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,.odvTxt
attribute NC_GLOBAL acquisition_description String Samples for this dataset were separated into different worksheets depending on\nthe sample collection method (worksheets have been combined into one dataset;\n\\\"Collection_Method\\\" column indicates the source worksheet).\n \n\\\"CTD\\\" samples were collected from 20L Niskin bottles associated with CTD\ncasts by slowly (<1 L/min) draining the sample via a sampling tube from the\nspigot on the Niskin bottle through a dry, 25 g aliquot of acrylic fiber\nimpregnated with MnO2 (Moore, 1976). These \\\"Mn fibers\\\" quantitatively sorb\nRa isotopes from the aqueous phase.\n \n\\\"Core-top waters\\\" were collected by gravity siphoning water overlying\nsediment cores that were collected as push cores by HOV Alvin, filtering the\nsamples through 0.45 um cellulose filters, then slowly (< 1 L/min) passing the\neffluent over 25 g Mn fiber.\n \n\\\"Alvin Slurp\\\"\\u00a0samples were collected using the slurp gun on HOV Alvin.\nThese sample waters were stored onboard Alvin until they were recovered on the\nship and slowly (< 1 L/min) passed over 25 g Mn fiber.\n \nFinally, \\\"Alvin Niskins\\\" were recovered from one or several of the 1.25 L\nNiskin bottles on Alvin. On the ship, these water samples were drained from\nthe Niskin bottles and slowly (<1 L/min) passed over 25 g Mn fiber.\\u00a0\n \nAfter passing the water samples over the Mn fibers, the fibers were rinsed\nwith Ra-free fresh water, then dried using a compressed air stream to a\nsuitable humidity (Sun and Torgersen, 1998). The fibers were then counted\nimmediately on a Radium Delayed Coincidence Counter (Moore and Arnold, 1996)\nfor total Ra-224 and Ra-223 activity. The fibers were counted again after 3\nweeks to measure the supported Ra-224 activity from any sorbed Th-228 on the\nfibers. This activity is subtracted from the total Ra-224 activity derived\nfrom the initial measurement to compute the excess Ra-224 activity (the\nactivity reported in the dataset). Ra-226 activities were measured by sealing\nthe Mn fibers in air-tight cartridges for ~1 week and measuring the\naccumulated Rn-222 (daughter product of Ra-226) on a radon emanation line\n(Peterson et al., 2009). Fibers were then counted an additional time on the\nRadium Delayed Coincidence Counter after ~1 year from collection for Ra-228\n(as the change in Th-228 activity from the 3-week measurement; Moore, 2008).\nAnalytical uncertainties are based on counting statistics (as 1-s standard\ndeviation of the total counts logged, propagated through the activity\ncomputations).
attribute NC_GLOBAL awards_0_award_nid String 754842
attribute NC_GLOBAL awards_0_award_number String OCE-1558829
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1558829 (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 Guaymas Water Column Radium \n   from cruise AT37-06 \n  PI: Richard Peterson \n  Version date: 26-Nov-2019
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 2019-11-26T20:26:41Z
attribute NC_GLOBAL date_modified String 2019-12-09T17:38:23Z
attribute NC_GLOBAL defaultDataQuery String &amp;time&lt;now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.782977.1
attribute NC_GLOBAL Easternmost_Easting double -111.381567
attribute NC_GLOBAL geospatial_lat_max double 27.509165
attribute NC_GLOBAL geospatial_lat_min double 27.006592
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -111.381567
attribute NC_GLOBAL geospatial_lon_min double -111.681819
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 2000.0
attribute NC_GLOBAL geospatial_vertical_min double 50.0
attribute NC_GLOBAL geospatial_vertical_positive String down
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/782977 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Niskin bottle
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Samples were collected from 20L Niskin bottles associated with CTD casts and from HOV Alvin's Niskin bottles.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 783010
attribute NC_GLOBAL instruments_0_description String A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends.  The bottles can be attached individually on a hydrowire or deployed in 12, 24 or 36 bottle Rosette systems mounted on a frame and combined with a CTD.  Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Niskin bottle
attribute NC_GLOBAL instruments_0_instrument_nid String 413
attribute NC_GLOBAL instruments_1_acronym String CTD
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 783013
attribute NC_GLOBAL instruments_1_description String The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column.  The instrument is lowered via cable through the water column and permits scientists observe the physical properties in real time via a conducting cable connecting the CTD to a deck unit and computer on the ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or  radiometers.  It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.  This instrument designation is used when specific make and model are not known.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/130/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String CTD profiler
attribute NC_GLOBAL instruments_1_instrument_nid String 417
attribute NC_GLOBAL instruments_1_supplied_name String CTD
attribute NC_GLOBAL instruments_2_acronym String Tube Core
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 783011
attribute NC_GLOBAL instruments_2_description String A plastic tube, about 40 cm (16 inches) long, is pushed into the sediment by Alvin's manipulator arm to collect a sediment core.
