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
attribute NC_GLOBAL acquisition_description String X-ray diffraction (XRD)\n \nPowdered samples were examined for mineral presence using a Rigaku Ultima III\nX-ray Diffraction (XRD) System at the Institute of Imaging and Analytical\nTechnologies (i2AT) at Mississippi State University. These analyses were\nconducted at 40 kV and 40 mA.\n \nElemental analysis of experimental aragonite crystals and experimental fluids\nwith ICP-MS\n \nCrystals were dissolved and solutions were analyzed by ICP-MS. Experimental\nfluids were also analyzed with ICP-MS, as well. Analyses were conducted on an\nAgilent 7900 quadrupole ICP-MS equipped with a glass nebulizer at the\nUniversity of Rochester (Rochester, NY). Prior to analysis, fluid samples were\ndiluted with 2% trace metal grade HNO3 (Fisher) in the volume proportion of\n1:100. Aragonite crystals were dissolved in HNO3 in the mass proportion of\n1:1000. Experimental fluid samples were analyzed using a 5-point calibration\ncurve (one blank and four standards). Seawater standards were prepared by\ndiluting a seawater certificate reference material (CRM-SW; High-Purity\nStandards) to a final concentration of ~300, 200, 150, and 80 ppm.\nExperimental crystals were analyzed using a 5-point calibration curve (one\nblank and four standards). Calcium carbonate standards were prepared by\ndissolving and diluting the original MACS-3 powder to a final concentration of\n~111, 55, 27, and 11 ppm. Because S concentration was not reported in the\ncertificate of analysis provided by the USGS, we added a small amount of\nsulfur single element standard (Inorganic Ventures) to a final concentration\nof ~1.5, 0.75, 0.375, and 0.150 ppm, in each MACS-3 standard we prepared.\nSamples, blanks, and standards were also spiked with 2 ppb indium, which was\nused as the internal standard to check for possible instrumental drift during\neach analytical session.\n \nThe instrument was tuned at the beginning of each analytical session (two\nanalytical sessions in two consecutive days). 24Mg, 34S, 43Ca, 88Sr, 138Ba,\nand 238U were analyzed.\\u00a0 Integration times were the following: 0.3 s for\n24Mg; 0.12 s for 43Ca, 88Sr, and 138Ba; 0.99 s for 238U. The calibration curve\nwas run before analyzing each set of samples. For each element analyzed, the\ncorrelation among standards was 0.9923 or better. Elements were identified\nusing three peaks. Each analysis included three replicates, with 100\nsweeps/replicate. The carrier gas (argon) flow was set at 1.15 L/min. In\naddition, we used helium flow of 4.2 milliliters per minute in the collision\nreaction cell in the ICP-MS to minimize oxide interference. At the end of each\ntuning, oxides and doubly-charged ion interferences were below 0.8% and 1.4%,\nrespectively. Data were computed automatically during the run using the\nAgilent Mass Hunter 4.1 workstation software v. C.01.01.\n \nResults\n \nXRD spectra identified the presence of aragonite and monohydrocalcite (Table\n2). Only aragonite crystallized at intermediate pressure (110 bars).\nCalculations of fluid carbonate chemistry were conducted with a CO2SYS\nspreadsheet (Lewis and Wallace, 1998) \\u00a0and presented in Table 1. There,\nmeasured pH and total alkalinity (TA) were used to calculate the concentration\nof CO32-, which together with Ca2+ is necessary to calculate fluid saturation\nstates with respect to aragonite (Omega-Ar). Precipitation started at\nsaturation state, which exceeds that of artificial seawater (ASW) by the\nfactor of ~25. Over the course of the experiments, Omega-Ar decreased back to\n2, i.e. Omega-Ar value of ASW prior to the addition of Na2CO3. Table 2\ncontains E/Ca of experimental products (solids and liquids) as well as the\nDoener-Hoskins apparent partition coefficients between solid and fluid (KE).\nFluid composition changed during individual experiments, and therefore, values\nof KE were calculated using the Doener-Hoskins relationship:\n \n\\u00a0\\u00a0\\u00a0\\u00a0\\u00a0\\u00a0\\u00a0KE= log(1+ mE^aragonite /mE^fluid) /\nlog(1+ mCa^aragonite /mCa^fluid)\\u00a0 \\u00a0 (1)\n \nwhere m^aragonite is the total number of moles of element (i.e., Mg, S, Sr,\nBa, or U) or Ca in the final precipitate, and m^fluid is the total number of\nmoles of element or Ca in the final fluid (Doerner and Hoskins, 1925).\n \nSoftware products used:  \n XRD: Jade and Microsoft Excel  \n ICP-MS: Agilent Mass Hunter 4.1 workstation software v. C.01.01 and\nMicrosoft Excel
attribute NC_GLOBAL awards_0_award_nid String 554980
attribute NC_GLOBAL awards_0_award_number String OCE-0939564
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0939564 (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 David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Trace elements in CaCO3 and fluid \n   Table 2. Elemental ratios and partition coefficients for CaCO3 in deepsea conditions (Mg, S, Sr, and Ba between crystallized solids and fluid) \n   PI: R. Gabitov (Miss. State) \n   version date: 2020-03-25 \n  \n   (*) - KE Doener-Hoskins values cannot be used for aragonite-fluid partitioning because other carbonate minerals precipitated in those runs.  \n   Runs: ASW = Artificial SeaWater (Instant Ocean); other fluid samples are from the end of experiments;  \n         LP = low pressure run; RPI = runs performed at Rensselaer Polytechnic Institute \n   Minerals: Ar = aragonite; MHC = monohydrocalcite; CaCO3-II = monoclinic calcium carbonate.
