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glcrchem_DP_2001
Geochemistry of cryoconite holes collected from Canada Glacier in Jan 2001
Andrew
Fountain
P.O. Box 751
Portland
OR
97207
US
(503) 725-3386
andrew@pdx.edu
http://glaciers.pdx.edu/fountain/
https://orcid.org/0000-0001-5299-2273
McMurdo Dry Valleys LTER
http://mcmlter.org/
Thomas
Nylen
thomasnylen@gmail.com
https://orcid.org/0000-0001-9579-8702
field crew
Dorota
Porazinska
1JSCB Jennie Caruthers Biotech Bldg
Boulder
CO
80303
US
dorota.porazinska@colorado.edu
field crew
Kathleen
Welch
kathleen.welch@colorado.edu
https://orcid.org/0000-0003-1028-3086
associated researcher
Inigo
San Gil
Department of Biology, MSC03 2020 University of New Mexico
Albuquerque
NM
87131
US
(505) 277-2625
(505) 277-2541
isangil@lternet.edu
data manager
2014-01-01
English
The chemistry of cryoconite holes on Canada glacier was measured in January, 2001 at seven locations. Water analysis was conducted for pH, electrical conductivity and a nematodes census.
anions
cations
chemistry
cryoconite
glacier
ice
inorganic
snow
Station Keywords
inorganic nutrients
LTER Core Areas
Data contained in these files has been subjected to quality control standards imposed by the investigator. The user of this data should be aware that, while efforts have been taken to ensure that these data are of the highest quality, there is no guarantee of perfection for the data contained herein and the possibility of errors exists. If you encounter questionable data, please contact the MCM LTER data manager so that the data can be corrected or qualified. Thus, these data may be modified and future data will be appended.
Data Policies
This data package is released under the Creative Commons Attribution 4.0 International License (CC BY 4.0; http://creativecommons.org/licenses/by/4.0/), which allows consumers (hereinafter referred to as “Data Users”) to freely reuse, redistribute, transform, or build on this work (even commercially) so long as appropriate credit is provided. Accordingly, Data Users are required to properly cite this data package in any publications or in the metadata of any derived products that result from its use (in whole or in part). A recommended citation is provided on the summary metadata page associated with this data package in the McMurdo Dry Valleys LTER Data Catalog (https://mcmlter.org/data), and a generic citation may be found on the summary metadata page in the repository where this data package was obtained. When these data contribute significantly to the contents of a publication, Data Users must also acknowledge that data were provided by the NSF-supported McMurdo Dry Valleys Long Term Ecological Research program (OPP-1637708). This data package has been released in the spirit of open scientific collaboration. Hence, Data Users are strongly encouraged to consider consultation, collaboration, and/or co-authorship (as appropriate) with the data package creator(s). Data Users should be aware these data may be actively used by others for ongoing research; thus, coordination may be necessary to prevent duplicate publication. Data Users should also recognize that misinterpretation of data may occur if they are used outside the context of the original study. Hence, Data Users are urged to contact the data package creator(s) if they have any questions regarding methodology or results. While substantial efforts are made to ensure the accuracy of this data package (with all its components), complete accuracy cannot be guaranteed. Periodic updates to this data package may occur, and it is the responsibility of Data Users to check for new versions. This data package is made available “as is” and comes with no warranty of accuracy or fitness for use. The creator(s) of this data package and the repository where these data were obtained shall not be liable for any damages resulting from misinterpretation, use, or misuse of these data. Finally, as a professional courtesy, we kindly request Data Users notify the primary contact referenced in the metadata when these data are used in the production of any derivative work or publication. Notification should include an explanation of how the data were used, along with a digital copy of the derived product(s). Thank you.
https://mcm.lternet.edu/content/geochemistry-cryoconite-holes-collected-canada-glacier-jan-2001
The Canada Glacier a small glacier flowing south-east into the northern side of Taylor Valley. The glacier receives less than 10 cm of snowfall annually. Its seasonal melting feeds Lake Hoare to the west and Lake Fryxell to the east.
