Limnological pH

Summary

Abstract: 

As part of the McMurdo Long Term Ecological Research (LTER) project in the Dry Valleys of Antarctica, hydrogen ion concentrations were monitored in various lakes of the region. An Orion portable pH meter was used to record hydrogen ion concentrations at depth specific intervals in perennial ice-covered lakes.

Date Range: 

October 27, 1993 to December 29, 2018
Data Citation
Priscu, J. 2019. McMurdo Dry Valleys LTER: Limnological pH. Environmental Data Initiative. DOI: 10.6073/pasta/a0c17e313c63f6b5e5e5e071e5ba6b4a. Dataset accessed 23 October 2019.
Dataset(s)

Description: 

Description of the lakes limno pH data container; units used, codes and column definitions.

Variables (click to expand): 

DATASET_CODE
  • Label:
  • Definition: Code to designate the table name
  • Type: Nominal
  • Missing values: None specified
LIMNO_RUN
  • Label: Limno Run
  • Definition: Code for lake's sampling location and date
  • Type: Nominal
  • Missing values: None specified
LOCATION NAME
  • Label: LOCATION NAME
  • Definition: Name of lake where measurement was made
  • Type: Nominal
  • Missing values: None specified
LOCATION CODE
  • Label:
  • Definition: Location in the lake where measurement was made
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label:
  • Definition: Date when sample was collected
  • Type: Date/time
  • Date format: MM/DD/YYYY
  • Missing values: None specified
DEPTH (m)
  • Label: Depth (m)
  • Definition: Distance below the piezometric water level from which sample was drawn
  • Type: Physical quantity
  • Unit: meter
  • Maximum: 80
  • Minimum: 1
  • Precision: 1
  • Missing values:
    • Required entry = None given
pH
  • Label:
  • Definition: hydrogen ion concentration found at lake depth
  • Type: Physical quantity
  • Unit: pH
  • Maximum: 14
  • Minimum: 0
  • Precision: 0.01
  • Missing values:
    • Null = None given
pH COMMENTS
  • Label: pH Comments
  • Definition: Helpful hints about the pH sample
  • Type: Nominal
  • Missing values: None specified
FILE NAME
  • Label: File Name
  • Definition: Name of file in which data was submitted
  • Type: Nominal
  • Missing values: None specified
DEPTH MASL
  • Label:
  • Definition: Depth referred to the Sea level. Distance below Mean Average Sea water level reference from which sample was drawn
  • Type: Physical quantity
  • Unit: meter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 1
  • Missing values: None specified

File: 

LIMNO_PH.csv (318.8 KB)

...or query the dataset by variables and dates of interest:

Short name: 

limnph

Dataset ID: 

63
People

Principal Investigator(s): 

Contact: 

Associated Personnel: 

Field Crew
Data Manager
Former Data Manager