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 2020-03-25T19:25:25Z
attribute NC_GLOBAL date_modified String 2020-04-09T12:58:47Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.26008/1912/bco-dmo.806957.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/806957 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String unknown
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Custom designed pressure chamber used to simulate the high-pressure conditions at the seafloor for this set of experiments (designed at Rensselaer Polytech Institute, Department of Earth and Environmental Sciences).
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 806964
attribute NC_GLOBAL instruments_0_description String No relevant match in BCO-DMO instrument vocabulary.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/999/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String unknown
attribute NC_GLOBAL instruments_0_instrument_nid String 575
attribute NC_GLOBAL instruments_0_supplied_name String high-pressure apparatus
attribute NC_GLOBAL instruments_1_acronym String XRD
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Located at  at Mississippi State University
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 806976
attribute NC_GLOBAL instruments_1_description String Instruments that identify crystalline solids by measuring the characteristic spaces between layers of atoms or molecules in a crystal.
attribute NC_GLOBAL instruments_1_instrument_name String X-ray diffractometer
attribute NC_GLOBAL instruments_1_instrument_nid String 625931
attribute NC_GLOBAL instruments_1_supplied_name String Rigaku Ultima III X-ray Diffraction (XRD) System at the Institute of Imaging and Analytical Technologies (i2AT)
attribute NC_GLOBAL instruments_2_acronym String ICP-OES
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 806975
attribute NC_GLOBAL instruments_2_description String Also referred to as an Inductively coupled plasma atomic emission spectroscope (ICP-AES). These instruments pass nebulised samples into an inductively-coupled gas plasma (8-10000 K) where they are atomised and excited. The de-excitation optical emissions at characteristic wavelengths are spectroscopically analysed. It is often used in the detection of trace metals.
attribute NC_GLOBAL instruments_2_instrument_name String Inductively Coupled Plasma Optical Emission Spectrometer
attribute NC_GLOBAL instruments_2_instrument_nid String 639924
attribute NC_GLOBAL instruments_2_supplied_name String Agilent 7900 quadrupole ICP-MS equipped with a glass nebulizer at the University of Rochester (Rochester, NY)
attribute NC_GLOBAL keywords String 2sd, analysis, Ba_Ca, Ba_Ca_2sd, bco, bco-dmo, biological, chemical, data, dataset, dmo, erddap, kba, Kba_2sd, kmg, KMg_2sd, KS_2sd, ksr, KSr_2sd, management, Mg_Ca, Mg_Ca_2sd, minerals, oceanography, office, preliminary, press, run, S_Ca, S_Ca_2sd, Sr_Ca, Sr_Ca_2sd
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/806957/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/806957 (external link)
attribute NC_GLOBAL param_mapping String {'806957': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/806957/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Mississippi State University
attribute NC_GLOBAL people_0_affiliation_acronym String MSU
attribute NC_GLOBAL people_0_person_name String Rinat Gabitov
attribute NC_GLOBAL people_0_person_nid String 743432
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 University of Rochester
attribute NC_GLOBAL people_1_person_name String Chiara Borrelli
attribute NC_GLOBAL people_1_person_nid String 743434
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String Rensselaer Polytechnic Institute
attribute NC_GLOBAL people_2_affiliation_acronym String RPI
attribute NC_GLOBAL people_2_person_name String Karyn Rogers
attribute NC_GLOBAL people_2_person_nid String 661573
attribute NC_GLOBAL people_2_role String Co-Principal Investigator
attribute NC_GLOBAL people_2_role_type String originator
attribute NC_GLOBAL people_3_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_3_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_3_person_name String Nancy Copley
attribute NC_GLOBAL people_3_person_nid String 50396
attribute NC_GLOBAL people_3_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL project String Deep Sea Geochem CaCO3
attribute NC_GLOBAL projects_0_acronym String Deep Sea Geochem CaCO3
attribute NC_GLOBAL projects_0_description String Biologically-mediated CaCO3 precipitation widely occurs in aquatic systems and is often directly linked to the metabolic activity of microorganisms, which could significantly affect the local environment. An example is oxidation of methane and reduction of sulfate mediated by a consortium of Bacteria and Archaea. In order to investigate geochemistry of CaCO3precipitated abiotically and under microbial activity experimental work was initiated.  The abiotic experiments were performed at different temperatures and pressures (nitrogen and nitrogen-methane mixture).  Further geochemical analyses will allow evaluating of the effect of total pressure and methane partial pressure on the geochemistry of CaCO3. Sulfate reducing bacterial (Desulfovibrio salexigens) was successfully cultured and precipitation experiments on microbially mediated CaCO3 are in progress. This work is relevant to C-DEBI Research Theme I (Activity in the Deep Subseafloor Biosphere: function & rates of global biogeochemical processes) because carbonate growth rate is linked to microbial activity and the rate of methane oxidation.
