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Grid DAP Data | Sub- set | Table DAP Data | Make A Graph | W M S | Source Data Files | Acces- sible | Title | Sum- mary | FGDC, ISO, Metadata | Back- ground Info | RSS | E | Institution | Dataset ID |
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data | graph | files | public | [Hg Isotopes Reference Materials] - Reference materials analyzed in the laboratory for THg isotopic composition (Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry) | I M | background | BCO-DMO | bcodmo_dataset_788780 |
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 | The certified materials were bought from NIST. Reference materials were analyzed in the laboratory for THg isotopic composition. All the samples were combusted with the marine particles and zooplankton to act as procedural reference. For THg isotope determination the reference were combusted in a two-stage combustion furnace and Hg(0) g was trapped in a 1% KMnO4 solution. The 1% KMnO4 solution was analyzed for Hg stable isotope composition using a multiple collector inductively coupled plasma mass spectrometer. All the methods are detailed in Motta et al., (2019). |
attribute | NC_GLOBAL | awards_0_award_nid | String | 560590 |
attribute | NC_GLOBAL | awards_0_award_number | String | OCE-1433846 |
attribute | NC_GLOBAL | awards_0_data_url | String | http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1433846 |
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 | Donald L. Rice |
attribute | NC_GLOBAL | awards_0_program_manager_nid | String | 51467 |
attribute | NC_GLOBAL | cdm_data_type | String | Other |
attribute | NC_GLOBAL | comment | String | Reference materials analyzed in the laboratory for THg isotopic composition PI: Joel D. Blum (University of Michigan) Co-PIs: Brian N. Popp, Kanesa Seraphin, Jeffrey C. Drazen (University of Hawaii), & Claudia Benitez-Nelson (University of South Carolina) Version date: 21-Feb-2020 |
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/ |
attribute | NC_GLOBAL | data_source | String | extract_data_as_tsv version 2.3 19 Dec 2019 |
attribute | NC_GLOBAL | date_created | String | 2020-01-28T21:29:22Z |
attribute | NC_GLOBAL | date_modified | String | 2020-02-24T15:47:31Z |
attribute | NC_GLOBAL | defaultDataQuery | String | &time<now |
attribute | NC_GLOBAL | doi | String | 10.1575/1912/bco-dmo.788780.1 |
attribute | NC_GLOBAL | infoUrl | String | https://www.bco-dmo.org/dataset/788780 |
attribute | NC_GLOBAL | institution | String | BCO-DMO |
attribute | NC_GLOBAL | instruments_0_acronym | String | ICP Mass Spec |
attribute | NC_GLOBAL | instruments_0_dataset_instrument_description | String | multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS; Nu instruments) |
attribute | NC_GLOBAL | instruments_0_dataset_instrument_nid | String | 788792 |
attribute | NC_GLOBAL | instruments_0_description | String | An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer. |
attribute | NC_GLOBAL | instruments_0_instrument_external_identifier | String | https://vocab.nerc.ac.uk/collection/L05/current/LAB15/ |
attribute | NC_GLOBAL | instruments_0_instrument_name | String | Inductively Coupled Plasma Mass Spectrometer |
attribute | NC_GLOBAL | instruments_0_instrument_nid | String | 530 |
attribute | NC_GLOBAL | instruments_0_supplied_name | String | MC-ICP-MS |
attribute | NC_GLOBAL | keywords | String | average, Average_plus_minus_2SD, bco, bco-dmo, biological, chemical, d199, D199Hg, D199Hg_2SD, d200, D200Hg, D200Hg_2SD, d201, D201Hg, D201Hg_2SD, d202, d202Hg, d202Hg_2SD, d204, D204Hg, D204Hg_2SD, data, dataset, dmo, erddap, management, material, minus, oceanography, office, plus, preliminary, range, Range_of_Sessions, reference, Reference_Material, sessions |
attribute | NC_GLOBAL | license | String | https://www.bco-dmo.org/dataset/788780/license |
attribute | NC_GLOBAL | metadata_source | String | https://www.bco-dmo.org/api/dataset/788780 |
