ALLena: Thaw depth measurements of the active layer in the Lena River Delta region from 1998 to 2022, Northeastern Siberia, detailed table 'Detailed_data_TD_Fedorov-Davydov'
type: Dataset
creator: Alexandra Veremeeva
creator: Anne Morgenstern
creator: Milena Gottschalk
  type: Person
  family name: Gottschalk
  given name: Milena
  affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam
creator: Julia Jünger
  type: Person
  family name: Jünger
  given name: Julia
  affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam
creator: Sebastian Laboor
creator: Evgeny Abakumov
creator: Irina Adrian
  type: Person
  family name: Adrian
  given name: Irina
  affiliation: Ust-Lensky State Nature Reserve, Tiksi, Russia
creator: Michael Angelopoulos
creator: Sofia Antonova
creator: Julia Boike
creator: Niko Bornemann
creator: Alexandra Cherepanova
  type: Person
  family name: Cherepanova
  given name: Alexandra
  affiliation: Russian Academy of Sciences
creator: Svetlana Evgrafova
creator: Dmitry Fedorov-Davydov
  type: Person
  family name: Fedorov-Davydov
  given name: Dmitry
  affiliation: Institute of Physicochemical and Biological Problems of Soil Science of the RAS
creator: Matthias Fuchs
creator: Mikhail N Grigoriev
creator: Frank Günther
creator: Gustaf Hugelius
creator: Alexander Kizyakov
creator: Anna Kut
  type: Person
  family name: Kut
  given name: Anna
  affiliation: Russian Academy of Sciences
creator: Nikolay Lashchinskiy
  type: Person
  family name: Lashchinskiy
  given name: Nikolay
  affiliation: Russian Academy of Sciences
creator: Alexey Lupachev
  type: Person
  family name: Lupachev
  given name: Alexey
  affiliation: Russian Academy of Sciences
creator: Hanno Meyer
creator: Frederieke Miesner
creator: Merten Minke
creator: Jan Nitzbon
creator: Thomas Opel
creator: Pier Paul Overduin
creator: Justine L Ramage
creator: Susanne Liebner
creator: Elizaveta Rivkina
creator: Alexandra Runge
creator: Lutz Schirrmeister
creator: Georg Schwamborn
creator: Matthias Benjamin Siewert
creator: Mathias Ulrich
creator: Sebastian Wetterich
creator: Sebastian Zubrzycki
creator: Guido Grosse
date published: 2025-07-01
is part of: https://doi.org/10.1594/PANGAEA.974408
additional type: dataset
description: Active layer thickness (ALT) is one of currently two Essential Climate Variables related directly to permafrost regions as defined by the Global Climate Observing System (GCOS) at the World Meteorological Organization (WMO). ALT is determined as the maximum thaw depth at the end of the thawing season and is being monitored across the Arctic to better understand climate change impacts on landscape, permafrost, hydrology, vegetation, and soil biogeochemistry. In addition, spatially and/or temporally distributed measurements of thaw depth (TD) in the active layer during the thawing period are often recorded during field work in permafrost regions for various research purposes and process understanding. The ALLena dataset presents a compilation of thaw depth (TD) measurements of the active layer in the Lena River Delta region based on published and unpublished field data collected during Russian and joint German-Russian expeditions from 1998 to 2022. The dataset contains data from different areas of the Lena Delta region with clustering in research-intensive areas, e.g. in the vicinity of Research Station Samoylov Island, but also includes sites adjacent to the delta such as Muostakh Island, Bykovsky Peninsula and Tiksi settlement surroundings. The compiled data is distributed across various ecosystems and geomorphological units underlain by different types of deposits and characterized by various relief positions, microtopography, soil and vegetation cover (e.g. active floodplains, polygonal tundra on Holocene Lena Delta terraces, remnants of Yedoma Ice Complex, etc.). TD measurements were conducted as opportunistic single as well as targeted TD transects or grid measurements. For some sites measurements of TD were repeated at the same locations in different years. TD was measured one time per site or several times per site within a few centimeters to several meters to capture small-scale heterogeneity depending on e.g. microcrotopography or vegetation type. The main d…