attribute NC_GLOBAL projects_0_end_date String 2014-09
attribute NC_GLOBAL projects_0_name String Biologically induced methane oxidation and precipitation of carbonate minerals: An experimental study
attribute NC_GLOBAL projects_0_project_nid String 743426
attribute NC_GLOBAL projects_0_project_website String https://www.darkenergybiosphere.org/award/biologically-induced-methane-oxidation-and-precipitation-of-carbonate-minerals-an-experimental-study/ (external link)
attribute NC_GLOBAL projects_0_start_date String 2014-05
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 standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Trace elements in CaCO3 and fluid. Table 2. Elemental ratios and partition coefficients for CaCO3 in deepsea conditions: Mg, S, Sr, and Ba between crystallized solids and fluid.
attribute NC_GLOBAL title String [Trace elements in CaCO3 and fluid] - Table 2. Elemental ratios and partition coefficients for CaCO3 in deepsea conditions: Mg, S, Sr, and Ba between crystallized solids and fluid. (Biologically induced methane oxidation and precipitation of carbonate minerals: An experimental study)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable analysis String
attribute analysis bcodmo_name String unknown
attribute analysis description String The type of analysis: solids; fluids; or KE (Doener-Hoskins partition coefficients between solid and fluid)
attribute analysis long_name String Analysis
attribute analysis units String unitless
variable run String
attribute run bcodmo_name String exp_id
attribute run description String experimental run identifier
attribute run long_name String Run
attribute run units String unitless
variable press short
attribute press _FillValue short 32767
attribute press actual_range short 1, 345
attribute press bcodmo_name String pressure
attribute press description String pressure
attribute press long_name String Press
attribute press nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/ (external link)
attribute press units String bars
variable minerals String
attribute minerals bcodmo_name String unknown
attribute minerals description String minerals identified with X-ray diffraction technique: aragonite; monoclinic carbonate (CaCO3-II)
attribute minerals long_name String Minerals
attribute minerals units String unitless
variable Mg_Ca float
attribute Mg_Ca _FillValue float NaN
attribute Mg_Ca actual_range float 8.284, 22360.0
attribute Mg_Ca bcodmo_name String unknown
attribute Mg_Ca description String magnesium to calcium ratio in carbonate crystals (solids) or in fluid at end of experiment
attribute Mg_Ca long_name String Mg Ca
attribute Mg_Ca units String millimole per mole of calcium
variable Mg_Ca_2sd float
attribute Mg_Ca_2sd _FillValue float NaN
attribute Mg_Ca_2sd actual_range float 0.414, 1118.0
attribute Mg_Ca_2sd bcodmo_name String unknown
attribute Mg_Ca_2sd description String two standard deviations from the mean of magnesium to calcium ratio
attribute Mg_Ca_2sd long_name String Mg Ca 2sd
attribute Mg_Ca_2sd units String millimole per mole of calcium
variable S_Ca float
attribute S_Ca _FillValue float NaN
attribute S_Ca actual_range float 7.042, 11956.0
attribute S_Ca bcodmo_name String unknown
attribute S_Ca description String sulfur to calcium ratio in carbonate crystals (solids) or in fluid at end of experiment
attribute S_Ca long_name String S Ca
attribute S_Ca units String millimole per mole of calcium
variable S_Ca_2sd float
attribute S_Ca_2sd _FillValue float NaN
attribute S_Ca_2sd actual_range float 0.352, 598.0
attribute S_Ca_2sd bcodmo_name String unknown
attribute S_Ca_2sd description String two standard deviations from the mean of sulfur to calcium ratio
attribute S_Ca_2sd long_name String S Ca 2sd
attribute S_Ca_2sd units String micromole per mole of calcium
variable Sr_Ca float
attribute Sr_Ca _FillValue float NaN
attribute Sr_Ca actual_range float 8.17, 16.676
attribute Sr_Ca bcodmo_name String unknown
attribute Sr_Ca description String strontium to calcium ratio in carbonate crystals (solids) or in fluid at end of experiment