attribute | NC_GLOBAL | param_mapping | String | {'788780': {}} |
attribute | NC_GLOBAL | parameter_source | String | https://www.bco-dmo.org/mapserver/dataset/788780/parameters |
attribute | NC_GLOBAL | people_0_affiliation | String | University of Michigan |
attribute | NC_GLOBAL | people_0_person_name | String | Joel D. Blum |
attribute | NC_GLOBAL | people_0_person_nid | String | 560587 |
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 South Carolina |
attribute | NC_GLOBAL | people_1_person_name | String | Claudia R. Benitez-Nelson |
attribute | NC_GLOBAL | people_1_person_nid | String | 51092 |
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 | University of Hawaii at Manoa |
attribute | NC_GLOBAL | people_2_affiliation_acronym | String | SOEST |
attribute | NC_GLOBAL | people_2_person_name | String | Jeffrey C. Drazen |
attribute | NC_GLOBAL | people_2_person_nid | String | 491313 |
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 | University of Hawaii at Manoa |
attribute | NC_GLOBAL | people_3_affiliation_acronym | String | SOEST |
attribute | NC_GLOBAL | people_3_person_name | String | Brian N. Popp |
attribute | NC_GLOBAL | people_3_person_nid | String | 51093 |
attribute | NC_GLOBAL | people_3_role | String | Co-Principal Investigator |
attribute | NC_GLOBAL | people_3_role_type | String | originator |
attribute | NC_GLOBAL | people_4_affiliation | String | University of Hawaii |
attribute | NC_GLOBAL | people_4_person_name | String | Kanesa Seraphin |
attribute | NC_GLOBAL | people_4_person_nid | String | 537131 |
attribute | NC_GLOBAL | people_4_role | String | Co-Principal Investigator |
attribute | NC_GLOBAL | people_4_role_type | String | originator |
attribute | NC_GLOBAL | people_5_affiliation | String | Woods Hole Oceanographic Institution |
attribute | NC_GLOBAL | people_5_affiliation_acronym | String | WHOI BCO-DMO |
attribute | NC_GLOBAL | people_5_person_name | String | Shannon Rauch |
attribute | NC_GLOBAL | people_5_person_nid | String | 51498 |
attribute | NC_GLOBAL | people_5_role | String | BCO-DMO Data Manager |
attribute | NC_GLOBAL | people_5_role_type | String | related |
attribute | NC_GLOBAL | project | String | Hg_Biogeochemistry |
attribute | NC_GLOBAL | projects_0_acronym | String | Hg_Biogeochemistry |
attribute | NC_GLOBAL | projects_0_description | String | NSF award abstract: Mercury is a pervasive trace element that exists in several states in the marine environment, including monomethylmercury (MMHg), a neurotoxin that bioaccumulates in marine organisms and poses a human health threat. Understanding the fate of mercury in the ocean and resulting impacts on ocean food webs requires understanding the mechanisms controlling the depths at which mercury chemical transformations occur. Preliminary mercury analyses on nine species of marine fish from the North Pacific Ocean indicated that intermediate waters are an important entry point for MMHg into open ocean food webs. To elucidate the process controlling this, researchers will examine mercury dynamics in regions with differing vertical dissolved oxygen profiles, which should influence depths of mercury transformation. Results of the study will aid in a better understanding of the pathways by which mercury enters the marine food chain and can ultimately impact humans. This project will provide training for graduate and undergraduate students, and spread awareness on oceanic mercury through public outreach and informal science programs. Mercury isotopic variations can provide insight into a wide variety of environmental processes. Isotopic compositions of mercury display mass-dependent fractionation (MDF) during most biotic and abiotic chemical reactions and mass-independent fractionation (MIF) during photochemical radical pair reactions. The unusual combination of MDF and MIF can provide information on reaction