162.894287109375
163.057708740234
-77.598403930664
-77.632133483887
2001-01-01
2001-01-31
adds metadata in 2016
McMurdo Dry Valleys LTER
http://mcmlter.org/
McMurdo Dry Valleys LTER
http://mcmlter.org/
McMurdo Dry Valleys LTER
The Canada glacier was sampled for cryoconite holes over a period of three days by Thomas Nylen, Robin Johnston and Dorota Porazinska. Samples 1-12 were collected in the evening of 16 January 2001, samples 13-38 throughout the entire day of 17 January 2001, and the remaining sampl es throughout the entire day of 18 January 2001.Samples were taken from seven different locations on the Canada Glacier. GPS coordinates of these sites and the number of samp les taken at each site is the following: Met Station: S 77deg 36.7' and E 162deg 57.7', Number of samples = 12 Upper West: S 77deg 36.5' and E 162deg 56.4', Number of samples = 3 Upper East: ?, Number of samples = 7 Middle East: S 77deg 36.8' and E 163deg 10.1', Number of samples = 7 Lower East: S 77deg 37.4' and ?, Number of samples = 7 Lower Central: Stake #65 (need to get from Thomas), Number of samples = 6 Lower West: S 77deg 37' 17" and E 162deg 55' 56", Number of samples = 7 Middle West: S 77deg 37' 11.4" and E 162deg 56' 08.6", Number of samples = 6 At each location, cryoholes adjacent to each other were sampled. All cryoholes (except one) were frozen solid. To reach the sediment layer, a Sipre ice corer was used. As soon as a cryohole was located, the diameter in N-S and E-W directions was recorded, and followed by drilling into the ice until the sediments would show up in the drilling dust accumulating on the ice surface. All drilling was done by Thomas Nylen. When the ice core was excavated, the depth of the cryohole (from the ice surface to bottom of the sediment layer), and the width of the sediment layer were measured. Only 25 cm (from the bottom of the sediment up) of the ice core were packed into sterile Whirl-Pak large plastic bags, stored in a back pack and brought down to the Lake Hoare camp lab. The Sipre ice corer and other heavy supplies were pulled on sleds. All ice cores were left in the lab at room temperature conditions to melt. Since plastic bags can be perforated by the sharpness of ice cores, bags containing ice cores were placed in plastic beakers to prevent leakage. Ice cores melted within 16 hours. When melted, samples were shaken to mix the sediment and water and left for at least 5 hours for the sediment to settle. 300 ml of supernatant were transferred into 500 ml Nalgene bottles (washed in soap water and rinsed three times with DI water). 100 ml of this volume were filtered on a column tower using 47mm 0.4micro PC membrane filters and collected into 100ml Nalgene bottles (washed as above) and used for cation and anion concentrations. Additional 100ml was filtered through baked 47mm Whatman GF/F filters and collected into 100ml amber glass bottles (washed as above, and baked at 470degC capped with aluminum foil, then closed with original caps that were rinsed in 10% HCL and DI water) for DOC. To kill all possible organisms in the water samples and thus prevent usage of DOC, samples were fixed with 1 ml of 37% HCL ( added to the bottles right after filtration). Filtration was done by Dorota Porazinska. The remaining water with sediment was transferred from the Whirl-Pak bags into 500ml Nalgene bottles. All samples were packed into coolers and transported back to McMurdo lab on 20 January 2001 where they were processed for pH, EC, and nematodes using standard protocols. [DP 20 Jan 01].
glcrchem_DP_2001
Units and columns descriptions for the spreadsheet containing the canada glacier chem analysis of the cryo holes.
glcrchem_DP_2001.csv
11308
1
0
\r\n
column
,
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https://mcm.lternet.edu/sites/default/files/data/glcrchem_DP_2001.csv
GLACIER
GLACIER
NAME OF GLACIER WHERE MEASUREMENT IS MADE
string
NAME OF GLACIER WHERE MEASUREMENT IS MADE
LOCATION NAME
Location Name
Locations name for sampling place.
string
Locations name for sampling place.
Latitude
Latitude
Sample Latitude
degree
real
Null
None given
LONGITUDE
Longitude
Sample Longitude
degree
real
Null
None given
COMMENTS
Comments
Comments about the overall data
string
Comments about the overall data
DATE_TIME
Date_time
Date sample was collected
date
MM/DD/YYYY
SAMPLE_NAME
Sample Name
Original name for sample when gathered in field, submitted to INSTAAR
string
Original name for sample when gathered in field, submitted to INSTAAR
Br mg/L
Br mg/L
Bromine concentration
milligramsPerLiter
real
Br uM
Br uM
Bromine concentration, in micro Moles
uM
real
Ca (mg/L)
Ca (mg/L)
Calcium concentration
milligramsPerLiter
real
Ca (uM)
Ca (uM)
Concentration of Calcium in micro moles
uM
real
Cl mg/L
Cl (mg/L)
The Chloro concentration
milligramsPerLiter
real
Cl (uM)
Cl (uM)
The concentration of Chloro
uM
real
F mg/L
F mg/L
The iron concentration
milligramsPerLiter
real
F uM
F uM
The concentration of Iron in micromoles
uM
real
K mg/L
K mg/L
Potassiium concentration
milligramsPerLiter
real
K uM
K uM
The concentration of Potassium measured in micromoles
uM
real
Mg mg/L
Mg mg/L
Concentration of magnesium in milligrams per liter
milligramsPerLiter
real
Mg uM
Mg uM
Concentration of magnesium in micro moles
uM
real
Na mg/L
Na mg/L
Concentration of sodium in milligrams per liter
milligramsPerLiter
real
Na uM
Na uM
Concentration of sodium in micro moles
uM
real
NO3 mg/L
NO3 mg/L
Concentration of nitrites in milligrams per liter
milligramsPerLiter
real
NO3 uM
NO3 uM
Concentration of nitrites in micro molar
uM
real
SO4 mg/L
SO4 mg/L
Concentration of sulfates in milligrams per liter
milligramsPerLiter
real
SO4 uM
SO4 uM
Concentration of sulfates in micro molar units
uM
real
pH
pH
The concentration of hydrogen ions, as pH
dimensionless
real
microS/cm
microS/cm
The electrical conductivity as microsiemens per cm
microS/cm
real
DOC
DOC
Dissolved Organic Carbon, unknown units
string
Dissolved Organic Carbon, unknown units
File Name
File Name
The file name where the data was stored originally
string
The file name where the data was stored originally