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Data
»
Hyporheic sediment characteristics from Von Guerard Stream, Taylor Valley, McMurdo Dry Valleys, Antarctica in January 2019
HZSEDS_CHEM
Hyporheic zone sediment chemistry
File:
HZSEDS_CHEM_1.csv
(4.84 KB)
...
or query the dataset by variables and dates of interest:
Variables
DATASET_CODE
Label:
Dataset code
Definition:
Internal dataset code.
Type:
Nominal
Missing values:
None specified
SAMPLE_DATE
Label:
Sample date
Definition:
Date samples were collected.
Type:
Date/time
Date format:
MM/DD/YYYY
Missing values:
None specified
SAMPLE_ID
Label:
Sample identifier
Definition:
Unique sample identifier that contains the geomorphology type, the transect number, and the lateral position.
Type:
Code list
Codes:
M = meander
P = pool
R = riffle
Missing values:
None specified
TRANSECT
Label:
Transect identifier
Definition:
Transect identifier. Transects are numbered from north to south.
Type:
Code list
Codes:
M = meander
P = pool
R = riffle
Missing values:
None specified
GEOMORPH
Label:
Geomorphic classification
Definition:
Geomorphic classification type of the sample/transect location.
Type:
Nominal
Missing values:
None specified
LATERAL_POSITION
Label:
Lateral position
Definition:
Lateral position of the sample across the transect.
Type:
Code list
Codes:
1 = margin of the wetted zone (inside bank for meanders)
2 = intermediate
3 = stream thalweg
4 = intermediate
5 = margin of the wetted zone (outside bank for meanders)
Missing values:
None specified
DISTANCE
Label:
Distance from thalweg
Definition:
Absolute distance from the center of the stream channel.
Type:
Physical quantity
Unit:
meter
Maximum:
Not specified
Minimum:
Not specified
Precision:
Not specified
Missing values:
None specified
LOI
Label:
Loss on ignition
Definition:
Percent loss-on-ignition organic matter relative to sediment dry weight.
Type:
Physical quantity
Unit:
percent
Maximum:
Not specified
Minimum:
Not specified
Precision:
Not specified
Missing values:
None specified
CHL_A
Label:
Chlorophyll a
Definition:
Concentration of Chlorophyll a, normalized by sediment dry weight.
Type:
Physical quantity
Unit:
microgramsPerGram
Maximum:
Not specified
Minimum:
Not specified
Precision:
Not specified
Missing values:
None specified
PHAEOPHYTIN
Label:
Phaeophytin
Definition:
Concentration of the degraded phaeopigment normalized by sediment dry weight.
Type:
Physical quantity
Unit:
microgramsPerGram
Maximum:
Not specified
Minimum:
Not specified
Precision:
Not specified
Missing values:
None specified
BIOGENIC_SILICA
Label:
Biogenic silica
Definition:
Percent biogenic silica relative to sediment dry weight.
Type:
Physical quantity
Unit:
percent
Maximum:
Not specified
Minimum:
Not specified
Precision:
Not specified
Missing values:
None specified
SORBED_AMMONIUM
Label:
Sorbed ammonium
Definition:
Concentration of ammonium adsorbed to sediment relative to sediment dry weight, expressed as micrograms of nitrogen per gram of dry weight sediment.
Type:
Physical quantity
Unit:
microgramsPerGram
Maximum:
Not specified
Minimum:
Not specified
Precision:
Not specified
Missing values:
None specified
ABSORBANCE
Label:
Absorbance
Definition:
UV absorbance at 254 nm of the KCl extractions used to measure sorbed ammonium.
Type:
Physical quantity
Unit:
absorbanceUnits
Maximum:
Not specified
Minimum:
Not specified
Precision:
Not specified
Missing values:
None specified
Data Source Details
Header lines:
1
Orientation:
Column
Quote character:
"
Field delimiter:
,