pathways and the biogeochemical history of mercury. Results from preliminary research provide strong evidence that net MMHg formation occurred below the surface mixed layer in the pycnocline and suggested that MMHg in low oxygen intermediate waters is an important entry point for mercury into open ocean food webs. These findings highlight the critical need to understand how MMHg levels in marine biota will respond to changes in atmospheric mercury emissions, deposition of inorganic mercury to the surface ocean, and hypothesized future expansion of oxygen minimum zones. Using field collections across ecosystems with contrasting biogeochemistry and mercury isotope fractionation experiments researchers will fill key knowledge gaps in mercury biogeochemistry. Results of the proposed research will enable scientists to assess the biogeochemical controls on where in the water column mercury methylation and demethylation likely occur. Related background publication with supplemental data section: Joel D. Blum, Brian N. Popp, Jeffrey C. Drazen, C. Anela Choy & Marcus W. Johnson. 2013. Methylmercury production below the mixed layer in the North Pacific Ocean. Nature Geoscience 6, 879–884. doi:10.1038/ngeo1918 |
attribute | NC_GLOBAL | projects_0_end_date | String | 2017-07 |
attribute | NC_GLOBAL | projects_0_geolocation | String | Pacific Subtropical Gyre, Station ALOHA 22.75N 158W; equatorial Pacific (10N 155W, 5N 155W) |
attribute | NC_GLOBAL | projects_0_name | String | Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry |
attribute | NC_GLOBAL | projects_0_project_nid | String | 560580 |
attribute | NC_GLOBAL | projects_0_start_date | String | 2014-08 |
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 | This dataset contains the reference materials analyzed in the laboratory for THg isotopic composition. These data were published in Motta et al., (2019) with supporting information. |
attribute | NC_GLOBAL | title | String | [Hg Isotopes Reference Materials] - Reference materials analyzed in the laboratory for THg isotopic composition (Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry) |
attribute | NC_GLOBAL | version | String | 1 |
attribute | NC_GLOBAL | xml_source | String | osprey2erddap.update_xml() v1.3 |
variable | Reference_Material | String | ||
attribute | Reference_Material | bcodmo_name | String | sample |
attribute | Reference_Material | description | String | Reference material name |
attribute | Reference_Material | long_name | String | Reference Material |
attribute | Reference_Material | nerc_identifier | String | https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ |
attribute | Reference_Material | units | String | unitless |
variable | Range_of_Sessions | String | ||
attribute | Range_of_Sessions | bcodmo_name | String | unknown |
attribute | Range_of_Sessions | description | String | How many stable isotope sessions it took to collect all the data. |
attribute | Range_of_Sessions | long_name | String | Range Of Sessions |
attribute | Range_of_Sessions | units | String | unitless |
variable | Average_plus_minus_2SD | String | ||
attribute | Average_plus_minus_2SD | bcodmo_name | String | unknown |
attribute | Average_plus_minus_2SD | description | String | The 2SD standard deviation of the isotopic composition of the reference materials for all the indicated sessions. |
attribute | Average_plus_minus_2SD | long_name | String | Average Plus Minus 2 SD |
attribute | Average_plus_minus_2SD | units | String | per mil (‰) |
variable | n | byte | ||
attribute | n | _FillValue | byte | 127 |
attribute | n | actual_range | byte | 7, 55 |
attribute | n | bcodmo_name | String | unknown |
attribute | n | description | String | The number individual measurements of the reference material for isotope composition in the given number of sessions. |
attribute | n | long_name | String | N |
attribute | n | units | String | unitless |
