ERDDAP > tabledap > Data Access Form

Dataset Title:	[Sediment pushcore porewater geochemistry from southern California seeps May 2021] - Porewater geochemistry from sediment pushcores collected by ROV Doc Ricketts from Southern California Seeps in May 2021 (Collaborative Research: Redefining the footprint of deep ocean methane seepage for benthic ecosystems)
Institution:	BCO-DMO   (Dataset ID: bcodmo_dataset_908217_v1)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Files | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum	Maximum
serial (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		15500	16130
Fluoride (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0486	0.1011
Acetate (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0215	0.1231
Formate (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0152	0.115
Chloride (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		466.9513	578.5947
Bromide (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.7416	1.0756
Nitrate (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.1607	0.1607
Sulfate (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.5946	29.3207
Thiosulfate (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0277	3.3315
Phosphate (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0582	0.1297
Lithium (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.022	0.0757
Sodium (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		375.0417	711.9685
Ammonium (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.1935	6.9795
Potassium (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		5.8267	16.1018
Magnesium (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		26.5625	72.6506
Calcium (millimolar (mM))	!= =~ <= >= = < >		!= =~ <= >= = < >		0.3566	17.8967
pH (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		7.3	9.2
Dive (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"DR1329"	"DR1334"
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		32.9042	36.77672
longitude (Long, degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		-122.085	-117.7823
Horizon (cenimeters (cm))	!= =~ <= >= = < >		!= =~ <= >= = < >		1	63
Date_UTC (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"2021-05-19"	"2021-05-24"
Time_UTC (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"14:24:42"	"23:27:20"
depth (Depth_m, m)	!= =~ <= >= = < >		!= =~ <= >= = < >		297.4	1023.1
Station (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"Del Mar Seeps"	"Santa Monica Mound..."
Sample_Name (unitless)	!= =~ <= >= = < >		!= =~ <= >= = < >		"DR1329_LC62"	"DR1334_LC66"
time (Iso_datetime_utc, UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2021-05-19T16:41:33Z	2021-05-24T15:32:25Z

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" serial Fluoride Acetate Formate Chloride Bromide Nitrate Sulfate Thiosulfate Phosphate Lithium Sodium Ammonium Potassium Magnesium Calcium pH Dive latitude longitude Horizon Date_UTC Time_UTC depth Station Sample_Name time serial Fluoride Acetate Formate Chloride Bromide Nitrate Sulfate Thiosulfate Phosphate Lithium Sodium Ammonium Potassium Magnesium Calcium pH Dive latitude longitude Horizon Date_UTC Time_UTC depth Station Sample_Name time serial Fluoride Acetate Formate Chloride Bromide Nitrate Sulfate Thiosulfate Phosphate Lithium Sodium Ammonium Potassium Magnesium Calcium pH Dive latitude longitude Horizon Date_UTC Time_UTC depth Station Sample_Name time serial Fluoride Acetate Formate Chloride Bromide Nitrate Sulfate Thiosulfate Phosphate Lithium Sodium Ammonium Potassium Magnesium Calcium pH Dive latitude longitude Horizon Date_UTC Time_UTC depth Station Sample_Name time serial Fluoride Acetate Formate Chloride Bromide Nitrate Sulfate Thiosulfate Phosphate Lithium Sodium Ammonium Potassium Magnesium Calcium pH Dive latitude longitude Horizon Date_UTC Time_UTC depth Station Sample_Name time ")

