratory analysis; Sampling Instrument: Techncon II nutrient analyzer; Sampling and Analyzing Method: At each site, duplicate samples were collected for the analysis of dissolved nutrients. Samples were kept in the dark, and then filtered at the time of collection into acid-washed 125 ml high density polyethylene (HDPE) bottles, using 60 ml syringes equipped with disposable Millipore Sterivex 0.22 μm filter units. The syringe was first rinsed with several full volumes of site water. Next, the syringe was refilled, the Sterivex filter attached, and a full volume of site water was pushed through the filter. The sample bottles were rinsed three times with filtered site water. The filter was removed and the syringe refilled with site water. After replacing the filter, the syringe/filter process was repeated until the bottles were filled, leaving adequate headspace to allow for expansion during freezing. Samples were immediately packed on ice for transport. Upon return to the laboratory, the water samples were frozen until shipped. Total phosphorus is measured using chemistry based on the investigations of Bernhardt and Wilhelms (1967) with the modification of hydrazine as a reductant. Bernhardt, H. and A. Wilhelms (1967). The continuous determination of low level iron, soluble phosphate and total phosphate with the AutoAnalyzer. Technicon Symposium.; Data Quality Information: Five standards are run in duplicate at the beginning of each day. Line regression calculations are conducted to generate conversion equations. Correlation coefficients of 0.99 or better are achieved prior to analysis. Blanks are also analyzed after each calibration in order to bracket each batch of 10 samples. Duplicate samples are analyzed with each batch. The %RPD must be less than 30% for each of the analytes measured if the detected analytes are detected at greater than 3x MDL Data Type: Sediment trap deposition (measured); Units: mg/cm2/day; Observation Type: laboratory analysis; Sampling Instrument: sediment trap tube; Sampling and Analyzing Method: Sediment traps were deployed for one month. Upon retrieval, sediment samples were decanted, filtered, rinsed to remove salts, then dried completely at 70° C. Samples were then cooled to room temperature in a desiccator, and weighed to the nearest 0.001 g to obtain total dry weight of accumulated sediments for each trap. Rate was determined using the number of days the traps had been deployed (typically 30 days).; Data Quality Information: Triplicate sediment traps deployed in the field, and deposition measured and averaged. Subset of samples reweighed after drying Data Type: Organic/Carbonate/Terrigenous Sediment Fractions (measured); Units: grams; Observation Type: laboratory analysis; Sampling Instrument: Muffle furnace (Fisher Scientific Isotemp 550 series); Sampling and Analyzing Method: The analysis of sediment composition (organic/carbonate/ terrigenous fractions) was carried out using loss on ignition(LOI) at 550° C and 950° C, following the techniques described by Heiri, et al. (2001). Briefly, homogenized sediment sub-samples were placed into clean, labeled, and pre-weighed porcelain crucibles. Crucibles and sediments were then dried at 105° C, cooled, and weighed to the nearest 0.001 g prior to combustion at 550° C in a muffle furnace. Samples were held at 550° C for four (4) hours, then cooled to room temperature. Samples were again dried in a desiccator, and re-weighed post-combustion, then returned to the muffle furnace and combusted at 950° C for two (2) hours. Aftercooling to room temperature, the weighing process was repeated a final time to obtain dry weight post-combustion. Organic and carbonate contents of samples were calculated by the following equations, respectively: %LOI 550° C = ((DW 105° C - DW 550° C)/DW 105°C)*100%. LOI 950° C = ((DW 550° C - DW 950° C)/DW 105° C)*100. Heiri, O., Lotter, A. F., Lemcke, G. (2001) Loss on ignition as a method for estimating organic and carbonate content in sediments: reproducibility and comparability of results. Journal of Paleolimnology 25:101-110.; Data Quality Information: Duplicate samples measured Data Type: Total supended solids (measured); Units: g/L; Observation Type: laboratory analysis; Sampling Instrument: Filter and suction flask apparatus; Sampling and Analyzing Method: At each site, a one (1) liter water sample was collected for analysis of total suspended solids (TSS) each month. A clean, pre-labeled bottle was uncapped and submerged approximately one half meter below the water surface. The bottle was filled and rinsed out twice with site water, then filled, capped, and placed on ice for transport back to UVI. The water samples for TSS were stored refrigerated for a period of no longer than one month from collection until analysis. Each one liter sample was filtered through a pre-weighed glass fiber filter mounted in a suction flask apparatus. (if less than one liter was used, the exact volume of water filtered was noted). The filtered sample was rinsed several times with deionized water in order to remove salts, then dried at 105° C, and weighed to the nearest 0.001 g. Calculation of TSS was as follows: TSS (mg/L) = ([A-B]*1000)/C Where A = End weight of the filter in grams (g) B = Initial weight of the filter in grams (g) C = Volume of water filtered in liters (l).; Data Quality Information: Duplicate samples taken at sitesz and analyzed asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian multi-parameter water quality sensor multi-parameter water quality sensor used to measure temperature, salinity, dissolved oxygen, and other parameters Instrument used to measure temperature, salinity, dissolved oxygen, and other parameters, often used to measure water quality parameters. Can be a hand-held instrument or a sonde for unattended monitoring. Often used in coastal water monitoring stations. YSI is the preeminent brand (as of 2024).