variable | d202Hg | float | ||
attribute | d202Hg | _FillValue | float | NaN |
attribute | d202Hg | actual_range | float | -0.59, 1.18 |
attribute | d202Hg | bcodmo_name | String | unknown |
attribute | d202Hg | description | String | Stable isotope ratio; δ202Hg |
attribute | d202Hg | long_name | String | D202 HG |
attribute | d202Hg | units | String | per mil (‰) |
variable | d202Hg_2SD | float | ||
attribute | d202Hg_2SD | _FillValue | float | NaN |
attribute | d202Hg_2SD | actual_range | float | 0.04, 0.26 |
attribute | d202Hg_2SD | bcodmo_name | String | unknown |
attribute | d202Hg_2SD | description | String | 2SD standard deviation of d202Hg |
attribute | d202Hg_2SD | long_name | String | D202 HG 2 SD |
attribute | d202Hg_2SD | units | String | per mil (‰) |
variable | D204Hg | float | ||
attribute | D204Hg | _FillValue | float | NaN |
attribute | D204Hg | actual_range | float | -0.18, 0.02 |
attribute | D204Hg | bcodmo_name | String | unknown |
attribute | D204Hg | description | String | Stable isotope ratio; Δ204Hg |
attribute | D204Hg | long_name | String | D204 HG |
attribute | D204Hg | units | String | per mil (‰) |
variable | D204Hg_2SD | float | ||
attribute | D204Hg_2SD | _FillValue | float | NaN |
attribute | D204Hg_2SD | actual_range | float | 0.0, 0.14 |
attribute | D204Hg_2SD | bcodmo_name | String | unknown |
attribute | D204Hg_2SD | description | String | 2SD standard deviation of D204Hg |
attribute | D204Hg_2SD | long_name | String | D204 HG 2 SD |
attribute | D204Hg_2SD | units | String | per mil (‰) |
variable | D201Hg | float | ||
attribute | D201Hg | _FillValue | float | NaN |
attribute | D201Hg | actual_range | float | -0.05, 4.3 |
attribute | D201Hg | bcodmo_name | String | unknown |
attribute | D201Hg | description | String | Stable isotope ratio; Δ201Hg |
attribute | D201Hg | long_name | String | D201 HG |
attribute | D201Hg | units | String | per mil (‰) |
variable | D201Hg_2SD | float | ||
attribute | D201Hg_2SD | _FillValue | float | NaN |
attribute | D201Hg_2SD | actual_range | float | 0.01, 0.09 |
attribute | D201Hg_2SD | bcodmo_name | String | unknown |
attribute | D201Hg_2SD | description | String | 2SD standard deviation of D201Hg |
attribute | D201Hg_2SD | long_name | String | D201 HG 2 SD |
attribute | D201Hg_2SD | units | String | per mil (‰) |
variable | D200Hg | float | ||
attribute | D200Hg | _FillValue | float | NaN |
attribute | D200Hg | actual_range | float | 0.0, 0.1 |
attribute | D200Hg | bcodmo_name | String | unknown |
attribute | D200Hg | description | String | Stable isotope ratio; Δ200Hg |
attribute | D200Hg | long_name | String | D200 HG |
attribute | D200Hg | units | String | per mil (‰) |
variable | D200Hg_2SD | float | ||
attribute | D200Hg_2SD | _FillValue | float | NaN |
attribute | D200Hg_2SD | actual_range | float | 0.0, 0.11 |
attribute | D200Hg_2SD | bcodmo_name | String | unknown |
attribute | D200Hg_2SD | description | String | 2SD standard deviation of D200Hg |
attribute | D200Hg_2SD | long_name | String | D200 HG 2 SD |
attribute | D200Hg_2SD | units | String | per mil (‰) |
variable | D199Hg | float | ||
attribute | D199Hg | _FillValue | float | NaN |
attribute | D199Hg | actual_range | float | -0.03, 5.47 |
attribute | D199Hg | bcodmo_name | String | unknown |
attribute | D199Hg | description | String | Stable isotope ratio; Δ199Hg |
attribute | D199Hg | long_name | String | D199 HG |
attribute | D199Hg | units | String | per mil (‰) |
variable | D199Hg_2SD | float | ||
attribute | D199Hg_2SD | _FillValue | float | NaN |
attribute | D199Hg_2SD | actual_range | float | 0.03, 0.12 |
attribute | D199Hg_2SD | bcodmo_name | String | unknown |
attribute | D199Hg_2SD | description | String | 2SD standard deviation of D199Hg |
attribute | D199Hg_2SD | long_name | String | D199 HG 2 SD |
attribute | D199Hg_2SD | units | String | per mil (‰) |
The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.