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LJPressureTemp
Lake Joyce near shore water column pressure and temperature
Tyler
Mackey
tjmackey@unm.edu
http://tylermackey.com
https://orcid.org/0000-0001-6377-3797
Dawn
Sumner
dysumner@ucdavis.edu
McMurdo Dry Valleys LTER
http://mcmlter.org/
Frances
Rivera-Hernandez
field crew
Justin
Lawrence
field crew
Megan
Krusor
field crew
Sasha
Leidman
field crew
Lucy
Coleman
field crew
Ian
Hawes
ian.hawes@waikato.ac.nz
https://sci.waikato.ac.nz/about-us/people/ihawes
https://orcid.org/0000-0003-2471-6903
field crew
Anne
Jungblut
field crew
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
2016-07-31
English
This data set includes the deployment of an anchored pressure transducer and suspended thermistor string in Lake Joyce, Pearse Valley, as part of a NASA Astrobiology: Exobiology and Evolutionary Biology project. Instruments were deployed prior to summer melt in December 2014 near a melt water stream and retrieved in December 2015. Thermistors were positioned in the fresh water lens under the ice cover, within the water column, and on the lake bottom. This dataset is funded through the NASA grant NNX13AI60G, with USAP event G-063. This project is not funded through the MCM LTER program. MCM LTER hosts this synergistic project.
barometric pressure
water temperature
Station Keywords
water
water temperature
LTER Controlled Vocabulary
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/lake-joyce-near-shore-water-column-pressure-and-temperature
Lake Joyce lies in the Pearse Valley against the Taylor Glacier. Valley: Pearse Distance to Sea : 44 Maximum Length (km): 1 Maximum Width (km): 1 Maximum Depth (m): 35 Surface Area (km^2): 0.83 Ice Thickness Average Surface (m): 3.9 - 5.6 Volume (m^3 * 10^6): 4.9
161.608886718750
161.662445068359
-77.715972900391
-77.726486206055
301
301
meter
2014-12-07
2015-11-16
Tyler
Mackey
tjmackey@unm.edu
http://tylermackey.com
https://orcid.org/0000-0001-6377-3797
UC Davis
http://ucdavis.edu
McMurdo Dry Valleys LTER
The instrumentation deployed in this study were moored at one site offshore from Lake Joyce stream J2 (Green et al., 1988). The pressure transducer was an InSitu Rugged TROLL 100, anchored at the sediment-water interface at 11.5 m depth. Thermistors were each RBR Ruskin Solo T loggers suspended in the water column above the anchor. The deepest was attached at the sediment-water interface with the pressure transducer (Temp 1), followed by one thermistor suspended 0.8 m above the lake bottom (Temp 2) and one thermistor suspended at 5.5 m above the lake bottom (Temp 3). The lake bottom and 0.8 m suspended thermistors were both within the same stratified lake layer, whereas the 5.5 m suspended thermistor was in the freshwater lens immediately below the underside of the ice cover. These deployment locations were chosen to identify where inflowing melt water injected across the stratified lake structure. Following deployment, the pressure transducer readings were checked for drift by suspension on a fiberglass tape reel. Pressure transducer readings had a depth-dependent offset from pre-deployment with depth correction of 1.0448*[transducer depth(m)]-0.0884m, with assumed water specific gravity of 0.999. This correction has not been applied to the raw data set. Thermistors were checked for drift by suspension in ice water and did not show any evidence for instrumental drift.
LJPressure-Temp
Defintions for the lake Joyce water column study spreadsheet: units, codes, column definitions.
LJpressure-temp.csv
2723415
1
\r\n
column
,
https://mcm.lternet.edu/sites/default/files/data/LJpressure-temp.csv
Date
Date
Date and time when samples were acquired
date
MM/DD/YYYY HH:MI24
Pressure (mB)
Pressure (mB)
The absolute pressure, measured in millibars
millibar
real
Temp 1 C
Temp 1 C
Temperature measured in celsius with the first thermistor
celsius
real
Temp 2 C
Temp 2 C
Temperature measured in celsius with the second thermistor
celsius
real
Temp 3 C
Temp 3 C
Temperature measured in celsius with the third thermistor
celsius
real