abstract: Active layer thickness (ALT) is one of currently two Essential Climate Variables related directly to permafrost regions as defined by the Global Climate Observing System (GCOS) at the World Meteorological Organization (WMO). ALT is determined as the maximum thaw depth at the end of the thawing season and is being monitored across the Arctic to better understand climate change impacts on landscape, permafrost, hydrology, vegetation, and soil biogeochemistry. In addition, spatially and/or temporally distributed measurements of thaw depth (TD) in the active layer during the thawing period are often recorded during field work in permafrost regions for various research purposes and process understanding. The ALLena dataset presents a compilation of thaw depth (TD) measurements of the active layer in the Lena River Delta region based on published and unpublished field data collected during Russian and joint German-Russian expeditions from 1998 to 2022. The dataset contains data from different areas of the Lena Delta region with clustering in research-intensive areas, e.g. in the vicinity of Research Station Samoylov Island, but also includes sites adjacent to the delta such as Muostakh Island, Bykovsky Peninsula and Tiksi settlement surroundings. The compiled data is distributed across various ecosystems and geomorphological units underlain by different types of deposits and characterized by various relief positions, microtopography, soil and vegetation cover (e.g. active floodplains, polygonal tundra on Holocene Lena Delta terraces, remnants of Yedoma Ice Complex, etc.). TD measurements were conducted as opportunistic single as well as targeted TD transects or grid measurements. For some sites measurements of TD were repeated at the same locations in different years. TD was measured one time per site or several times per site within a few centimeters to several meters to capture small-scale heterogeneity depending on e.g. microcrotopography or vegetation type. The main d…
citation: Thermokarst Lake to Lagoon Transitions in Eastern Siberia: Do Submerged Taliks Refreeze?
citation: Thaw subsidence of a yedoma landscape in Northern Siberia, measured in situ and estimated from TerraSAR-X interferometry
citation: Russian-German Cooperation: Expeditions to Siberia in 2020
citation: Russian-German Cooperation SYSTEM LAPTEV SEA: The Expedition LENA 2009
citation: Russian-German Cooperation SYSTEM LAPTEV SEA: The Expedition LENA 2006
citation: Russian-German Cooperation SYSTEM LAPTEV SEA: The Expedition LENA - New Siberian Islands 2007 during the International Polar Year 2007/2008
citation: Partitioning net ecosystem exchange of CO2 on the pedon scale in the Lena River Delta, Siberia
citation: Russian-German Cooperation: Expeditions to Siberia in 2019
citation: Carbon and nitrogen pools in thermokarst-affected permafrost landscapes in Arctic Siberia
citation: Ratio of In Situ CO2 to CH4 Production and Its Environmental Controls in Polygonal Tundra Soils of Samoylov Island, Northeastern Siberia
citation: Russian-German Cooperation System Laptev Sea 2000: The Expedition LENA 2002
citation: Observing Muostakh disappear: permafrost thaw subsidence and erosion of a ground-ice-rich island in response to arctic summer warming and sea ice reduction
citation: Carbon Dioxide and Methane Release Following Abrupt Thaw of Pleistocene Permafrost Deposits in Arctic Siberia
citation: Russian-German Cooperation: Expeditions to Siberia in 2018
citation: Approaches for the complex assessment of polychemical pollution of permafrost-affected soils and the upper layer of permafrost
citation: Russian-German Cooperation: Expeditions to Siberia in 2021
citation: Russian-German cooperation system Laptev Sea: The Expedition LENA 2012
citation: Russian-German Cooperation: Expeditions to Siberia in 2016
citation: Russian-German Cooperation System Laptev Sea 2000: The Expedition LENA 2001
citation: Russian-German Cooperation System Laptev Sea 2000: The Lena Delta 1998 Expedition
citation: Russian-German Cooperation System Laptev Sea 2000: The Expedition LENA 1999
citation: Russian-German Cooperation System Laptev Sea 2000: The Expedition LENA 2000
citation: Identifying drivers behind spatial variability of methane concentrations in East Siberian ponds
citation: Expeditions in Siberia in 2005
citation: Landscape controls and vertical variability of soil organic carbon storage in permafrost-affected soils of the Lena River Delta
citation: Russian-German Cooperation: Expeditions to Siberia in 2017
citation: Causes and Processes of Thermo-Erosional Gully Initiation Near Tiksi Settlement, Arctic Eastern Siberia
citation: Spectral characterization of periglacial surfaces and geomorphological units in the Arctic Lena Delta using field spectrometry and remote sensing
citation: Russian-German Cooperation SYSTEM LAPTEV SEA: The Expedition LENA 2008
temporal coverage: 2008-08-30T00:00:00/2022-08-18T00:00:00
funding: International Network for Terrestrial Research and Monitoring in the Arctic - INTERACT III
license: https://creativecommons.org/licenses/by/4.0/
conditions of access: unrestricted
is accessible for free: true
language: en

