http://lod.bco-dmo.org/id/dataset/642404
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2016-04-08
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Isotopes in methane in natural waters of Alaska
2016-04-14
publication
2016-04-14
revision
BCO-DMO Linked Data URI
2016-04-14
creation
http://lod.bco-dmo.org/id/dataset/642404
Adina Paytan
University of California-Santa Cruz
principalInvestigator
Dr Slawek Tulaczyk
University of California-Santa Cruz
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Paytan, A., Tulaczyk, S. (2016) Isotopes in methane in natural waters of Alaska. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 14 April 2016) Version Date 2016-04-14 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/642404 [access date]
Isotopes in methane in natural waters of Alaska Dataset Description: <p>C-13 and H-2 in methane, and methane concentration in ground, lake, river, and coastal ocean water of Alaska</p> Methods and Sampling: <p><strong>Sampling and Analytical Methodology:</strong><br />
Discrete groundwater, lake, and river water samples were collected from Toolik Lake in September 2013 and July 2014. Groundwater samples were collected in all locations from freshly dug pits or temporary PVC well points of variable depth depending on the depth of the water table. All water samples were collected by submersible pump. Sample collection followed previously established methods into glass wheaton bottles, as did measurement of methane concentration. Dissolved CH<sub>4 </sub>concentrations in water samples were measured using a headspace equilibration technique. Water samples were collected by direct filling of 125 mL or 160 mL glass serum bottles. The serum bottles were sealed without headspace using blue butyl stoppers, and saturated HgCl<sub>2</sub> solution (0.3 mL) was added immediately after sample collection to halt biological activity. Before analysis, 10 % of total water sample volume was removed; replaced by the same volume of helium gas as the headspace. Sample vials were shaken vigorously for 3 minutes and placed on a shaker for 30 min at room temperature (25 ºC).</p>
<p>CH<sub>4</sub> concentrations for all samples were measured on an SRI 310 Gas Chromatograph (GC) equipped with a flame ionization detector and an Alltech Haysep S 100/120 column (6’ x 1/8” x 0.085”). 0.25 mL of gas was removed from the headspace with a syringe for analysis, and the same volume of Milli-Q water was injected to replace the volume of the gas removed. Helium was used as the carrier gas at a flow rate of 15 mL min<sup>-1</sup>, and the column and detector temperatures were maintained at 50 °C and 150 °C, respectively. Peak integration was performed using Peak Simple NT software. Gas mixtures used for GC calibration and standard curves were made using successive dilutions of 1000 ppm CH<sub>4</sub>. Total [CH<sub>4</sub>] in the water samples was calculated by adding the measured headspace [CH<sub>4</sub>] and the amount of CH<sub>4</sub> remaining in the water sample after headspace equilibration, calculated from the solubility equation of (Yamamoto et al. 1976). The average combined standard error of sampling and analysis was 3.6 % (n= 27). After methane concentration analysis, the remaining headspace gas samples were split into two 10-mL exetainers for δ<sup>13</sup>C-CH<sub>4</sub> and δD-CH<sub>4</sub> analysis. δD-CH<sub>4</sub> was analyzed at the UC Davis Stable Isotope Facility on a ThermoScientific PreCon concentration system interfaced to a ThermoScientific Delta V Plus isotope ratio mass spectrometer (ThermoScientific, Bremen, DE). δ<sup>13</sup>C-CH<sub>4</sub> was analyzed at the Lawrence Livermore National Laboratory using the standard TraceGas preconcentration system interfaced with an IsoPrime isotope ratio mass spectrometer (IsoPrime Ltd, UK) as described by Fisher et al. (2006). The mass requirements for δ<sup>13</sup>C-CH<sub>4</sub> and for δD-CH<sub>4 </sub>analyses was 10 nmoles and 2 nmoles respectively.</p>
Funding provided by NSF Division of Polar Programs (NSF PLR) Award Number: PLR-1114485 Award URL: http://www.nsf.gov/awardsearch/showAward?AWD_ID=1114485&HistoricalAwards=false
completed
Adina Paytan
University of California-Santa Cruz
831-459-1437
Earth & Marine Sciences C308 1156 High St
Santa Cruz
CA
95064
USA
apaytan@ucsc.edu
pointOfContact
Dr Slawek Tulaczyk
University of California-Santa Cruz
813-459-5207
Earth Sciences, UCSC, 1156 High Street
Santa Cruz
CA
95064
USA
stulaczy@ucsc.edu
pointOfContact
asNeeded
Dataset Version: 14 April 2016
Unknown
Sample_ID
Date
Latitude
Longitude
sample_type
sample_depth
