BCO-DMO ERDDAP
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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute NC_GLOBAL acquisition_description String Sediments were collected and profiled immediately with voltammetric Hg/Au\nmicroelectrodes deployed on a computer-controlled micromanipulator (Beckler et\nal., 2016). Sediment pore waters were then extracted from the same core and\neither preserved until analysis or analyzed immediately onboard ship. Sampling\nand analyses were conducted immediately after sediment collection to minimize\nartifacts from exposure to the atmosphere.\n \nSediment cores were obtained by a MC-800 multi-corer and profiled within 30\nminutes with voltammetric Hg/Au microelectrodes deployed on a computer-\ncontrolled micromanipulator. After profiling, sediments were immediately\nsliced under N\\u2082 atmosphere and pore waters extracted by centrifugation at\n3000 rpm under N\\u2082 atmosphere. Finally, pore waters were immediately\nfiltered (0.2 \\u00b5M PSE Puradisc syringe filters, Whatman) under N\\u2082\natmosphere and either preserved at -20C until analysis (SO\\u2084\\u00b2\\u207b),\ndispensed directly into reagents for analysis (SPO\\u2084\\u00b3\\u207b), or\nanalyzed immediately (DIC). SO\\u2084\\u00b2\\u207b was measured by non-\nsuppressed HPLC with UV detection (Beckler et al., 2014).\nSPO\\u2084\\u00b3\\u207b was measured spectrophotometrically using the molybdate-\nblue method after natural color correction to avoid interferences from\ndissolved silica and sulfides (Murphy and Riley, 1962). Finally, DIC was\nmeasured by flow injection analysis with conductivity detection after spiking\nsamples with 10 mM ZnCl\\u2082 to prevent dissolved sulfide interferences (Hall\nand Aller, 1992). All errors reported for the electrochemical measurements\nrepresent the standard deviation of at least triplicate measurements. Errors\nof all other parameters represent the analytical error propagated from\ncalibration curves, dilution, and instrumental drift.\n \nProblem report: Some of the data are missing because pore water volumes were\ntoo low to make all the measurements.
attribute NC_GLOBAL awards_0_award_nid String 743718
attribute NC_GLOBAL awards_0_award_number String OCE-1438648
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1438648 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Henrietta N Edmonds
attribute NC_GLOBAL awards_0_program_manager_nid String 51517
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String SAV-15-18 (CL2015) Sediment Porewater Depth Profiles \n  PI: Martial Taillefert  \n  Version date: 2020-Jan-21
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3  19 Dec 2019
attribute NC_GLOBAL date_created String 2020-01-07T20:49:25Z
attribute NC_GLOBAL date_modified String 2020-01-21T19:37:36Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.786268.1
attribute NC_GLOBAL Easternmost_Easting double -75.806
attribute NC_GLOBAL geospatial_lat_max double 34.266
attribute NC_GLOBAL geospatial_lat_min double 33.8715
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -75.806
attribute NC_GLOBAL geospatial_lon_min double -76.4343
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/786268 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String HPLC
attribute NC_GLOBAL instruments_0_dataset_instrument_description String SO42- was measured by non-suppressed HPLC with UV detection.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 786482
attribute NC_GLOBAL instruments_0_description String A High-performance liquid chromatograph (HPLC) is a type of liquid chromatography used to separate compounds that are dissolved in solution. HPLC instruments consist of a reservoir of the mobile phase, a pump, an injector, a separation column, and a detector. Compounds are separated by high pressure pumping of the sample mixture onto a column packed with microspheres coated with the stationary phase. The different components in the mixture pass through the column at different rates due to differences in their partitioning behavior between the mobile liquid phase and the stationary phase.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB11/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String High Performance Liquid Chromatograph
attribute NC_GLOBAL instruments_0_instrument_nid String 506
attribute NC_GLOBAL instruments_0_supplied_name String HPLC
attribute NC_GLOBAL instruments_1_acronym String Multi Corer
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Sediment cores were obtained by a MC-800 multi-corer.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 786481
attribute NC_GLOBAL instruments_1_description String The Multi Corer is a benthic coring device used to collect multiple, simultaneous, undisturbed sediment/water samples from the seafloor.  Multiple coring tubes with varying sampling capacity depending on tube dimensions are mounted in a frame designed to sample the deep ocean seafloor. For more information, see Barnett et al. (1984) in Oceanologica Acta, 7, pp. 399-408.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/51/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Multi Corer
attribute NC_GLOBAL instruments_1_instrument_nid String 532
attribute NC_GLOBAL instruments_1_supplied_name String MC-800 multi-corer
attribute NC_GLOBAL instruments_2_acronym String FIA
attribute NC_GLOBAL instruments_2_dataset_instrument_description String DIC was measured by flow injection analysis with peristaltic pump (Gilson), conductivity detector (Fisher Scientific), and integrator with LC-100 software (Analytical Systems, Inc.).
