Dataset: Isotopes d2H and d18O in natural waters of Alaska

Name: Isotopes d2H and d18O in Alaskan ground, lake, and river water from the area of Toolik Lake, Alaska from 2012-2014 (Groundwater Discharge Methane project)
Published: 2017-01-03
Keywords: inlandWaters

Cite This Dataset

Spatial Extent: N:68.6387 E:-149.5639 S:68.1186 W:-149.6889

Project:

EAGER: Subterranean Ground Water Discharge (SGD) in the Arctic as a Source of Atmospheric Methane? A Proof of Concept Study (Groundwater Discharge Methane)

Principal Investigator:

Adina Paytan (University of California-Santa Cruz, UCSC)

Co-Principal Investigator:

Dr Slawek Tulaczyk (University of California-Santa Cruz, UCSC)

Contact:

Adina Paytan (University of California-Santa Cruz, UCSC)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version Date:

2017-01-03

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Isotopes d2H and d18O in Alaskan ground, lake, and river water from the area of Toolik Lake, Alaska from 2012-2014 (Groundwater Discharge Methane project)

Expand/Collapse All

Description

This dataset contains isotopic ratios d2H and d18O in Alaskan natural waters. The sampling location is included for each sample (lake, river, etc.) as well as the latitude and longitude of the sample site.

Methods & Sampling

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 as water was filtered to 0.45 microns into 2 mL gas chromatography vials. Samples were analyzed by the UC Davis Stable Isotope Facility on a Laser Water Isotope Analyzer V2 (Los Gatos Research Inc). Precision is typically ≤0.3 permil for d18O-H2O and ≤0.8 permil for dD-H2O. Values are reported relative to Vienna Standard Mean Ocean Water (VSMOW).

Data Processing Description

No further processing was done.

BCO-DMO data manager notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* blank values replaced with no data value 'nd'
* replaced 'N/A' values with "nd" for no data
* combined 2012 and 2014 data into one dataset and added column "year"
* changed the original longitudes to negative to place them in Alaska.
* sorted dataset by year, then water sample type (ground water, lake water, river water), then date

Data Files

File
H2Oisotopes.csv (Comma Separated Values (.csv), 5.49 KB) MD5:76e771f36a98224eaa911a444593ffb9 Primary data file for dataset ID 671960

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Polar Programs	PLR-1114485

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
ALASKA_Paytan_water_2012-2014		2012-07-23	shoreside ALASKA_Paytan	Adina Paytan (Principal Investigator)	data info

Instruments

Isotope-ratio Mass Spectrometer

Supplied Name: Laser Water Isotope Analyzer V2

Supplied Description:

Laser Water Isotope Analyzer V2 (Los Gatos Research Inc)

Instrument Type

Generic Name: Isotope-ratio Mass Spectrometer

Acronym: IR Mass Spec; IRMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/

Generic Description:

The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).

Pump

Supplied Name: submersible pump

Supplied Description:

Instrument Type

Generic Name: Pump

Generic 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

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
year	Year of sample aquisition	unitless	year
water_type	Descriptive name of sample water type	unitless	sample_descrip
date	Date of sample in format yyyy-mm-dd	unitless	date
lat	Latitude of sample; north is positive	decimal degrees	lat
lon	Longitude of sample; west is negative	decimal degrees	lon
temp	Temerature of sampled water	degrees Celsius	temp
water_d2H	Isotopic ratio of deuterium (2H) to a single hydrogen (2H:1H) in water	permil (0/00)	d2H
water_d18O	Isotopic ratio of 18O:16O in water	permil (0/00)	d18O

Status message

Database

Contribute Data

Dataset: Isotopes d2H and d18O in natural waters of Alaska