Temp
CH4
d2H_CH4
d13C_CH4
SRI 310 Gas Chromatograph (GC)
ThermoScientific Delta V Plus isotope ratio mass spectrometer
IsoPrime isotope ratio mass spectrometer
ThermoScientific PreCon concentration system
Submersible Pump
glass wheaton bottles
theme
None, User defined
sample identification
date
latitude
longitude
sample type
depth
water temperature
No BCO-DMO term
featureType
BCO-DMO Standard Parameters
Gas Chromatograph
Mass Spectrometer
Mass Spectrometer
Gas Analyzer
Pump
Bottle
instrument
BCO-DMO Standard Instruments
ALASKA_Paytan_Methane_2013-2014
service
Deployment Activity
Toolik Lake on the North Slope of Alaska
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
EAGER: Subterranean Ground Water Discharge (SGD) in the Arctic as a Source of Atmospheric Methane? A Proof of Concept Study
https://www.bco-dmo.org/project/641980
EAGER: Subterranean Ground Water Discharge (SGD) in the Arctic as a Source of Atmospheric Methane? A Proof of Concept Study
<p><em>Extracted from the NSF award abstract:</em><br />
The major objective of this proof of concept study is to evaluate the contribution of Subterranean Groundwater Discharge (SGD) in the Arctic to the global methane budget. Methane is a potent greenhouse gas and large natural reservoirs exist in Arctic soils and permafrost. The working hypothesis is that methane released from thawing permafrost in the Arctic is transported via groundwater flow (above and below the permafrost layer) and enters the atmosphere via coastal waters and lakes. This source of methane may be realized as an important source of natural methane to the atmosphere and may provide a positive feedback to global warming.</p>
<p>The objectives of the study are:</p>
<p>1) To estimate the magnitude of subterranean groundwater discharge and associated methane flux into lakes and coastal waters in Alaska at three representative sites.</p>
<p>2) To evaluate methane evasion rates from the water column to the atmosphere.</p>
<p>3) To determine if the contribution of methane input from subterranean groundwater discharge to the global methane budget is significant, and if so</p>
<p>4) To use the preliminary data to design a more through research plan that will enable precise estimates of fluxes and provide a basis for global extrapolation of results such that the contribution of this source to current and future climate changes and the global methane budget will be possible.</p>
<p>The project will support a graduate student full time for two years. Undergraduate students in the ACCESS program and the California Alliance for Minority Participation in Science, Engineering and Mathematics program at UCSC will also participate in the proposed work. The PIs will work with COSEE Alaska to ntegrate this work in their outreach and education activities including teacher workshops, symposia, and work with local communities in Alaska.</p>
<p><strong>PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH</strong><br /><em><strong>Note:</strong> When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).</em></p>
<p>Some links on this page may take you to non-federal websites. Their policies may differ from this site.</p>
<p>Ms. Alanna Lecher , Dr. Natasha Dimova , Ms. Katy Sparrow , Dr. Fenix Garcia-Tigreros , Mr. Joseph Murray , Dr. Slawek Tulaczyk , Dr. John Kessler. "Groundwater Discharge a Conduit for Methane Emissions in the Arctic," <em>Nature Geoscience</em>, 2015.</p>
Groundwater Discharge Methane
largerWorkCitation
project
eng; USA
oceans
Toolik Lake on the North Slope of Alaska
2016-04-14
Alaskan Pacific and Arctic Coastline, and Toolik Lake on the North Slope of Alaska
0
BCO-DMO catalogue of parameters from Isotopes in methane in natural waters of Alaska
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/642415.rdf
Name: Sample_ID
Units: text
Description: Sample_ID
http://lod.bco-dmo.org/id/dataset-parameter/642416.rdf
Name: Date
Units: YYYYMMDD
Description: Date
http://lod.bco-dmo.org/id/dataset-parameter/642417.rdf
Name: Latitude
Units: decimal degrees
Description: Latitude (South is negative)
http://lod.bco-dmo.org/id/dataset-parameter/642418.rdf
Name: Longitude
Units: decimal degrees
Description: Longitude (West is negative)
http://lod.bco-dmo.org/id/dataset-parameter/642419.rdf
Name: sample_type
Units: text
Description: sample_type
http://lod.bco-dmo.org/id/dataset-parameter/642420.rdf
Name: sample_depth
Units: meters
Description: sample_depth
http://lod.bco-dmo.org/id/dataset-parameter/642421.rdf
Name: Temp
Units: deg C
Description: Temperature
http://lod.bco-dmo.org/id/dataset-parameter/642422.rdf
Name: CH4
Units: nM