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 786484
attribute NC_GLOBAL instruments_2_description String An instrument that performs flow injection analysis. Flow injection analysis (FIA) is an approach to chemical analysis that is accomplished by injecting a plug of sample into a flowing carrier stream. FIA is an automated method in which a sample is injected into a continuous flow of a carrier solution that mixes with other continuously flowing solutions before reaching a detector. Precision is dramatically increased when FIA is used instead of manual injections and as a result very specific FIA systems have been developed for a wide array of analytical techniques.
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB36/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Flow Injection Analyzer
attribute NC_GLOBAL instruments_2_instrument_nid String 657
attribute NC_GLOBAL instruments_3_acronym String Spectrophotometer
attribute NC_GLOBAL instruments_3_dataset_instrument_description String PO43- was measured spectrophotometrically.
attribute NC_GLOBAL instruments_3_dataset_instrument_nid String 786483
attribute NC_GLOBAL instruments_3_description String An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.
attribute NC_GLOBAL instruments_3_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB20/ (external link)
attribute NC_GLOBAL instruments_3_instrument_name String Spectrophotometer
attribute NC_GLOBAL instruments_3_instrument_nid String 707
attribute NC_GLOBAL instruments_3_supplied_name String Spectrophotometer Thermofisher
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, chemical, chemistry, collection, Collection_Type, concentration, data, dataset, date, day, depth, dic, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Phosphate, erddap, latitude, longitude, management, mass, mass_concentration_of_phosphate_in_sea_water, month, ocean, oceanography, oceans, office, phosphate, po4, preliminary, sample, sample_ID, science, sdDIC, sdPO4, sdSO4, sea, seawater, sediment, Sediment_depth, so4, station, type, water, year
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/786268/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/786268 (external link)
attribute NC_GLOBAL Northernmost_Northing double 34.266
attribute NC_GLOBAL param_mapping String {'786268': {'Lat': 'flag - latitude', 'Sediment_depth': 'flag - depth', 'Lon': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/786268/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Georgia Institute of Technology
attribute NC_GLOBAL people_0_affiliation_acronym String Georgia Tech
attribute NC_GLOBAL people_0_person_name String Martial Taillefert
attribute NC_GLOBAL people_0_person_nid String 743721
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_1_person_name String Shannon Rauch
attribute NC_GLOBAL people_1_person_nid String 51498
attribute NC_GLOBAL people_1_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL project String Soluble Fe Fluxing
attribute NC_GLOBAL projects_0_acronym String Soluble Fe Fluxing
attribute NC_GLOBAL projects_0_description String NSF Award Abstract:\nIron is a limiting nutrient in the world's oceans and plays a key role in regulating the growth of phytoplankton. The main sources of iron to the open ocean are the atmosphere, through wind-blown terrestrial dust, and the seafloor, through input from continental shelf sediments. While atmospheric inputs have been well-studied, the oceanic input of iron from sediments has only sparsely been measured and, as a result, the relative importance of the sediment-derived iron to the iron pool and, ultimately, primary productivity in the oceans is poorly understood. In this study, researchers will examine the chemical properties of sediment-derived iron in the oceans to assess its contribution to the iron used by phytoplankton. Results from this study will further our understanding of iron inputs to the ocean and their importance to ocean primary productivity. The project will contribute to the training of graduate students, as well as provide educational opportunities such as a day at sea for undergraduate students in engineering and physical science.\nThe atmosphere and continental margin sediments are the main source of the limiting nutrient iron (Fe) to the open ocean. Yet, the chemical form of iron from sediments has not been well examined and only quantified as reduced iron or the dissolved iron passing through 0.45 µm filters. The kinetics of iron oxygenation suggests it should precipitate rapidly in the overlying waters, challenging the view that sediments are important sources of iron for primary production. To establish whether the flux of iron from sediments has important implications for primary productivity, possibly rivaling atmospheric inputs, it is necessary to demonstrate that ferric iron originating in sediments is under the form of stable iron species with potential for a high residence time in the water column. The overall objective of this project is to test the hypotheses that iron fluxing across the sediment-water interface in continental margin sediments is dissolved under the form of organic-Fe(III) complexes and that the magnitude of the iron flux is influenced by the redox conditions in the overlying waters, the composition of the complexes, and the biogeochemical processes in the underlying sediments. To test these hypotheses, the flux and speciation of dissolved Fe(III) will be quantified in the sediments of the Carolina depocenter and the Gulf of Mexico, and the biogeochemical processes regulating the production and the flux of iron as a function of the redox regime of the environment will be determined using in situ measurements and state-of-the-art voltammetric and chromatographic techniques.
