ALLena: Thaw depth measurements of the active layer in the Lena River Delta region from 1998 to 2022, Northeastern Siberia
Veremeeva, Alexandra; Morgenstern, Anne; Gottschalk, Milena; Jünger, Julia; Laboor, Sebastian; Abakumov, Evgeny; Adrian, Irina; Angelopoulos, Michael; Antonova, Sofia; Boike, Julia; Bornemann, Niko; Cherepanova, Alexandra; Evgrafova, Svetlana; Fedorov-Davydov, Dmitry; Fuchs, Matthias; Grigoriev, Mikhail N; Günther, Frank; Hugelius, Gustaf; Kizyakov, Alexander; Kut, Anna; Lashchinskiy, Nikolay; Lupachev, Alexey; Maksimov, Georgii T; Meyer, Hanno; Miesner, Frederieke; Minke, Merten; Nitzbon, Jan; Opel, Thomas; Overduin, Pier Paul; Ramage, Justine L; Liebner, Susanne; Polyakov, Vyacheslav I; Rivkina, Elizaveta; Runge, Alexandra; Schirrmeister, Lutz; Schwamborn, Georg; Siewert, Matthias Benjamin; Tarbeeva, Anna; Ulrich, Mathias; Wetterich, Sebastian; Zubrzycki, Sebastian; Grosse, Guido
Veremeeva, Alexandra; Morgenstern, Anne; Gottschalk, Milena; Jünger, Julia; Laboor, Sebastian; Abakumov, Evgeny; Adrian, Irina; Angelopoulos, Michael; Antonova, Sofia; Boike, Julia; Bornemann, Niko; Cherepanova, Alexandra; Evgrafova, Svetlana; Fedorov-Davydov, Dmitry; Fuchs, Matthias; Grigoriev, Mikhail N; Günther, Frank; Hugelius, Gustaf; Kizyakov, Alexander; Kut, Anna; Lashchinskiy, Nikolay; Lupachev, Alexey; Maksimov, Georgii T; Meyer, Hanno; Miesner, Frederieke; Minke, Merten; Nitzbon, Jan; Opel, Thomas; Overduin, Pier Paul; Ramage, Justine L; Liebner, Susanne; Polyakov, Vyacheslav I; Rivkina, Elizaveta; Runge, Alexandra; Schirrmeister, Lutz; Schwamborn, Georg; Siewert, Matthias Benjamin; Tarbeeva, Anna; Ulrich, Mathias; Wetterich, Sebastian; Zubrzycki, Sebastian; Grosse, Guido (2025): ALLena: Thaw depth measurements of the active layer in the Lena River Delta region from 1998 to 2022, Northeastern Siberia [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.973813,
In: Veremeeva, A et al. (2025): ALLena: Compilation of thaw depth measurements of the active layer in the Lena River Delta region from 1998 to 2022, Northeastern Siberia [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.974408

Event: KU-T1-01
CAMPAIGN: RU-Land_2013_Lena (Lena2013)
BASIS: AWI Arctic Land Expedition
METHOD/DEVICE: Multiple investigations (MULT)

Event: KU-T1-02
CAMPAIGN: RU-Land_2013_Lena (Lena2013)
BASIS: AWI Arctic Land Expedition
METHOD/DEVICE: Multiple investigations (MULT)

Event: KU-T1-05
CAMPAIGN: RU-Land_2013_Lena (Lena2013)
BASIS: AWI Arctic Land Expedition
METHOD/DEVICE: Multiple investigations (MULT)

Event: KU-T4-01b

Event: L16_SF1 (Kur 2)
CAMPAIGN: RU-Land_2016_Lena (Lena2016_spring, Lena2016_summer)
METHOD/DEVICE: Soil profile (SOIL)

Event: L16_SF3 (Kur 4)
CAMPAIGN: RU-Land_2016_Lena (Lena2016_spring, Lena2016_summer)
METHOD/DEVICE: Soil profile (SOIL)

Event: L16_SF4 (Kur 5)
CAMPAIGN: RU-Land_2016_Lena (Lena2016_spring, Lena2016_summer)
METHOD/DEVICE: Soil profile (SOIL)

