Permafrost soil database with information on site, topography, geomorphology, hydrology, soil stratigraphy, soil carbon, ground ice isotopes, and vegetation at thermokarst features near Toolik and Noatak River, 2009-2013
Variables
Project
- Label: Project
- Definition: Project that did the sampling
- Type: Nominal
- Missing values: None specified
SiteID
- Label: SiteID
- Definition: Unique ID for site/plot and pedon
- Type: Nominal
- Missing values: None specified
SiteLayerID
- Label: SiteLayerID
- Definition: Unique ID for site/plot and soil horizon using topdeth of layer, some Horizons may need to be split for sampleID linkage
- Type: Nominal
- Missing values: None specified
Observers
- Label: Observers
- Definition: Names of soil describers
- Type: Nominal
- Missing values: None specified
Date
- Label: Date
- Definition: Date of soil description
- Type: Date/time
- Date format: mm/dd/yyyy
- Missing values: None specified
DepthTop
- Label: DepthTop
- Definition: Depth to top of horizon (cm)
- Type: Physical quantity
- Unit: centimeter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
DepthBot
- Label: DepthBot
- Definition: Depth to bottom of horizon (cm)
- Type: Physical quantity
- Unit: centimeter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
DepthMid
- Label: DepthMid
- Definition: Calculated field: (DepthTop + DepthBot)/2
- Type: Physical quantity
- Unit: centimeter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
Thickness
- Label: Thickness
- Definition: Calculated field: Bottom Depth minus Top Depth
- Type: Physical quantity
- Unit: centimeter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
DepthIncr
- Label: DepthIncr
- Definition: 0-100, 100-200, 200+
- Type: Nominal
- Missing values: None specified
LayerNum
- Label: LayerNum
- Definition: Sequential number for each layer/horizon within the soil profile as originally described
- Type: Physical quantity
- Unit: number
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
GeomStratUnit
- Label: GeomStratUnit
- Definition: Geomorphic stratigraphic unit based on modified Kreig and Reger, see reference table. for the code information see REF_Geomorphic Unitstalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Lithofacies
- Label: Lithofacies
- Definition: Lithofacies code that differentiates soil texture and bedding structure together. for the code information see REF_Soil_Lithofaciestalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
HOrizOn
- Label: HOrizOn
- Definition: NRCS horizon designation. for the code information see REF_Soil_Horizon, REF_Soil_Horizon_Suffixtalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Boundary
- Label: Boundary
- Definition: NRCS codes for boundary distinctness and topography. for the code information see REF_Soil_Boundary_Distinct, REF_Soil_Boundary_Topotalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Texture_crs+fn
- Label: Texture_crs+fn
- Definition: Original field desription with crse texture, fine texture, and secondary textures. for the code information see REF_Soil_Texturetalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Texture_scnd
- Label: Texture_scnd
- Definition: Secondary texture of inclusion. for the code information see REF_Soil_Texturetalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Text-USC
- Label: Text-USC
- Definition: United Soil Classification
- Type: Nominal
- Missing values: None specified
TextAggr1
- Label: TextAggr1
- Definition: Aggregation 1 of soil textures
- Type: Nominal
- Missing values: None specified
TextAggr2
- Label: TextAggr2
- Definition: Aggregation 2 of soil textures
- Type: Nominal
- Missing values: None specified
HrznTextAggr1
- Label: HrznTextAggr1
- Definition: Aggregation of Horizon, text_aggr, and peat type
- Type: Nominal
- Missing values: None specified
PeatType
- Label: PeatType
- Definition: classification of peat types, see reference table. for the code information see REF_Soil_Peat_Typestalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
FragPct
- Label: FragPct
- Definition: Percent volume occupied by fragments > 2 mm
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
FragSize-mm
- Label: FragSize-mm
- Definition: maximum size in mm
- Type: Physical quantity
- Unit: millimeter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
FragShape
- Label: FragShape
- Definition: categorical shape of fragments. for the code information see REF_Soil_Frag_Shapetalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Color_Matrix
- Label: Color_Matrix
- Definition: value, chroma and hue. for the code information see REF_soil_colourtalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Color_Mottle
- Label: Color_Mottle
- Definition: value, chroma and hue
- Type: Nominal
- Missing values: None specified
Mottle-ACS
- Label: Mottle-ACS
- Definition: NRCS mottle codes, combine abundance, grade, size. for the code information see REF_Soil_Mottle_Abund, REF_Soil_Mottle_Contrst, REF_Soil_Mottle_Sizetalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Redox_kind
- Label: Redox_kind
- Definition: NRCS redox class, modified. for the code information see REF_Soil_Redox_Typetalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Structure-TGS
- Label: Structure-TGS
- Definition: NRCS structure type, size, and grade, see reference tables. for the code information see REF_Soil_Sticki, REF_Soil_Structure_Grade, REF_Soil_Structure_Sizetalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Rupture_Resist
