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Baisheva, Izabella; Pestryakova, Luidmila A; Ushnitskaya, Lena A; Davydova, Paraskovya V; Levina, Sardana N; Egorov, Aital; Syrovatsky, Igor; Zakharov, Evgenii S; Gorodnichev, Ruslan; Glückler, Ramesh; Stieg, Amelie; Eder, Iris; Kahl, Jan; Meister, Philip; Wieczorek, Mareike; Eulenburg, Antje; Stoof-Leichsenring, Kathleen Rosmarie; Biskaborn, Boris K; Heim, Birgit; Herzschuh, Ulrike (2022): Summer hydrophysical properties of thermokarst lakes in the Central Yakutian Lowland and mountain lakes in the Verkhoyansk Mountain Range in Eastern Yakutia [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.952355

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Abstract:
This dataset presents the assessment of the lake types and settings together with the data on hydrophysical parameters measurements including Electrical Conductivity, on-site water temperature and pH, except at one lake (EN21426-2) of which electrical conductivity was measured in the Hydrochemical Laboratory of AWI). Lakes were surveyed between 6 August and 2 September 2021. A total of 66 lakes in Central and Eastern Yakutia were assessed as part of the joint Russian-German expedition (NEFU-AWI; RU-Land_2021_Yakutia). Of those 66 lakes, 15 are from mountain lakes located within the Verkhoyansk mountain range, at the eastern end of the expedition route, including mostly intermontane basin or glacial lakes (average elevation: c. 1080 m a.s.l.). 13 lakes were sampled in Oymyakonsky District and two lakes in Tomponsky District. The hydrochemical dataset from the other 52 lakes that lie within the eastern extent of the Central Yakutian Lowland (average elevation: c. 190 m a.s.l.) represents thermokarst lakes. Thermokarst lakes originate from thawing of ice-rich permafrost and were found in different stages of their development, with a wide range of anthropogenic impact. These 52 thermokarst lakes include seven lakes within the Churapchinsky District, two are located in the Tattinsky District further east within a freshly burned forest. 42 lakes are located in Megino-Kangalassky District, of which 17 lakes are around Tungulu, and 24 lakes around Maya settlements.
Keyword(s):
Alaas lake; Alas; Central Yakutia; Central Yakutian Lowland; Dyede; Eastern Yakutia; Electrical conductivity; Field measurements; glacial lakes; hydrophysical properties; lakes; pH; Siberia; Siberian permafrost; thermokarst lake; Tyympy; Verkhoyansk Mountain Range
Funding:
European Research Council (ERC), grant/award no. 772852: Glacial Legacy on the establishment of evergreen vs. summergreen boreal forests
German Academic Exchange Service (DAAD), grant/award no. 91775743
Ministry of Education and Science of the Russian Federation, grant/award no. FSRG-2020-0019: FSRG-2020-0019
Russian Foundation for Basic Research, grant/award no. 20-35-90081
Coverage:
Median Latitude: 62.294054 * Median Longitude: 133.222778 * South-bound Latitude: 61.717450 * West-bound Longitude: 130.253300 * North-bound Latitude: 63.438860 * East-bound Longitude: 142.957330
Date/Time Start: 2021-08-08T00:00:00 * Date/Time End: 2021-09-02T00:00:00
Minimum Elevation: 114.6 m * Maximum Elevation: 1309.7 m
Event(s):
EN21401 * Latitude: 63.336640 * Longitude: 141.056960 * Date/Time: 2021-08-14T00:00:00 * Elevation: 946.0 m * Lake water depth: 43.0 m * Location: Oymyakonsky District * Campaign: RU-Land_2021_Yakutia * Basis: AWI Arctic Land Expedition * Method/Device: Sampling lake (LAKE)
EN21402 * Latitude: 63.326960 * Longitude: 141.084340 * Date/Time: 2021-08-08T00:00:00 * Elevation: 989.4 m * Lake water depth: 12.6 m * Location: Oymyakonsky District * Campaign: RU-Land_2021_Yakutia * Basis: AWI Arctic Land Expedition * Method/Device: Sampling lake (LAKE)
EN21403 * Latitude: 63.320120 * Longitude: 141.079930 * Date/Time: 2021-08-08T00:00:00 * Elevation: 1036.0 m * Lake water depth: 14.1 m * Location: Oymyakonsky District * Campaign: RU-Land_2021_Yakutia * Basis: AWI Arctic Land Expedition * Method/Device: Sampling lake (LAKE)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventBaisheva, Izabella
2DATE/TIMEDate/TimeBaisheva, IzabellaGeocode
3Longitude of eventLongitudeBaisheva, Izabella
4Latitude of eventLatitudeBaisheva, Izabella
5ELEVATIONElevationm a.s.l.Baisheva, IzabellaGeocode
6CampaignCampaignBaisheva, Izabella
7CountryCountryBaisheva, Izabella
8LocationLocationBaisheva, Izabella
9LakeLakeBaisheva, Izabella
10BiomeBiomeBaisheva, Izabella
11LandformLandformBaisheva, Izabella
12TerrainTerrainBaisheva, IzabellaSetting of landscape
13Lake typeLake typeBaisheva, Izabella
14DEPTH, waterDepth watermBaisheva, IzabellaGeocode – Sampling depth]
15DEPTH, waterDepth watermBaisheva, IzabellaGeocode – Lake depth
16Depth of Secchi Diskz(SD)mBaisheva, IzabellaSecchi disc
17Temperature, waterTemp°CBaisheva, IzabellaWTW Multi Set 350i multiparameter probe
18pHpHBaisheva, IzabellaWTW Multi Set 350i multiparameter probe
19Conductivity, electricalCond electrµS/cmBaisheva, IzabellaWTW Multi Set 350i multiparameter probe
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
689 data points

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