Event: L16_TM1 (Kur 7)

Event: L16_TM2 (Kur 9)

CAMPAIGN: RU-Land_2019_Lena (Lena 2019)
COMMENT: "Thermokarst mound; Partly covered by pioneering vegetation"

CAMPAIGN: RU-Land_2019_Lena (Lena 2019)
COMMENT: "Slump floor; Freshly eroded material; Water saturated"

Event: L19_TM1 (Kur 7)
CAMPAIGN: RU-Land_2019_Lena (Lena 2019)
COMMENT: "Slump floor; Flooded after rainfalls"

COMMENT: "Thermokarst mound; Thaw depth > 1 m"

Event: LD02-BS-1
ELEVATION: 12.0 m
Recovery 1 m
LOCATION: Samoylov Island, Lena Delta, Siberia
CAMPAIGN: RU-Land_2002_Lena (Lena2002, Laptev_Sea_2002)
METHOD/DEVICE: Hand push corer (HSR)
COMMENT: relief situation: 1. main delta terrace, summit of elevated polygon rim; substrate: fluviatile (+aeolian) stratified sands and loams, peat layers

Event: LD02-BS-2
ELEVATION: 11.8 m
Recovery 0.5 m
LOCATION: Samoylov Island, Lena Delta, Siberia
CAMPAIGN: RU-Land_2002_Lena (Lena2002, Laptev_Sea_2002)
METHOD/DEVICE: Hand push corer (HSR)
COMMENT: relief situation: 1. main delta terrace, slope of elevated polygon rim; substrate: shallow moss and sedge peat above fluviatile stratified sands and loams, peat layers

Event: LD02-BS-3
ELEVATION: 11.5 m
Recovery 0.5 m
LOCATION: Samoylov Island, Lena Delta, Siberia
CAMPAIGN: RU-Land_2002_Lena (Lena2002, Laptev_Sea_2002)
METHOD/DEVICE: Hand push corer (HSR)
COMMENT: relief situation: 1. main delta terrace, depressed centre of polygon; substrate: moss and sedge peat above fluviatile sands

Recovery 0.5 m
COMMENT: relief situation: 1. main delta terrace, summit of elevated polygon rim; substrate: fluviatile loams

COMMENT: relief situation: 1. main delta terrace, depressed centre of polygon; substrate: moss and sedge peat above fluviatile loams

Event: LD98_t1
CAMPAIGN: RU-Land_1998_Lena (Lena-Delta1998)
METHOD/DEVICE: Sampling permafrost (PERM)

Event: LD98_t2a
CAMPAIGN: RU-Land_1998_Lena (Lena-Delta1998)
METHOD/DEVICE: Sampling permafrost (PERM)

Event: LD98_t2b
CAMPAIGN: RU-Land_1998_Lena (Lena-Delta1998)
METHOD/DEVICE: Sampling permafrost (PERM)

Event: LD98_t3

Event: LD98_t3/2

Event: LD98_t4a

Event: LD98_t4b

Event: LD98_t4c

Event: LD98_t5a

Event: LD98_t5b

Event: LD98_t6c

Event: LD98_t8c

Event: LD98_t12

Event: LD98_v1

Event: LD98_v2a

Event: LD98_v2b

Event: LD98_v3a

Event: LD98_v3b

Event: LD98_v4a

Event: LD98_v4b

Event: LD98_v5

Event: LD98_v6

Event: LD98_w1

Event: LD98_w2

Event: LD98_w3

Event: LD98_w7a

Event: LD98_w7b

Event: Lena_TD_Arga_1998
LOCATION: Arga-Muora-Sise Island / Nikolay Lake
METHOD/DEVICE: Metal probe (MPROBE)

Event: Lena_TD_Arga_2001
LOCATION: Arga-Muora-Sise Island
METHOD/DEVICE: Caliper/tape measure (C/T measure)
COMMENT: measurement tape in soil pit

Start of Event: Lena_TD_Arga_2001
LOCATION: Arga-Muora-Sise Island
METHOD/DEVICE: Caliper/tape measure (C/T measure)
COMMENT: measurement tape in soil pit

