bcodmo_dataset_1002509_v1

Name: [Geochemical data from methane seeps in the Cascadia Margin] - Porewater geochemical data from methane seeps in the Astoria Canyon and Hydrate Ridge along the Cascadia Margin collected during R/V Atlantis cruises in 2023 and 2024 (Collaborative Research: Investigating the source and flux of dissolved organic carbon released from methane seeps to the deep-ocean)
Creator: BCO-DMO
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.

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 mail	Institution	Dataset ID
		data	graph		files	public	[Geochemical data from methane seeps in the Cascadia Margin] - Porewater geochemical data from methane seeps in the Astoria Canyon and Hydrate Ridge along the Cascadia Margin collected during R/V Atlantis cruises in 2023 and 2024 (Collaborative Research: Investigating the source and flux of dissolved organic carbon released from methane seeps to the deep-ocean)		F I M	background			BCO-DMO	bcodmo_dataset_1002509_v1

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	cdm_data_type	String	Other
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_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.1002509.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-124.6012
attribute	NC_GLOBAL	geospatial_lat_max	double	46.24242
attribute	NC_GLOBAL	geospatial_lat_min	double	44.56981
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-124.6012
attribute	NC_GLOBAL	geospatial_lon_min	double	-125.1481
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://osprey.bco-dmo.org/dataset/1002509
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	license	String	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.
attribute	NC_GLOBAL	Northernmost_Northing	double	46.24242
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	44.56981
attribute	NC_GLOBAL	summary	String	These data include vertical profiles of concentrations and stable carbon isotope values of dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), and total organic carbon (TOC) from sediment cores collected at methane seeps and reference sites. Sediment porosity and dissolved sulfate and methane concentrations are also presented. Methane seeps in Astoria Canyon and Hydrate Ridge along the Cascadia Margin were sampled. These data were collected over two years and across two cruises: AT50-14 (R/V Atlantis, 2023) and AT50-29B (R/V Atlantis, 2024). These data are used to assess the prevalence of methane-derived DOC at methane seeps, which may contribute 'old' carbon to the deep ocean or serve as a source of reduced carbon for the deep ocean microbial loop.
attribute	NC_GLOBAL	title	String	[Geochemical data from methane seeps in the Cascadia Margin] - Porewater geochemical data from methane seeps in the Astoria Canyon and Hydrate Ridge along the Cascadia Margin collected during R/V Atlantis cruises in 2023 and 2024 (Collaborative Research: Investigating the source and flux of dissolved organic carbon released from methane seeps to the deep-ocean)
attribute	NC_GLOBAL	Westernmost_Easting	double	-125.1481
variable	Cruise		String
attribute	Cruise	long_name	String	Cruise
attribute	Cruise	units	String	unitless
variable	Region		String
attribute	Region	long_name	String	Region
attribute	Region	units	String	unitless
variable	Station		String
attribute	Station	long_name	String	Station
attribute	Station	units	String	unitless
variable	latitude		float
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	float	44.56981, 46.24242
attribute	latitude	axis	String	Y
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Lat_ddeg
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		float
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	actual_range	float	-125.1481, -124.6012
attribute	longitude	axis	String	X
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Long_ddeg
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	Core_Type		String
attribute	Core_Type	long_name	String	Core_type
attribute	Core_Type	units	String	unitless
variable	Core_retrieval_method		String
attribute	Core_retrieval_method	long_name	String	Core_retrieval_method
attribute	Core_retrieval_method	units	String	unitless
variable	Date_Collected		String