attribute NC_GLOBAL instruments_2_instrument_name String Alvin tube core
attribute NC_GLOBAL instruments_2_instrument_nid String 641
attribute NC_GLOBAL instruments_2_supplied_name String HOV Alvin push core
attribute NC_GLOBAL instruments_3_acronym String RaDeCC
attribute NC_GLOBAL instruments_3_dataset_instrument_nid String 783025
attribute NC_GLOBAL instruments_3_description String The RaDeCC is an alpha scintillation counter that distinguishes decay events of short-lived radium daughter products based on their contrasting half-lives. This system was pioneered by Giffin et al. (1963) and adapted for radium measurements by Moore and Arnold (1996).\n\nReferences:\nGiffin, C., A. Kaufman, W.S. Broecker (1963). Delayed coincidence counter for the assay of actinon and thoron. J. Geophys. Res., 68, pp. 1749-1757.\nMoore, W.S., R. Arnold (1996). Measurement of 223Ra and 224Ra in coastal waters using a delayed coincidence counter.\nJ. Geophys. Res., 101 (1996), pp. 1321-1329.\nCharette, Matthew A.; Dulaiova, Henrieta; Gonneea, Meagan E.; Henderson, Paul B.; Moore, Willard S.; Scholten, Jan C.; Pham, M. K. (2012). GEOTRACES radium isotopes interlaboratory comparison experiment. Limnology and Oceanography - Methods, vol 10, pg 451.
attribute NC_GLOBAL instruments_3_instrument_name String Radium Delayed Coincidence Counter
attribute NC_GLOBAL instruments_3_instrument_nid String 688
attribute NC_GLOBAL instruments_4_dataset_instrument_nid String 783012
attribute NC_GLOBAL instruments_4_description String Small and large capacity vacuum pump samplers. May have single or multiple chambers. See https://www.whoi.edu/main/alvin/subsystems/optional-scientific-samplers
attribute NC_GLOBAL instruments_4_instrument_name String Alvin Slurp Sampler
attribute NC_GLOBAL instruments_4_instrument_nid String 644821
attribute NC_GLOBAL instruments_4_supplied_name String HOV Alvin slurp gun
attribute NC_GLOBAL keywords String activity, alvin, Alvin_Dive_Number, bco, bco-dmo, biological, cast, chemical, collection, Collection_Method, core, Core_Number, data, dataset, date, depth, dive, dmo, erddap, latitude, longitude, management, method, number, oceanography, office, preliminary, ra223, Ra223_Activity, Ra223_Unc, ra224, Ra224_Activity, Ra224_Unc, ra226, Ra226_Activity, Ra226_Unc, ra228, Ra228_Activity, Ra228_Unc, sample, Sample_Volume, time, unc, volume
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/782977/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/782977 (external link)
attribute NC_GLOBAL Northernmost_Northing double 27.509165
attribute NC_GLOBAL param_mapping String {'782977': {'Latitude': 'flag - latitude', 'Date_Time': 'flag - time', 'Depth': 'flag - depth', 'Longitude': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/782977/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Coastal Carolina University
attribute NC_GLOBAL people_0_person_name String Richard N. Peterson
attribute NC_GLOBAL people_0_person_nid String 701779
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 Guaymas Basin Ra 224 Approach
attribute NC_GLOBAL projects_0_acronym String Guaymas Basin Ra 224 Approach
attribute NC_GLOBAL projects_0_description String NSF Award Abstract:\nThis project proposes to validate a new approach to measure porewater flow dynamics from deep sea sediments using a biologically conservative, naturally-occurring tracer, Radium 224, which is constantly produced by porewaters. The technique will be validated using independent measures of porewater fluxes (i.e. heat gradients and magnesium profiles) during a cruise to the Guaymas Basin in the Gulf of California that is already funded by NSF. Once validated the technique will be broadly applicable to all sedimentary environments including oceans, rivers/streams, wetlands and lakes. Understanding porewater flow dynamics is important to understanding ocean and other aquatic system chemical budgets, microbial ecology and global heat flow.\nThis proposal hypothesizes that the short-lived radium isotope Ra 224 may serve as an effective tracer of porewater flows in deep ocean systems, regardless of the type or composition of seepages, because its sources and sinks can be uniquely constrained. The method will be tested in the Guaymas Basin which is comprised of areas undergoing a range of seepage rates and offers porewater thermal gradients resulting from the hydrothermal system. As a result heat fluxes and gradients in magnesium and other cations affected by high-temperature water/rock interactions can be used to independently validate the porewater flows measured by Ra 224.
