scholarly journals Characterizing Post-Drainage Succession in Thermokarst Lake Basins on the Seward Peninsula, Alaska with TerraSAR-X Backscatter and Landsat-based NDVI Data

2012 ◽  
Vol 4 (12) ◽  
pp. 3741-3765 ◽  
Author(s):  
Prajna Regmi ◽  
Guido Grosse ◽  
Miriam Jones ◽  
Benjamin Jones ◽  
Katey Anthony
Keyword(s):  
Thermokarst Lake ◽  
Seward Peninsula ◽  
Lake Basins

scholarly journals Peat accumulation in drained thermokarst lake basins in continuous, ice-rich permafrost, northern Seward Peninsula, Alaska

2012 ◽  
Vol 117 (G2) ◽  
pp. n/a-n/a ◽  
Author(s):  
Miriam C. Jones ◽  
Guido Grosse ◽  
Benjamin M. Jones ◽  
Katey Walter Anthony
Keyword(s):  
Peat Accumulation ◽  
Thermokarst Lake ◽  
Seward Peninsula ◽  
Lake Basins

scholarly journals Evidence of multiple thermokarst lake generations from an 11 800-year-old permafrost core on the northern Seward Peninsula, Alaska

Boreas ◽  
2016 ◽  
Vol 45 (4) ◽  
pp. 584-603 ◽  
Author(s):  
Josefine Lenz ◽  
Sebastian Wetterich ◽  
Benjamin M. Jones ◽  
Hanno Meyer ◽  
Anatoly Bobrov ◽  
...  
Keyword(s):  
Thermokarst Lake ◽  
Seward Peninsula

Holocene pore‐ice δ 18 O and δ 2 H records from drained thermokarst lake basins in the Old Crow Flats, Yukon, Canada

2020 ◽  
Vol 31 (4) ◽  
pp. 497-508
Author(s):  
Sasiri Bandara ◽  
Duane Froese ◽  
Trevor J. Porter ◽  
Fabrice Calmels
Keyword(s):  
Thermokarst Lake ◽  
Old Crow Flats ◽  
Lake Basins

scholarly journals Seasonal thaw settlement at drained thermokarst lake basins, Arctic Alaska

2014 ◽  
Vol 8 (3) ◽  
pp. 815-826 ◽  
Author(s):  
L. Liu ◽  
K. Schaefer ◽  
A. Gusmeroli ◽  
G. Grosse ◽  
B. M. Jones ◽  
...  
Keyword(s):  
Surface Deformation ◽  
Active Layer Thickness ◽  
Surface Dynamics ◽  
Thermokarst Lake ◽  
The North ◽  
Arctic Alaska ◽  
North Slope Of Alaska ◽  
Thaw Settlement ◽  
Ground Penetrating ◽  
Lake Basins

Abstract. Drained thermokarst lake basins (DTLBs) are ubiquitous landforms on Arctic tundra lowland. Their dynamic states are seldom investigated, despite their importance for landscape stability, hydrology, nutrient fluxes, and carbon cycling. Here we report results based on high-resolution Interferometric Synthetic Aperture Radar (InSAR) measurements using space-borne data for a study area located on the North Slope of Alaska near Prudhoe Bay, where we focus on the seasonal thaw settlement within DTLBs, averaged between 2006 and 2010. The majority (14) of the 18 DTLBs in the study area exhibited seasonal thaw settlement of 3–4 cm. However, four of the DTLBs examined exceeded 4 cm of thaw settlement, with one basin experiencing up to 12 cm. Combining the InSAR observations with the in situ active layer thickness measured using ground penetrating radar and mechanical probing, we calculated thaw strain, an index of thaw settlement strength along a transect across the basin that underwent large thaw settlement. We found thaw strains of 10–35% at the basin center, suggesting the seasonal melting of ground ice as a possible mechanism for the large settlement. These findings emphasize the dynamic nature of permafrost landforms, demonstrate the capability of the InSAR technique to remotely monitor surface deformation of individual DTLBs, and illustrate the combination of ground-based and remote sensing observations to estimate thaw strain. Our study highlights the need for better description of the spatial heterogeneity of landscape-scale processes for regional assessment of surface dynamics on Arctic coastal lowlands.

Modern thermokarst lake dynamics in the continuous permafrost zone, northern Seward Peninsula, Alaska

2011 ◽  
Vol 116 ◽  
Author(s):  
B. M. Jones ◽  
G. Grosse ◽  
C. D. Arp ◽  
M. C. Jones ◽  
K. M. Walter Anthony ◽  
...  
Keyword(s):  
Permafrost Zone ◽  
Thermokarst Lake ◽  
Continuous Permafrost ◽  
Seward Peninsula ◽  
Lake Dynamics

scholarly journals Seasonal thaw settlement at drained thermokarst lake basins, Arctic Alaska

2013 ◽  
Vol 7 (6) ◽  
pp. 5793-5822
Author(s):  
L. Liu ◽  
K. Schaefer ◽  
A. Gusmeroli ◽  
G. Grosse ◽  
B. M. Jones ◽  
...  
Keyword(s):  
Surface Deformation ◽  
Active Layer Thickness ◽  
Surface Dynamics ◽  
Thermokarst Lake ◽  
Arctic Alaska ◽  
Thaw Settlement ◽  
Ground Penetrating ◽  
Prudhoe Bay ◽  
Lake Basins

Abstract. Drained thermokarst lake basins (DTLBs) are ubiquitous landforms on arctic tundra lowlands, but their present-day dynamic states are seldom investigated. Here we report results based on high-resolution Interferometric Synthetic Aperture Radar (InSAR) measurements using space-borne data for a study area located near Prudhoe Bay, Alaska where we focus on the seasonal thaw settlement within DTLBs, averaged between 2006 and 2010. The majority (14) of the 18 DTLBs in the study area analyzed exhibited seasonal thaw settlement of 3–4 cm. However, four of the DTLBs analyzed exceeded 4 cm of thaw settlement, with one basin experiencing up to 12 cm. Combining the InSAR observations with the in situ active layer thickness measured using ground penetrating radar and mechanical probing, we calculated thaw strain, an index of thaw settlement strength along a transect across the basin that underwent large thaw settlement. We found thaw strains of 10–35% at the basin center, suggesting the seasonal melting of ground ice as a possible mechanism for the large settlement. These findings emphasize the dynamic nature of permafrost landforms, demonstrate the capability of the InSAR technique to remotely monitor surface deformation of individual DTLBs, and illustrate the combination of ground-based and remote sensing observations to estimate thaw strain. Our study highlights the need for better description of the spatial heterogeneity of landscape-scale processes for regional assessment of surface dynamics on arctic coastal lowlands.

Diatoms in bottom sediments of thermokarst lakes of the Pechora Delta

2019 ◽  
pp. 285-290
Author(s):  
Elvira A. Zinnatova, Larisa A. Frolova ◽  
Larisa A. Frolova
Keyword(s):  
Bottom Sediments ◽  
Environmental Conditions ◽  
Sources Of Information ◽  
Thermokarst Lakes ◽  
Thermokarst Lake ◽  
Fouling Organisms ◽  
Diatom Complexes

The Northern lakes are good objects for paleoclimatic reconstructions. One of the sources of information about changes in the ecosystems of lakes are diatoms. The study of diatom complexes revealed 133 taxa belonging to 49 genera, 24 families, 13 orders and 3 classes in the bottom sediments of the thermokarst lake of the Pechora Delta. Dominated by the Holarctic representatives of benthic and fouling organisms giving preference to the alkaline environmental conditions.

Sign in / Sign up

Export Citation Format

Share Document