- Label: Rupture_Resist
- Definition: NRCS codes, see reference table. for the code information see REF_Soil_Redox_Typetalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
Plasticity
- Label: Plasticity
- Definition: NRCS codes, see reference table
- Type: Nominal
- Missing values: None specified
Stickiness
- Label: Stickiness
- Definition: NRCS codes, see reference table. for the code information see REF_Soil_Stickitalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
FrostType
- Label: FrostType
- Definition: Genesis of permafrost types, see reference table. for the code information see REF_Soil_Frost_Typetalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
IceVisible(%)
- Label: IceVisible(%)
- Definition: Percent visible ice, estimated
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
IceStructPrim
- Label: IceStructPrim
- Definition: See ice classification, includes primary, secondary, and tertiary properties. for the code information see Ref_Soil_Ice_Structuretalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
IceStructSec
- Label: IceStructSec
- Definition: See ice classification, includes primary, secondary, and tertiary properties. for the code information see Ref_Soil_Ice_Structuretalbe in 2009-2011_MTJ_Thermokarst_Permafrost_Soil_Database.mdb
- Type: Nominal
- Missing values: None specified
IceLens_Size
- Label: IceLens_Size
- Definition: maximum lens size in mm
- Type: Physical quantity
- Unit: millimeter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
Frozen_Status
- Label: Frozen_Status
- Definition: F or U
- Type: Nominal
- Missing values: None specified
SampleID-Phys
- Label: SampleID-Phys
- Definition: D for lab sample data for moisture, bulk density
- Type: Nominal
- Missing values: None specified
SampleID-Chem
- Label: SampleID-Chem
- Definition: ID for lab sample for chemistry data such as carbon, nutrients
- Type: Nominal
- Missing values: None specified
SampleID-O18
- Label: SampleID-O18
- Definition: ID for lab sample for O18/H
- Type: Nominal
- Missing values: None specified
SampleID-C14
- Label: SampleID-C14
- Definition: ID for lab sample for radiocarbon dating
- Type: Nominal
- Missing values: None specified
Layer_obs
- Label: Layer_obs
- Definition: Type of sampling: Measured, Duplicate-Split (for layers that are split and duplicated across 100 and 200 cm boundaries), extend-short (<50 cm) to get to full meter increment, extend-long (>50 cm) to get to full meter increment
- Type: Nominal
- Missing values: None specified
Sample_obs
- Label: Sample_obs
- Definition: Type of sample measurement: Measured, Duplicate-split, Substitute (sample is lacking but value substituted from similar layer), Mean-Estimate (value estimated from mean for similar conditions)
- Type: Nominal
- Missing values: None specified
Dens-Strat-gcc
- Label: Dens-Strat-gcc
- Definition: Derived from qry_soil-strat-Phys-chem after sample substitution, not adjusted for crs Frag_pct
- Type: Physical quantity
- Unit: gramPerCentimeterCubed
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
Moist-Strat-vol%
- Label: Moist-Strat-vol%
- Definition: Derived from qry_soil-strat-Phys-chem after sample substitution, adjusted for crs Frag_pct
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
TC-strat-%
- Label: TC-strat-%
- Definition: Derived from qry_soil-strat-Phys-chem after sample substitution, adjusted for crs Frag_pct
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
TN-strat-%
- Label: TN-strat-%
- Definition: Derived from qry_soil-strat-Phys-chem after sample substitution, adjusted for crs Frag_pct
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
OC-strat-%
- Label: OC-strat-%
- Definition: Derived from qry_soil-strat-Phys-chem after sample substitution, adjusted for crs Frag_pct
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
OC-Dens-strat-gcc
- Label: OC-Dens-strat-gcc
- Definition: Organic Carbon Density: Carbon density calculated from measured and substituted data, gm/cc
- Type: Physical quantity
- Unit: gramPerCentimeterCubed
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
OC-Stock-strat-kgm2
- Label: OC-Stock-strat-kgm2
- Definition: OC-stock calculated for layer, see calculation query, kg/m2
- Type: Physical quantity
- Unit: kilogramPerMeterSquared
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
TC-Dens-Strat-gcc
- Label: TC-Dens-Strat-gcc
- Definition: Total Carbon Density: Carbon density calculated from measured and substituted data, gm/cc
- Type: Physical quantity
- Unit: gramPerCentimeterCubed
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
TC_Store-strat-kgm2
- Label: TC_Store-strat-kgm2
- Definition: Total carbon-stock calculated for layer, see calculation query, kg/m2
- Type: Physical quantity
- Unit: kilogramPerMeterSquared
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
Water_Store-m
- Label: Water_Store-m
- Definition: Depth of water equivalent (m of water equivalent per depth of layer), using crsFrag adjusted moisture
- Type: Physical quantity
- Unit: meter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
EcoHistory
- Label: EcoHistory
- Definition: Ecotype or environment that soil was formed
- Type: Nominal
- Missing values: None specified
Notes_fld
- Label: Notes_fld
- Definition: Original field notes on layer descriptions
- Type: Nominal
- Missing values: None specified
Notes_Off
- Label: Notes_Off
- Definition: Office notes on data problems and changes
- Type: Nominal
- Missing values: None specified