Event: Lena_TD_Arga_2005
LOCATION: Arga-Bilir-Aryta Island
METHOD/DEVICE: Caliper/tape measure (C/T measure)
COMMENT: measurement tape at outcrop

LOCATION: Arga-Bilir-Aryta Island
COMMENT: measurement tape in soil pit

Start of Event: Lena_TD_Arga_2016
LOCATION: Arga-Bilir-Aryta Island

Event: Lena_TD_Bot_2021
LOCATION: Botulu Sise

Event: Lena_TD_Byk_1998
LOCATION: Bykovsky Peninsula
COMMENT: measurement tape at outcrop and on core

Start of Event: Lena_TD_Byk_1998
LOCATION: Bykovsky Peninsula
COMMENT: measurement tape at outcrop and on core

Event: Lena_TD_Byk_2002
LOCATION: Bykovsky Peninsula
METHOD/DEVICE: Metal probe (MPROBE)

Start of Event: Lena_TD_Byk_2002
METHOD/DEVICE: Metal probe (MPROBE)

Event: Lena_TD_Byk_2008
CAMPAIGN: Beringia_2008
BASIS: Sampling on land

CAMPAIGN: Beringia_2009
BASIS: Sampling on land

CAMPAIGN: Beringia_2010
BASIS: Sampling on land

Event: Lena_TD_Byk_2015_1
CAMPAIGN: RU-Land_2015_Lena (Sobo Sise 2015)

Start of Event: Lena_TD_Byk_2015_1
CAMPAIGN: RU-Land_2015_Lena (Sobo Sise 2015)

Event: Lena_TD_Byk_2015_2
CAMPAIGN: RU-Land_2015_Lena (Sobo Sise 2015)

Start of Event: Lena_TD_Byk_2015_2

Event: Lena_TD_Byk_2015_3

Start of Event: Lena_TD_Byk_2015_3

COMMENT: measurement tape in soil pit, metal probe

Start of Event: Lena_TD_Byk_2018
COMMENT: measurement tape in soil pit, metal probe

Event: Lena_TD_channel_2020
LOCATION: Lena Delta channels

Start of Event: Lena_TD_channel_2020
LOCATION: Lena Delta channels

Event: Lena_TD_Chay_2021
LOCATION: Chay-Ary Island

Start of Event: Lena_TD_Chay_2021
LOCATION: Chay-Ary Island

Event: Lena_TD_Gog_2005
LOCATION: Gogolevskiy-Aryta Island
COMMENT: measurement tape at outcrop

Event: Lena_TD_Khar_2005
LOCATION: Khardang-Sise Island

Start of Event: Lena_TD_Khar_2005
LOCATION: Khardang-Sise Island

Event: Lena_TD_Khar_2010
LOCATION: Khardang-Sise Island

Start of Event: Lena_TD_Khar_2010

Event: Lena_TD_Khar_2018
LOCATION: mainland, Kharaulakh Ridge

Event: Lena_TD_Kho_2018
LOCATION: Khongordokh-Ary Island

Start of Event: Lena_TD_Kho_2018
LOCATION: Khongordokh-Ary Island

Event: Lena_TD_Khor_2002
LOCATION: Khorogor Valley

Start of Event: Lena_TD_Khor_2002
LOCATION: Khorogor Valley

Event: Lena_TD_Kur_2001
LOCATION: Kurungnakh-Sise Island

Start of Event: Lena_TD_Kur_2001
LOCATION: Kurungnakh-Sise Island

Event: Lena_TD_Kur_2002_1
LOCATION: Kurungnakh-Sise Island
COMMENT: measurement tape on core