attribute NC_GLOBAL projects_0_end_date String 2019-07
attribute NC_GLOBAL projects_0_geolocation String Guaymas Basin, Gulf of California
attribute NC_GLOBAL projects_0_name String Validation of a New Geochemical Approach to Constrain Deep Sea Porewater Residence Times and Advection Rates: Applications to Biogeochemical Cycling at Guaymas Basin
attribute NC_GLOBAL projects_0_project_nid String 754843
attribute NC_GLOBAL projects_0_start_date String 2016-02
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 27.006592
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String This dataset presents dissolved radium isotope activities around Guaymas Basin.
attribute NC_GLOBAL time_coverage_end String 2016-12-25T00:08Z
attribute NC_GLOBAL time_coverage_start String 2016-12-12T06:42Z
attribute NC_GLOBAL title String [Guaymas Water Column Radium AT37-06] - Dissolved radium isotope activity around Guaymas Basin from samples collected by CTD and HOV Alvin during R/V Atlantis cruise AT37-06 in December 2016 (Validation of a New Geochemical Approach to Constrain Deep Sea Porewater Residence Times and Advection Rates: Applications to Biogeochemical Cycling at Guaymas Basin)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -111.681819
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Collection_Method String
attribute Collection_Method bcodmo_name String instrument
attribute Collection_Method description String Sample collection method
attribute Collection_Method long_name String Collection Method
attribute Collection_Method units String unitless
variable Alvin_Dive_Number short
attribute Alvin_Dive_Number _FillValue short 32767
attribute Alvin_Dive_Number actual_range short 4861, 4872
attribute Alvin_Dive_Number bcodmo_name String dive_id
attribute Alvin_Dive_Number colorBarMaximum double 100.0
attribute Alvin_Dive_Number colorBarMinimum double 0.0
attribute Alvin_Dive_Number description String Numeric identifier for Alvin dive (not applicable where Collection_Method = CTD)
attribute Alvin_Dive_Number long_name String Alvin Dive Number
attribute Alvin_Dive_Number units String unitless
variable Cast byte
attribute Cast _FillValue byte 127
attribute Cast actual_range byte 1, 11
attribute Cast bcodmo_name String cast
attribute Cast description String Numerical reference for CTD cast # (Collection_Method = CTD only)
attribute Cast long_name String Cast
attribute Cast units String unitless
variable depth double
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 50.0, 2000.0
attribute depth axis String Z
attribute depth bcodmo_name String depth
attribute depth colorBarMaximum double 8000.0
attribute depth colorBarMinimum double -8000.0
attribute depth colorBarPalette String TopographyDepth
attribute depth description String Sampling depth (Collection_Method = CTD only)
attribute depth ioos_category String Location
attribute depth long_name String Depth
attribute depth nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/DEPH/ (external link)
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable Core_Number byte
attribute Core_Number _FillValue byte 127
attribute Core_Number actual_range byte 1, 29
attribute Core_Number bcodmo_name String core_id
attribute Core_Number colorBarMaximum double 100.0
attribute Core_Number colorBarMinimum double 0.0
attribute Core_Number description String Core tube identifier for the specific Alvin dive (Collection_Method = Core_top_waters only)
attribute Core_Number long_name String Core Number
attribute Core_Number units String unitless
variable time double
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.48152492E9, 1.48262448E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String Sampling date and time (GMT); format: yyyy-mm-ddTHH:MM
attribute time ioos_category String Time
attribute time long_name String Date Time
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute time source_name String Date_Time
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01T00:00Z
attribute time units String seconds since 1970-01-01T00:00:00Z
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 27.006592, 27.509165
