TY - JOUR

T1 - Permafrost Degradation Impact on Water Bodies in the Siberian Tundra (Samoylov and Kurungnakh Islands, Lena Delta) Using GIS Analysis of Remote Sensing Data and a Geochemical Approach

AU - Yurkevich, Nataliya

AU - Kartoziia, Andrei

AU - Tsibizova, Ekaterina

N1 - Funding Information: The research was supported by Basic research projects of Ministry of Science and Higher Education of the Russial Federation FWZZ-2022-0029 and FWZZ-2022-0031. Besides, work is done on state assignment of IGM SB RAS. Publisher Copyright: © 2022 by the authors.

PY - 2022/8

Y1 - 2022/8

N2 - The article presents the geomorphological and geochemical investigation of the water bodies on the Samoylov and Kurunghnakh Islands, the Lena River delta. We used GIS-analyze analysis for identifying water body groups, depending on their geomorphological features. The studied water bodies are located on two principally different surfaces: the first and the third terraces of the Lena Delta. The water bodies occupy thermokarst hollow bottoms, which have various elevations above sea level. We identified the altitudes of the water bodies’ water surfaces by analysing with ArcticDEM. Additionally, we estimated the area of the water bodies by hand after mapping the borders of the water bodies in UAV imageries. We sampled the bottom sediments and water’s chemical composition. All water bodies were divided into groups: (1) small water bodies on the Yedoma upland surface; (2) water bodies in six thermokarst hollows; (3) water bodies on the first terrace. The water bodies bottom sediments on the Yedoma are depleted by the As and enriched by the Zn and Mo in comparison with sediments of other groups. The Rare Earth Elements concentrations in the bottom sediments of Yedoma water bodies and several water bodies on poorly degraded surfaces of the third terrace are lower than in other water bodies, except La.

AB - The article presents the geomorphological and geochemical investigation of the water bodies on the Samoylov and Kurunghnakh Islands, the Lena River delta. We used GIS-analyze analysis for identifying water body groups, depending on their geomorphological features. The studied water bodies are located on two principally different surfaces: the first and the third terraces of the Lena Delta. The water bodies occupy thermokarst hollow bottoms, which have various elevations above sea level. We identified the altitudes of the water bodies’ water surfaces by analysing with ArcticDEM. Additionally, we estimated the area of the water bodies by hand after mapping the borders of the water bodies in UAV imageries. We sampled the bottom sediments and water’s chemical composition. All water bodies were divided into groups: (1) small water bodies on the Yedoma upland surface; (2) water bodies in six thermokarst hollows; (3) water bodies on the first terrace. The water bodies bottom sediments on the Yedoma are depleted by the As and enriched by the Zn and Mo in comparison with sediments of other groups. The Rare Earth Elements concentrations in the bottom sediments of Yedoma water bodies and several water bodies on poorly degraded surfaces of the third terrace are lower than in other water bodies, except La.

KW - bottom sediments

KW - degradation

KW - Lena Delta

KW - metals

KW - mobility

KW - permafrost

KW - remote sensing

KW - thermokarst water bodies

KW - water

UR - http://www.scopus.com/inward/record.url?scp=85136934308&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/eb9ab589-8755-3b46-bf10-6cb526cfafaf/

U2 - 10.3390/w14152322

DO - 10.3390/w14152322

M3 - Article

AN - SCOPUS:85136934308

VL - 14

JO - Water (Switzerland)

JF - Water (Switzerland)

SN - 2073-4441

IS - 15

M1 - 2322

ER -