Start of Event: Lena_TD_Kur_2002_1
COMMENT: measurement tape on core

Event: Lena_TD_Kur_2002_2
COMMENT: measurement tape at outcrop

Event: Lena_TD_Kur_2005_1

Event: Lena_TD_Kur_2007

Start of Event: Lena_TD_Kur_2007

Start of Event: Lena_TD_Kur_2008_1

Start of Event: Lena_TD_Kur_2008_2

Event: Lena_TD_Kur_2009

Start of Event: Lena_TD_Kur_2009

Event: Lena_TD_Kur_2013_1a

Start of Event: Lena_TD_Kur_2013_1a

Event: Lena_TD_Kur_2013_1b

Start of Event: Lena_TD_Kur_2013_1b

Event: Lena_TD_Kur_2013_3a

Start of Event: Lena_TD_Kur_2013_3a

Event: Lena_TD_Kur_2013_3b

Start of Event: Lena_TD_Kur_2013_3b

COMMENT: measurement tape in soil pit / metal probe

Event: Lena_TD_Kyu_2005_1
LOCATION: Kyuryuelyakh-Sis Island

Start of Event: Lena_TD_Kyu_2005_1
LOCATION: Kyuryuelyakh-Sis Island

Event: Lena_TD_Kyu_2005_2
LOCATION: Kyuryuelyakh-Sis Island

Start of Event: Lena_TD_Kyu_2005_2

Event: Lena_TD_mainland_2014
LOCATION: mainland, left bank of the Lena River
CAMPAIGN: Speleoexpedition_2014

Start of Event: Lena_TD_mainland_2014
LOCATION: mainland, left bank of the Lena River
CAMPAIGN: Speleoexpedition_2014

Event: Lena_TD_mainland_2019
LOCATION: mainland, Kharaulakh Ridge

Start of Event: Lena_TD_mainland_2019
LOCATION: mainland, Kharaulakh Ridge

Event: Lena_TD_Mat_2021
LOCATION: Matvey Tyobyulege Island

Event: Lena_TD_Muos_2002
LOCATION: Muostakh Island

Event: Lena_TD_Muos_2012_1
LOCATION: Muostakh Island

Start of Event: Lena_TD_Muos_2012_1
LOCATION: Muostakh Island

Event: Lena_TD_Muos_2012_2

Start of Event: Lena_TD_Muos_2012_2

Event: Lena_TD_Sam_1998_1
LOCATION: Samoylov Island (Dzhiyelyakh-Aryta Island)

Start of Event: Lena_TD_Sam_1998_1
LOCATION: Samoylov Island (Dzhiyelyakh-Aryta Island)

Event: Lena_TD_Sam_1998_2
LOCATION: Samoylov Island (Dzhiyelyakh-Aryta Island)

Start of Event: Lena_TD_Sam_1998_2

Event: Lena_TD_Sam_1998_3

Start of Event: Lena_TD_Sam_1998_3

Event: Lena_TD_Sam_2000

Event: Lena_TD_Sam_2002_grid

Start of Event: Lena_TD_Sam_2002_grid

Event: Lena_TD_Sam_2006

Start of Event: Lena_TD_Sam_2006

Event: Lena_TD_Sam_2009

Start of Event: Lena_TD_Sam_2019

Start of Event: Lena_TD_Sam_2020

Event: Lena_TD_Sard_1998
LOCATION: Sardakh-Sise Island

Event: Lena_TD_Sard_2001
LOCATION: Sardakh-Sise Island

Event: Lena_TD_Sard_2017
LOCATION: Sardakh-Sise Island

Start of Event: Lena_TD_Sard_2019

Event: Lena_TD_Sasyl_2005
LOCATION: Sasyl-Ary Island

Event: Lena_TD_Sasyl_2021
LOCATION: Sasyl-Ary Island

Start of Event: Lena_TD_Sasyl_2021
LOCATION: Sasyl-Ary Island

Event: Lena_TD_Sobo_2014
LOCATION: Sobo-Sise Island
CAMPAIGN: RU-Land_2014_Lena

Start of Event: Lena_TD_Sobo_2014
LOCATION: Sobo-Sise Island
CAMPAIGN: RU-Land_2014_Lena

Event: Lena_TD_Sobo_2015_1
LOCATION: Sobo-Sise Island

Start of Event: Lena_TD_Sobo_2015_1

Event: Lena_TD_Sobo_2015_2

Start of Event: Lena_TD_Sobo_2015_2

Event: Lena_TD_Sobo_2015_3

Start of Event: Lena_TD_Sobo_2015_3

Event: Lena_TD_Sobo_2018
CAMPAIGN: RU-Land_2018_Lena_Sobo-Sise (Sobo-Sise 2018)