attribute	Date_Collected	long_name	String	Date_collected
attribute	Date_Collected	units	String	unitless
variable	Dive		int
attribute	Dive	actual_range	int	1586, 5214
attribute	Dive	long_name	String	Dive
attribute	Dive	units	String	unitless
variable	Water_depth_m		float
attribute	Water_depth_m	actual_range	float	599.01, 853.89
attribute	Water_depth_m	long_name	String	Water_depth_m
attribute	Water_depth_m	units	String	meters (m)
variable	Top_sed_depth_cm		float
attribute	Top_sed_depth_cm	actual_range	float	0.0, 325.0
attribute	Top_sed_depth_cm	long_name	String	Top_sed_depth_cm
attribute	Top_sed_depth_cm	units	String	centimeters below sea floor (cmbsf)
variable	Bottom_sed_depth_cm		float
attribute	Bottom_sed_depth_cm	actual_range	float	1.5, 335.0
attribute	Bottom_sed_depth_cm	long_name	String	Bottom_sed_depth_cm
attribute	Bottom_sed_depth_cm	units	String	centimeters below sea floor (cmbsf)
variable	Depth_cm		float
attribute	Depth_cm	actual_range	float	0.0, 330.0
attribute	Depth_cm	long_name	String	Depth_cm
attribute	Depth_cm	units	String	centimeters below sea floor (cmbsf)
variable	Sample_ID		String
attribute	Sample_ID	long_name	String	Sample_id
attribute	Sample_ID	units	String	unitless
variable	Core_ID		String
attribute	Core_ID	long_name	String	Core_id
attribute	Core_ID	units	String	unitless
variable	Core_Allocation		String
attribute	Core_Allocation	long_name	String	Core_allocation
attribute	Core_Allocation	units	String	unitless
variable	Flux_Regime_Location_Based		String
attribute	Flux_Regime_Location_Based	long_name	String	Flux_regime_location_based
attribute	Flux_Regime_Location_Based	units	String	unitless
variable	OLW_num		String
attribute	OLW_num	long_name	String	Olw_num
attribute	OLW_num	units	String	unitless
variable	Comments		String
attribute	Comments	long_name	String	Comments
attribute	Comments	units	String	unitless
variable	Frozen_status		String
attribute	Frozen_status	long_name	String	Frozen_status
attribute	Frozen_status	units	String	unitless
variable	CH4_mM		float
attribute	CH4_mM	actual_range	float	6.756262E-4, 10.961
attribute	CH4_mM	long_name	String	Ch4_mm
attribute	CH4_mM	units	String	millimolar (mM)
variable	del13C_CH4		float
attribute	del13C_CH4	actual_range	float	-255.79, -38.39
attribute	del13C_CH4	long_name	String	Del13c_ch4
attribute	del13C_CH4	units	String	per mille (‰)
variable	CO2_mM		float
attribute	CO2_mM	actual_range	float	0.13, 36.69
attribute	CO2_mM	long_name	String	Co2_mm
attribute	CO2_mM	units	String	millimolar (mM)
variable	del13C_CO2		float
attribute	del13C_CO2	actual_range	float	-82.93, 24.09
attribute	del13C_CO2	long_name	String	Del13c_co2
attribute	del13C_CO2	units	String	per mille (‰)
variable	Porosity		float
attribute	Porosity	actual_range	float	0.634303, 0.9032593
attribute	Porosity	long_name	String	Porosity
attribute	Porosity	units	String	unitless
variable	del13C_DIC		float
attribute	del13C_DIC	actual_range	float	-58.1158, 33.74447
attribute	del13C_DIC	long_name	String	Del13c_dic
attribute	del13C_DIC	units	String	per mille (‰)
variable	DIC_mM		float
attribute	DIC_mM	actual_range	float	0.2644642, 48.05916
attribute	DIC_mM	long_name	String	Dic_mm
attribute	DIC_mM	units	String	millimolar (mM)
variable	DOC_mM		float
attribute	DOC_mM	actual_range	float	0.305, 91.072
attribute	DOC_mM	long_name	String	Doc_mm
attribute	DOC_mM	units	String	millimolar (mM)
variable	del13C_DOC		float
attribute	del13C_DOC	actual_range	float	-93.6627, -20.547
attribute	del13C_DOC	long_name	String	Del13c_doc
attribute	del13C_DOC	units	String	per mille (‰)
variable	Sulfate_mM		float
attribute	Sulfate_mM	actual_range	float	0.01076974, 37.32276
attribute	Sulfate_mM	long_name	String	Sulfate_mm
attribute	Sulfate_mM	units	String	millimolar (mM)
variable	Chloride_mM		float
attribute	Chloride_mM	actual_range	float	29.15351, 788.1551
attribute	Chloride_mM	long_name	String	Chloride_mm
attribute	Chloride_mM	units	String	millimolar (mM)
variable	del13C_TOC		float
attribute	del13C_TOC	actual_range	float	-32.68333, -22.08322
attribute	del13C_TOC	long_name	String	Del13c_toc
attribute	del13C_TOC	units	String	per mille (‰)
variable	Corg_percent_TOC		float
attribute	Corg_percent_TOC	actual_range	float	1.584564, 3.420473