Description: CH4
http://lod.bco-dmo.org/id/dataset-parameter/642423.rdf
Name: d2H_CH4
Units: ‰
Description: d2H_CH4
http://lod.bco-dmo.org/id/dataset-parameter/642424.rdf
Name: d13C_CH4
Units: ‰
Description: d13C_CH4
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
7299
https://datadocs.bco-dmo.org/file/0AAMnl6I2Z27P2/Isotopes_Methane.csv
Isotopes_Methane.csv
Primary data file for dataset ID 642404
download
https://www.bco-dmo.org/dataset/642404/data/download
download
onLine
dataset
<p><strong>Sampling and Analytical Methodology:</strong><br />
Discrete groundwater, lake, and river water samples were collected from Toolik Lake in September 2013 and July 2014. Groundwater samples were collected in all locations from freshly dug pits or temporary PVC well points of variable depth depending on the depth of the water table. All water samples were collected by submersible pump. Sample collection followed previously established methods into glass wheaton bottles, as did measurement of methane concentration. Dissolved CH<sub>4 </sub>concentrations in water samples were measured using a headspace equilibration technique. Water samples were collected by direct filling of 125 mL or 160 mL glass serum bottles. The serum bottles were sealed without headspace using blue butyl stoppers, and saturated HgCl<sub>2</sub> solution (0.3 mL) was added immediately after sample collection to halt biological activity. Before analysis, 10 % of total water sample volume was removed; replaced by the same volume of helium gas as the headspace. Sample vials were shaken vigorously for 3 minutes and placed on a shaker for 30 min at room temperature (25 ºC).</p>
<p>CH<sub>4</sub> concentrations for all samples were measured on an SRI 310 Gas Chromatograph (GC) equipped with a flame ionization detector and an Alltech Haysep S 100/120 column (6’ x 1/8” x 0.085”). 0.25 mL of gas was removed from the headspace with a syringe for analysis, and the same volume of Milli-Q water was injected to replace the volume of the gas removed. Helium was used as the carrier gas at a flow rate of 15 mL min<sup>-1</sup>, and the column and detector temperatures were maintained at 50 °C and 150 °C, respectively. Peak integration was performed using Peak Simple NT software. Gas mixtures used for GC calibration and standard curves were made using successive dilutions of 1000 ppm CH<sub>4</sub>. Total [CH<sub>4</sub>] in the water samples was calculated by adding the measured headspace [CH<sub>4</sub>] and the amount of CH<sub>4</sub> remaining in the water sample after headspace equilibration, calculated from the solubility equation of (Yamamoto et al. 1976). The average combined standard error of sampling and analysis was 3.6 % (n= 27). After methane concentration analysis, the remaining headspace gas samples were split into two 10-mL exetainers for δ<sup>13</sup>C-CH<sub>4</sub> and δD-CH<sub>4</sub> analysis. δD-CH<sub>4</sub> was analyzed at the UC Davis Stable Isotope Facility on a ThermoScientific PreCon concentration system interfaced to a ThermoScientific Delta V Plus isotope ratio mass spectrometer (ThermoScientific, Bremen, DE). δ<sup>13</sup>C-CH<sub>4</sub> was analyzed at the Lawrence Livermore National Laboratory using the standard TraceGas preconcentration system interfaced with an IsoPrime isotope ratio mass spectrometer (IsoPrime Ltd, UK) as described by Fisher et al. (2006). The mass requirements for δ<sup>13</sup>C-CH<sub>4</sub> and for δD-CH<sub>4 </sub>analyses was 10 nmoles and 2 nmoles respectively.</p>
Specified by the Principal Investigator(s)
<p><strong>BCO-DMO Processing Notes</strong><br />
- Generated from original file "AK discrete methane concetration and isotopes.xlsx"&nbsp; contributed by Alanna Lecher<br />
- Parameter names edited to conform to BCO-DMO naming convention found at <a href="http://usjgofs.whoi.edu/naming-guidelines.html" target="_blank">Choosing Parameter Name</a><br />
- Longitude values converted to negative for West Longitude<br />
- "nd" (no data) inserted into blank cells<br />
- "NA" replaced with "nd" (no data)<br />
- Date reformatted to YYYYMMDD</p>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
SRI 310 Gas Chromatograph (GC)
SRI 310 Gas Chromatograph (GC)
PI Supplied Instrument Name: SRI 310 Gas Chromatograph (GC) PI Supplied Instrument Description:CH4 concentrations for all samples were measured on an SRI 310 Gas Chromatograph (GC) equipped with a flame ionization detector and an Alltech Haysep S 100/120 column (6’ x 1/8” x 0.085”). Instrument Name: Gas Chromatograph Instrument Short Name:Gas Chromatograph Instrument Description: Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC) Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB02/