attribute NC_GLOBAL projects_0_end_date String 2017-08
attribute NC_GLOBAL projects_0_geolocation String Northern South Atlantic Bight (Cape Lookout, NC) and Northern Gulf of Mexico
attribute NC_GLOBAL projects_0_name String Source, Composition, and Stability of Soluble Iron Fluxing from Continental Margin Sediments
attribute NC_GLOBAL projects_0_project_nid String 743719
attribute NC_GLOBAL projects_0_start_date String 2014-09
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 33.8715
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String Year,Collection_Type
attribute NC_GLOBAL summary String Sediment pore water and solid phase geochemical analyses from samples collected on R/V Savannah cruise SAV-15-18 at the Cape Lookout Continental Shelf and Slope during July 2015.
attribute NC_GLOBAL title String [Pore Water Depth Profiles CL2015] - Sediment pore water and solid phase geochemical analyses from samples collected on R/V Savannah cruise SAV-15-18 at the Cape Lookout Continental Shelf and Slope during July 2015 (Source, Composition, and Stability of Soluble Iron Fluxing from Continental Margin Sediments)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -76.4343
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Year short
attribute Year _FillValue short 32767
attribute Year actual_range short 2015, 2015
attribute Year bcodmo_name String year
attribute Year description String Year
attribute Year long_name String Year
attribute Year nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/ (external link)
attribute Year units String unitless
variable Month byte
attribute Month _FillValue byte 127
attribute Month actual_range byte 7, 7
attribute Month bcodmo_name String month
attribute Month description String Month
attribute Month long_name String Month
attribute Month nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/ (external link)
attribute Month units String unitless
variable Day byte
attribute Day _FillValue byte 127
attribute Day actual_range byte 8, 20
attribute Day bcodmo_name String day
attribute Day description String Day
attribute Day long_name String Day
attribute Day nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/ (external link)
attribute Day units String unitless
variable Collection_Type String
attribute Collection_Type bcodmo_name String instrument
attribute Collection_Type description String Instrument used for collection
attribute Collection_Type long_name String Collection Type
attribute Collection_Type units String unitless
variable Station String
attribute Station bcodmo_name String station
attribute Station description String Station number
attribute Station long_name String Station
attribute Station units String unitless
variable longitude double
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -76.4343, -75.806
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Longitude
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 33.8715, 34.266
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable sample_ID byte
attribute sample_ID _FillValue byte 127
attribute sample_ID actual_range byte 0, 25
attribute sample_ID bcodmo_name String sample
attribute sample_ID description String Sample ID number
attribute sample_ID long_name String Sample ID
attribute sample_ID nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute sample_ID units String unitless
variable Sediment_depth double
attribute Sediment_depth _FillValue double NaN
attribute Sediment_depth actual_range double -0.5, 26.6
attribute Sediment_depth bcodmo_name String depth_bsf
attribute Sediment_depth description String Sediment depth
attribute Sediment_depth long_name String Sediment Depth
attribute Sediment_depth units String centimeters (cm)
variable SO4 float
attribute SO4 _FillValue float NaN
attribute SO4 actual_range float 18.19, 38.31
attribute SO4 bcodmo_name String SO4
attribute SO4 description String Sulfate
attribute SO4 long_name String SO4
attribute SO4 nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/SPHTMAXX/ (external link)
attribute SO4 units String millimolar (mM)
variable sdSO4 float
attribute sdSO4 _FillValue float NaN
attribute sdSO4 actual_range float 0.07, 1.04
attribute sdSO4 bcodmo_name String SO4
attribute sdSO4 description String Standard deviation of SO4
attribute sdSO4 long_name String Sd SO4
attribute sdSO4 nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/SPHTMAXX/ (external link)
attribute sdSO4 units String millimolar (mM)
variable PO4 float
attribute PO4 _FillValue float NaN
attribute PO4 actual_range float 0.12, 46.06
attribute PO4 bcodmo_name String PO4
attribute PO4 description String Dissolved orthophosphate
attribute PO4 long_name String Mass Concentration Of Phosphate In Sea Water
attribute PO4 units String micromolar (uM)
variable sdPO4 float
attribute sdPO4 _FillValue float NaN
attribute sdPO4 actual_range float 0.05, 1.84
attribute sdPO4 bcodmo_name String PO4
attribute sdPO4 description String Standard deviation of PO4
attribute sdPO4 long_name String Sd PO4
attribute sdPO4 units String micromolar (uM)
variable DIC float
attribute DIC _FillValue float NaN
attribute DIC actual_range float 1.04, 4.52
attribute DIC bcodmo_name String DIC
attribute DIC description String Dissolved inorganic carbon
attribute DIC long_name String DIC
attribute DIC units String millimolar (mM)
variable sdDIC float
attribute sdDIC _FillValue float NaN
attribute sdDIC actual_range float 0.0, 0.56
attribute sdDIC bcodmo_name String DIC
attribute sdDIC description String Standard deviation of DIC
attribute sdDIC long_name String Sd DIC
attribute sdDIC units String millimolar (mM)
variable date String
attribute date bcodmo_name String date
attribute date description String Date; format: yyyy-mm-dd
attribute date long_name String Date
attribute date nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute date units String unitless

 
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