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .dataTable - A JSON file formatted for use with the Google Visualization client library (Google Charts). .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriCsv - Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .geoJson - Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. .graph - View a Make A Graph web page. .help - View a web page with a description of tabledap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncCF - Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). .ncCFHeader - View the UTF-8 header (the metadata) for the .ncCF file. .ncCFMA - Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). .ncCFMAHeader - View the UTF-8 header (the metadata) for the .ncCFMA file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). .subset - View an HTML form which uses faceted search to simplify picking subsets of the data. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .kml - View a .kml file, suitable for Google Earth. .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  serial {
    Int32 actual_range 15500, 16130;
    String long_name "Serial";
    String units "unitless";
  }
  Fluoride {
    Float32 actual_range 0.0486, 0.1011;
    String long_name "Fluoride";
    String units "millimolar (mM)";
  }
  Acetate {
    Float32 actual_range 0.0215, 0.1231;
    String long_name "Acetate";
    String units "millimolar (mM)";
  }
  Formate {
    Float32 actual_range 0.0152, 0.115;
    String long_name "Formate";
    String units "millimolar (mM)";
  }
  Chloride {
    Float32 actual_range 466.9513, 578.5947;
    String long_name "Chloride";
    String units "millimolar (mM)";
  }
  Bromide {
    Float32 actual_range 0.7416, 1.0756;
    String long_name "Bromide";
    String units "millimolar (mM)";
  }
  Nitrate {
    Float32 actual_range 0.1607, 0.1607;
    String long_name "Nitrate";
    String units "millimolar (mM)";
  }
  Sulfate {
    Float32 actual_range 0.5946, 29.3207;
    String long_name "Sulfate";
    String units "millimolar (mM)";
  }
  Thiosulfate {
    Float32 actual_range 0.0277, 3.3315;
    String long_name "Thiosulfate";
    String units "millimolar (mM)";
  }
  Phosphate {
    Float32 actual_range 0.0582, 0.1297;
    String long_name "Phosphate";
    String units "millimolar (mM)";
  }
  Lithium {
    Float32 actual_range 0.022, 0.0757;
    String long_name "Lithium";
    String units "millimolar (mM)";
  }
  Sodium {
    Float32 actual_range 375.0417, 711.9685;
    String long_name "Sodium";
    String units "millimolar (mM)";
  }
  Ammonium {
    Float32 actual_range 0.1935, 6.9795;
    String long_name "Ammonium";
    String units "millimolar (mM)";
  }
  Potassium {
    Float32 actual_range 5.8267, 16.1018;
    String long_name "Potassium";
    String units "millimolar (mM)";
  }
  Magnesium {
    Float32 actual_range 26.5625, 72.6506;
    String long_name "Magnesium";
    String units "millimolar (mM)";
  }
  Calcium {
    Float32 actual_range 0.3566, 17.8967;
    String long_name "Calcium";
    String units "millimolar (mM)";
  }
  pH {
    Float32 actual_range 7.3, 9.2;
    String long_name "Ph";
    String units "unitless";
  }
  Dive {
    String long_name "Dive";
    String units "unitless";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 32.9042, 36.77672;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -122.085, -117.7823;
    String axis "X";
    String ioos_category "Location";
    String long_name "Long";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Horizon {
    Int32 actual_range 1, 63;
    String long_name "Horizon";
    String units "cenimeters (cm)";
  }
  Date_UTC {
    String long_name "Date_utc";
    String units "unitless";
  }
  Time_UTC {
    String long_name "Time_utc";
    String units "unitless";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 297.4, 1023.1;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth_m";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  Station {
    String long_name "Station";
    String units "unitless";
  }
  Sample_Name {
    String long_name "Sample_name";
    String units "unitless";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.621442493e+9, 1.621870345e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Iso_datetime_utc";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_url "https://www.bco-dmo.org/";
    String defaultDataQuery "&time<now";
    String doi "10.26008/1912/bco-dmo.908217.1";
    Float64 Easternmost_Easting -117.7823;
    Float64 geospatial_lat_max 36.77672;
    Float64 geospatial_lat_min 32.9042;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -117.7823;
    Float64 geospatial_lon_min -122.085;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 1023.1;
    Float64 geospatial_vertical_min 297.4;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2025-08-31T08:55:06Z (local files)
2025-08-31T08:55:06Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_908217_v1.html";
    String infoUrl "https://osprey.bco-dmo.org/dataset/908217";
    String institution "BCO-DMO";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    Float64 Northernmost_Northing 36.77672;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 32.9042;
    String summary "This dataset provides geochemical data (major ions) for porewaters from sediment pushcores collected by a remotely-operated vehicle (ROV) deployed from the R/V Western Flyer in May 2021 (WF05-21) at the Del Mar and Santa Monica Seeps and in Newport Canyon, California, USA. Cores were sectioned into 1-3 centimeter (cm) horizons, and porewater was extracted shipboard using an argon-pressurized squeezer. Porewater samples were frozen at sea and thawed just before analysis. This dataset reports concentrations of fluoride, acetate, formate, chloride, bromide, nitrate, sulfate, thiosulfate, and phosphate anions and lithium, sodium, potassium, magnesium, and calcium cations. Measurements were made using the Thermo Dual Dionex Integrion HPIC ion chromatography system with either a 250-millimeter (mm) Dionex IonPac AS19-4um column (anions) or a 250 mm Dionex IonPac CS16-4um column (cations), in the Resnick Water and Environment Laboratory at the California Institute of Technology (Caltech).";
    String time_coverage_end "2021-05-24T15:32:25Z";
    String time_coverage_start "2021-05-19T16:41:33Z";
    String title "[Sediment pushcore porewater geochemistry from southern California seeps May 2021] - Porewater geochemistry from sediment pushcores collected by ROV Doc Ricketts from Southern California Seeps in May 2021 (Collaborative Research: Redefining the footprint of deep ocean methane seepage for benthic ecosystems)";
    Float64 Westernmost_Easting -122.085;
  }
}

 

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Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP Data Access Protocol (DAP) and its selection constraints.

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

• (easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
• (easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
• (not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.

 

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