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affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam
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name: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
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affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Sebastian Laboor
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affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Evgeny Abakumov
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affiliation: St Petersburg University

St Petersburg University
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Michael Angelopoulos
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affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Sofia Antonova
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affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Julia Boike
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affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Niko Bornemann
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affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Russian Academy of Sciences
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alternate name: RAS

Svetlana Evgrafova
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affiliation: Sukachev Institute of Forest SB RAS, Federal Research Center "Krasnoyarsk Science Center SB RAS"

Matthias Fuchs
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family name: Fuchs
given name: Matthias
affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Mikhail N Grigoriev
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given name: Mikhail N
affiliation: Permafrost Institute of the Siberian Division of the Russian Academy of Sciences
  type: Organization
  alternate name: YSN

Frank Günther
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affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Gustaf Hugelius
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Department of Physical Geography, University of Stockholm
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Lomonosov Moscow State University
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Johann Heinrich von Thünen-Institut
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Pier Paul Overduin
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affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Justine L Ramage
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GFZ German Research Center for Geosciences
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Umeå University
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German Federal Environment Agency
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Technische Universität Dresden
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University of Hamburg
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Thermokarst Lake to Lagoon Transitions in Eastern Siberia: Do Submerged Taliks Refreeze?
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Thaw subsidence of a yedoma landscape in Northern Siberia, measured in situ and estimated from TerraSAR-X interferometry
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Russian-German Cooperation SYSTEM LAPTEV SEA: The Expedition LENA - New Siberian Islands 2007 during the International Polar Year 2007/2008
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Partitioning net ecosystem exchange of CO2 on the pedon scale in the Lena River Delta, Siberia
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Russian-German Cooperation: Expeditions to Siberia in 2019
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Carbon and nitrogen pools in thermokarst-affected permafrost landscapes in Arctic Siberia
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Ratio of In Situ CO2 to CH4 Production and Its Environmental Controls in Polygonal Tundra Soils of Samoylov Island, Northeastern Siberia
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Observing Muostakh disappear: permafrost thaw subsidence and erosion of a ground-ice-rich island in response to arctic summer warming and sea ice reduction
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Carbon Dioxide and Methane Release Following Abrupt Thaw of Pleistocene Permafrost Deposits in Arctic Siberia
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Russian-German Cooperation: Expeditions to Siberia in 2018
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Approaches for the complex assessment of polychemical pollution of permafrost-affected soils and the upper layer of permafrost
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Russian-German cooperation system Laptev Sea: The Expedition LENA 2012
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Russian-German Cooperation: Expeditions to Siberia in 2016
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Russian-German Cooperation System Laptev Sea 2000: The Lena Delta 1998 Expedition
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Russian-German Cooperation System Laptev Sea 2000: The Expedition LENA 1999
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Russian-German Cooperation System Laptev Sea 2000: The Expedition LENA 2000
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Identifying drivers behind spatial variability of methane concentrations in East Siberian ponds
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Expeditions in Siberia in 2005
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Landscape controls and vertical variability of soil organic carbon storage in permafrost-affected soils of the Lena River Delta
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Russian-German Cooperation: Expeditions to Siberia in 2017
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Causes and Processes of Thermo-Erosional Gully Initiation Near Tiksi Settlement, Arctic Eastern Siberia
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Spectral characterization of periglacial surfaces and geomorphological units in the Arctic Lena Delta using field spectrometry and remote sensing
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Russian-German Cooperation SYSTEM LAPTEV SEA: The Expedition LENA 2008
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International Network for Terrestrial Research and Monitoring in the Arctic - INTERACT III
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funder: Horizon 2020

Horizon 2020
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alternate name: H2020

Time
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alternate name: T

location
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Length
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number
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Georgii T Maksimov
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Vyacheslav I Polyakov
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PANGAEA
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disambiguating description: Data Publisher for Earth & Environmental Science

PANGAEA
type: DataCatalog
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Place
geo: GeoShape
  box: 71.73875 129.3528611 71.78519444 129.4204167
  elevation: 1.5m/36.5m

QuantitativeValue
value: 2841.0
unit text: data points

Event label
type: PropertyValue
description: Events contain measurements taken at one location (e. g. an island or channel) within the same year and campaign, for a specific scientific purpose, by the same PI and/or measuring person

Data ID
type: PropertyValue
description: Dataset ID, unique identifier for each record in this dataset (running number)

Field ID
type: PropertyValue
description: Field ID, identifier assigned to a measurement by the data author/measuring person during field work

DATE/TIME
type: PropertyValue
subject of: DefinedTermSet
  has defined term: Time

Location
type: PropertyValue
description: general location name of the measurement site (e. g. island or channel)
subject of: DefinedTermSet
  has defined term: location

Positioning type/details
type: PropertyValue
description: specifies how coordinates were obtained: handheld GPS; GNSS; map

LATITUDE
type: PropertyValue
description: latitude of thaw depth measurement.