attribute Sr_Ca long_name String Sr Ca
attribute Sr_Ca units String millimole per mole of calcium
variable Sr_Ca_2sd float
attribute Sr_Ca_2sd _FillValue float NaN
attribute Sr_Ca_2sd actual_range float 0.408, 0.834
attribute Sr_Ca_2sd bcodmo_name String unknown
attribute Sr_Ca_2sd description String two standard deviations from the mean of strontium to calcium ratio
attribute Sr_Ca_2sd long_name String Sr Ca 2sd
attribute Sr_Ca_2sd units String millimole per mole of calcium
variable Ba_Ca float
attribute Ba_Ca _FillValue float NaN
attribute Ba_Ca actual_range float 3.73, 27.7
attribute Ba_Ca bcodmo_name String unknown
attribute Ba_Ca description String barium to calcium ratio in carbonate crystals (solids) or in fluid at end of experiment
attribute Ba_Ca long_name String Ba Ca
attribute Ba_Ca units String millimole per mole of calcium
variable Ba_Ca_2sd float
attribute Ba_Ca_2sd _FillValue float NaN
attribute Ba_Ca_2sd actual_range float 0.187, 1.4
attribute Ba_Ca_2sd bcodmo_name String unknown
attribute Ba_Ca_2sd description String two standard deviations from the mean of barium to calcium ratio
attribute Ba_Ca_2sd long_name String Ba Ca 2sd
attribute Ba_Ca_2sd units String micromole per mole of calcium
variable KMg float
attribute KMg _FillValue float NaN
attribute KMg actual_range float 0.848, 3.37
attribute KMg bcodmo_name String unknown
attribute KMg description String Doener-Hoskins partition coefficients  of magnesium multiplied by 1000
attribute KMg long_name String KMG
attribute KMg units String unitless
variable KMg_2sd float
attribute KMg_2sd _FillValue float NaN
attribute KMg_2sd actual_range float 0.0167, 0.129
attribute KMg_2sd bcodmo_name String unknown
attribute KMg_2sd description String two standard deviations from the mean of Doener-Hoskins partition coefficients  of magnesium multiplied by 1000
attribute KMg_2sd long_name String KMG 2SD
attribute KMg_2sd units String unitless
variable KS float
attribute KS _FillValue float NaN
attribute KS actual_range float 1.31, 3.85
attribute KS bcodmo_name String unknown
attribute KS description String Doener-Hoskins partition coefficients  of sulfur multiplied by 1000
attribute KS long_name String KS
attribute KS units String unitless
variable KS_2sd float
attribute KS_2sd _FillValue float NaN
attribute KS_2sd actual_range float 0.169, 0.406
attribute KS_2sd bcodmo_name String unknown
attribute KS_2sd description String two standard deviations from the mean of Doener-Hoskins partition coefficients  of sulfur multiplied by 1000
attribute KS_2sd long_name String KS 2SD
attribute KS_2sd units String unitless
variable KSr float
attribute KSr _FillValue float NaN
attribute KSr actual_range float 0.769, 1.197
attribute KSr bcodmo_name String unknown
attribute KSr description String Doener-Hoskins partition coefficients  of strontium
attribute KSr long_name String KSR
attribute KSr units String unitless
variable KSr_2sd float
attribute KSr_2sd _FillValue float NaN
attribute KSr_2sd actual_range float 0.048, 0.1
attribute KSr_2sd bcodmo_name String unknown
attribute KSr_2sd description String two standard deviations from the mean of Doener-Hoskins partition coefficients  of strontium
attribute KSr_2sd long_name String KSR 2SD
attribute KSr_2sd units String unitless
variable KBa float
attribute KBa _FillValue float NaN
attribute KBa actual_range float 1.12, 2.23
attribute KBa bcodmo_name String unknown
attribute KBa description String Doener-Hoskins partition coefficients  of barium
attribute KBa long_name String KBa
attribute KBa units String unitless
variable Kba_2sd float
attribute Kba_2sd _FillValue float NaN
attribute Kba_2sd actual_range float 0.127, 0.591
attribute Kba_2sd bcodmo_name String unknown
attribute Kba_2sd description String two standard deviations from the mean of Doener-Hoskins partition coefficients  of barium
attribute Kba_2sd long_name String Kba 2sd
attribute Kba_2sd units String unitless

 
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