attribute	Corg_percent_TOC	long_name	String	Corg_percent_toc
attribute	Corg_percent_TOC	units	String	weight percent (wt.%)
variable	del15N_TON		float
attribute	del15N_TON	actual_range	float	0.9573438, 12.55274
attribute	del15N_TON	long_name	String	Del15n_ton
attribute	del15N_TON	units	String	per mille (‰)
variable	Norg_percent_TON		float
attribute	Norg_percent_TON	actual_range	float	0.1750972, 0.4626438
attribute	Norg_percent_TON	long_name	String	Norg_percent_ton
attribute	Norg_percent_TON	units	String	weight percent (wt.%)
variable	Norg_percent_TN		float
attribute	Norg_percent_TN	actual_range	float	0.2739855, 0.4629918
attribute	Norg_percent_TN	long_name	String	Norg_percent_tn
attribute	Norg_percent_TN	units	String	weight percent (wt.%)
variable	Corg_percent_TC		float
attribute	Corg_percent_TC	actual_range	float	2.404154, 4.330713
attribute	Corg_percent_TC	long_name	String	Corg_percent_tc
attribute	Corg_percent_TC	units	String	weight percent (wt.%)
variable	del15N_TN		float
attribute	del15N_TN	actual_range	float	6.726669, 12.45203
attribute	del15N_TN	long_name	String	Del15n_tn
attribute	del15N_TN	units	String	per mille (‰)
variable	del13C_TC		float
attribute	del13C_TC	actual_range	float	-35.96857, -21.03
attribute	del13C_TC	long_name	String	Del13c_tc
attribute	del13C_TC	units	String	per mille (‰)
variable	Hydrogen_nM		String
attribute	Hydrogen_nM	long_name	String	Hydrogen_nm
attribute	Hydrogen_nM	units	String	nanomolar (nM)
variable	pH		float
attribute	pH	actual_range	float	7.09, 9.34
attribute	pH	long_name	String	Ph
attribute	pH	units	String	unitless
variable	Alkalinity_meq_L		float
attribute	Alkalinity_meq_L	actual_range	float	2.7, 66.7
attribute	Alkalinity_meq_L	long_name	String	Alkalinity_meq_l
attribute	Alkalinity_meq_L	units	String	milliequivalents per liter
variable	H2S_mM		float
attribute	H2S_mM	actual_range	float	0.0, 21.1
attribute	H2S_mM	long_name	String	H2s_mm
attribute	H2S_mM	units	String	millimolar (mM)
variable	NH3_mgN_L		float
attribute	NH3_mgN_L	actual_range	float	0.205, 69.812
attribute	NH3_mgN_L	long_name	String	Nh3_mgn_l
attribute	NH3_mgN_L	units	String	milligrams N per liter
variable	PO4_mgP_L		String
attribute	PO4_mgP_L	long_name	String	Po4_mgp_l
attribute	PO4_mgP_L	units	String	milligrams P per liter
variable	NO2_NO3_mgN_L		String
attribute	NO2_NO3_mgN_L	long_name	String	No2_no3_mgn_l
attribute	NO2_NO3_mgN_L	units	String	milligrams N per liter
variable	B_mmol_kg		float
attribute	B_mmol_kg	actual_range	float	0.3742968, 0.5935397
attribute	B_mmol_kg	long_name	String	B_mmol_kg
attribute	B_mmol_kg	units	String	millimoles per kilogram
variable	Ba_mmol_kg		float
attribute	Ba_mmol_kg	actual_range	float	3.94394E-4, 0.008562338
attribute	Ba_mmol_kg	long_name	String	Ba_mmol_kg
attribute	Ba_mmol_kg	units	String	millimoles per kilogram
variable	Ca_mmol_kg		float
attribute	Ca_mmol_kg	actual_range	float	3.873042, 10.07181
attribute	Ca_mmol_kg	long_name	String	Ca_mmol_kg
attribute	Ca_mmol_kg	units	String	millimoles per kilogram
variable	Fe_mmol_kg		float
attribute	Fe_mmol_kg	actual_range	float	0.01002352, 0.09305826
attribute	Fe_mmol_kg	long_name	String	Fe_mmol_kg
attribute	Fe_mmol_kg	units	String	millimoles per kilogram
variable	K_mmol_kg		float
attribute	K_mmol_kg	actual_range	float	10.54939, 14.38524
attribute	K_mmol_kg	long_name	String	K_mmol_kg
attribute	K_mmol_kg	units	String	millimoles per kilogram
variable	Mg_mmol_kg		float
attribute	Mg_mmol_kg	actual_range	float	45.95229, 59.48077
attribute	Mg_mmol_kg	long_name	String	Mg_mmol_kg
attribute	Mg_mmol_kg	units	String	millimoles per kilogram
variable	Na_mmol_kg		float
attribute	Na_mmol_kg	actual_range	float	425.5598, 536.3425
attribute	Na_mmol_kg	long_name	String	Na_mmol_kg
attribute	Na_mmol_kg	units	String	millimoles per kilogram
variable	Si_mmol_kg		float
attribute	Si_mmol_kg	actual_range	float	0.3908966, 0.9587949
attribute	Si_mmol_kg	long_name	String	Si_mmol_kg
attribute	Si_mmol_kg	units	String	millimoles per kilogram
variable	Sr_mmol_kg		float
attribute	Sr_mmol_kg	actual_range	float	0.0387879, 0.1001002
attribute	Sr_mmol_kg	long_name	String	Sr_mmol_kg
attribute	Sr_mmol_kg	units	String	millimoles per kilogram

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.