Start of Event: Lena_TD_Sobo_2018
CAMPAIGN: RU-Land_2018_Lena_Sobo-Sise (Sobo-Sise 2018)

Event: Lena_TD_SubKur_2013

Start of Event: Lena_TD_SubKur_2013

Event: Lena_TD_SubKur_2014
CAMPAIGN: RU-Land_2014_Lena

Start of Event: Lena_TD_SubKur_2014

Event: Lena_TD_SubKur_2015

Start of Event: Lena_TD_SubKur_2015

Event: Lena_TD_SubSam_2014

Start of Event: Lena_TD_SubSam_2014

Event: Lena_TD_SubSam_2018

Start of Event: Lena_TD_SubSam_2018

Event: Lena_TD_SubSam_2019

Start of Event: Lena_TD_SubSam_2019

Event: Lena_TD_Tiksi_2002
LOCATION: Neelov Bay

Event: Lena_TD_Tiksi_2013
LOCATION: Tiksi
COMMENT: measurement tape in soil pit and on core

Start of Event: Lena_TD_Tiksi_2013
LOCATION: Tiksi
COMMENT: measurement tape in soil pit and on core

Event: Lena_TD_Tiksi_2020
LOCATION: Tiksi
COMMENT: measurement tape at outcrop, metal probe

Start of Event: Lena_TD_Tiksi_2020
COMMENT: measurement tape at outcrop, metal probe

Start of Event: Lena_TD_Tiksi_2021

Event: Lena_TD_TitAry_2016
LOCATION: Tit-Ary Island

Event: Lena_TD_Tumat_2005
LOCATION: Tumatskaya Channel

Event: Lena_TD_Tur_2005_1
LOCATION: Turakh-Sise Island

Start of Event: Lena_TD_Tur_2005_1
LOCATION: Turakh-Sise Island

Event: Lena_TD_Tur_2005_2
LOCATION: Turakh-Sise Island

Start of Event: Lena_TD_Tur_2005_2

Event: Lena-2015
LOCATION: Lena Delta
COMMENT: Coordinates are median values.

Event: Lena-2019_1 (Pond_1)
Lake water depth 0.65158
LOCATION: Lena Delta

Event: Lena-2019_2 (Pond_2)
Lake water depth 1.10258
LOCATION: Lena Delta

Event: Lena-2019_3 (Pond_3)
Lake water depth 0.58508

Event: LenaDelta_microsite

Event: LF-T1-01

Event: LF-T1-02

Event: LF-T1-03

Event: LF-T1-09b

Event: LF-T2-01b

Event: LF-T4-07b

Event: LF-T4-07c

Event: PG-BYK14-T2-1
CAMPAIGN: RU-Land_2014_Lena_Sobo-Byk (Lena_Delta_Sobo-Byk_2014)
METHOD/DEVICE: Soil pit (SPIT)
COMMENT: Recovery = Active layer depth

Event: PG-BYK14-T2-1B
CAMPAIGN: RU-Land_2014_Lena_Sobo-Byk (Lena_Delta_Sobo-Byk_2014)
METHOD/DEVICE: Soil pit (SPIT)
COMMENT: Recovery = Active layer depth

Event: PG-BYK14-T2-2
CAMPAIGN: RU-Land_2014_Lena_Sobo-Byk (Lena_Delta_Sobo-Byk_2014)
METHOD/DEVICE: SIPRE corer (SIPREC)

Event: PG-BYK14-T2-3
METHOD/DEVICE: SIPRE corer (SIPREC)

METHOD/DEVICE: SIPRE corer (SIPREC)

Recovery 1 m

Event: PG-BYK14-T3-2B
LOCATION: Sobo Sise Island, Lena Delta
METHOD/DEVICE: Soil pit (SPIT)

Event: PG-BYK14-T3-6B

Event: PG-SOB14-P-02

Event: PG-SOB14-T1-1

Event: PG-SOB14-T1-2

Event: PG-SOB14-T1-3

Recovery 2 m

Event: PG-SOB14-T2-1B

Event: Samoylov_Island_S1

Event: Samoylov_Island_S2