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 Sampling 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 longitude double
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -111.681819, -111.381567
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 Sampling 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 Sample_Volume float
attribute Sample_Volume _FillValue float NaN
attribute Sample_Volume actual_range float 0.09, 78.4
attribute Sample_Volume bcodmo_name String sample_volume
attribute Sample_Volume description String Sample volume
attribute Sample_Volume long_name String Sample Volume
attribute Sample_Volume units String liters (L)
variable Ra223_Activity String
attribute Ra223_Activity bcodmo_name String radioactive_isotope_conc
attribute Ra223_Activity description String Measured activity of Ra-223; \"BD\" = below detection
attribute Ra223_Activity long_name String Ra223 Activity
attribute Ra223_Activity nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/WRAD/ (external link)
attribute Ra223_Activity units String dpm/100L
variable Ra223_Unc String
attribute Ra223_Unc bcodmo_name String radioactive_isotope_conc
attribute Ra223_Unc description String 1-s analytical uncertainty in measured activity of Ra-223; \"BD\" = below detection
attribute Ra223_Unc long_name String Ra223 Unc
attribute Ra223_Unc nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/WRAD/ (external link)
attribute Ra223_Unc units String dpm/100L
variable Ra224_Activity String
attribute Ra224_Activity bcodmo_name String radioactive_isotope_conc
attribute Ra224_Activity description String Measured activity of Ra-224; \"BD\" = below detection
attribute Ra224_Activity long_name String Ra224 Activity
attribute Ra224_Activity nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/WRAD/ (external link)
attribute Ra224_Activity units String dpm/100L
variable Ra224_Unc String
attribute Ra224_Unc bcodmo_name String radioactive_isotope_conc
attribute Ra224_Unc description String 1-s analytical uncertainty in measured activity of Ra-224; \"BD\" = below detection
attribute Ra224_Unc long_name String Ra224 Unc
attribute Ra224_Unc nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/WRAD/ (external link)
attribute Ra224_Unc units String dpm/100L
variable Ra226_Activity float
attribute Ra226_Activity _FillValue float NaN
attribute Ra226_Activity actual_range float 11.968, 1838.422
attribute Ra226_Activity bcodmo_name String radioactive_isotope_conc
attribute Ra226_Activity description String Measured activity of Ra-226; \"BD\" = below detection
attribute Ra226_Activity long_name String Ra226 Activity
attribute Ra226_Activity nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/WRAD/ (external link)
attribute Ra226_Activity units String dpm/100L
variable Ra226_Unc float
attribute Ra226_Unc _FillValue float NaN
attribute Ra226_Unc actual_range float 0.505, 616.836
attribute Ra226_Unc bcodmo_name String radioactive_isotope_conc
attribute Ra226_Unc description String 1-s analytical uncertainty in measured activity of Ra-226; \"BD\" = below detection
attribute Ra226_Unc long_name String Ra226 Unc
attribute Ra226_Unc nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/WRAD/ (external link)
attribute Ra226_Unc units String dpm/100L
variable Ra228_Activity String
attribute Ra228_Activity bcodmo_name String radioactive_isotope_conc
attribute Ra228_Activity description String Measured activity of Ra-223; \"BD\" = below detection
attribute Ra228_Activity long_name String Ra228 Activity
attribute Ra228_Activity nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/WRAD/ (external link)
attribute Ra228_Activity units String dpm/100L
variable Ra228_Unc String
attribute Ra228_Unc bcodmo_name String radioactive_isotope_conc
attribute Ra228_Unc description String 1-s analytical uncertainty in measured activity of Ra-223; \"BD\" = below detection
attribute Ra228_Unc long_name String Ra228 Unc
attribute Ra228_Unc nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/WRAD/ (external link)
attribute Ra228_Unc units String dpm/100L

 
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