LONGITUDE
type: PropertyValue
description: longitude of thaw depth measurement.

ELEVATION
type: PropertyValue
unit text: m a.s.l.
description: elevation of measurement site
subject of: DefinedTermSet
  has defined term: elevation
  has defined term: Length

Thaw depth of active layer
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Thaw depth of active layer
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description: No. 7
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description: No. 8
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description: No. 9
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description: No. 10
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description: No. 11
subject of: DefinedTermSet
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Thaw depth of active layer
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unit text: cm
description: No. 12
subject of: DefinedTermSet
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Thaw depth of active layer
type: PropertyValue
unit text: cm
description: No. 13
subject of: DefinedTermSet
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Thaw depth of active layer
type: PropertyValue
unit text: cm
description: No. 14
subject of: DefinedTermSet
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Thaw depth of active layer
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description: No. 15
subject of: DefinedTermSet
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Thaw depth of active layer
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description: No. 16
subject of: DefinedTermSet
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Thaw depth of active layer
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unit text: cm
description: No. 17
subject of: DefinedTermSet
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Thaw depth of active layer
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unit text: cm
description: No. 18
subject of: DefinedTermSet
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Thaw depth of active layer
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unit text: cm
description: No. 19
subject of: DefinedTermSet
  has defined term: Length

Thaw depth of active layer
type: PropertyValue
unit text: cm
description: No. 20
subject of: DefinedTermSet
  has defined term: Length

Thaw depth of active layer, mean
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unit text: cm
description: mean of all thaw depth measurements per site
subject of: DefinedTermSet
  has defined term: mean
  has defined term: Length

Thaw depth of active layer, minimum
type: PropertyValue
unit text: cm
description: minimum of all thaw depth measurements per site. Empty if only 1 measurement was taken
subject of: DefinedTermSet
  has defined term: minimum
  has defined term: Length

Thaw depth of active layer, maximum
type: PropertyValue
unit text: cm
description: maximum of all thaw depth measurements per site. Empty if only 1 measurement was taken
subject of: DefinedTermSet
  has defined term: maximum
  has defined term: Length

Method comment
type: PropertyValue
description: averaged TD yes/no

Number of observations
type: PropertyValue
unit text: #
description: number of thaw depth measurements per site, for which mean, max and min are provided in this row
subject of: DefinedTermSet
  has defined term: number
  has defined term: Abundance or Count

Microtopography
type: PropertyValue
description: description of microtopography characteristics

Publication of data
type: PropertyValue
description: publication status of the thaw depth measurement data: published; unpublished

Data source
type: PropertyValue
description: source of the thaw depth measurement data: data author/measuring person; field report; data publication

Campaign
type: PropertyValue
description: name of the expedition/field campaign during which the thaw depth measurements were taken

Data author(s)
type: PropertyValue
description: person responsible for the thaw depth measurement data

Institution
type: PropertyValue
description: institute of responsible person

Name
type: PropertyValue
description: of person that conducted the thaw depth measurement in the field

Contact person
type: PropertyValue
description: name of contact person

Additional information
type: PropertyValue
description: additional info related to the thaw depth measurement

Measurement type
type: PropertyValue
description: spatial type of measurements: point; transect; grid

Additional information
type: PropertyValue
description: Repeated meas: was another measurement performed at the same location at a different point in time? yes; no

Additional information
type: PropertyValue
description: If "Repeated meas" is "yes", was the repeated measurement performed in the same season or a different year? "seasonal"; "interannual"; "seasonal, interannual"

Additional information
type: PropertyValue
description: If "Repeated meas" is "yes", in which years were measurements taken at this location?

Additional information
type: PropertyValue
description: If "Repeated meas" is "yes", which events do the repeated measurements belong to?

DataDownload
encoding format: text/tab-separated-values

DataDownload
encoding format: text/html