Published on McMurdo Dry Valleys LTER (https://mcm.lternet.edu)

VG_DESORP

Description: 

This data table provides sediment sample information and concentrations of analytes for extraction solution blanks and sample aliquots. Data are organized by sampling location and treatment.

File: 

File mcmlter-strm-singley-vg_desorp-20210325.csv

Variables (click to expand): 

DATASET_CODE
  • Label: Dataset code
  • Definition: Internal dataset code representing Von Guerard sediment desorption assay.
  • Type: Nominal
  • Missing values: None specified
STRMGAGEID
  • Label: Stream Gage ID
  • Definition: Code representing stream gage station.
  • Type: Nominal
  • Missing values: None specified
STREAM_NAME
  • Label: Stream name
  • Definition: Name of stream.
  • Type: Nominal
  • Missing values: None specified
SAMPLE_ID
  • Label: Sample ID
  • Definition: Alphanumeric code indicating lateral location of sample on transect, treatment, and replicate id. 1-5 = lateral location from wetted margin on stream left to wetted margin on stream right, with 3 at the thalweg; 0,40,80,160,320 indicate treatment solution conductivity; A-C indicate replicate identifier.
  • Type: Nominal
  • Missing values: None specified
SAMPLE_TYPE
  • Label: Sample type
  • Definition: Alphanumeric code identifying sample type. Sample = treated sediment sample; solution_blank = treatment solution without sediment.
  • Type: Nominal
  • Missing values: None specified
LATERAL_POSITION
  • Label: Lateral position
  • Definition: Sample location identifier from lateral transect across stream. 1-5 = lateral location from wetted margin on stream left to wetted margin on stream right, with 3 at the thalweg.
  • Type: Nominal
  • Missing values: None specified
SC_US_CM
  • Label: Specific conductivity
  • Definition: Actual specific conductivity of treatment solution
  • Type: Physical quantity
  • Unit: microSiemensPerCentimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
WET_SED_MASS_G
  • Label: Wet sediment mass
  • Definition: Initial sediment mass under field moisture conditions.
  • Type: Physical quantity
  • Unit: grams
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
VWC
  • Label: Volumetric water content
  • Definition: Volumetric water content in decimal percent.
  • Type: Nominal
  • Missing values: None specified
DRY_SED_MASS_G
  • Label: Dry sediment mass
  • Definition: Estimated dry sediment mass based on WET_SED_MASS_g and VWC.
  • Type: Physical quantity
  • Unit: grams
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
SOL_VOL
  • Label: Solution volume
  • Definition: Treatment solution volume added to sample.
  • Type: Physical quantity
  • Unit: milliliter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
K_MGL
  • Label: Potassium concentration
  • Definition: Concentration of potassium. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
CL_MGL
  • Label: Chloride concentration
  • Definition: Concentration of chloride. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NH4_MGL
  • Label: Ammonium concentration
  • Definition: Concentration of nitrogen as ammonium. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NH4_UG_G_DRY_SED
  • Label: Normalized ammonium concentration
  • Definition: Normalized mass of nitrogen as ammonium per gram of dry sediment. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: microgramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NO3_MGL
  • Label: Nitrate concentration
  • Definition: Concentration of nitrogen as nitrate plus nitrite. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NO3_UG_G_DRY_SED
  • Label: Normalized nitrate concentration
  • Definition: Normalized mass of nitrogen as nitrate plus nitrite per gram of dry sediment. See COMMENTS for details regarding blank cells. ND = not detected, NM = not measured.
  • Type: Physical quantity
  • Unit: microgramsPerGram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
COMMENTS
  • Label: Comments
  • Definition: Comments regarding blank cells.
  • Type: Nominal
  • Missing values: None specified
Source URL: https://mcm.lternet.edu/content/vgdesorp