ThermoScientific Delta V Plus isotope ratio mass spectrometer
ThermoScientific Delta V Plus isotope ratio mass spectrometer
PI Supplied Instrument Name: ThermoScientific Delta V Plus isotope ratio mass spectrometer PI Supplied Instrument Description:After methane concentration analysis, the remaining headspace gas samples were split into two 10-mL exetainers for δ13C-CH4 and δD-CH4 analysis. δD-CH4 was analyzed at the UC Davis Stable Isotope Facility on a ThermoScientific PreCon concentration system interfaced to a ThermoScientific Delta V Plus isotope ratio mass spectrometer (ThermoScientific, Bremen, DE). δ13C-CH4 was analyzed at the Lawrence Livermore National Laboratory using the standard TraceGas preconcentration system interfaced with an IsoPrime isotope ratio mass spectrometer (IsoPrime Ltd, UK) as described by Fisher et al. (2006). The mass requirements for δ13C-CH4 and for δD-CH4 analyses was 10 nmoles and 2 nmoles respectively. Instrument Name: Mass Spectrometer Instrument Short Name:Mass Spec Instrument Description: General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
IsoPrime isotope ratio mass spectrometer
IsoPrime isotope ratio mass spectrometer
PI Supplied Instrument Name: IsoPrime isotope ratio mass spectrometer PI Supplied Instrument Description:After methane concentration analysis, the remaining headspace gas samples were split into two 10-mL exetainers for δ13C-CH4 and δD-CH4 analysis. δD-CH4 was analyzed at the UC Davis Stable Isotope Facility on a ThermoScientific PreCon concentration system interfaced to a ThermoScientific Delta V Plus isotope ratio mass spectrometer (ThermoScientific, Bremen, DE). δ13C-CH4 was analyzed at the Lawrence Livermore National Laboratory using the standard TraceGas preconcentration system interfaced with an IsoPrime isotope ratio mass spectrometer (IsoPrime Ltd, UK) as described by Fisher et al. (2006). The mass requirements for δ13C-CH4 and for δD-CH4 analyses was 10 nmoles and 2 nmoles respectively. Instrument Name: Mass Spectrometer Instrument Short Name:Mass Spec Instrument Description: General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
ThermoScientific PreCon concentration system
ThermoScientific PreCon concentration system
PI Supplied Instrument Name: ThermoScientific PreCon concentration system PI Supplied Instrument Description:δD-CH4 was analyzed at the UC Davis Stable Isotope Facility on a ThermoScientific PreCon concentration system interfaced to a ThermoScientific Delta V Plus isotope ratio mass spectrometer (ThermoScientific, Bremen, DE). δ13C-CH4 was analyzed at the Lawrence Livermore National Laboratory using the standard TraceGas preconcentration system interfaced with an IsoPrime isotope ratio mass spectrometer (IsoPrime Ltd, UK) as described by Fisher et al. (2006). The mass requirements for δ13C-CH4 and for δD-CH4 analyses was 10 nmoles and 2 nmoles respectively. Instrument Name: Gas Analyzer Instrument Short Name:Gas Analyzer Instrument Description: Gas Analyzers - Instruments for determining the qualitative and quantitative composition of gas mixtures.
Submersible Pump
Submersible Pump
PI Supplied Instrument Name: Submersible Pump PI Supplied Instrument Description:Discrete seawater, groundwater, lake, and river water samples were collected from Kasitsna Bay and Toolik Lake in August 2011 and July 2012 and the Beaufort Sea August 2012. Groundwater samples were collected in all locations from freshly dug pits or temporary PVC well points of variable depth depending on the depth of the water table. All water samples were collected by submersible pump. Sample water was passed through a plastic column containing manganese dioxide impregnated acrylic fiber at a rate of Instrument Name: Pump Instrument Short Name: Instrument Description: A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps
glass wheaton bottles
glass wheaton bottles
PI Supplied Instrument Name: glass wheaton bottles PI Supplied Instrument Description:Sample collection followed previously established methods into glass wheaton bottles, as did measurement of methane concentration. Instrument Name: Bottle Instrument Short Name:Bottle Instrument Description: A container, typically made of glass or plastic and with a narrow neck, used for storing drinks or other liquids.
Deployment: ALASKA_Paytan_Methane_2013-2014
ALASKA_Paytan_Methane_2013-2014
shoreside ALASKA_Paytan
shoreside
ALASKA_Paytan_Methane_2013-2014
Adina Paytan
University of California-Santa Cruz
shoreside ALASKA_Paytan
shoreside