Ground subsidence and polygon development due to thermokarst in the Lena-Aldan interfluve, eastern Siberia, revealed by satellite remote sensing data ...

• Main Authors: Abe, Takahiro, Iijima, Yoshihiro
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: figshare 2024
• Subjects: Medicine; Environmental Sciences not elsewhere classified; Ecology; FOS Biological sciences; Developmental Biology; Inorganic Chemistry; FOS Chemical sciences; Aldan; Churapcha; Tyungyulyu; Mayya; Ice; permafrost; Thermokarst; Yakutia; Siberia
• Online Access: https://dx.doi.org/10.6084/m9.figshare.c.7068626.v1; https://springernature.figshare.com/collections/Ground_subsidence_and_polygon_development_due_to_thermokarst_in_the_Lena-Aldan_interfluve_eastern_Siberia_revealed_by_satellite_remote_sensing_data/7068626/1

Abstract Thermokarst development is a topographic change in the landscape that is commonly associated with permafrost degradation in ice-rich permafrost regions. The Lena-Aldan interfluvial area in Central Yakutia in eastern Siberia has undergone extensive thermokarst development in the last three decades, particularly in the vicinity of settlements. Despite the negative effects of thermokarst development on the inhabitants of these settlements, no quantitative observation methods have been developed to investigate the surface displacement due to thermokarst development over entire towns. This study utilized interferometric synthetic aperture radar to reveal ground-surface displacement associated with thermokarst near the settlements of selected towns. The findings showed that significant subsidence was detected in disturbed areas (farming and abundant arable land) near the towns. The magnitude of subsidence in the Tyungyulyu and Mayya areas was less than that in Churapcha and Amga. Polygon density in a ...